/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:19:52,855 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:19:52,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:19:52,907 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:19:52,908 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:19:52,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:19:52,918 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:19:52,922 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:19:52,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:19:52,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:19:52,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:19:52,930 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:19:52,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:19:52,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:19:52,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:19:52,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:19:52,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:19:52,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:19:52,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:19:52,951 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:19:52,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:19:52,954 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:19:52,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:19:52,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:19:52,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:19:52,972 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:19:52,972 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:19:52,973 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:19:52,973 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:19:52,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:19:52,978 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:19:52,979 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:19:52,980 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:19:52,980 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:19:52,985 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:19:52,985 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:19:52,988 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:19:52,988 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:19:52,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:19:52,990 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:19:52,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:19:52,991 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 [2020-09-24 19:19:53,035 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:19:53,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:19:53,038 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:19:53,038 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:19:53,038 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:19:53,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:19:53,039 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:19:53,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:19:53,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:19:53,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:19:53,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:19:53,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:19:53,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:19:53,041 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:19:53,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:19:53,042 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:19:53,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:19:53,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:19:53,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:19:53,043 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:19:53,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:19:53,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:19:53,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:19:53,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:19:53,044 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:19:53,044 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:19:53,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:19:53,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:19:53,045 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:19:53,045 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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:19:53,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:19:53,533 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:19:53,537 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:19:53,539 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:19:53,540 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:19:53,541 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c [2020-09-24 19:19:53,622 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26ffcf68d/4bb1f1ce0828497ebf9c37796491194e/FLAGe7190ce13 [2020-09-24 19:19:54,152 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:19:54,153 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c [2020-09-24 19:19:54,161 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26ffcf68d/4bb1f1ce0828497ebf9c37796491194e/FLAGe7190ce13 [2020-09-24 19:19:54,520 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26ffcf68d/4bb1f1ce0828497ebf9c37796491194e [2020-09-24 19:19:54,535 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:19:54,541 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:19:54,542 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:19:54,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:19:54,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:19:54,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:19:54" (1/1) ... [2020-09-24 19:19:54,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@edcea15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:19:54, skipping insertion in model container [2020-09-24 19:19:54,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:19:54" (1/1) ... [2020-09-24 19:19:54,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:19:54,588 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:19:54,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:19:54,891 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:19:54,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:19:54,937 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:19:54,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:19:54 WrapperNode [2020-09-24 19:19:54,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:19:54,940 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:19:54,940 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:19:54,940 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:19:54,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:19:54" (1/1) ... [2020-09-24 19:19:54,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:19:54" (1/1) ... [2020-09-24 19:19:55,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:19:54" (1/1) ... [2020-09-24 19:19:55,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:19:54" (1/1) ... [2020-09-24 19:19:55,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:19:54" (1/1) ... [2020-09-24 19:19:55,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:19:54" (1/1) ... [2020-09-24 19:19:55,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:19:54" (1/1) ... [2020-09-24 19:19:55,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:19:55,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:19:55,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:19:55,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:19:55,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:19:54" (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 [2020-09-24 19:19:55,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:19:55,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:19:55,159 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-24 19:19:55,159 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-24 19:19:55,159 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:19:55,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:19:55,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:19:55,160 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-24 19:19:55,160 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-24 19:19:55,160 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:19:55,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:19:55,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:19:55,409 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:19:55,409 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 19:19:55,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:19:55 BoogieIcfgContainer [2020-09-24 19:19:55,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:19:55,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:19:55,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:19:55,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:19:55,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:19:54" (1/3) ... [2020-09-24 19:19:55,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc0ba01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:19:55, skipping insertion in model container [2020-09-24 19:19:55,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:19:54" (2/3) ... [2020-09-24 19:19:55,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc0ba01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:19:55, skipping insertion in model container [2020-09-24 19:19:55,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:19:55" (3/3) ... [2020-09-24 19:19:55,428 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-1.c [2020-09-24 19:19:55,444 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:19:55,456 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:19:55,484 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:19:55,525 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:19:55,526 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:19:55,526 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:19:55,526 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:19:55,527 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:19:55,527 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:19:55,527 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:19:55,527 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:19:55,554 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-24 19:19:55,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 19:19:55,564 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:19:55,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:19:55,566 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:19:55,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:19:55,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-24 19:19:55,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:19:55,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998914396] [2020-09-24 19:19:55,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:19:55,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:19:55,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:55,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:19:55,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:19:55,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:19:55,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 19:19:55,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:19:55,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:19:55,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 19:19:55,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:19:55,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 19:19:55,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:19:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:19:55,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:55,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:19:55,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:19:55,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:19:55,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:19:55,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:19:55,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:19:55,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:19:55,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:19:55,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:19:55,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 19:19:55,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:19:55,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:55,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:19:55,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:19:55,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:19:55,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 19:19:55,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:19:55,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:19:55,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:19:55,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:19:55,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:19:55,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:19:55,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998914396] [2020-09-24 19:19:55,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:19:55,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:19:55,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281892094] [2020-09-24 19:19:55,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:19:55,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:19:55,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:19:55,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:19:55,966 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-24 19:19:56,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:19:56,104 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-24 19:19:56,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:19:56,106 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 19:19:56,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:19:56,119 INFO L225 Difference]: With dead ends: 58 [2020-09-24 19:19:56,119 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 19:19:56,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:19:56,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 19:19:56,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-24 19:19:56,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 19:19:56,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-24 19:19:56,187 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-24 19:19:56,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:19:56,187 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-24 19:19:56,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:19:56,188 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-24 19:19:56,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 19:19:56,190 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:19:56,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:19:56,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:19:56,192 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:19:56,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:19:56,192 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-24 19:19:56,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:19:56,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601847189] [2020-09-24 19:19:56,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:19:56,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:19:56,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:56,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:19:56,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 19:19:56,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:19:56,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-24 19:19:56,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:19:56,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:19:56,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 19:19:56,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:19:56,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:19:56,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:19:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:19:56,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:56,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:19:56,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:19:56,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:19:56,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:19:56,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:19:56,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:19:56,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:19:56,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:19:56,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:19:56,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 19:19:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:19:56,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:56,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:19:56,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:19:56,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:19:56,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 19:19:56,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:19:56,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:19:56,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:19:56,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:19:56,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:19:56,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:19:56,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601847189] [2020-09-24 19:19:56,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:19:56,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:19:56,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606435090] [2020-09-24 19:19:56,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:19:56,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:19:56,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:19:56,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:19:56,502 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-24 19:19:56,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:19:56,574 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-24 19:19:56,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:19:56,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 19:19:56,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:19:56,577 INFO L225 Difference]: With dead ends: 50 [2020-09-24 19:19:56,577 INFO L226 Difference]: Without dead ends: 44 [2020-09-24 19:19:56,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:19:56,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-24 19:19:56,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-24 19:19:56,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 19:19:56,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-24 19:19:56,589 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-24 19:19:56,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:19:56,590 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-24 19:19:56,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:19:56,590 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-24 19:19:56,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 19:19:56,592 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:19:56,592 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:19:56,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:19:56,593 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:19:56,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:19:56,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-24 19:19:56,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:19:56,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060293462] [2020-09-24 19:19:56,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:19:56,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:19:56,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:56,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:56,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:57,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:19:57,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 19:19:57,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:19:57,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 566 [2020-09-24 19:19:57,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:19:57,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:19:57,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 19:19:57,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:19:57,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:19:57,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:19:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:19:57,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:57,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:19:57,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:19:57,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:19:57,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:19:57,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:19:57,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:19:57,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:19:57,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:19:57,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:19:57,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 