/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --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_10-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:01:17,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:01:17,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:01:17,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:01:17,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:01:17,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:01:17,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:01:17,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:01:17,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:01:17,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:01:17,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:01:17,685 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:01:17,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:01:17,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:01:17,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:01:17,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:01:17,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:01:17,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:01:17,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:01:17,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:01:17,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:01:17,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:01:17,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:01:17,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:01:17,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:01:17,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:01:17,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:01:17,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:01:17,705 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:01:17,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:01:17,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:01:17,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:01:17,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:01:17,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:01:17,711 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:01:17,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:01:17,712 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:01:17,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:01:17,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:01:17,714 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:01:17,715 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:01:17,716 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 02:01:17,774 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:01:17,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:01:17,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:01:17,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:01:17,780 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:01:17,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:01:17,780 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:01:17,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:01:17,782 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:01:17,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:01:17,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:01:17,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:01:17,784 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:01:17,784 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:01:17,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:01:17,784 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:01:17,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:01:17,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:01:17,785 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:01:17,785 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:01:17,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:01:17,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:01:17,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:01:17,786 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:01:17,786 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:01:17,786 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:01:17,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:01:17,787 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:01:17,787 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:01:17,787 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-09-25 02:01:18,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:01:18,280 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:01:18,285 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:01:18,286 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:01:18,287 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:01:18,288 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_10-1.c [2020-09-25 02:01:18,365 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/110d26c20/34f875db4d344f03963399784909c04f/FLAG560914953 [2020-09-25 02:01:18,915 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:01:18,916 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_10-1.c [2020-09-25 02:01:18,925 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/110d26c20/34f875db4d344f03963399784909c04f/FLAG560914953 [2020-09-25 02:01:19,221 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/110d26c20/34f875db4d344f03963399784909c04f [2020-09-25 02:01:19,234 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:01:19,240 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:01:19,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:01:19,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:01:19,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:01:19,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:01:19" (1/1) ... [2020-09-25 02:01:19,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b03ff29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:19, skipping insertion in model container [2020-09-25 02:01:19,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:01:19" (1/1) ... [2020-09-25 02:01:19,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:01:19,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:01:19,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:01:19,478 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:01:19,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:01:19,508 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:01:19,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:19 WrapperNode [2020-09-25 02:01:19,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:01:19,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:01:19,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:01:19,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:01:19,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:19" (1/1) ... [2020-09-25 02:01:19,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:19" (1/1) ... [2020-09-25 02:01:19,530 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:19" (1/1) ... [2020-09-25 02:01:19,530 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:19" (1/1) ... [2020-09-25 02:01:19,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:19" (1/1) ... [2020-09-25 02:01:19,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:19" (1/1) ... [2020-09-25 02:01:19,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:19" (1/1) ... [2020-09-25 02:01:19,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:01:19,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:01:19,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:01:19,540 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:01:19,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:01:19,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:01:19,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:01:19,686 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 02:01:19,686 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:01:19,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:01:19,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:01:19,687 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 02:01:19,687 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:01:19,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:01:19,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:01:19,891 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:01:19,892 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 02:01:19,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:01:19 BoogieIcfgContainer [2020-09-25 02:01:19,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:01:19,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:01:19,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:01:19,903 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:01:19,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:01:19" (1/3) ... [2020-09-25 02:01:19,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d3c78f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:01:19, skipping insertion in model container [2020-09-25 02:01:19,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:19" (2/3) ... [2020-09-25 02:01:19,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d3c78f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:01:19, skipping insertion in model container [2020-09-25 02:01:19,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:01:19" (3/3) ... [2020-09-25 02:01:19,910 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_10-1.c [2020-09-25 02:01:19,928 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:01:19,938 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:01:19,971 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:01:20,004 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:01:20,005 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:01:20,005 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:01:20,005 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:01:20,006 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:01:20,006 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:01:20,006 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:01:20,006 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:01:20,031 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 02:01:20,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 02:01:20,039 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:20,041 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:20,041 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:20,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:20,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 02:01:20,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:20,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776670928] [2020-09-25 02:01:20,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:20,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:20,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:20,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:20,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 02:01:20,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:20,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-25 02:01:20,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:20,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:20,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:01:20,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:01:20,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 02:01:20,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:20,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:20,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:20,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:20,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:20,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:20,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:01:20,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:20,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:20,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:20,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:20,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:20,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:20,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:20,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:20,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:20,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:20,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 02:01:20,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:20,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:20,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:20,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:20,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:20,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:01:20,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776670928] [2020-09-25 02:01:20,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:01:20,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:01:20,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219797881] [2020-09-25 02:01:20,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:01:20,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:20,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:01:20,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:01:20,565 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 02:01:20,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:20,690 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 02:01:20,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:01:20,692 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 02:01:20,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:20,706 INFO L225 Difference]: With dead ends: 44 [2020-09-25 02:01:20,706 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 02:01:20,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:01:20,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 02:01:20,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 02:01:20,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 02:01:20,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 02:01:20,768 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 02:01:20,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:20,769 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 02:01:20,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:01:20,769 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 02:01:20,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 02:01:20,772 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:20,772 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:20,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:01:20,773 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:20,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:20,773 