/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/Problem04_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 01:02:33,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 01:02:33,866 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 01:02:33,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 01:02:33,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 01:02:33,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 01:02:33,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 01:02:33,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 01:02:33,899 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 01:02:33,900 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 01:02:33,901 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 01:02:33,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 01:02:33,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 01:02:33,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 01:02:33,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 01:02:33,908 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 01:02:33,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 01:02:33,911 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 01:02:33,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 01:02:33,914 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 01:02:33,916 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 01:02:33,916 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 01:02:33,917 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 01:02:33,918 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 01:02:33,920 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 01:02:33,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 01:02:33,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 01:02:33,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 01:02:33,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 01:02:33,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 01:02:33,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 01:02:33,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 01:02:33,924 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 01:02:33,925 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 01:02:33,926 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 01:02:33,926 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 01:02:33,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 01:02:33,927 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 01:02:33,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 01:02:33,928 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 01:02:33,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 01:02:33,929 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 01:02:33,951 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 01:02:33,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 01:02:33,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 01:02:33,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 01:02:33,953 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 01:02:33,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 01:02:33,953 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 01:02:33,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 01:02:33,954 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 01:02:33,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 01:02:33,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 01:02:33,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 01:02:33,955 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 01:02:33,955 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 01:02:33,955 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 01:02:33,955 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 01:02:33,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 01:02:33,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 01:02:33,956 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 01:02:33,956 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 01:02:33,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 01:02:33,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 01:02:33,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 01:02:33,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 01:02:33,957 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 01:02:33,957 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 01:02:33,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 01:02:33,958 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 01:02:33,958 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 01:02:33,958 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 01:02:34,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 01:02:34,317 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 01:02:34,320 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 01:02:34,322 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 01:02:34,322 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 01:02:34,323 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label22.c [2020-10-14 01:02:34,393 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23e875e3d/c2ed703e23ee4e2db05521e9d0805a33/FLAG598ced5ea [2020-10-14 01:02:35,128 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 01:02:35,129 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label22.c [2020-10-14 01:02:35,162 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23e875e3d/c2ed703e23ee4e2db05521e9d0805a33/FLAG598ced5ea [2020-10-14 01:02:35,220 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23e875e3d/c2ed703e23ee4e2db05521e9d0805a33 [2020-10-14 01:02:35,231 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 01:02:35,234 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 01:02:35,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 01:02:35,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 01:02:35,240 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 01:02:35,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:02:35" (1/1) ... [2020-10-14 01:02:35,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3898459e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:02:35, skipping insertion in model container [2020-10-14 01:02:35,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:02:35" (1/1) ... [2020-10-14 01:02:35,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 01:02:35,423 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 01:02:37,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:02:37,019 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 01:02:37,660 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:02:37,695 INFO L208 MainTranslator]: Completed translation [2020-10-14 01:02:37,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:02:37 WrapperNode [2020-10-14 01:02:37,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 01:02:37,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 01:02:37,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 01:02:37,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 01:02:37,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:02:37" (1/1) ... [2020-10-14 01:02:37,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:02:37" (1/1) ... [2020-10-14 01:02:37,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:02:37" (1/1) ... [2020-10-14 01:02:37,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:02:37" (1/1) ... [2020-10-14 01:02:37,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:02:37" (1/1) ... [2020-10-14 01:02:37,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:02:37" (1/1) ... [2020-10-14 01:02:37,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:02:37" (1/1) ... [2020-10-14 01:02:37,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 01:02:37,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 01:02:37,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 01:02:37,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 01:02:37,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:02:37" (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 01:02:38,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 01:02:38,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 01:02:38,003 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 01:02:38,003 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 01:02:38,003 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 01:02:38,004 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 01:02:38,004 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 01:02:38,005 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 01:02:38,005 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 01:02:38,005 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 01:02:38,005 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 01:02:38,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 01:02:38,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 01:02:38,006 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 01:02:38,006 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 01:02:38,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 01:02:38,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 01:02:42,049 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 01:02:42,050 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 01:02:42,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:02:42 BoogieIcfgContainer [2020-10-14 01:02:42,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 01:02:42,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 01:02:42,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 01:02:42,082 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 01:02:42,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:02:35" (1/3) ... [2020-10-14 01:02:42,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14c24677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:02:42, skipping insertion in model container [2020-10-14 01:02:42,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:02:37" (2/3) ... [2020-10-14 01:02:42,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14c24677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:02:42, skipping insertion in model container [2020-10-14 01:02:42,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:02:42" (3/3) ... [2020-10-14 01:02:42,087 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label22.c [2020-10-14 01:02:42,097 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 01:02:42,109 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 01:02:42,123 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 01:02:42,152 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 01:02:42,153 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 01:02:42,153 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 01:02:42,153 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 01:02:42,153 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 01:02:42,153 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 01:02:42,153 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 01:02:42,154 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 01:02:42,186 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-14 01:02:42,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 826 [2020-10-14 01:02:42,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:02:42,238 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:02:42,238 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:02:42,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:02:42,245 INFO L82 PathProgramCache]: Analyzing trace with hash -356631422, now seen corresponding path program 1 times [2020-10-14 01:02:42,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:02:42,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037631959] [2020-10-14 01:02:42,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:02:42,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:02:43,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:45,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:48,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:02:48,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 839 [2020-10-14 01:02:48,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:02:48,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-14 01:02:48,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:02:48,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:02:48,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 01:02:48,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:02:48,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 833 [2020-10-14 01:02:48,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 01:02:48,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:02:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:02:48,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:48,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:02:48,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:02:48,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:02:48,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 01:02:48,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:02:48,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:02:48,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:02:48,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:02:48,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:02:48,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 01:02:50,950 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 01:02:50,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037631959] [2020-10-14 01:02:50,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:02:50,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 01:02:50,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675702304] [2020-10-14 01:02:50,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 01:02:50,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:02:50,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 01:02:50,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:02:50,981 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 5 states. [2020-10-14 01:02:58,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:02:58,941 INFO L93 Difference]: Finished difference Result 2672 states and 5137 transitions. [2020-10-14 01:02:58,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 01:02:58,943 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 825 [2020-10-14 01:02:58,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:02:58,997 INFO L225 Difference]: With dead ends: 2672 [2020-10-14 01:02:58,997 INFO L226 Difference]: Without dead ends: 1702 [2020-10-14 01:02:59,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 01:02:59,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-10-14 01:02:59,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1689. [2020-10-14 01:02:59,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1689 states. [2020-10-14 01:02:59,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 3005 transitions. [2020-10-14 01:02:59,262 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 3005 transitions. Word has length 825 [2020-10-14 01:02:59,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:02:59,268 INFO L479 AbstractCegarLoop]: Abstraction has 1689 states and 3005 transitions. [2020-10-14 01:02:59,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 01:02:59,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 3005 transitions. [2020-10-14 01:02:59,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 834 [2020-10-14 01:02:59,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:02:59,318 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:02:59,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 01:02:59,319 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:02:59,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:02:59,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1387508461, now seen corresponding path program 1 times [2020-10-14 01:02:59,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:02:59,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498371565] [2020-10-14 01:02:59,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:02:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:02:59,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:00,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:04,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:04,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 849 [2020-10-14 01:03:04,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:03:04,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-14 01:03:04,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:04,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:04,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:03:04,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:03:04,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 01:03:04,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:03:04,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:03:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:04,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:04,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:04,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:03:04,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:04,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 01:03:04,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:04,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:04,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:03:04,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:03:04,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:03:04,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:03:05,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:03:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:05,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:05,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:05,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 01:03:05,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:05,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 01:03:05,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:05,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:05,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:03:05,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:03:05,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 01:03:05,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:03:05,574 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:03:05,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498371565] [2020-10-14 01:03:05,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:03:05,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:03:05,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070598174] [2020-10-14 01:03:05,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:03:05,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:03:05,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:03:05,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:03:05,580 INFO L87 Difference]: Start difference. First operand 1689 states and 3005 transitions. Second operand 7 states. [2020-10-14 01:03:14,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:03:14,527 INFO L93 Difference]: Finished difference Result 5154 states and 9183 transitions. [2020-10-14 01:03:14,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:03:14,527 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 833 [2020-10-14 01:03:14,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:03:14,550 INFO L225 Difference]: With dead ends: 5154 [2020-10-14 01:03:14,550 INFO L226 Difference]: Without dead ends: 3471 [2020-10-14 01:03:14,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 01:03:14,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3471 states. [2020-10-14 01:03:14,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3471 to 3426. [2020-10-14 01:03:14,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3426 states. [2020-10-14 01:03:14,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3426 states to 3426 states and 5146 transitions. [2020-10-14 01:03:14,669 INFO L78 Accepts]: Start accepts. Automaton has 3426 states and 5146 transitions. Word has length 833 [2020-10-14 01:03:14,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:03:14,670 INFO L479 AbstractCegarLoop]: Abstraction has 3426 states and 5146 transitions. [2020-10-14 01:03:14,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:03:14,670 INFO L276 IsEmpty]: Start isEmpty. Operand 3426 states and 5146 transitions. [2020-10-14 01:03:14,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2020-10-14 01:03:14,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:03:14,697 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:03:14,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 01:03:14,698 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:03:14,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:03:14,698 INFO L82 PathProgramCache]: Analyzing trace with hash 400630981, now seen corresponding path program 1 times [2020-10-14 01:03:14,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:03:14,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59084219] [2020-10-14 01:03:14,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:03:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:14,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:15,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:18,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:19,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:19,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 854 [2020-10-14 01:03:19,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:03:19,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5090 [2020-10-14 01:03:19,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:19,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:19,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:03:19,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:03:19,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 01:03:19,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:03:20,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:03:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:20,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:20,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:20,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:03:20,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:20,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 01:03:20,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:20,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:20,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:03:20,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:03:20,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:03:20,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:03:20,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:03:20,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:20,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:20,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:20,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 01:03:20,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:20,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 01:03:20,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:20,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:20,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:03:20,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:03:20,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 01:03:20,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:03:20,463 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:03:20,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59084219] [2020-10-14 01:03:20,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:03:20,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:03:20,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883324998] [2020-10-14 01:03:20,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:03:20,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:03:20,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:03:20,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:03:20,467 INFO L87 Difference]: Start difference. First operand 3426 states and 5146 transitions. Second operand 7 states. [2020-10-14 01:03:29,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:03:29,742 INFO L93 Difference]: Finished difference Result 10416 states and 15947 transitions. [2020-10-14 01:03:29,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:03:29,743 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 838 [2020-10-14 01:03:29,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:03:29,789 INFO L225 Difference]: With dead ends: 10416 [2020-10-14 01:03:29,789 INFO L226 Difference]: Without dead ends: 6996 [2020-10-14 01:03:29,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:03:29,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6996 states. [2020-10-14 01:03:30,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6996 to 6923. [2020-10-14 01:03:30,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6923 states. [2020-10-14 01:03:30,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6923 states to 6923 states and 9552 transitions. [2020-10-14 01:03:30,034 INFO L78 Accepts]: Start accepts. Automaton has 6923 states and 9552 transitions. Word has length 838 [2020-10-14 01:03:30,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:03:30,037 INFO L479 AbstractCegarLoop]: Abstraction has 6923 states and 9552 transitions. [2020-10-14 01:03:30,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:03:30,038 INFO L276 IsEmpty]: Start isEmpty. Operand 6923 states and 9552 transitions. [2020-10-14 01:03:30,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 889 [2020-10-14 01:03:30,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:03:30,067 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:03:30,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 01:03:30,068 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:03:30,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:03:30,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1494377651, now seen corresponding path program 1 times [2020-10-14 01:03:30,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:03:30,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065442689] [2020-10-14 01:03:30,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:03:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:30,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:30,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:30,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:30,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:35,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:35,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 908 [2020-10-14 01:03:35,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 01:03:35,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5094 [2020-10-14 01:03:35,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:35,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:35,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:03:35,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-14 01:03:35,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 01:03:35,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:03:35,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:03:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:35,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:35,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:35,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:03:35,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:35,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:03:35,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:35,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:35,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:03:35,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:03:35,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:03:35,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:03:35,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:03:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:35,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:35,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:35,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 01:03:35,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:35,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 01:03:35,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:35,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:35,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:03:35,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:03:35,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:03:35,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:03:35,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 01:03:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:35,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:35,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:35,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 01:03:35,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:35,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 01:03:35,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:35,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:35,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:03:35,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:03:35,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 01:03:35,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:03:35,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 01:03:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:35,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:35,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:35,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 01:03:35,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:35,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 01:03:35,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:35,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:35,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:03:35,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:03:35,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 01:03:35,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:03:36,179 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 85 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 01:03:36,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065442689] [2020-10-14 01:03:36,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:03:36,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:03:36,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801437179] [2020-10-14 01:03:36,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:03:36,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:03:36,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:03:36,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:03:36,185 INFO L87 Difference]: Start difference. First operand 6923 states and 9552 transitions. Second operand 7 states. [2020-10-14 01:03:45,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:03:45,609 INFO L93 Difference]: Finished difference Result 17584 states and 25424 transitions. [2020-10-14 01:03:45,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:03:45,610 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 888 [2020-10-14 01:03:45,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:03:45,667 INFO L225 Difference]: With dead ends: 17584 [2020-10-14 01:03:45,667 INFO L226 Difference]: Without dead ends: 10667 [2020-10-14 01:03:45,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:03:45,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10667 states. [2020-10-14 01:03:45,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10667 to 10511. [2020-10-14 01:03:45,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10511 states. [2020-10-14 01:03:45,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10511 states to 10511 states and 14151 transitions. [2020-10-14 01:03:45,966 INFO L78 Accepts]: Start accepts. Automaton has 10511 states and 14151 transitions. Word has length 888 [2020-10-14 01:03:45,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:03:45,967 INFO L479 AbstractCegarLoop]: Abstraction has 10511 states and 14151 transitions. [2020-10-14 01:03:45,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:03:45,967 INFO L276 IsEmpty]: Start isEmpty. Operand 10511 states and 14151 transitions. [2020-10-14 01:03:46,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 905 [2020-10-14 01:03:46,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:03:46,008 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:03:46,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 01:03:46,008 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:03:46,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:03:46,009 INFO L82 PathProgramCache]: Analyzing trace with hash -934237750, now seen corresponding path program 1 times [2020-10-14 01:03:46,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:03:46,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187364026] [2020-10-14 01:03:46,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:03:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:46,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:46,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:47,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:49,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:51,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:51,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 922 [2020-10-14 01:03:51,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 01:03:51,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-14 01:03:51,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:51,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:51,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:03:51,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 01:03:51,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 01:03:51,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:03:51,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:03:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:51,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:51,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:51,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:03:51,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:51,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:03:51,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:51,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:51,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:03:51,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:03:51,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:03:51,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:03:51,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:03:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:51,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:51,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:51,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 01:03:51,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:51,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 01:03:51,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:51,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:51,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:03:51,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:03:51,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 01:03:51,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:03:51,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 01:03:51,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:51,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:51,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:51,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 01:03:51,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:51,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 01:03:51,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:51,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:51,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:03:51,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:03:51,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 01:03:51,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:03:51,899 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:03:51,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187364026] [2020-10-14 01:03:51,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:03:51,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:03:51,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506124693] [2020-10-14 01:03:51,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:03:51,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:03:51,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:03:51,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:03:51,902 INFO L87 Difference]: Start difference. First operand 10511 states and 14151 transitions. Second operand 7 states. [2020-10-14 01:04:05,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:04:05,658 INFO L93 Difference]: Finished difference Result 23040 states and 31557 transitions. [2020-10-14 01:04:05,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:04:05,659 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 904 [2020-10-14 01:04:05,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:04:05,712 INFO L225 Difference]: With dead ends: 23040 [2020-10-14 01:04:05,712 INFO L226 Difference]: Without dead ends: 12535 [2020-10-14 01:04:05,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:04:05,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12535 states. [2020-10-14 01:04:05,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12535 to 12434. [2020-10-14 01:04:05,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12434 states. [2020-10-14 01:04:05,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12434 states to 12434 states and 15751 transitions. [2020-10-14 01:04:05,996 INFO L78 Accepts]: Start accepts. Automaton has 12434 states and 15751 transitions. Word has length 904 [2020-10-14 01:04:05,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:04:05,997 INFO L479 AbstractCegarLoop]: Abstraction has 12434 states and 15751 transitions. [2020-10-14 01:04:05,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:04:05,997 INFO L276 IsEmpty]: Start isEmpty. Operand 12434 states and 15751 transitions. [2020-10-14 01:04:06,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 914 [2020-10-14 01:04:06,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:04:06,034 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:04:06,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 01:04:06,035 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:04:06,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:04:06,036 INFO L82 PathProgramCache]: Analyzing trace with hash 55861364, now seen corresponding path program 1 times [2020-10-14 01:04:06,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:04:06,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118679207] [2020-10-14 01:04:06,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:04:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:06,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:06,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:07,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:10,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:11,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:11,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 931 [2020-10-14 01:04:11,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 01:04:11,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-14 01:04:11,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:11,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:11,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:04:11,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 01:04:11,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 01:04:11,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:04:11,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:04:11,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:11,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:11,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:11,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:04:11,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:04:11,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:04:11,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:11,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:11,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:04:11,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:04:11,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:04:11,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:04:11,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:04:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:11,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:11,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:11,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 01:04:11,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:04:11,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 01:04:11,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:11,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:11,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:04:11,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:04:11,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 01:04:11,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:04:11,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 01:04:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:11,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:11,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:11,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 01:04:11,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:04:11,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 01:04:11,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:11,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:11,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:04:11,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:04:11,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 01:04:11,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:04:11,835 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:04:11,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118679207] [2020-10-14 01:04:11,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:04:11,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:04:11,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569779270] [2020-10-14 01:04:11,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:04:11,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:04:11,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:04:11,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:04:11,839 INFO L87 Difference]: Start difference. First operand 12434 states and 15751 transitions. Second operand 7 states. [2020-10-14 01:04:20,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:04:20,898 INFO L93 Difference]: Finished difference Result 35441 states and 46096 transitions. [2020-10-14 01:04:20,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:04:20,899 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 913 [2020-10-14 01:04:20,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:04:20,972 INFO L225 Difference]: With dead ends: 35441 [2020-10-14 01:04:20,973 INFO L226 Difference]: Without dead ends: 23017 [2020-10-14 01:04:20,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:04:21,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23017 states. [2020-10-14 01:04:21,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23017 to 22835. [2020-10-14 01:04:21,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22835 states. [2020-10-14 01:04:21,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22835 states to 22835 states and 27465 transitions. [2020-10-14 01:04:21,452 INFO L78 Accepts]: Start accepts. Automaton has 22835 states and 27465 transitions. Word has length 913 [2020-10-14 01:04:21,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:04:21,452 INFO L479 AbstractCegarLoop]: Abstraction has 22835 states and 27465 transitions. [2020-10-14 01:04:21,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:04:21,453 INFO L276 IsEmpty]: Start isEmpty. Operand 22835 states and 27465 transitions. [2020-10-14 01:04:21,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 951 [2020-10-14 01:04:21,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:04:21,516 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:04:21,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 01:04:21,516 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:04:21,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:04:21,517 INFO L82 PathProgramCache]: Analyzing trace with hash 215643045, now seen corresponding path program 1 times [2020-10-14 01:04:21,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:04:21,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899077234] [2020-10-14 01:04:21,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:04:21,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:21,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:22,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:23,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:26,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:26,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 966 [2020-10-14 01:04:26,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:04:26,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5130 [2020-10-14 01:04:26,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:26,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:26,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:04:26,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:04:26,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-14 01:04:26,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 01:04:27,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:04:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:27,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:27,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:27,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:04:27,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:04:27,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 01:04:27,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:27,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:27,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:04:27,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:04:27,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:04:27,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:04:27,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:04:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:27,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:27,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:27,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 01:04:27,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:04:27,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-14 01:04:27,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:27,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:27,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:04:27,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:04:27,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 01:04:27,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:04:28,466 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:04:28,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899077234] [2020-10-14 01:04:28,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:04:28,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 01:04:28,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629547388] [2020-10-14 01:04:28,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:04:28,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:04:28,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:04:28,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:04:28,469 INFO L87 Difference]: Start difference. First operand 22835 states and 27465 transitions. Second operand 8 states. [2020-10-14 01:04:39,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:04:39,379 INFO L93 Difference]: Finished difference Result 51945 states and 63497 transitions. [2020-10-14 01:04:39,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:04:39,379 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 950 [2020-10-14 01:04:39,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:04:39,443 INFO L225 Difference]: With dead ends: 51945 [2020-10-14 01:04:39,444 INFO L226 Difference]: Without dead ends: 29950 [2020-10-14 01:04:39,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-14 01:04:39,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29950 states. [2020-10-14 01:04:39,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29950 to 29839. [2020-10-14 01:04:39,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29839 states. [2020-10-14 01:04:39,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29839 states to 29839 states and 35955 transitions. [2020-10-14 01:04:39,972 INFO L78 Accepts]: Start accepts. Automaton has 29839 states and 35955 transitions. Word has length 950 [2020-10-14 01:04:39,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:04:39,972 INFO L479 AbstractCegarLoop]: Abstraction has 29839 states and 35955 transitions. [2020-10-14 01:04:39,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 01:04:39,973 INFO L276 IsEmpty]: Start isEmpty. Operand 29839 states and 35955 transitions. [2020-10-14 01:04:40,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 970 [2020-10-14 01:04:40,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:04:40,021 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:04:40,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 01:04:40,022 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:04:40,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:04:40,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1225114870, now seen corresponding path program 1 times [2020-10-14 01:04:40,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:04:40,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030764669] [2020-10-14 01:04:40,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:04:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:40,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:40,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:44,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:45,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:45,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:45,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 987 [2020-10-14 01:04:45,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 01:04:45,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5259 [2020-10-14 01:04:45,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:45,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:45,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 01:04:45,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 01:04:45,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 957 [2020-10-14 01:04:45,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:04:45,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:04:45,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:45,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:45,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:45,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:04:45,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:04:45,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:04:45,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:45,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:45,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:04:45,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:04:45,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:04:45,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:04:45,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:04:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:45,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:45,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:45,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:04:45,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:04:45,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 01:04:45,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:45,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:45,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:04:45,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:04:45,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 01:04:45,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:04:45,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:04:45,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:45,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:46,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:46,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:46,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 01:04:46,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:04:46,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-14 01:04:46,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:46,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:46,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:04:46,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:04:46,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 01:04:46,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:04:46,911 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-14 01:04:46,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030764669] [2020-10-14 01:04:46,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:04:46,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 01:04:46,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874314500] [2020-10-14 01:04:46,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 01:04:46,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:04:46,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 01:04:46,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 01:04:46,914 INFO L87 Difference]: Start difference. First operand 29839 states and 35955 transitions. Second operand 6 states. [2020-10-14 01:04:56,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:04:56,298 INFO L93 Difference]: Finished difference Result 68913 states and 84973 transitions. [2020-10-14 01:04:56,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 01:04:56,298 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 969 [2020-10-14 01:04:56,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:04:56,403 INFO L225 Difference]: With dead ends: 68913 [2020-10-14 01:04:56,403 INFO L226 Difference]: Without dead ends: 42439 [2020-10-14 01:04:56,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:04:56,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42439 states. [2020-10-14 01:04:57,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42439 to 35725. [2020-10-14 01:04:57,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35725 states. [2020-10-14 01:04:57,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35725 states to 35725 states and 44272 transitions. [2020-10-14 01:04:57,069 INFO L78 Accepts]: Start accepts. Automaton has 35725 states and 44272 transitions. Word has length 969 [2020-10-14 01:04:57,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:04:57,071 INFO L479 AbstractCegarLoop]: Abstraction has 35725 states and 44272 transitions. [2020-10-14 01:04:57,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 01:04:57,072 INFO L276 IsEmpty]: Start isEmpty. Operand 35725 states and 44272 transitions. [2020-10-14 01:04:57,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 974 [2020-10-14 01:04:57,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:04:57,145 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:04:57,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 01:04:57,146 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:04:57,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:04:57,146 INFO L82 PathProgramCache]: Analyzing trace with hash 151471936, now seen corresponding path program 1 times [2020-10-14 01:04:57,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:04:57,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185885319] [2020-10-14 01:04:57,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:04:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:57,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:57,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:59,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:02,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:02,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 995 [2020-10-14 01:05:02,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:05:02,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 01:05:02,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:02,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:02,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:05:02,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 01:05:02,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 01:05:02,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:02,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:05:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:02,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:02,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:02,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:05:02,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:02,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:05:02,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:02,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:02,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:05:02,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:05:02,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:05:02,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:02,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:05:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:02,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:02,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:02,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:05:02,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:02,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:05:02,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:02,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:02,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:05:02,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:05:02,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:05:02,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:02,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:05:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:02,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:02,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:02,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 01:05:02,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:02,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:05:02,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:02,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:02,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:05:02,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:05:02,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:05:02,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:02,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 01:05:02,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:02,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:02,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:02,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 01:05:02,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:02,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 01:05:02,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:02,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:02,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:05:02,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:05:02,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 01:05:02,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:02,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 01:05:02,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:02,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:02,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:02,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 01:05:02,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:02,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 01:05:02,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:02,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:02,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:05:02,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:05:02,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 01:05:02,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:03,074 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 223 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-14 01:05:03,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185885319] [2020-10-14 01:05:03,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:05:03,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:05:03,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794915872] [2020-10-14 01:05:03,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:05:03,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:05:03,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:05:03,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:05:03,077 INFO L87 Difference]: Start difference. First operand 35725 states and 44272 transitions. Second operand 7 states. [2020-10-14 01:05:13,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:05:13,518 INFO L93 Difference]: Finished difference Result 80749 states and 105071 transitions. [2020-10-14 01:05:13,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:05:13,519 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 973 [2020-10-14 01:05:13,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:05:13,649 INFO L225 Difference]: With dead ends: 80749 [2020-10-14 01:05:13,650 INFO L226 Difference]: Without dead ends: 48389 [2020-10-14 01:05:13,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:05:13,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48389 states. [2020-10-14 01:05:14,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48389 to 48011. [2020-10-14 01:05:14,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48011 states. [2020-10-14 01:05:14,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48011 states to 48011 states and 61018 transitions. [2020-10-14 01:05:14,476 INFO L78 Accepts]: Start accepts. Automaton has 48011 states and 61018 transitions. Word has length 973 [2020-10-14 01:05:14,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:05:14,477 INFO L479 AbstractCegarLoop]: Abstraction has 48011 states and 61018 transitions. [2020-10-14 01:05:14,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:05:14,477 INFO L276 IsEmpty]: Start isEmpty. Operand 48011 states and 61018 transitions. [2020-10-14 01:05:14,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1085 [2020-10-14 01:05:14,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:05:14,562 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:05:14,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 01:05:14,563 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:05:14,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:05:14,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1353727451, now seen corresponding path program 1 times [2020-10-14 01:05:14,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:05:14,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370250734] [2020-10-14 01:05:14,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:05:14,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:14,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:14,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:15,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:19,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:19,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1108 [2020-10-14 01:05:19,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:05:19,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-14 01:05:19,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:19,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:19,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:05:19,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 01:05:19,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 01:05:19,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:19,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:05:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:19,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:19,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:19,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:05:19,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:19,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:05:19,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:19,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:19,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:05:19,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:05:19,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:05:19,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:19,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:05:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:19,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:19,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:19,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:05:19,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:19,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 01:05:19,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:19,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:19,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:05:19,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:05:19,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:05:19,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:19,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:05:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:19,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:19,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:19,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 01:05:19,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:19,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:05:19,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:19,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:19,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:05:19,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:05:19,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:05:19,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:19,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 01:05:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:19,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:19,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:19,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 01:05:19,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:19,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 01:05:19,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:19,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:19,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:05:19,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:05:19,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 01:05:19,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:19,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 01:05:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:19,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:20,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:20,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 01:05:20,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:20,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 01:05:20,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:20,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:20,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:05:20,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:05:20,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 01:05:20,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:20,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-14 01:05:20,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:20,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:20,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:20,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 01:05:20,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:20,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 01:05:20,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:20,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:20,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:05:20,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-14 01:05:20,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:05:20,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:20,550 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 343 proven. 61 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-10-14 01:05:20,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370250734] [2020-10-14 01:05:20,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:05:20,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:05:20,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497640272] [2020-10-14 01:05:20,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:05:20,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:05:20,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:05:20,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:05:20,553 INFO L87 Difference]: Start difference. First operand 48011 states and 61018 transitions. Second operand 7 states. [2020-10-14 01:05:33,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:05:33,172 INFO L93 Difference]: Finished difference Result 127923 states and 175409 transitions. [2020-10-14 01:05:33,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:05:33,173 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1084 [2020-10-14 01:05:33,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:05:33,444 INFO L225 Difference]: With dead ends: 127923 [2020-10-14 01:05:33,445 INFO L226 Difference]: Without dead ends: 80752 [2020-10-14 01:05:33,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:05:33,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80752 states. [2020-10-14 01:05:36,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80752 to 78446. [2020-10-14 01:05:36,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78446 states. [2020-10-14 01:05:37,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78446 states to 78446 states and 100966 transitions. [2020-10-14 01:05:37,028 INFO L78 Accepts]: Start accepts. Automaton has 78446 states and 100966 transitions. Word has length 1084 [2020-10-14 01:05:37,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:05:37,028 INFO L479 AbstractCegarLoop]: Abstraction has 78446 states and 100966 transitions. [2020-10-14 01:05:37,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:05:37,028 INFO L276 IsEmpty]: Start isEmpty. Operand 78446 states and 100966 transitions. [2020-10-14 01:05:37,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1193 [2020-10-14 01:05:37,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:05:37,113 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:05:37,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 01:05:37,114 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:05:37,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:05:37,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1836820100, now seen corresponding path program 1 times [2020-10-14 01:05:37,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:05:37,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985579650] [2020-10-14 01:05:37,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:05:37,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:37,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:37,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:38,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:40,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:40,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:42,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:42,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1214 [2020-10-14 01:05:42,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 01:05:42,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-14 01:05:42,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:42,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:42,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:05:42,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-14 01:05:42,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 01:05:42,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:42,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:05:42,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:42,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:42,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:42,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:05:42,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:42,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:05:42,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:42,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:42,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:05:42,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:05:42,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:05:42,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:42,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:05:42,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:42,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:42,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:42,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:05:42,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:42,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 01:05:42,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:42,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:42,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:05:42,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:05:42,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:05:42,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:42,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:05:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:42,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:42,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:42,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 01:05:42,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:42,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 01:05:42,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:42,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:42,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:05:42,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:05:42,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 01:05:42,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:42,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-14 01:05:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:42,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:42,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:42,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 01:05:42,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:42,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 01:05:42,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:42,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:42,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:05:42,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:05:42,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 01:05:42,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:42,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 01:05:42,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:42,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:42,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:42,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 01:05:42,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:42,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 01:05:42,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:42,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:42,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:05:42,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-14 01:05:42,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:05:42,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:43,417 INFO L134 CoverageAnalysis]: Checked inductivity of 673 backedges. 449 proven. 67 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-10-14 01:05:43,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985579650] [2020-10-14 01:05:43,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:05:43,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:05:43,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177011258] [2020-10-14 01:05:43,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:05:43,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:05:43,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:05:43,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:05:43,419 INFO L87 Difference]: Start difference. First operand 78446 states and 100966 transitions. Second operand 7 states. [2020-10-14 01:05:53,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:05:53,651 INFO L93 Difference]: Finished difference Result 174026 states and 227939 transitions. [2020-10-14 01:05:53,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:05:53,652 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1192 [2020-10-14 01:05:53,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:05:53,919 INFO L225 Difference]: With dead ends: 174026 [2020-10-14 01:05:53,919 INFO L226 Difference]: Without dead ends: 96420 [2020-10-14 01:05:54,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 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 01:05:54,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96420 states. [2020-10-14 01:05:55,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96420 to 91975. [2020-10-14 01:05:55,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91975 states. [2020-10-14 01:05:55,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91975 states to 91975 states and 112284 transitions. [2020-10-14 01:05:55,476 INFO L78 Accepts]: Start accepts. Automaton has 91975 states and 112284 transitions. Word has length 1192 [2020-10-14 01:05:55,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:05:55,477 INFO L479 AbstractCegarLoop]: Abstraction has 91975 states and 112284 transitions. [2020-10-14 01:05:55,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:05:55,477 INFO L276 IsEmpty]: Start isEmpty. Operand 91975 states and 112284 transitions. [2020-10-14 01:05:55,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1419 [2020-10-14 01:05:55,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:05:55,557 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:05:55,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 01:05:55,558 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:05:55,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:05:55,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1931966931, now seen corresponding path program 1 times [2020-10-14 01:05:55,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:05:55,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490682554] [2020-10-14 01:05:55,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:05:55,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:55,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:55,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:57,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:59,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:06:00,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:06:00,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1444 [2020-10-14 01:06:00,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 01:06:00,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-14 01:06:00,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:06:00,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:06:00,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:06:00,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 383 [2020-10-14 01:06:00,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 01:06:00,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:06:00,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:06:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:06:00,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:06:00,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:06:00,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:06:00,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:06:00,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:06:00,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:06:00,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:06:00,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:06:00,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:06:00,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:06:00,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:06:00,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:06:00,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:06:00,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:06:00,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:06:00,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:06:00,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:06:00,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:06:00,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:06:00,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:06:00,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:06:00,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:06:00,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:06:00,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:06:00,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:06:00,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:06:00,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:06:00,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:06:00,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 01:06:00,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:06:00,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 01:06:00,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:06:00,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:06:00,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:06:00,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:06:00,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:06:00,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:06:01,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 01:06:01,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:06:01,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:06:01,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:06:01,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-14 01:06:01,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:06:01,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-14 01:06:01,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:06:01,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:06:01,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:06:01,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:06:01,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 328 [2020-10-14 01:06:01,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:06:01,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 01:06:01,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:06:01,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:06:01,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:06:01,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 01:06:01,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:06:01,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 01:06:01,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:06:01,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:06:01,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:06:01,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:06:01,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 01:06:01,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:06:01,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2020-10-14 01:06:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:06:01,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:06:01,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:06:01,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 01:06:01,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:06:01,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 01:06:01,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:06:01,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:06:01,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:06:01,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:06:01,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 01:06:01,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:06:01,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2020-10-14 01:06:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:06:01,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:06:01,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:06:01,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 01:06:01,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:06:01,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 01:06:01,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:06:01,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:06:01,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:06:01,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-14 01:06:01,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:06:01,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:06:02,832 INFO L134 CoverageAnalysis]: Checked inductivity of 991 backedges. 692 proven. 67 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2020-10-14 01:06:02,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490682554] [2020-10-14 01:06:02,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:06:02,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 01:06:02,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291741934] [2020-10-14 01:06:02,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:06:02,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:06:02,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:06:02,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:06:02,835 INFO L87 Difference]: Start difference. First operand 91975 states and 112284 transitions. Second operand 8 states.