/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:13:09,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:13:09,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:13:09,915 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:13:09,915 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:13:09,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:13:09,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:13:09,933 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:13:09,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:13:09,941 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:13:09,942 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:13:09,943 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:13:09,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:13:09,947 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:13:09,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:13:09,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:13:09,956 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:13:09,957 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:13:09,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:13:09,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:13:09,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:13:09,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:13:09,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:13:09,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:13:09,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:13:09,996 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:13:09,996 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:13:09,997 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:13:09,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:13:10,001 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:13:10,002 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:13:10,003 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:13:10,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:13:10,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:13:10,013 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:13:10,013 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:13:10,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:13:10,014 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:13:10,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:13:10,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:13:10,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:13:10,019 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 [2020-10-14 03:13:10,064 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:13:10,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:13:10,067 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:13:10,068 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:13:10,068 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:13:10,068 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:13:10,068 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:13:10,069 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:13:10,069 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:13:10,069 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:13:10,070 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:13:10,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:13:10,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:13:10,071 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:13:10,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:13:10,072 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:13:10,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:13:10,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:13:10,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:13:10,073 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:13:10,073 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:13:10,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:13:10,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:13:10,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:13:10,074 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:13:10,074 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:13:10,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:13:10,074 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:13:10,074 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:13:10,075 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 03:13:10,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:13:10,505 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:13:10,512 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:13:10,513 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:13:10,514 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:13:10,514 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label59.c [2020-10-14 03:13:10,585 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69456acde/93bec67ca8d5468b80cbdb5149c6ba89/FLAG2f58cb902 [2020-10-14 03:13:11,500 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:13:11,501 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label59.c [2020-10-14 03:13:11,549 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69456acde/93bec67ca8d5468b80cbdb5149c6ba89/FLAG2f58cb902 [2020-10-14 03:13:11,943 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69456acde/93bec67ca8d5468b80cbdb5149c6ba89 [2020-10-14 03:13:11,954 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:13:11,955 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:13:11,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:13:11,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:13:11,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:13:11,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:13:11" (1/1) ... [2020-10-14 03:13:11,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12925ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:13:11, skipping insertion in model container [2020-10-14 03:13:11,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:13:11" (1/1) ... [2020-10-14 03:13:11,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:13:12,180 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:13:14,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:13:14,232 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:13:15,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:13:15,160 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:13:15,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:13:15 WrapperNode [2020-10-14 03:13:15,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:13:15,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:13:15,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:13:15,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:13:15,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:13:15" (1/1) ... [2020-10-14 03:13:15,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:13:15" (1/1) ... [2020-10-14 03:13:15,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:13:15" (1/1) ... [2020-10-14 03:13:15,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:13:15" (1/1) ... [2020-10-14 03:13:15,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:13:15" (1/1) ... [2020-10-14 03:13:15,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:13:15" (1/1) ... [2020-10-14 03:13:15,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:13:15" (1/1) ... [2020-10-14 03:13:15,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:13:15,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:13:15,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:13:15,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:13:15,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:13:15" (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 [2020-10-14 03:13:15,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:13:15,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:13:15,704 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:13:15,704 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:13:15,704 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 03:13:15,705 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 03:13:15,705 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:13:15,706 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:13:15,706 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:13:15,707 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 03:13:15,707 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 03:13:15,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:13:15,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:13:15,707 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:13:15,707 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:13:15,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:13:15,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:13:27,213 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:13:27,214 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:13:27,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:13:27 BoogieIcfgContainer [2020-10-14 03:13:27,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:13:27,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:13:27,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:13:27,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:13:27,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:13:11" (1/3) ... [2020-10-14 03:13:27,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1922027 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:13:27, skipping insertion in model container [2020-10-14 03:13:27,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:13:15" (2/3) ... [2020-10-14 03:13:27,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1922027 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:13:27, skipping insertion in model container [2020-10-14 03:13:27,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:13:27" (3/3) ... [2020-10-14 03:13:27,250 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label59.c [2020-10-14 03:13:27,262 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:13:27,273 