19:19:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:19:57,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:57,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:19:57,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 19:19:57,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:19:57,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-24 19:19:57,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:19:57,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:19:57,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 19:19:57,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:19:57,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:19:57,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:19:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:19:57,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:57,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:19:57,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:19:57,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:19:57,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:19:57,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:19:57,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:19:57,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:19:57,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:19:57,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:19:57,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 19:19:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:19:57,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:57,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:19:57,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:19:57,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:19:57,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:19:57,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:19:57,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:19:57,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:19:57,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:19:57,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:19:57,385 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:19:57,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060293462] [2020-09-24 19:19:57,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:19:57,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 19:19:57,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634477693] [2020-09-24 19:19:57,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:19:57,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:19:57,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:19:57,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:19:57,388 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 6 states. [2020-09-24 19:19:57,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:19:57,472 INFO L93 Difference]: Finished difference Result 82 states and 102 transitions. [2020-09-24 19:19:57,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:19:57,473 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-24 19:19:57,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:19:57,474 INFO L225 Difference]: With dead ends: 82 [2020-09-24 19:19:57,475 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 19:19:57,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:19:57,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 19:19:57,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-09-24 19:19:57,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-24 19:19:57,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-09-24 19:19:57,487 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 33 [2020-09-24 19:19:57,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:19:57,487 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-09-24 19:19:57,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:19:57,488 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-09-24 19:19:57,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 19:19:57,490 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:19:57,490 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:19:57,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:19:57,490 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:19:57,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:19:57,491 INFO L82 PathProgramCache]: Analyzing trace with hash 887160861, now seen corresponding path program 1 times [2020-09-24 19:19:57,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:19:57,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583122375] [2020-09-24 19:19:57,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:19:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:19:57,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:57,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:57,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:19:57,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 19:19:57,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:19:57,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 461 [2020-09-24 19:19:57,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:19:57,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:19:57,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 19:19:57,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 19:19:57,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:19:57,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:19:57,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:19:57,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:57,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:19:57,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:19:57,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:19:57,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:19:57,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:19:57,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:19:57,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:19:57,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:19:57,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:19:57,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 19:19:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:19:58,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:58,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:58,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:19:58,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 19:19:58,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:19:58,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-09-24 19:19:58,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:19:58,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:19:58,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:19:58,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 19:19:58,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:19:58,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:19:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:19:58,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:58,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:19:58,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:19:58,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:19:58,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:19:58,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:19:58,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:19:58,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:19:58,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:19:58,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:19:58,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 19:19:58,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:19:58,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:58,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:19:58,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:19:58,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:19:58,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:19:58,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:19:58,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:19:58,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:19:58,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:19:58,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:19:58,470 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:19:58,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583122375] [2020-09-24 19:19:58,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:19:58,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 19:19:58,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605296692] [2020-09-24 19:19:58,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:19:58,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:19:58,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:19:58,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:19:58,476 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 7 states. [2020-09-24 19:19:58,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:19:58,639 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2020-09-24 19:19:58,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 19:19:58,642 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-24 19:19:58,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:19:58,646 INFO L225 Difference]: With dead ends: 56 [2020-09-24 19:19:58,646 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 19:19:58,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:19:58,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 19:19:58,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-09-24 19:19:58,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-24 19:19:58,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-09-24 19:19:58,668 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 34 [2020-09-24 19:19:58,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:19:58,668 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-09-24 19:19:58,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:19:58,669 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-09-24 19:19:58,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 19:19:58,671 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:19:58,672 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:19:58,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:19:58,674 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:19:58,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:19:58,674 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-24 19:19:58,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:19:58,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010136852] [2020-09-24 19:19:58,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:19:58,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:19:58,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:58,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:58,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:58,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:59,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:19:59,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 19:19:59,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:19:59,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 539 [2020-09-24 19:19:59,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:19:59,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:19:59,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 19:19:59,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:19:59,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:19:59,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:19:59,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:19:59,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:59,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:19:59,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:19:59,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:19:59,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:19:59,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:19:59,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:19:59,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:19:59,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:19:59,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:19:59,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 19:19:59,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:19:59,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:59,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:59,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:19:59,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 19:19:59,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:19:59,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-24 19:19:59,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:19:59,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:19:59,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 19:19:59,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:19:59,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:19:59,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:19:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:19:59,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:59,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:19:59,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:19:59,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:19:59,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 19:19:59,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:19:59,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:19:59,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:19:59,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:19:59,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:19:59,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 19:19:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:19:59,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:59,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:59,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:19:59,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:19:59,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:19:59,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 19:19:59,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:19:59,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:19:59,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:19:59,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:19:59,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:19:59,487 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 19:19:59,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010136852] [2020-09-24 19:19:59,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:19:59,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 19:19:59,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814684444] [2020-09-24 19:19:59,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:19:59,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:19:59,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:19:59,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:19:59,490 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 6 states. [2020-09-24 19:19:59,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:19:59,586 INFO L93 Difference]: Finished difference Result 100 states and 126 transitions. [2020-09-24 19:19:59,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:19:59,587 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-24 19:19:59,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:19:59,589 INFO L225 Difference]: With dead ends: 100 [2020-09-24 19:19:59,589 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 19:19:59,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:19:59,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 19:19:59,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-09-24 19:19:59,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-24 19:19:59,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2020-09-24 19:19:59,609 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 35 [2020-09-24 19:19:59,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:19:59,610 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2020-09-24 19:19:59,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:19:59,610 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2020-09-24 19:19:59,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 19:19:59,612 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:19:59,612 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:19:59,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:19:59,613 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:19:59,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:19:59,613 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-24 19:19:59,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:19:59,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323022187] [2020-09-24 19:19:59,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:19:59,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:19:59,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:59,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:59,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:59,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:59,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:19:59,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:00,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:00,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:00,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 19:20:00,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 19:20:00,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:20:00,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:00,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:20:00,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 19:20:00,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:20:00,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:00,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:20:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:00,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:00,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:00,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:20:00,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:00,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:20:00,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:00,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:00,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:00,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:00,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:00,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 19:20:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:00,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:00,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:00,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:00,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:01,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:01,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 19:20:01,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:20:01,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-24 19:20:01,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:01,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:20:01,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 19:20:01,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:20:01,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-24 19:20:01,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:01,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:01,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:01,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:01,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 19:20:01,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:01,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 19:20:01,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:01,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:20:01,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 19:20:01,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:20:01,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:01,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:01,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:01,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:01,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:01,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:20:01,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:01,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 19:20:01,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:01,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:20:01,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:20:01,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:20:01,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:01,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 