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 02:01:20,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:20,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621750207] [2020-09-25 02:01:20,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:20,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:20,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:20,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:20,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 02:01:20,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:20,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-25 02:01:20,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:20,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:20,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 02:01:20,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:20,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:21,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:21,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:21,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:21,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:21,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:21,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:01:21,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:21,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:21,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:21,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:21,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:21,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:21,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:21,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:21,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:21,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:21,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 02:01:21,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:21,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:01:21,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:21,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:21,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:21,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:01:21,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621750207] [2020-09-25 02:01:21,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:01:21,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:01:21,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490578451] [2020-09-25 02:01:21,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:01:21,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:21,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:01:21,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:01:21,061 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 02:01:21,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:21,095 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 02:01:21,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:01:21,096 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 02:01:21,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:21,097 INFO L225 Difference]: With dead ends: 36 [2020-09-25 02:01:21,098 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 02:01:21,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:01:21,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 02:01:21,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 02:01:21,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 02:01:21,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 02:01:21,108 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 02:01:21,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:21,108 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 02:01:21,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:01:21,109 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 02:01:21,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 02:01:21,110 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:21,111 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:21,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:01:21,111 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:21,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:21,112 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 02:01:21,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:21,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10188014] [2020-09-25 02:01:21,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:21,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:21,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:21,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:21,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:23,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:23,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 02:01:23,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:01:23,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1886 [2020-09-25 02:01:23,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:23,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:23,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 02:01:23,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:23,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:23,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:23,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:23,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:23,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:23,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:23,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:23,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:01:23,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:23,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:23,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:23,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:23,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:23,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:23,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:23,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:23,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:23,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 02:01:23,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:23,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 02:01:23,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:23,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:23,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 02:01:23,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:23,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:23,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:23,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:23,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:23,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:23,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:23,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 02:01:23,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:23,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:23,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:23,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:23,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:23,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 02:01:23,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:23,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:23,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:23,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:23,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:23,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:01:23,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:23,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:23,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:01:23,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:23,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:23,190 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 02:01:23,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10188014] [2020-09-25 02:01:23,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:01:23,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 02:01:23,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126548009] [2020-09-25 02:01:23,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:01:23,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:23,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:01:23,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:01:23,199 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-09-25 02:01:23,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:23,287 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2020-09-25 02:01:23,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:01:23,288 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-25 02:01:23,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:23,290 INFO L225 Difference]: With dead ends: 52 [2020-09-25 02:01:23,290 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 02:01:23,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:01:23,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 02:01:23,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 02:01:23,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 02:01:23,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-25 02:01:23,299 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 33 [2020-09-25 02:01:23,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:23,300 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-25 02:01:23,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:01:23,300 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-25 02:01:23,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 02:01:23,302 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:23,302 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:23,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:01:23,303 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:23,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:23,303 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 1 times [2020-09-25 02:01:23,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:23,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768681069] [2020-09-25 02:01:23,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:23,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:23,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:23,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:23,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:24,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:24,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 02:01:24,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:01:24,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1064 [2020-09-25 02:01:24,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:24,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:24,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:01:24,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 02:01:24,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:24,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:24,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:24,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:24,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:24,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:24,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:24,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:01:24,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:24,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:24,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:24,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:24,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:24,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:24,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:24,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:24,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:24,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:01:24,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:24,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-09-25 02:01:24,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:24,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:24,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:24,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 02:01:24,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:24,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:24,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:24,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:24,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:24,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:24,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:01:24,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:24,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:24,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:24,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:24,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:24,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:24,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:24,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:24,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:24,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:24,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:01:24,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:24,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:24,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:24,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:24,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:24,794 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 02:01:24,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768681069] [2020-09-25 02:01:24,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:01:24,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 02:01:24,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65450274] [2020-09-25 02:01:24,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:01:24,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:24,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:01:24,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:01:24,799 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 6 states. [2020-09-25 02:01:24,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:24,890 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-09-25 02:01:24,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:01:24,893 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-09-25 02:01:24,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:24,895 INFO L225 Difference]: With dead ends: 42 [2020-09-25 02:01:24,895 INFO L226 Difference]: Without dead ends: 36 [2020-09-25 