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:13:27,290 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:13:27,324 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:13:27,324 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:13:27,324 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:13:27,324 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:13:27,324 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:13:27,324 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:13:27,325 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:13:27,325 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:13:27,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 03:13:27,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 03:13:27,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:13:27,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:13:27,380 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:13:27,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:13:27,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1177685569, now seen corresponding path program 1 times [2020-10-14 03:13:27,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:13:27,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61290882] [2020-10-14 03:13:27,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:13:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:27,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:28,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:28,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 03:13:28,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:13:28,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 581 [2020-10-14 03:13:28,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:28,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:28,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:13:28,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:13:28,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 03:13:28,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:13:28,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:13:28,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:28,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:28,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:28,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:13:28,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:13:28,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 03:13:28,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:28,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:28,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:13:28,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:13:28,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:13:28,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:13:28,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:13:28,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61290882] [2020-10-14 03:13:28,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:13:28,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 03:13:28,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823325684] [2020-10-14 03:13:28,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:13:28,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:13:28,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:13:28,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:13:28,409 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 5 states. [2020-10-14 03:13:52,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:13:52,093 INFO L93 Difference]: Finished difference Result 4149 states and 7720 transitions. [2020-10-14 03:13:52,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 03:13:52,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-10-14 03:13:52,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:13:52,152 INFO L225 Difference]: With dead ends: 4149 [2020-10-14 03:13:52,153 INFO L226 Difference]: Without dead ends: 2932 [2020-10-14 03:13:52,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:13:52,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2020-10-14 03:13:52,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 2811. [2020-10-14 03:13:52,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2811 states. [2020-10-14 03:13:52,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 4741 transitions. [2020-10-14 03:13:52,395 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 4741 transitions. Word has length 52 [2020-10-14 03:13:52,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:13:52,397 INFO L479 AbstractCegarLoop]: Abstraction has 2811 states and 4741 transitions. [2020-10-14 03:13:52,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:13:52,397 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 4741 transitions. [2020-10-14 03:13:52,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 03:13:52,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:13:52,405 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:13:52,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:13:52,406 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:13:52,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:13:52,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1651499399, now seen corresponding path program 1 times [2020-10-14 03:13:52,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:13:52,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671983958] [2020-10-14 03:13:52,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:13:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:52,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:52,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:54,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:54,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 03:13:54,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:13:54,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1592 [2020-10-14 03:13:54,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:54,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:54,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:13:54,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 03:13:54,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 03:13:54,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:13:54,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:13:54,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:54,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:54,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:54,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:13:54,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:13:54,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:13:54,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:54,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:54,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:13:54,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:13:54,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:13:54,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:13:54,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:13:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:54,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:54,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:54,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 03:13:54,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:13:54,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 03:13:54,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:54,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:54,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:13:54,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:13:54,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 03:13:54,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:13:54,508 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:13:54,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671983958] [2020-10-14 03:13:54,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:13:54,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:13:54,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025345845] [2020-10-14 03:13:54,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:13:54,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:13:54,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:13:54,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:13:54,513 INFO L87 Difference]: Start difference. First operand 2811 states and 4741 transitions. Second operand 5 states. [2020-10-14 03:14:16,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:14:16,056 INFO L93 Difference]: Finished difference Result 8087 states and 13834 transitions. [2020-10-14 03:14:16,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:14:16,058 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-10-14 03:14:16,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:14:16,091 INFO L225 Difference]: With dead ends: 8087 [2020-10-14 03:14:16,092 INFO L226 Difference]: Without dead ends: 5282 [2020-10-14 03:14:16,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:14:16,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5282 states. [2020-10-14 03:14:16,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5282 to 5277. [2020-10-14 03:14:16,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5277 states. [2020-10-14 03:14:16,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5277 states to 5277 states and 8233 transitions. [2020-10-14 03:14:16,280 INFO L78 Accepts]: Start accepts. Automaton has 5277 states and 8233 transitions. Word has length 137 [2020-10-14 03:14:16,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:14:16,283 INFO L479 AbstractCegarLoop]: Abstraction has 5277 states and 8233 transitions. [2020-10-14 03:14:16,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:14:16,284 INFO L276 IsEmpty]: Start isEmpty. Operand 5277 states and 8233 transitions. [2020-10-14 03:14:16,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 03:14:16,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:14:16,300 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:14:16,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:14:16,303 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:14:16,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:14:16,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1315380295, now seen corresponding path program 1 times [2020-10-14 03:14:16,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:14:16,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558684515] [2020-10-14 03:14:16,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:14:16,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:14:16,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:16,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:17,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:14:17,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 03:14:17,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:14:17,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1216 [2020-10-14 03:14:17,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:14:17,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:14:17,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:14:17,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-14 03:14:17,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 03:14:17,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:14:17,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:14:17,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:14:17,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:17,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:14:17,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:14:17,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:14:17,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:14:17,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:14:17,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:14:17,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:14:17,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:14:17,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:14:17,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:14:17,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:14:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:14:17,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:17,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:14:17,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 03:14:17,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:14:17,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 03:14:17,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:14:17,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:14:17,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:14:17,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:14:17,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 03:14:17,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:14:18,149 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:14:18,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558684515] [2020-10-14 03:14:18,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:14:18,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:14:18,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833349700] [2020-10-14 03:14:18,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:14:18,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:14:18,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:14:18,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:14:18,154 INFO L87 Difference]: Start difference. First operand 5277 states and 8233 transitions. Second operand 5 states. [2020-10-14 03:14:40,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:14:40,352 INFO L93 Difference]: Finished difference Result 12265 states and 20032 transitions. [2020-10-14 03:14:40,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:14:40,354 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-14 03:14:40,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:14:40,415 INFO L225 Difference]: With dead ends: 12265 [2020-10-14 03:14:40,415 INFO L226 Difference]: Without dead ends: 8638 [2020-10-14 03:14:40,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:14:40,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8638 states. [2020-10-14 03:14:40,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8638 to 8625. [2020-10-14 03:14:40,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8625 states. [2020-10-14 03:14:40,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8625 states to 8625 states and 12333 transitions. [2020-10-14 03:14:40,772 INFO L78 Accepts]: Start accepts. Automaton has 8625 states and 12333 transitions. Word has length 153 [2020-10-14 03:14:40,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:14:40,774 INFO L479 AbstractCegarLoop]: Abstraction has 8625 states and 12333 transitions. [2020-10-14 03:14:40,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:14:40,775 INFO L276 IsEmpty]: Start isEmpty. Operand 8625 states and 12333 transitions. [2020-10-14 03:14:40,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-14 03:14:40,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:14:40,778 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:14:40,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:14:40,779 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:14:40,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:14:40,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1139497185, now seen corresponding path program 1 times [2020-10-14 03:14:40,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:14:40,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929958048] [2020-10-14 03:14:40,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:14:40,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:14:40,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:40,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:41,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:42,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:14:42,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 03:14:42,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:14:42,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1920 [2020-10-14 03:14:42,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:14:42,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:14:42,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:14:42,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-14 03:14:42,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 03:14:42,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:14:42,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:14:42,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:14:42,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:42,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:14:42,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:14:42,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:14:42,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:14:42,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:14:42,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:14:42,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:14:42,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:14:42,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:14:42,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:14:42,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:14:42,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:14:42,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:43,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:14:43,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 03:14:43,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:14:43,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 03:14:43,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:14:43,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:14:43,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:14:43,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:14:43,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 03:14:43,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:14:43,183 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:14:43,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929958048] [2020-10-14 03:14:43,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:14:43,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:14:43,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975852488] [2020-10-14 03:14:43,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:14:43,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:14:43,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:14:43,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:14:43,295 INFO L87 Difference]: Start difference. First operand 8625 states and 12333 transitions. Second operand 5 states. [2020-10-14 03:15:07,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:15:07,253 INFO L93 Difference]: Finished difference Result 21419 states and 31613 transitions. [2020-10-14 03:15:07,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:15:07,255 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-14 03:15:07,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:15:07,309 INFO L225 Difference]: With dead ends: 21419 [2020-10-14 03:15:07,310 INFO L226 Difference]: Without dead ends: 12800 [2020-10-14 03:15:07,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:15:07,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12800 states. [2020-10-14 03:15:07,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12800 to 12782. [2020-10-14 03:15:07,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12782 states. [2020-10-14 03:15:07,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12782 states to 12782 states and 17313 transitions. [2020-10-14 03:15:07,737 INFO L78 Accepts]: Start accepts. Automaton has 12782 states and 17313 transitions. Word has length 154 [2020-10-14 03:15:07,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:15:07,737 INFO L479 AbstractCegarLoop]: Abstraction has 12782 states and 17313 transitions. [2020-10-14 03:15:07,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:15:07,738 