19:20:01,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:01,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:01,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:01,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:20:01,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:01,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:20:01,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:01,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:01,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:20:01,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:01,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:01,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 19:20:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:01,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:01,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:01,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:20:01,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:01,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:20:01,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:01,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:01,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 19:20:01,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:01,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:01,810 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 19:20:01,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323022187] [2020-09-24 19:20:01,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:20:01,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 19:20:01,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729838759] [2020-09-24 19:20:01,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:20:01,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:20:01,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:20:01,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:20:01,816 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand 6 states. [2020-09-24 19:20:01,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:20:01,911 INFO L93 Difference]: Finished difference Result 100 states and 125 transitions. [2020-09-24 19:20:01,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:20:01,911 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-09-24 19:20:01,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:20:01,913 INFO L225 Difference]: With dead ends: 100 [2020-09-24 19:20:01,913 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 19:20:01,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:20:01,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 19:20:01,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-24 19:20:01,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 19:20:01,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2020-09-24 19:20:01,924 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 51 [2020-09-24 19:20:01,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:20:01,924 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2020-09-24 19:20:01,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:20:01,924 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2020-09-24 19:20:01,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 19:20:01,926 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:20:01,927 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:20:01,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:20:01,927 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:20:01,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:20:01,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1703786405, now seen corresponding path program 1 times [2020-09-24 19:20:01,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:20:01,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14378442] [2020-09-24 19:20:01,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:20:01,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:01,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:01,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:02,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:02,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:02,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 19:20:02,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:20:02,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-24 19:20:02,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:02,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:20:02,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 19:20:02,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 19:20:02,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:20:02,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:20:02,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:02,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:02,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:02,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:20:02,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:02,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:20:02,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:02,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:02,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:02,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:02,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:20:02,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 19:20:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:02,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:03,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:03,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:03,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:03,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 19:20:03,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:20:03,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:20:03,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:03,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:20:03,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:20:03,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 19:20:03,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:04,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:04,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:04,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:04,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:04,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 19:20:04,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:04,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 19:20:04,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:04,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:20:04,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:04,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 19:20:04,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:04,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:04,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:04,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:04,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:04,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:20:04,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:04,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:20:04,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:04,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:04,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:04,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:04,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:04,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 19:20:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:04,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:04,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:04,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:20:04,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:04,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:20:04,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:04,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:04,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:04,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:04,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:04,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:20:04,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:04,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:04,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:04,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:20:04,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:04,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 19:20:04,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:04,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:20:04,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:04,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:20:04,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:04,160 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 19:20:04,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14378442] [2020-09-24 19:20:04,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:20:04,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:20:04,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358894420] [2020-09-24 19:20:04,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:20:04,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:20:04,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:20:04,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:20:04,164 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 7 states. [2020-09-24 19:20:04,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:20:04,290 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2020-09-24 19:20:04,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 19:20:04,292 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-24 19:20:04,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:20:04,294 INFO L225 Difference]: With dead ends: 66 [2020-09-24 19:20:04,294 INFO L226 Difference]: Without dead ends: 60 [2020-09-24 19:20:04,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:20:04,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-24 19:20:04,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-09-24 19:20:04,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 19:20:04,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2020-09-24 19:20:04,310 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 52 [2020-09-24 19:20:04,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:20:04,310 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2020-09-24 19:20:04,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:20:04,311 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2020-09-24 19:20:04,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 19:20:04,313 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:20:04,313 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:20:04,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:20:04,314 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:20:04,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:20:04,314 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-24 19:20:04,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:20:04,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215439152] [2020-09-24 19:20:04,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:20:04,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:04,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:04,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:04,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:04,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:04,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:04,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:05,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:05,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:05,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 19:20:05,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 19:20:05,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-24 19:20:05,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:05,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:20:05,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 19:20:05,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 19:20:05,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:05,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:20:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:05,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:05,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:05,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:20:05,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:05,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:20:05,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:05,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:05,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:05,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:05,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:05,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 19:20:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:05,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:05,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:05,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:05,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:05,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:05,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:05,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:06,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:06,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 19:20:06,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 19:20:06,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:20:06,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:06,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:20:06,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 19:20:06,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 19:20:06,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:06,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:06,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:06,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:06,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:06,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:06,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:06,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 19:20:06,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:20:06,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-09-24 19:20:06,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:06,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:20:06,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:06,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 19:20:06,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:06,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:06,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:06,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:06,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:20:06,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:06,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 19:20:06,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:06,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:20:06,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:06,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:20:06,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:20:06,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 19:20:06,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:06,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:06,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:06,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:20:06,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:06,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:20:06,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:06,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:20:06,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:06,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:20:06,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:20:06,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:20:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:06,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:06,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:06,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:07,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:07,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 19:20:07,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:20:07,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-24 19:20:07,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:07,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:20:07,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:20:07,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 19:20:07,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:07,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:07,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:07,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:07,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:20:07,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:07,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:20:07,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:07,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:20:07,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:07,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:20:07,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:07,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 19:20:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:07,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:07,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:07,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:20:07,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:07,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:20:07,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:07,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:20:07,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:07,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:20:07,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:07,126 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-24 19:20:07,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215439152] [2020-09-24 19:20:07,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:20:07,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 19:20:07,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156159927] [2020-09-24 19:20:07,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 19:20:07,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:20:07,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 19:20:07,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:20:07,130 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 9 states. [2020-09-24 19:20:07,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:20:07,377 INFO L93 Difference]: Finished difference Result 120 states and 159 transitions. [2020-09-24 19:20:07,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 19:20:07,379 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-24 19:20:07,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:20:07,380 INFO L225 Difference]: With dead ends: 120 [2020-09-24 19:20:07,380 INFO L226 Difference]: Without dead ends: 72 [2020-09-24 19:20:07,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-09-24 19:20:07,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-24 19:20:07,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-09-24 19:20:07,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-24 19:20:07,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 88 transitions. [2020-09-24 19:20:07,405 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 88 transitions. Word has length 69 [2020-09-24 19:20:07,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:20:07,405 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 88 transitions. [2020-09-24 19:20:07,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 19:20:07,406 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 88 transitions. [2020-09-24 19:20:07,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-24 19:20:07,407 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:20:07,408 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:20:07,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:20:07,408 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:20:07,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:20:07,409 INFO L82 PathProgramCache]: Analyzing trace with hash -271039366, now seen corresponding path program 1 times [2020-09-24 19:20:07,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:20:07,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801468090] [2020-09-24 