02:01:24,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:01:24,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-25 02:01:24,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-09-25 02:01:24,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-25 02:01:24,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-09-25 02:01:24,916 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 34 [2020-09-25 02:01:24,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:24,917 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-09-25 02:01:24,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:01:24,917 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-09-25 02:01:24,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 02:01:24,923 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:24,923 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:24,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:01:24,925 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:24,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:24,928 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 02:01:24,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:24,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127844920] [2020-09-25 02:01:24,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:24,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:24,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:24,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:25,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:25,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:25,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:26,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:26,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 02:01:26,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:01:26,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1639 [2020-09-25 02:01:26,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:26,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:26,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:01:26,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 02:01:26,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:26,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:26,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:26,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:26,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:26,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:26,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:01:26,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:26,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:26,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:26,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:26,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:26,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:26,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:26,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:26,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:26,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:27,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:27,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:01:27,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:01:27,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 428 [2020-09-25 02:01:27,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:27,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:27,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:01:27,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 02:01:27,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:27,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:27,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:27,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:27,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:27,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:27,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 02:01:27,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:27,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:27,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:27,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:01:27,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:27,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:27,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:27,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:27,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:27,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:27,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:27,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 02:01:27,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:27,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:27,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:27,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:27,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:27,141 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 02:01:27,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127844920] [2020-09-25 02:01:27,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:01:27,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:01:27,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689712008] [2020-09-25 02:01:27,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:01:27,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:27,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:01:27,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:01:27,144 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 7 states. [2020-09-25 02:01:27,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:27,273 INFO L93 Difference]: Finished difference Result 74 states and 96 transitions. [2020-09-25 02:01:27,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 02:01:27,274 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 02:01:27,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:27,276 INFO L225 Difference]: With dead ends: 74 [2020-09-25 02:01:27,276 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 02:01:27,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:01:27,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 02:01:27,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-25 02:01:27,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 02:01:27,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-25 02:01:27,286 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 35 [2020-09-25 02:01:27,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:27,286 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-25 02:01:27,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:01:27,287 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-25 02:01:27,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 02:01:27,288 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:27,289 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:27,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:01:27,289 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:27,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:27,289 INFO L82 PathProgramCache]: Analyzing trace with hash 99184320, now seen corresponding path program 2 times [2020-09-25 02:01:27,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:27,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401915484] [2020-09-25 02:01:27,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:27,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:27,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:27,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:27,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:28,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:32,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:32,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 02:01:32,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:01:32,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 02:01:32,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:32,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:01:32,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:01:32,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 02:01:32,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:32,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:32,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:32,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:32,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:32,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:32,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:01:32,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:32,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:32,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:32,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:32,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:32,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:32,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:32,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:32,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:34,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:34,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:01:34,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:01:34,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1711 [2020-09-25 02:01:34,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:34,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:34,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:34,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:01:34,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:34,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:34,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:34,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:34,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:34,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:01:34,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:34,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 02:01:34,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:34,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:34,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:34,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 02:01:34,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:34,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:34,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:34,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:34,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:34,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:34,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:01:34,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:34,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:34,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:34,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:34,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:34,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:34,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:34,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:34,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:34,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:34,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:34,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:01:34,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:34,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:34,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:34,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:34,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:34,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:01:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:34,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:34,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:34,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:34,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:34,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 02:01:34,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:34,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:34,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:34,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:01:34,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:34,189 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 02:01:34,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401915484] [2020-09-25 02:01:34,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:01:34,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:01:34,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745741649] [2020-09-25 02:01:34,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:01:34,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:34,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:01:34,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:01:34,192 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 7 states. [2020-09-25 02:01:34,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:34,314 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-09-25 02:01:34,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:01:34,315 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-25 02:01:34,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:34,319 INFO L225 Difference]: With dead ends: 52 [2020-09-25 02:01:34,319 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 02:01:34,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:01:34,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 02:01:34,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-25 02:01:34,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 02:01:34,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-25 02:01:34,338 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 52 [2020-09-25 02:01:34,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:34,339 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-25 02:01:34,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:01:34,340 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-25 02:01:34,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 02:01:34,346 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:34,346 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:34,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:01:34,348 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:34,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:34,348 INFO L82 PathProgramCache]: Analyzing trace with hash 501566307, now seen corresponding path program 3 times [2020-09-25 02:01:34,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:34,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390493382] [2020-09-25 