INFO L276 IsEmpty]: Start isEmpty. Operand 12782 states and 17313 transitions. [2020-10-14 03:15:07,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-14 03:15:07,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:15:07,742 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:15:07,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:15:07,742 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:15:07,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:15:07,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1320893455, now seen corresponding path program 1 times [2020-10-14 03:15:07,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:15:07,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208635464] [2020-10-14 03:15:07,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:15:07,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:15:07,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:07,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:09,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:15:09,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-14 03:15:09,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:15:09,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1348 [2020-10-14 03:15:09,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:15:09,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:15:09,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:15:09,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 03:15:09,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 03:15:09,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:15:09,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:15:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:15:09,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:09,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:15:09,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:15:09,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:15:09,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:15:09,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:15:09,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:15:09,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:15:09,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:15:09,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:15:09,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:15:09,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:15:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:15:09,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:09,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:15:09,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 03:15:09,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:15:09,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 03:15:09,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:15:09,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:15:09,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:15:09,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:15:09,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 03:15:09,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 03:15:09,494 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:15:09,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208635464] [2020-10-14 03:15:09,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:15:09,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:15:09,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320592877] [2020-10-14 03:15:09,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:15:09,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:15:09,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:15:09,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:15:09,497 INFO L87 Difference]: Start difference. First operand 12782 states and 17313 transitions. Second operand 5 states. [2020-10-14 03:15:33,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:15:33,425 INFO L93 Difference]: Finished difference Result 36947 states and 51408 transitions. [2020-10-14 03:15:33,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:15:33,430 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-14 03:15:33,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:15:33,528 INFO L225 Difference]: With dead ends: 36947 [2020-10-14 03:15:33,529 INFO L226 Difference]: Without dead ends: 24171 [2020-10-14 03:15:33,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:15:33,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24171 states. [2020-10-14 03:15:34,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24171 to 24151. [2020-10-14 03:15:34,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24151 states. [2020-10-14 03:15:34,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24151 states to 24151 states and 31587 transitions. [2020-10-14 03:15:34,256 INFO L78 Accepts]: Start accepts. Automaton has 24151 states and 31587 transitions. Word has length 165 [2020-10-14 03:15:34,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:15:34,256 INFO L479 AbstractCegarLoop]: Abstraction has 24151 states and 31587 transitions. [2020-10-14 03:15:34,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:15:34,257 INFO L276 IsEmpty]: Start isEmpty. Operand 24151 states and 31587 transitions. [2020-10-14 03:15:34,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-14 03:15:34,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:15:34,262 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:15:34,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:15:34,263 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:15:34,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:15:34,263 INFO L82 PathProgramCache]: Analyzing trace with hash 799839160, now seen corresponding path program 1 times [2020-10-14 03:15:34,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:15:34,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397762422] [2020-10-14 03:15:34,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:15:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:15:34,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:34,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:15:34,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-14 03:15:34,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:15:34,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 564 [2020-10-14 03:15:34,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:15:34,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:15:34,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:15:34,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:15:34,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 03:15:34,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:15:35,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:15:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:15:35,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:35,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:15:35,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:15:35,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:15:35,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:15:35,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:15:35,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:15:35,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:15:35,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:15:35,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:15:35,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:15:35,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:15:36,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:15:36,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:36,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:15:36,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 03:15:36,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:15:36,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-14 03:15:36,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:15:36,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:15:36,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:15:36,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:15:36,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 03:15:36,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:15:36,387 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:15:36,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397762422] [2020-10-14 03:15:36,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:15:36,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 03:15:36,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363589850] [2020-10-14 03:15:36,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:15:36,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:15:36,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:15:36,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:15:36,390 INFO L87 Difference]: Start difference. First operand 24151 states and 31587 transitions. Second operand 7 states. [2020-10-14 03:16:06,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:16:06,689 INFO L93 Difference]: Finished difference Result 48654 states and 64664 transitions. [2020-10-14 03:16:06,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:16:06,691 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 173 [2020-10-14 03:16:06,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:16:06,791 INFO L225 Difference]: With dead ends: 48654 [2020-10-14 03:16:06,791 INFO L226 Difference]: Without dead ends: 24509 [2020-10-14 03:16:06,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:16:06,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24509 states. [2020-10-14 03:16:07,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24509 to 24410. [2020-10-14 03:16:07,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24410 states. [2020-10-14 03:16:07,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24410 states to 24410 states and 29883 transitions. [2020-10-14 03:16:07,432 INFO L78 Accepts]: Start accepts. Automaton has 24410 states and 29883 transitions. Word has length 173 [2020-10-14 03:16:07,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:16:07,432 INFO L479 AbstractCegarLoop]: Abstraction has 24410 states and 29883 transitions. [2020-10-14 03:16:07,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:16:07,433 INFO L276 IsEmpty]: Start isEmpty. Operand 24410 states and 29883 transitions. [2020-10-14 03:16:07,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-14 03:16:07,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:16:07,439 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:16:07,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:16:07,440 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:16:07,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:16:07,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1424787660, now seen corresponding path program 1 times [2020-10-14 03:16:07,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:16:07,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205790049] [2020-10-14 03:16:07,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:16:07,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:16:07,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:16:07,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:16:08,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:16:08,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-14 03:16:08,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:16:08,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1122 [2020-10-14 03:16:08,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:16:08,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:16:08,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:16:08,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 171 [2020-10-14 03:16:08,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 03:16:08,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:16:08,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:16:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:16:08,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:16:08,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:16:08,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:16:08,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:16:08,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:16:08,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:16:08,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:16:08,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:16:08,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:16:08,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:16:08,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:16:08,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:16:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:16:08,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:16:08,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:16:08,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 03:16:08,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:16:08,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-14 03:16:08,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:16:08,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:16:08,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:16:08,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:16:08,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-14 03:16:08,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:16:09,159 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:16:09,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205790049] [2020-10-14 03:16:09,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:16:09,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:16:09,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212018333] [2020-10-14 03:16:09,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:16:09,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:16:09,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:16:09,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:16:09,167 INFO L87 Difference]: Start difference. First operand 24410 states and 29883 transitions. Second operand 5 states. [2020-10-14 03:16:35,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:16:35,242 INFO L93 Difference]: Finished difference Result 68470 states and 85910 transitions. [2020-10-14 03:16:35,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:16:35,244 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 213 [2020-10-14 03:16:35,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:16:35,351 INFO L225 Difference]: With dead ends: 68470 [2020-10-14 03:16:35,351 INFO L226 Difference]: Without dead ends: 44066 [2020-10-14 03:16:35,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:16:35,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44066 states. [2020-10-14 03:16:35,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44066 to 44019. [2020-10-14 03:16:35,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44019 states. [2020-10-14 03:16:36,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44019 states to 44019 states and 52107 transitions. [2020-10-14 03:16:36,072 INFO L78 Accepts]: Start accepts. Automaton has 44019 states and 52107 transitions. Word has length 213 [2020-10-14 03:16:36,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:16:36,072 INFO L479 AbstractCegarLoop]: Abstraction has 44019 states and 52107 transitions. [2020-10-14 03:16:36,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:16:36,073 INFO L276 IsEmpty]: Start isEmpty. Operand 44019 states and 52107 transitions. [2020-10-14 03:16:36,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-14 03:16:36,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:16:36,080 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:16:36,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:16:36,081 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:16:36,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:16:36,081 INFO L82 PathProgramCache]: Analyzing trace with hash 877333941, now seen corresponding path program 1 times [2020-10-14 03:16:36,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:16:36,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208179404] [2020-10-14 03:16:36,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:16:36,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:16:36,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:16:36,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:16:36,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:16:36,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:16:37,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:16:37,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-14 03:16:37,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:16:37,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1675 [2020-10-14 03:16:37,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:16:37,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:16:37,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:16:37,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 176 [2020-10-14 03:16:37,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 03:16:37,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:16:37,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:16:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:16:37,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:16:37,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:16:37,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:16:37,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:16:37,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:16:37,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:16:37,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:16:37,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:16:37,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:16:37,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:16:37,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:16:37,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:16:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:16:38,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:16:38,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:16:38,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-14 03:16:38,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:16:38,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-14 03:16:38,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:16:38,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:16:38,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:16:38,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:16:38,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-14 03:16:38,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:16:38,279 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:16:38,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208179404] [2020-10-14 03:16:38,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:16:38,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:16:38,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171633672] [2020-10-14 03:16:38,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:16:38,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:16:38,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:16:38,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:16:38,282 INFO L87 Difference]: Start difference. First operand 44019 states and 52107 transitions. Second operand 5 states. [2020-10-14 03:17:04,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:17:04,491 INFO L93 Difference]: Finished difference Result 107637 states and 131058 transitions. [2020-10-14 03:17:04,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:17:04,493 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 220 [2020-10-14 03:17:04,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:17:04,633 INFO L225 Difference]: With dead ends: 107637 [2020-10-14 03:17:04,634 INFO L226 Difference]: Without dead ends: 63624 [2020-10-14 03:17:04,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:17:04,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63624 states.