19:20:07,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:20:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:07,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:07,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:07,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:07,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:07,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:07,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:07,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:07,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:08,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:08,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:08,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:08,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-24 19:20:08,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 19:20:08,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1007 [2020-09-24 19:20:08,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:08,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:20:08,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 19:20:08,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 19:20:08,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:08,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:20:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:08,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:08,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:08,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:20:08,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:08,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:20:08,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:08,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:08,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:08,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:08,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:08,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 19:20:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:08,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:08,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:08,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:08,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:08,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:08,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:08,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:08,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:09,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:09,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:09,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-24 19:20:09,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 19:20:09,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-24 19:20:09,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:09,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:20:09,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 19:20:09,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 19:20:09,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:09,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:09,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:09,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:09,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:09,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:10,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:10,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 19:20:10,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:20:10,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:20:10,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:10,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:20:10,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 19:20:10,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 19:20:10,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:20:10,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:10,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:10,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:10,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:10,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:10,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:10,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 19:20:10,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:20:10,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-09-24 19:20:10,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:10,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:20:10,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:10,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 19:20:10,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:20:10,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:10,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:10,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:10,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:20:10,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:10,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:20:10,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:10,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:20:10,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:10,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:20:10,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:20:10,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 19:20:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:10,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:10,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:10,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:20:10,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:10,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:20:10,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:10,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:20:10,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:10,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:20:10,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:20:10,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:20:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:10,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:10,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:10,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:20:10,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:10,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:20:10,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:10,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:20:10,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:20:10,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:20:10,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:20:10,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 19:20:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:10,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:10,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:11,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:11,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:11,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:11,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:11,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:11,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:11,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 19:20:11,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 19:20:11,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-24 19:20:11,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:11,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:20:11,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 19:20:11,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-24 19:20:11,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:11,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:11,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:11,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:11,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:12,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:12,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:12,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:12,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:12,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 19:20:12,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:20:12,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-24 19:20:12,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:12,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:20:12,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:12,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 19:20:12,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:12,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:12,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:12,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:13,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:13,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 19:20:13,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:13,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 19:20:13,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:13,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:20:13,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:13,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 19:20:13,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:13,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:13,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:13,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:13,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:20:13,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:13,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:20:13,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:13,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:13,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:13,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:13,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:13,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 19:20:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:13,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:13,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:13,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:20:13,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:13,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:20:13,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:13,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:13,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:13,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:13,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:13,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:20:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:13,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:13,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:13,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:20:13,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:13,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:20:13,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:13,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:20:13,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:13,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:20:13,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:13,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 19:20:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:13,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:13,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:13,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:20:13,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:13,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:20:13,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:13,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:20:13,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:20:13,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:20:13,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:13,087 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 63 proven. 37 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-09-24 19:20:13,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801468090] [2020-09-24 19:20:13,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:20:13,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 19:20:13,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701709164] [2020-09-24 19:20:13,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 19:20:13,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:20:13,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 19:20:13,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:20:13,095 INFO L87 Difference]: Start difference. First operand 72 states and 88 transitions. Second operand 9 states. [2020-09-24 19:20:13,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:20:13,209 INFO L93 Difference]: Finished difference Result 144 states and 189 transitions. [2020-09-24 19:20:13,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 19:20:13,212 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 121 [2020-09-24 19:20:13,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:20:13,213 INFO L225 Difference]: With dead ends: 144 [2020-09-24 19:20:13,213 INFO L226 Difference]: Without dead ends: 78 [2020-09-24 19:20:13,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:20:13,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-24 19:20:13,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 72. [2020-09-24 19:20:13,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-24 19:20:13,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions. [2020-09-24 19:20:13,234 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 121 [2020-09-24 19:20:13,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:20:13,236 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions. [2020-09-24 19:20:13,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 19:20:13,237 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions. [2020-09-24 19:20:13,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 19:20:13,241 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:20:13,242 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:20:13,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:20:13,242 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:20:13,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:20:13,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1951493560, now seen corresponding path program 2 times [2020-09-24 19:20:13,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:20:13,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135069852] [2020-09-24 19:20:13,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:20:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:13,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:13,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:13,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:13,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:14,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:14,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-24 19:20:14,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:20:14,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:20:14,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:14,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:20:14,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 19:20:14,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 19:20:14,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:14,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:20:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:14,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:14,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:14,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:20:14,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:14,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:20:14,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:14,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:14,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:14,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:14,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:14,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 19:20:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:14,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:14,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:14,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:14,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:15,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:15,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:15,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 19:20:15,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:20:15,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-24 19:20:15,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:15,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:20:15,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:20:15,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-24 19:20:15,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:15,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:15,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:15,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:15,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:15,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 19:20:15,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:15,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 19:20:15,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:15,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:20:15,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:15,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 19:20:15,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:15,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:15,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:15,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:15,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:15,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 19:20:15,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:15,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:20:15,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:15,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:15,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:15,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:15,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:15,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:15,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:15,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:15,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:15,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:20:15,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:15,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:20:15,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:15,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:15,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:15,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:15,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:15,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 19:20:15,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:15,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:15,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:15,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:20:15,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:15,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:20:15,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:15,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:15,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:15,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:15,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:15,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:20:15,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:15,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:15,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:15,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:20:15,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:15,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:20:15,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:15,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:15,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:15,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:15,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:15,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 19:20:15,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:15,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:15,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:15,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:15,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 19:20:15,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:20:15,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-09-24 19:20:15,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:15,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:20:15,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:15,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 19:20:15,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:20:15,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:15,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:15,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:15,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:20:15,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:15,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:20:15,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:15,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:20:15,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:15,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:20:15,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:20:15,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 19:20:15,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:15,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:15,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:15,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:20:15,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:15,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:20:15,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:15,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:20:15,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:15,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:20:15,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:20:15,876 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 39 proven. 10 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-09-24 19:20:15,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135069852] [2020-09-24 19:20:15,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:20:15,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 19:20:15,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974630317] [2020-09-24 19:20:15,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 19:20:15,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:20:15,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 19:20:15,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:20:15,879 INFO L87 Difference]: Start difference. First operand 72 states and 87 transitions. Second operand 9 states. [2020-09-24 19:20:16,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:20:16,077 INFO L93 Difference]: Finished difference Result 92 states and 111 transitions. [2020-09-24 19:20:16,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 19:20:16,078 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-09-24 19:20:16,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:20:16,080 INFO L225 Difference]: With dead ends: 92 [2020-09-24 19:20:16,080 INFO L226 Difference]: Without dead ends: 86 [2020-09-24 19:20:16,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-09-24 19:20:16,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-24 19:20:16,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 78. [2020-09-24 19:20:16,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-24 19:20:16,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 94 transitions. [2020-09-24 19:20:16,103 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 94 transitions. Word has length 87 [2020-09-24 19:20:16,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:20:16,104 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 94 transitions. [2020-09-24 19:20:16,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 19:20:16,105 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 94 transitions. [2020-09-24 19:20:16,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-09-24 19:20:16,106 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:20:16,106 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:20:16,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:20:16,107 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:20:16,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:20:16,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1989793720, now seen corresponding path program 1 times [2020-09-24 19:20:16,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:20:16,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258133789] [2020-09-24 19:20:16,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:20:16,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:16,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:16,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:16,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:16,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:16,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:16,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:16,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:16,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:17,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:17,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-24 19:20:17,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 19:20:17,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-24 19:20:17,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:17,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:20:17,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 19:20:17,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 19:20:17,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:20:17,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:20:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:17,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:17,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:17,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:20:17,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:17,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:20:17,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:17,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:17,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:17,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:17,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:20:17,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 19:20:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:17,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:17,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:17,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:17,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:17,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:17,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:17,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:18,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:18,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 19:20:18,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 19:20:18,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:20:18,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:18,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:20:18,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-24 19:20:18,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 19:20:18,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:18,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:18,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:18,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:18,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 19:20:18,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:18,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:20:18,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:18,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:18,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:18,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:18,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:18,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:18,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:18,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:18,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 19:20:18,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:18,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:20:18,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:18,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:18,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:18,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:18,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:18,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:18,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:18,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:18,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:20:18,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:18,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:20:18,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:18,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:18,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:18,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:18,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:18,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 19:20:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:18,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:18,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:18,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:20:18,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:18,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:20:18,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:18,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:18,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:18,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:18,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:18,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:20:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:18,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:18,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:18,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:20:18,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:18,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:20:18,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:18,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:18,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:18,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:18,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:18,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 19:20:18,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:18,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:18,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:18,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:18,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:18,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 19:20:18,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:20:18,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-09-24 19:20:18,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:18,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:20:18,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 19:20:18,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 19:20:18,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:18,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:18,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:18,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:18,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:18,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:20:18,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:18,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:20:18,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:18,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:20:18,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:18,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:20:18,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:18,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 19:20:18,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:18,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:18,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:18,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:18,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:18,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 19:20:18,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:20:18,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-09-24 19:20:18,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:18,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:20:18,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:20:18,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 19:20:18,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:18,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:18,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:18,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:18,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:20:18,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:18,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:20:18,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:18,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:20:18,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:18,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:20:18,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:20:18,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 19:20:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:18,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:18,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:18,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:20:18,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:18,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:20:18,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:18,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:20:18,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:18,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:20:18,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:20:18,943 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 63 proven. 4 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-09-24 19:20:18,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258133789] [2020-09-24 19:20:18,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:20:18,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:20:18,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094629758] [2020-09-24 19:20:18,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:20:18,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:20:18,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:20:18,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:20:18,945 INFO L87 Difference]: Start difference. First operand 78 states and 94 transitions. Second operand 7 states. [2020-09-24 19:20:19,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:20:19,045 INFO L93 Difference]: Finished difference Result 144 states and 187 transitions. [2020-09-24 19:20:19,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:20:19,045 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 105 [2020-09-24 19:20:19,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:20:19,047 INFO L225 Difference]: With dead ends: 144 [2020-09-24 19:20:19,047 INFO L226 Difference]: Without dead ends: 72 [2020-09-24 19:20:19,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:20:19,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-24 19:20:19,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2020-09-24 19:20:19,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-24 19:20:19,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2020-09-24 19:20:19,055 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 105 [2020-09-24 19:20:19,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:20:19,056 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2020-09-24 19:20:19,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:20:19,056 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2020-09-24 19:20:19,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-09-24 19:20:19,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:20:19,057 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:20:19,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 19:20:19,058 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:20:19,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:20:19,058 INFO L82 PathProgramCache]: Analyzing trace with hash 307755032, now seen corresponding path program 2 times [2020-09-24 19:20:19,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:20:19,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836336210] [2020-09-24 19:20:19,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:20:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:19,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:19,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:19,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:19,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:19,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:20,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:20,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-24 19:20:20,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:20:20,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-24 19:20:20,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:20,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:20:20,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 19:20:20,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 19:20:20,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:20,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:20:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:20,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:20,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:20,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:20:20,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:20,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:20:20,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:20,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:20,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:20,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:20,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:20,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 19:20:20,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:20,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:20,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:20,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:20,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:20,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:20,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:20,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:21,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:21,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 19:20:21,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 19:20:21,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-24 19:20:21,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:21,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:20:21,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:20:21,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-24 19:20:21,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:21,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:21,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:21,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:21,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:22,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:22,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 19:20:22,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:20:22,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-24 19:20:22,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:22,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:20:22,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:22,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 19:20:22,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:22,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:22,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:22,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:22,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 19:20:22,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:22,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 19:20:22,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:22,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:20:22,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:22,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 19:20:22,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:22,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:22,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:22,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:22,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:20:22,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:22,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:20:22,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:22,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:22,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:22,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:22,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:22,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 19:20:22,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:22,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:22,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:22,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:20:22,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:22,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:20:22,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:22,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:22,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:22,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:22,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:22,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:20:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:22,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:22,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:22,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:20:22,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:22,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:20:22,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:22,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:20:22,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:22,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:20:22,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:22,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 19:20:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:22,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:22,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:22,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 19:20:22,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:22,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 19:20:22,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:22,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:20:22,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:22,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 19:20:22,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:22,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:22,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:22,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:22,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:22,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 19:20:22,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:22,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:20:22,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:22,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:22,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:22,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:22,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:22,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:22,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:22,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:22,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:20:22,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:22,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:20:22,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:22,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:22,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:22,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:22,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:22,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 19:20:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:22,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:22,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:22,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:20:22,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:22,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:20:22,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:22,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:22,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:22,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:22,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:22,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:20:22,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:22,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:22,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:22,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:20:22,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:22,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:20:22,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:22,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:22,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:22,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:22,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:22,344 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 24 proven. 42 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-09-24 19:20:22,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836336210] [2020-09-24 19:20:22,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:20:22,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:20:22,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985014022] [2020-09-24 19:20:22,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:20:22,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:20:22,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:20:22,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:20:22,347 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand 8 states. [2020-09-24 19:20:22,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:20:22,505 INFO L93 Difference]: Finished difference Result 114 states and 145 transitions. [2020-09-24 19:20:22,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 19:20:22,506 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 105 [2020-09-24 19:20:22,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:20:22,507 INFO L225 Difference]: With dead ends: 114 [2020-09-24 19:20:22,507 INFO L226 Difference]: Without dead ends: 88 [2020-09-24 19:20:22,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:20:22,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-24 19:20:22,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 76. [2020-09-24 19:20:22,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-24 19:20:22,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 94 transitions. [2020-09-24 19:20:22,516 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 94 transitions. Word has length 105 [2020-09-24 19:20:22,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:20:22,516 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 94 transitions. [2020-09-24 19:20:22,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:20:22,516 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 94 transitions. [2020-09-24 19:20:22,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-24 19:20:22,518 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:20:22,518 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:20:22,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 19:20:22,519 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:20:22,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:20:22,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1630569666, now seen corresponding path program 1 times [2020-09-24 19:20:22,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:20:22,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320051293] [2020-09-24 19:20:22,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:20:22,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:22,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:22,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:22,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:22,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:22,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:22,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:22,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:23,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:23,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-24 19:20:23,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 19:20:23,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-24 19:20:23,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:23,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:20:23,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-09-24 19:20:23,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 19:20:23,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:23,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:20:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:23,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:23,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:23,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:20:23,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:23,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:20:23,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:23,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:23,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:23,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:23,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:23,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 19:20:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:23,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:23,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:23,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:23,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:23,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:24,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:24,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:24,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-24 19:20:24,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:20:24,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:20:24,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:24,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:20:24,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-24 19:20:24,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 19:20:24,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:24,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:24,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:24,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:24,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:24,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:24,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:24,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:24,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:25,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:25,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:25,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:25,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:25,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:25,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 19:20:25,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 19:20:25,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:20:25,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:25,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:25,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:25,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:25,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:25,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:25,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:25,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:25,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 19:20:25,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:25,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:20:25,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:25,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:25,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:25,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:25,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:25,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:25,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:25,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:25,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:20:25,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:25,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:20:25,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:25,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:25,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:25,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:25,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:25,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 19:20:25,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:25,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:25,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:25,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:20:25,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:25,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:20:25,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:25,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:25,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:25,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:25,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:25,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:20:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:25,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:25,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:25,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 19:20:25,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:25,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:20:25,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:25,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:25,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:25,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:25,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:25,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:25,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:25,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:25,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:20:25,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:25,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:20:25,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:25,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:25,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:25,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:25,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:25,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 19:20:25,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:25,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:25,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:25,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:20:25,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:25,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:20:25,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:25,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:25,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:25,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:25,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:25,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-24 19:20:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:25,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:25,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:25,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:25,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:25,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:26,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:26,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:26,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:26,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:26,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:26,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 19:20:26,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 19:20:26,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:20:26,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:26,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:20:26,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 19:20:26,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 19:20:26,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:26,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:26,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:26,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:26,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:27,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:27,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 19:20:27,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:20:27,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-09-24 19:20:27,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:27,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:20:27,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:27,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 19:20:27,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:20:27,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:27,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:27,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:27,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:20:27,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:27,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 19:20:27,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:27,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:20:27,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:27,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:20:27,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:20:27,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 19:20:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:27,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:27,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:27,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:20:27,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:27,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:20:27,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:27,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:20:27,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:27,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:20:27,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:20:27,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:20:27,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:27,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:27,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:27,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:27,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:27,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 19:20:27,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:20:27,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-09-24 19:20:27,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:27,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:20:27,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:20:27,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 19:20:27,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:20:27,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:27,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:27,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:27,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:27,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:20:27,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:27,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:20:27,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:27,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:20:27,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:27,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:20:27,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:20:27,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 19:20:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:27,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:27,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:27,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:20:27,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:27,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:20:27,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:27,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:20:27,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:27,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:20:27,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:20:27,519 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 124 proven. 20 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-09-24 19:20:27,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320051293] [2020-09-24 19:20:27,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:20:27,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:20:27,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328979066] [2020-09-24 19:20:27,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:20:27,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:20:27,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:20:27,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:20:27,522 INFO L87 Difference]: Start difference. First operand 76 states and 94 transitions. Second operand 8 states. [2020-09-24 19:20:27,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:20:27,745 INFO L93 Difference]: Finished difference Result 160 states and 215 transitions. [2020-09-24 19:20:27,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 19:20:27,746 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 139 [2020-09-24 19:20:27,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:20:27,749 INFO L225 Difference]: With dead ends: 160 [2020-09-24 19:20:27,749 INFO L226 Difference]: Without dead ends: 90 [2020-09-24 19:20:27,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:20:27,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-24 19:20:27,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 84. [2020-09-24 19:20:27,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-24 19:20:27,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 104 transitions. [2020-09-24 19:20:27,771 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 104 transitions. Word has length 139 [2020-09-24 19:20:27,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:20:27,772 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 104 transitions. [2020-09-24 19:20:27,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:20:27,773 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 104 transitions. [2020-09-24 19:20:27,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-24 19:20:27,779 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:20:27,779 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 8, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:20:27,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 19:20:27,780 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:20:27,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:20:27,781 INFO L82 PathProgramCache]: Analyzing trace with hash 65892992, now seen corresponding path program 2 times [2020-09-24 19:20:27,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:20:27,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502778528] [2020-09-24 19:20:27,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:20:27,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:27,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:27,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:27,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:27,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:28,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:28,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:28,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:28,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:28,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:28,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-09-24 19:20:28,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 19:20:28,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:20:28,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:28,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 19:20:28,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 19:20:28,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 19:20:28,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:28,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:20:28,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:28,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:28,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:28,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:20:28,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:28,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:20:28,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:28,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:28,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:28,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:28,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:28,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 19:20:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:28,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:28,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:28,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:29,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:29,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:29,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:29,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:29,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:29,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:29,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:29,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:29,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-24 19:20:29,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 19:20:29,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1092 [2020-09-24 19:20:29,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:29,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 19:20:29,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 19:20:29,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-24 19:20:29,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:29,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:30,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:30,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:30,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:30,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:30,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:30,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:30,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:30,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:30,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:30,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:30,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:30,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:30,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:30,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:30,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 19:20:30,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 19:20:30,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-09-24 19:20:30,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:30,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 19:20:30,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 19:20:30,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 19:20:30,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:31,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:31,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:31,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:31,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:31,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:31,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:31,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:32,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:32,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 19:20:32,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:20:32,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-24 19:20:32,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:32,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:20:32,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:32,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 19:20:32,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:32,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:32,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:32,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:32,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 19:20:32,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:32,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 19:20:32,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:32,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:20:32,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:32,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 19:20:32,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:32,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:32,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:32,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:32,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:20:32,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:32,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:20:32,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:32,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:32,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:32,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:32,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:32,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 19:20:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:32,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:32,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:32,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:20:32,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:32,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:20:32,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:32,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:32,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:32,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:32,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:32,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:20:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:32,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:32,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:32,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:20:32,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:32,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 19:20:32,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:32,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:20:32,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:32,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:20:32,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:32,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 19:20:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:32,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:32,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:32,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:32,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:32,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:33,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:33,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 19:20:33,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:20:33,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-24 19:20:33,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:33,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:20:33,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:20:33,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 19:20:33,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:20:33,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:33,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:33,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:33,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:33,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 19:20:33,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:33,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 19:20:33,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:33,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:20:33,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:33,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 19:20:33,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:20:33,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:33,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:33,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:33,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:20:33,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:33,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:20:33,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:33,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:33,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:33,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:33,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:20:33,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 19:20:33,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:33,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:33,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:33,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:20:33,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:33,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:20:33,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:33,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:33,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:33,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:33,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:20:33,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:20:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:33,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:33,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:33,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:33,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:20:33,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:20:33,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 19:20:33,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:33,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:20:33,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:33,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:20:33,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:33,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 19:20:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:33,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:33,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:33,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:33,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:33,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:34,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:34,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 19:20:34,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:20:34,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:20:34,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:34,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:20:34,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 19:20:34,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 19:20:34,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:34,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:34,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:34,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:34,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:34,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:34,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:34,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:34,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:35,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:35,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 19:20:35,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:20:35,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:20:35,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:35,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:20:35,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:35,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 19:20:35,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:35,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:35,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:35,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:35,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 19:20:35,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:35,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 19:20:35,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:35,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:20:35,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:35,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 19:20:35,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:35,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:35,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:35,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:35,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:35,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:20:35,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:35,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:20:35,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:35,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:35,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:35,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:35,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:35,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 19:20:35,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:35,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:35,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:35,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:20:35,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:35,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:20:35,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:35,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:35,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:35,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:35,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:35,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:20:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:35,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:35,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:35,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:35,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:20:35,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:20:35,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 19:20:35,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:35,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:20:35,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:35,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:20:35,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:35,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 19:20:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:35,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:35,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:35,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:20:35,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:35,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:20:35,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:35,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:20:35,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:20:35,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:20:35,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:35,506 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 184 proven. 107 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2020-09-24 19:20:35,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502778528] [2020-09-24 19:20:35,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:20:35,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 19:20:35,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819776844] [2020-09-24 19:20:35,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 19:20:35,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:20:35,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 19:20:35,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-09-24 19:20:35,509 INFO L87 Difference]: Start difference. First operand 84 states and 104 transitions. Second operand 15 states. [2020-09-24 19:20:35,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:20:35,985 INFO L93 Difference]: Finished difference Result 202 states and 304 transitions. [2020-09-24 19:20:35,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 19:20:35,985 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 176 [2020-09-24 19:20:35,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:20:35,988 INFO L225 Difference]: With dead ends: 202 [2020-09-24 19:20:35,988 INFO L226 Difference]: Without dead ends: 120 [2020-09-24 19:20:35,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2020-09-24 19:20:35,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-09-24 19:20:35,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 114. [2020-09-24 19:20:35,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-24 19:20:35,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 152 transitions. [2020-09-24 19:20:36,000 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 152 transitions. Word has length 176 [2020-09-24 19:20:36,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:20:36,000 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 152 transitions. [2020-09-24 19:20:36,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 19:20:36,001 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 152 transitions. [2020-09-24 19:20:36,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-24 19:20:36,003 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:20:36,003 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:20:36,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 19:20:36,004 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:20:36,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:20:36,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1260071360, now seen corresponding path program 3 times [2020-09-24 19:20:36,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:20:36,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225813813] [2020-09-24 19:20:36,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:20:36,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:36,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:36,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:36,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:36,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:36,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:37,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:37,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-24 19:20:37,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:20:37,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-09-24 19:20:37,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:37,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 19:20:37,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 19:20:37,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 19:20:37,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:37,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:20:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:37,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:37,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:37,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:20:37,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:37,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:20:37,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:37,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:37,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:37,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:37,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:37,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 19:20:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:37,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:37,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:37,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:37,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:37,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:37,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:38,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:38,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-24 19:20:38,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:20:38,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-09-24 19:20:38,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:38,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 19:20:38,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:20:38,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-09-24 19:20:38,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:38,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:38,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:38,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:38,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:38,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:38,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:39,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:39,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 19:20:39,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:20:39,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-24 19:20:39,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:39,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 19:20:39,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:39,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-24 19:20:39,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:39,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:39,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:39,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:39,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:39,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 19:20:39,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:39,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 19:20:39,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:39,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:20:39,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:39,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 19:20:39,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:39,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:39,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:39,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:39,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 19:20:39,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:39,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:20:39,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:39,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:39,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:39,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:39,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:39,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:39,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:39,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:39,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:39,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:20:39,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:39,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:20:39,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:39,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:39,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:39,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:39,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:39,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 19:20:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:39,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:39,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:39,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:20:39,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:39,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:20:39,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:39,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:39,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:39,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:39,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:39,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:20:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:39,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:39,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:39,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:20:39,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:39,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:20:39,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:39,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:39,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:39,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:39,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:39,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 19:20:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:39,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:39,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:39,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:39,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 19:20:39,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:20:39,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-09-24 19:20:39,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:39,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:20:39,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:39,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 19:20:39,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:39,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:39,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:39,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:39,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:39,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:20:39,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:39,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 19:20:39,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:39,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:20:39,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:39,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:20:39,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:39,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 19:20:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:39,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:39,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:39,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:20:39,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:39,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:20:39,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:39,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:20:39,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:39,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:20:39,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:39,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-24 19:20:39,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:39,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:39,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:39,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 19:20:39,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:39,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 19:20:39,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:39,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:20:39,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:39,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 19:20:39,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:20:39,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:39,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:39,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:39,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 19:20:39,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:39,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:20:39,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:39,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:39,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:39,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:39,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:39,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:39,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:39,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:39,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:39,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:20:39,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:39,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:20:39,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:39,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:39,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:39,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:39,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:20:39,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 19:20:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:39,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:39,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:39,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:20:39,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:39,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:20:39,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:39,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:39,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:39,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:39,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:20:39,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:20:39,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:39,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:39,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:39,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:20:39,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:39,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:20:39,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:39,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:39,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:39,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:39,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:39,659 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 59 proven. 77 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2020-09-24 19:20:39,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225813813] [2020-09-24 19:20:39,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:20:39,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 19:20:39,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547797286] [2020-09-24 19:20:39,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 19:20:39,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:20:39,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 19:20:39,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:20:39,661 INFO L87 Difference]: Start difference. First operand 114 states and 152 transitions. Second operand 9 states. [2020-09-24 19:20:39,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:20:39,837 INFO L93 Difference]: Finished difference Result 148 states and 213 transitions. [2020-09-24 19:20:39,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 19:20:39,838 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 140 [2020-09-24 19:20:39,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:20:39,840 INFO L225 Difference]: With dead ends: 148 [2020-09-24 19:20:39,840 INFO L226 Difference]: Without dead ends: 142 [2020-09-24 19:20:39,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-09-24 19:20:39,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-09-24 19:20:39,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 122. [2020-09-24 19:20:39,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-24 19:20:39,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 169 transitions. [2020-09-24 19:20:39,859 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 169 transitions. Word has length 140 [2020-09-24 19:20:39,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:20:39,860 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 169 transitions. [2020-09-24 19:20:39,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 19:20:39,860 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 169 transitions. [2020-09-24 19:20:39,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-09-24 19:20:39,864 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:20:39,865 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 11, 10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:20:39,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 19:20:39,865 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:20:39,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:20:39,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1683116168, now seen corresponding path program 4 times [2020-09-24 19:20:39,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:20:39,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707257943] [2020-09-24 19:20:39,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:20:39,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:39,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:39,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:39,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:40,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:40,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:40,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:40,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:40,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:40,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:40,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:40,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-09-24 19:20:40,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 19:20:40,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-09-24 19:20:40,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:40,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:20:40,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-09-24 19:20:40,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-24 19:20:40,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:40,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:20:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:40,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:40,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:40,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:20:40,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:40,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:20:40,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:40,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:40,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:40,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:40,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:40,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 19:20:40,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:40,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:41,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:41,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:41,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:41,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:41,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:41,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:41,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-09-24 19:20:41,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:20:41,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-09-24 19:20:41,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:41,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:20:41,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-09-24 19:20:41,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-24 19:20:41,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:41,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:41,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:42,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:42,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:42,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:42,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:42,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:42,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:42,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:42,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:42,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:42,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-24 19:20:42,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 19:20:42,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-09-24 19:20:42,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:42,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 19:20:42,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 19:20:42,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 19:20:42,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:43,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:20:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:43,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:43,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:43,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:43,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:43,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:43,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:44,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:44,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 19:20:44,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:20:44,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-24 19:20:44,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:44,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:20:44,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:44,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 19:20:44,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0