02:01:34,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:34,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:34,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:34,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:34,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:34,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:34,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:34,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:34,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:37,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:37,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:39,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:39,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 02:01:39,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 02:01:39,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 02:01:39,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:39,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:01:39,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:01:39,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 02:01:39,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:39,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:39,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:39,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:39,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:39,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:39,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:01:39,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:39,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:39,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:39,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:39,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:39,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:39,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:39,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:39,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:39,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:39,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:39,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:39,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:40,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:40,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:44,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:44,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:44,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 02:01:44,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 02:01:44,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 02:01:44,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:44,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:01:44,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:01:44,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 02:01:44,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:44,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:44,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:44,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:44,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:44,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:44,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:44,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:01:44,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:01:44,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-09-25 02:01:44,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:44,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:44,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:44,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:01:44,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:44,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:44,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:44,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:44,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:44,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:44,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:01:44,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:44,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:44,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:44,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:01:44,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:44,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:44,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:44,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:44,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:44,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:44,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:44,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:01:44,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:44,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:44,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:44,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:44,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:44,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:01:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:44,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:44,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:45,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:45,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:45,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:45,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:46,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:46,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:01:46,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:01:46,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1575 [2020-09-25 02:01:46,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:46,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:46,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:46,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:01:46,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:46,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:46,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:46,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:46,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:46,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:46,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:46,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:01:46,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:01:46,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-09-25 02:01:46,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:46,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:46,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:46,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:01:46,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:46,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:46,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:46,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:46,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:46,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:46,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:46,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:01:46,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:46,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:46,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:46,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:46,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:46,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:46,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:46,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:46,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:46,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:46,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:46,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:01:46,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:46,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:46,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:46,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:46,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:46,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:01:46,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:46,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:46,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:46,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:46,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:46,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:01:46,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:46,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:46,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:46,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:46,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:46,955 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 65 proven. 80 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-09-25 02:01:46,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390493382] [2020-09-25 02:01:46,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:01:46,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 02:01:46,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290298150] [2020-09-25 02:01:46,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 02:01:46,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:46,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 02:01:46,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:01:46,958 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 10 states. [2020-09-25 02:01:47,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:47,139 INFO L93 Difference]: Finished difference Result 92 states and 118 transitions. [2020-09-25 02:01:47,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 02:01:47,139 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-09-25 02:01:47,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:47,141 INFO L225 Difference]: With dead ends: 92 [2020-09-25 02:01:47,141 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 02:01:47,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-09-25 02:01:47,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 02:01:47,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-09-25 02:01:47,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 02:01:47,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2020-09-25 02:01:47,153 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 87 [2020-09-25 02:01:47,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:47,153 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2020-09-25 02:01:47,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 02:01:47,153 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2020-09-25 02:01:47,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 02:01:47,155 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:47,156 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:47,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 02:01:47,156 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:47,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:47,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 4 times [2020-09-25 02:01:47,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:47,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893143536] [2020-09-25 02:01:47,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:47,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:47,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:47,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:47,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:47,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:47,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:47,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:47,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:48,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:49,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:49,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:52,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:52,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 02:01:52,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 02:01:52,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 02:01:52,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:52,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:01:52,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:01:52,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 02:01:52,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:52,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:52,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:52,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:52,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:52,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:52,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:52,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:01:52,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:52,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:52,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:52,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:52,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:52,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:52,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:52,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:52,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:52,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:52,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:52,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:54,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:54,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:54,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:54,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:54,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:57,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:57,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 02:01:57,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 02:01:57,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 02:01:57,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:57,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:01:57,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 02:01:57,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 02:01:57,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:57,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:57,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:57,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:57,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:01:57,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:57,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 02:01:57,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:57,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:57,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:57,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:57,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:57,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:57,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:57,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:57,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:01:57,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:57,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:01:57,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:57,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:57,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:57,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:57,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:57,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:57,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:57,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:57,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:57,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:57,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:01:57,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:57,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:57,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:57,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:57,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:57,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:57,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:57,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:57,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:57,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:57,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:01:57,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:57,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:57,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:57,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:57,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:57,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:01:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:57,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:57,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:57,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:57,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:57,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:01:57,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:57,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:57,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:57,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:57,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:57,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 02:01:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:57,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:57,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:57,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:57,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:57,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:59,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:59,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 02:01:59,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:01:59,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2350 [2020-09-25 02:01:59,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:59,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:01:59,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:01:59,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 02:01:59,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:59,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:59,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:59,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:59,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:59,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:59,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:59,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:01,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:01,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:02:01,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:02:01,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2290 [2020-09-25 02:02:01,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:01,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:02:01,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:01,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 02:02:01,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:01,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:01,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:01,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:02,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:02,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:02,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:02,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:02:02,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:02:02,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-25 02:02:02,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:02,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:02:02,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:02,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:02:02,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:02,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:02,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:02,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:02,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:02,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:02,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:02:02,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:02,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:02:02,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:02,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:02:02,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:02,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:02:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:02,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:02,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:02,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:02:02,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:02,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:02:02,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:02,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:02:02,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:02,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:02:02,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:02,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:02:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:02,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:02,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:02,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:02,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:02,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:02:02,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:02,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:02:02,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:02,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:02:02,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:02,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 02:02:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:02,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:02,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:02,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:02,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:02,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:02:02,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:02,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:02:02,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:02:02,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:02:02,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:02,332 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 223 proven. 24 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2020-09-25 02:02:02,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893143536] [2020-09-25 02:02:02,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:02:02,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 02:02:02,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876620383] [2020-09-25 02:02:02,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 02:02:02,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:02:02,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 02:02:02,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:02:02,334 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand 11 states. [2020-09-25 02:02:02,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:02:02,563 INFO L93 Difference]: Finished difference Result 105 states and 133 transitions. [2020-09-25 02:02:02,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 02:02:02,566 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 123 [2020-09-25 02:02:02,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:02:02,571 INFO L225 Difference]: With dead ends: 105 [2020-09-25 02:02:02,571 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 02:02:02,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-09-25 02:02:02,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 02:02:02,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-09-25 02:02:02,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 02:02:02,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2020-09-25 02:02:02,582 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 123 [2020-09-25 02:02:02,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:02:02,582 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2020-09-25 02:02:02,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 02:02:02,582 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2020-09-25 02:02:02,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-09-25 02:02:02,584 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:02:02,584 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:02:02,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 02:02:02,584 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:02:02,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:02:02,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1885389560, now seen corresponding path program 5 times [2020-09-25 02:02:02,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:02:02,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20499436] [2020-09-25 02:02:02,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:02:02,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:02,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:02,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:02,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:02,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:02,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:03,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:03,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:06,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:07,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:07,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:07,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:07,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:07,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:07,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:07,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:07,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-25 02:02:07,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 02:02:07,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 02:02:07,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:07,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:02:07,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:02:07,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 02:02:07,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:07,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:02:07,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:07,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:07,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:07,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:02:07,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:07,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:02:07,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:07,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:07,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:07,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:07,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:07,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:02:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:07,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:07,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:07,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:07,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:07,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:07,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:08,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:08,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:08,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:08,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:08,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:09,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:09,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:09,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:09,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:09,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:12,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:12,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 02:02:12,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 02:02:12,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 02:02:12,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:12,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 02:02:12,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:02:12,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 02:02:12,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:12,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:12,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:12,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:12,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:12,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:12,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:12,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:13,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking...