/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/array-crafted/bor4.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 23:14:35,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 23:14:35,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 23:14:35,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 23:14:35,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 23:14:35,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 23:14:35,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 23:14:35,897 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 23:14:35,899 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 23:14:35,900 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 23:14:35,901 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 23:14:35,902 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 23:14:35,903 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 23:14:35,904 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 23:14:35,906 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 23:14:35,907 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 23:14:35,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 23:14:35,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 23:14:35,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 23:14:35,921 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 23:14:35,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 23:14:35,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 23:14:35,929 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 23:14:35,930 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 23:14:35,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 23:14:35,934 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 23:14:35,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 23:14:35,938 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 23:14:35,939 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 23:14:35,941 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 23:14:35,942 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 23:14:35,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 23:14:35,945 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 23:14:35,946 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 23:14:35,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 23:14:35,948 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 23:14:35,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 23:14:35,949 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 23:14:35,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 23:14:35,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 23:14:35,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 23:14:35,963 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 [2020-10-13 23:14:36,014 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 23:14:36,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 23:14:36,015 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 23:14:36,016 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 23:14:36,016 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 23:14:36,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 23:14:36,016 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 23:14:36,017 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 23:14:36,017 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 23:14:36,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 23:14:36,018 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 23:14:36,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 23:14:36,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 23:14:36,018 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 23:14:36,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 23:14:36,018 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 23:14:36,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 23:14:36,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 23:14:36,019 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 23:14:36,019 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 23:14:36,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 23:14:36,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:14:36,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 23:14:36,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 23:14:36,021 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 23:14:36,022 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 23:14:36,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 23:14:36,022 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 23:14:36,022 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 23:14:36,022 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; [2020-10-13 23:14:36,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 23:14:36,362 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 23:14:36,366 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 23:14:36,368 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 23:14:36,368 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 23:14:36,369 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/bor4.i [2020-10-13 23:14:36,432 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b5fa28a3/e1e33077b47d4a798a041f462ceab190/FLAG3b9fc800d [2020-10-13 23:14:36,908 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 23:14:36,909 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/bor4.i [2020-10-13 23:14:36,915 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b5fa28a3/e1e33077b47d4a798a041f462ceab190/FLAG3b9fc800d [2020-10-13 23:14:37,273 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b5fa28a3/e1e33077b47d4a798a041f462ceab190 [2020-10-13 23:14:37,281 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 23:14:37,284 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 23:14:37,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 23:14:37,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 23:14:37,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 23:14:37,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:14:37" (1/1) ... [2020-10-13 23:14:37,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@236d82c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:37, skipping insertion in model container [2020-10-13 23:14:37,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:14:37" (1/1) ... [2020-10-13 23:14:37,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 23:14:37,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 23:14:37,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:14:37,596 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 23:14:37,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:14:37,660 INFO L208 MainTranslator]: Completed translation [2020-10-13 23:14:37,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:37 WrapperNode [2020-10-13 23:14:37,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 23:14:37,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 23:14:37,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 23:14:37,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 23:14:37,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:37" (1/1) ... [2020-10-13 23:14:37,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:37" (1/1) ... [2020-10-13 23:14:37,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:37" (1/1) ... [2020-10-13 23:14:37,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:37" (1/1) ... [2020-10-13 23:14:37,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:37" (1/1) ... [2020-10-13 23:14:37,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:37" (1/1) ... [2020-10-13 23:14:37,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:37" (1/1) ... [2020-10-13 23:14:37,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 23:14:37,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 23:14:37,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 23:14:37,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 23:14:37,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:37" (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 [2020-10-13 23:14:37,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 23:14:37,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 23:14:37,890 INFO L138 BoogieDeclarations]: Found implementation of procedure bor [2020-10-13 23:14:37,890 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 23:14:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 23:14:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 23:14:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure bor [2020-10-13 23:14:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 23:14:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 23:14:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 23:14:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 23:14:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 23:14:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 23:14:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 23:14:38,145 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 23:14:38,146 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 23:14:38,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:14:38 BoogieIcfgContainer [2020-10-13 23:14:38,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 23:14:38,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 23:14:38,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 23:14:38,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 23:14:38,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:14:37" (1/3) ... [2020-10-13 23:14:38,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@798e107f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:14:38, skipping insertion in model container [2020-10-13 23:14:38,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:37" (2/3) ... [2020-10-13 23:14:38,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@798e107f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:14:38, skipping insertion in model container [2020-10-13 23:14:38,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:14:38" (3/3) ... [2020-10-13 23:14:38,159 INFO L109 eAbstractionObserver]: Analyzing ICFG bor4.i [2020-10-13 23:14:38,185 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 23:14:38,211 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 23:14:38,246 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 23:14:38,298 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 23:14:38,299 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 23:14:38,299 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 23:14:38,299 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 23:14:38,299 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 23:14:38,299 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 23:14:38,299 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 23:14:38,300 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 23:14:38,329 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-13 23:14:38,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 23:14:38,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:14:38,338 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:14:38,338 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:14:38,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:14:38,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1283808693, now seen corresponding path program 1 times [2020-10-13 23:14:38,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:14:38,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289204490] [2020-10-13 23:14:38,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:14:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:38,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:38,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:38,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:38,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:38,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:39,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:39,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 23:14:39,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:14:39,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 958 [2020-10-13 23:14:39,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:39,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:39,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:39,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 23:14:39,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:39,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 23:14:39,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:14:39,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:39,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:39,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:39,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:14:39,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:39,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 23:14:39,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:39,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:39,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:39,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:39,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:39,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:14:39,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 23:14:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:39,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:39,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:39,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:39,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:14:39,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:39,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 23:14:39,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:39,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:39,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:39,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:39,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:39,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:39,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 23:14:39,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:39,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:39,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:39,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:39,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:14:39,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:39,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 23:14:39,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:39,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:39,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:39,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:39,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:39,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 14 [2020-10-13 23:14:39,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:14:39,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:39,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:39,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:39,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:39,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:14:39,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:39,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 23:14:39,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:39,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:39,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:39,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 23:14:39,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:39,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:39,668 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 23:14:39,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289204490] [2020-10-13 23:14:39,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:14:39,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 23:14:39,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206162786] [2020-10-13 23:14:39,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 23:14:39,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:14:39,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 23:14:39,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:14:39,702 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-10-13 23:14:39,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:14:39,828 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2020-10-13 23:14:39,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 23:14:39,831 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-13 23:14:39,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:14:39,840 INFO L225 Difference]: With dead ends: 54 [2020-10-13 23:14:39,841 INFO L226 Difference]: Without dead ends: 26 [2020-10-13 23:14:39,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:14:39,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-13 23:14:39,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-13 23:14:39,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-13 23:14:39,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-13 23:14:39,892 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 32 [2020-10-13 23:14:39,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:14:39,893 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-13 23:14:39,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 23:14:39,893 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-13 23:14:39,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 23:14:39,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:14:39,896 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:14:39,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 23:14:39,896 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:14:39,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:14:39,897 INFO L82 PathProgramCache]: Analyzing trace with hash 721846027, now seen corresponding path program 1 times [2020-10-13 23:14:39,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:14:39,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831845700] [2020-10-13 23:14:39,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:14:39,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:39,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:39,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:39,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:39,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:40,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:40,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:40,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 23:14:40,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:14:40,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 797 [2020-10-13 23:14:40,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:40,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:40,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:14:40,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 23:14:40,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:14:40,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:40,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:14:40,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:40,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:40,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:40,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:14:40,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:40,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:14:40,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:40,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:40,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:40,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:40,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:40,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:40,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 23:14:40,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:40,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:40,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:40,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:40,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:14:40,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:40,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 23:14:40,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:40,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:40,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:40,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:40,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:40,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:40,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 23:14:40,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:40,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:40,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:40,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:14:40,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:40,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 23:14:40,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:40,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:40,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:14:40,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:14:40,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:14:40,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:40,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:14:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:40,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:40,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:40,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:40,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:14:40,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:40,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 23:14:40,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:40,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:40,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:40,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 23:14:40,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:40,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:40,800 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-13 23:14:40,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831845700] [2020-10-13 23:14:40,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:14:40,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-13 23:14:40,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196742100] [2020-10-13 23:14:40,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:14:40,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:14:40,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:14:40,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:14:40,805 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2020-10-13 23:14:40,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:14:40,893 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-10-13 23:14:40,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:14:40,894 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-13 23:14:40,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:14:40,895 INFO L225 Difference]: With dead ends: 45 [2020-10-13 23:14:40,895 INFO L226 Difference]: Without dead ends: 28 [2020-10-13 23:14:40,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:14:40,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-13 23:14:40,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-13 23:14:40,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-13 23:14:40,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-13 23:14:40,905 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 32 [2020-10-13 23:14:40,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:14:40,906 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-13 23:14:40,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:14:40,906 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-13 23:14:40,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 23:14:40,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:14:40,907 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:14:40,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 23:14:40,908 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:14:40,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:14:40,908 INFO L82 PathProgramCache]: Analyzing trace with hash 540504713, now seen corresponding path program 1 times [2020-10-13 23:14:40,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:14:40,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732002188] [2020-10-13 23:14:40,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:14:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:40,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:40,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:40,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:40,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:41,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:43,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:43,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 23:14:43,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:14:43,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2204 [2020-10-13 23:14:43,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:43,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:43,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:14:43,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:14:43,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:14:43,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:43,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:14:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:43,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:43,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:43,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:14:43,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:43,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:14:43,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:43,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:43,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:43,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:43,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:43,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:43,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 23:14:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:43,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:43,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:43,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:43,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:14:43,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:43,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 23:14:43,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:43,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:43,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:43,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 23:14:43,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:43,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:43,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 23:14:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:43,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:43,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:43,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:43,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:14:43,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:43,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 23:14:43,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:43,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:43,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:43,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 23:14:43,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:43,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:43,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 23:14:43,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:43,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:43,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:43,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:43,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:14:43,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:43,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 23:14:43,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:43,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:43,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:43,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 23:14:43,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:43,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:43,242 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-13 23:14:43,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732002188] [2020-10-13 23:14:43,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:14:43,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 23:14:43,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892345620] [2020-10-13 23:14:43,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:14:43,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:14:43,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:14:43,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:14:43,245 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 4 states. [2020-10-13 23:14:43,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:14:43,318 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2020-10-13 23:14:43,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:14:43,319 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-13 23:14:43,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:14:43,320 INFO L225 Difference]: With dead ends: 48 [2020-10-13 23:14:43,320 INFO L226 Difference]: Without dead ends: 29 [2020-10-13 23:14:43,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:14:43,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-13 23:14:43,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-13 23:14:43,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-13 23:14:43,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-13 23:14:43,328 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 38 [2020-10-13 23:14:43,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:14:43,329 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-13 23:14:43,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:14:43,329 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-13 23:14:43,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 23:14:43,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:14:43,331 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:14:43,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 23:14:43,331 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:14:43,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:14:43,332 INFO L82 PathProgramCache]: Analyzing trace with hash 2063023467, now seen corresponding path program 1 times [2020-10-13 23:14:43,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:14:43,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680310187] [2020-10-13 23:14:43,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:14:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:43,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:43,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:43,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:43,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:43,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:46,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:46,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 23:14:46,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:14:46,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3073 [2020-10-13 23:14:46,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:46,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:46,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:14:46,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 23:14:46,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:14:46,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:46,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:14:46,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:46,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:46,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:46,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:14:46,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:46,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:14:46,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:46,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:46,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:46,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:46,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:46,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:46,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 23:14:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:46,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:46,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:46,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:46,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:14:46,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:46,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 23:14:46,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:46,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:46,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:46,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:46,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:46,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:46,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 23:14:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:46,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:46,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:46,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:46,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:14:46,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:46,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 23:14:46,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:46,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:46,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:46,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:46,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:46,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:46,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 23:14:46,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:46,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:46,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:46,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:46,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:14:46,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:46,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 23:14:46,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:46,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:46,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:46,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 23:14:46,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:46,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:46,538 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-13 23:14:46,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680310187] [2020-10-13 23:14:46,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:14:46,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 23:14:46,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881530671] [2020-10-13 23:14:46,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:14:46,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:14:46,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:14:46,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:14:46,541 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-10-13 23:14:46,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:14:46,623 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2020-10-13 23:14:46,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:14:46,624 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-13 23:14:46,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:14:46,626 INFO L225 Difference]: With dead ends: 43 [2020-10-13 23:14:46,626 INFO L226 Difference]: Without dead ends: 30 [2020-10-13 23:14:46,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:14:46,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-13 23:14:46,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-13 23:14:46,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-13 23:14:46,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-13 23:14:46,634 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 40 [2020-10-13 23:14:46,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:14:46,637 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-13 23:14:46,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:14:46,638 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-13 23:14:46,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-13 23:14:46,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:14:46,640 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:14:46,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 23:14:46,640 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:14:46,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:14:46,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1550668567, now seen corresponding path program 1 times [2020-10-13 23:14:46,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:14:46,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603468179] [2020-10-13 23:14:46,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:14:46,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:46,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:46,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:46,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:46,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:47,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:51,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:51,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 23:14:51,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:14:51,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:14:51,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:51,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:51,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:14:51,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:14:51,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 23:14:51,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:51,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:14:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:51,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:51,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:51,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:14:51,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:51,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:14:51,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:51,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:51,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:51,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:51,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:51,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:51,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 23:14:51,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:51,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:51,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:51,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:51,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:14:51,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:51,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 23:14:51,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:51,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:51,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:51,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:51,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:51,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:51,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 23:14:51,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:51,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:51,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:51,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:14:51,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:51,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 23:14:51,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:51,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:51,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:14:51,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:14:51,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 23:14:51,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:51,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 23:14:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:51,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:51,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:51,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:51,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:14:51,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:51,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 23:14:51,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:51,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:51,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:51,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 23:14:51,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:51,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:51,757 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 23:14:51,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603468179] [2020-10-13 23:14:51,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:14:51,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 23:14:51,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186357854] [2020-10-13 23:14:51,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:14:51,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:14:51,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:14:51,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:14:51,760 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-13 23:14:51,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:14:51,859 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2020-10-13 23:14:51,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 23:14:51,859 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-10-13 23:14:51,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:14:51,860 INFO L225 Difference]: With dead ends: 51 [2020-10-13 23:14:51,861 INFO L226 Difference]: Without dead ends: 32 [2020-10-13 23:14:51,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:14:51,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-13 23:14:51,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-13 23:14:51,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 23:14:51,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-13 23:14:51,868 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 42 [2020-10-13 23:14:51,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:14:51,869 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-13 23:14:51,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:14:51,869 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-13 23:14:51,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 23:14:51,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:14:51,870 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:14:51,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 23:14:51,871 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:14:51,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:14:51,871 INFO L82 PathProgramCache]: Analyzing trace with hash 428974311, now seen corresponding path program 2 times [2020-10-13 23:14:51,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:14:51,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696714280] [2020-10-13 23:14:51,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:14:51,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:51,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:51,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:51,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:51,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:52,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:56,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:56,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 23:14:56,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:14:56,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:14:56,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:56,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:56,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:14:56,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 23:14:56,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:14:56,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:56,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:14:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:56,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:56,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:56,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:14:56,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:56,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:14:56,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:56,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:56,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:56,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:56,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:56,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:56,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 23:14:56,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:56,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:56,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:56,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 23:14:56,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:56,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 23:14:56,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:56,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:56,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:14:56,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:14:56,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:14:56,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:56,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 23:14:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:56,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:56,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:56,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:56,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 23:14:56,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:56,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 23:14:56,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:56,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:56,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:56,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:14:56,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:56,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:56,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 23:14:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:57,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:57,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:57,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:57,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 23:14:57,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:57,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 23:14:57,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:57,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:57,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:57,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:14:57,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:57,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:57,026 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-13 23:14:57,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696714280] [2020-10-13 23:14:57,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:14:57,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:14:57,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149218227] [2020-10-13 23:14:57,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:14:57,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:14:57,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:14:57,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:14:57,029 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2020-10-13 23:14:57,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:14:57,154 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2020-10-13 23:14:57,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:14:57,155 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2020-10-13 23:14:57,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:14:57,156 INFO L225 Difference]: With dead ends: 55 [2020-10-13 23:14:57,156 INFO L226 Difference]: Without dead ends: 34 [2020-10-13 23:14:57,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:14:57,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-13 23:14:57,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-13 23:14:57,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-13 23:14:57,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-13 23:14:57,162 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 48 [2020-10-13 23:14:57,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:14:57,163 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-13 23:14:57,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:14:57,163 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-13 23:14:57,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 23:14:57,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:14:57,164 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:14:57,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 23:14:57,165 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:14:57,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:14:57,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1810554469, now seen corresponding path program 3 times [2020-10-13 23:14:57,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:14:57,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63072102] [2020-10-13 23:14:57,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:14:57,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:57,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:57,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:57,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:57,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:57,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:02,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:02,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 23:15:02,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:15:02,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:15:02,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:02,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:02,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:15:02,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:15:02,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 23:15:02,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:02,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:02,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:02,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:02,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:02,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:02,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:02,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:02,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:02,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:02,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:02,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:02,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:02,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:02,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 23:15:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:02,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:02,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:02,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:02,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:02,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:02,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 23:15:02,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:02,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:02,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:02,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:15:02,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:02,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:02,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 23:15:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:02,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:02,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:02,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:02,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:02,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:02,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 23:15:02,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:02,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:02,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:02,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:15:02,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:02,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:02,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 23:15:02,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:02,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:02,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:02,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:02,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:02,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:02,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 23:15:02,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:02,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:02,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:02,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:15:02,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:02,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:02,302 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-13 23:15:02,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63072102] [2020-10-13 23:15:02,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:02,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 23:15:02,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247960513] [2020-10-13 23:15:02,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:15:02,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:02,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:15:02,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:15:02,307 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-10-13 23:15:02,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:02,409 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2020-10-13 23:15:02,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 23:15:02,409 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-10-13 23:15:02,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:02,410 INFO L225 Difference]: With dead ends: 60 [2020-10-13 23:15:02,410 INFO L226 Difference]: Without dead ends: 36 [2020-10-13 23:15:02,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:15:02,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-13 23:15:02,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-13 23:15:02,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-13 23:15:02,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-13 23:15:02,417 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 54 [2020-10-13 23:15:02,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:02,417 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-13 23:15:02,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:15:02,417 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-13 23:15:02,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 23:15:02,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:02,419 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:15:02,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 23:15:02,419 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:02,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:02,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1479760569, now seen corresponding path program 4 times [2020-10-13 23:15:02,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:02,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704733707] [2020-10-13 23:15:02,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:02,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:02,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:02,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:02,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:02,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:03,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:07,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:07,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 23:15:07,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:15:07,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:15:07,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:07,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:07,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:15:07,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:15:07,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:15:07,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:07,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:07,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:07,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:07,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:07,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:07,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:07,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:07,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:07,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:07,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:07,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:07,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:07,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 23:15:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:07,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:07,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:07,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:07,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:07,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:07,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 23:15:07,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:07,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:07,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:07,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:15:07,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:07,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:07,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 23:15:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:07,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:07,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:07,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:07,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:07,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:07,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 23:15:07,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:07,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:07,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:07,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:15:07,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:07,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:07,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 23:15:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:07,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:07,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:07,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:07,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:07,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:07,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 23:15:07,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:07,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:07,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:07,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:15:07,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:07,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:07,540 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-13 23:15:07,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704733707] [2020-10-13 23:15:07,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:07,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:15:07,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781765731] [2020-10-13 23:15:07,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:15:07,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:07,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:15:07,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:15:07,543 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-10-13 23:15:07,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:07,623 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2020-10-13 23:15:07,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:15:07,623 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-13 23:15:07,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:07,624 INFO L225 Difference]: With dead ends: 62 [2020-10-13 23:15:07,624 INFO L226 Difference]: Without dead ends: 38 [2020-10-13 23:15:07,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:15:07,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-13 23:15:07,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-13 23:15:07,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-13 23:15:07,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-13 23:15:07,631 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 56 [2020-10-13 23:15:07,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:07,631 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-13 23:15:07,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:15:07,631 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-13 23:15:07,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 23:15:07,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:07,632 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:15:07,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 23:15:07,633 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:07,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:07,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1918385065, now seen corresponding path program 5 times [2020-10-13 23:15:07,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:07,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091069472] [2020-10-13 23:15:07,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:07,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:07,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:07,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:07,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:09,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:12,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:12,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 23:15:12,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:15:12,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:15:12,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:12,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:12,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:15:12,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 23:15:12,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 23:15:12,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:12,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:12,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:12,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:12,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:12,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:12,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:12,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:12,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:12,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:12,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:12,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:12,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:12,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:12,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 23:15:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:12,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:12,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:12,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:12,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:12,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:12,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 23:15:12,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:12,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:12,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:12,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:12,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:12,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:12,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 23:15:12,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:12,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:12,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:12,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:12,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:12,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:12,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 23:15:12,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:12,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:12,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:12,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:12,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:12,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:12,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 23:15:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:12,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:12,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:12,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:12,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:12,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:12,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 23:15:12,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:12,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:12,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:12,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:15:12,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:12,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:12,746 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-13 23:15:12,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091069472] [2020-10-13 23:15:12,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:12,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 23:15:12,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334362448] [2020-10-13 23:15:12,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:15:12,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:12,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:15:12,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:15:12,753 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 5 states. [2020-10-13 23:15:12,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:12,830 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2020-10-13 23:15:12,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 23:15:12,831 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-10-13 23:15:12,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:12,832 INFO L225 Difference]: With dead ends: 57 [2020-10-13 23:15:12,832 INFO L226 Difference]: Without dead ends: 40 [2020-10-13 23:15:12,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:15:12,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-13 23:15:12,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-13 23:15:12,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-13 23:15:12,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-13 23:15:12,843 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 58 [2020-10-13 23:15:12,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:12,845 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-13 23:15:12,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:15:12,845 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-13 23:15:12,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 23:15:12,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:12,846 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:15:12,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 23:15:12,847 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:12,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:12,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1137374119, now seen corresponding path program 6 times [2020-10-13 23:15:12,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:12,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451579074] [2020-10-13 23:15:12,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:12,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:12,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:12,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:12,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:12,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:15,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:17,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:17,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 23:15:17,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:15:17,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:15:17,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:17,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:17,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:15:17,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:15:17,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 23:15:17,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:17,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:17,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:17,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:17,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:17,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:17,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:17,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:17,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:17,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:17,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:17,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:17,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:17,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 23:15:17,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:17,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:17,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:17,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:17,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:17,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:17,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 23:15:17,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:17,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:17,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:17,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:17,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:17,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:17,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 23:15:17,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:17,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:17,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:17,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:17,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:17,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 23:15:17,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:17,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:17,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:15:17,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:15:17,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 23:15:17,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:17,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 23:15:17,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:17,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:17,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:17,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:17,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:17,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:17,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 23:15:17,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:17,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:17,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:17,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:15:17,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:17,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:17,982 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 28 proven. 37 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-10-13 23:15:17,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451579074] [2020-10-13 23:15:17,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:17,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 23:15:17,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760488502] [2020-10-13 23:15:17,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 23:15:17,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:17,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 23:15:17,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:15:17,984 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 7 states. [2020-10-13 23:15:18,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:18,110 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2020-10-13 23:15:18,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:15:18,111 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2020-10-13 23:15:18,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:18,112 INFO L225 Difference]: With dead ends: 67 [2020-10-13 23:15:18,112 INFO L226 Difference]: Without dead ends: 42 [2020-10-13 23:15:18,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:15:18,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-13 23:15:18,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-13 23:15:18,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 23:15:18,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-13 23:15:18,117 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 60 [2020-10-13 23:15:18,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:18,118 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-13 23:15:18,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 23:15:18,118 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-13 23:15:18,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 23:15:18,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:18,119 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:15:18,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 23:15:18,119 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:18,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:18,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1983725531, now seen corresponding path program 7 times [2020-10-13 23:15:18,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:18,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269698685] [2020-10-13 23:15:18,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:18,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:18,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:18,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:18,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:22,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:23,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:23,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 23:15:23,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:15:23,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:15:23,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:23,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:23,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:15:23,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:15:23,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 23:15:23,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:23,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:23,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:23,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:23,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:23,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:23,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:23,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:23,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:23,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:23,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:23,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:23,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:23,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 23:15:23,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:23,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:23,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:23,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:23,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:23,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:23,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 23:15:23,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:23,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:23,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:23,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:15:23,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:23,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:23,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 23:15:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:23,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:23,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:23,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:23,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:23,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:23,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 23:15:23,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:23,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:23,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:23,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:15:23,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:23,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:23,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 23:15:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:23,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:23,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:23,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:23,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:23,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:23,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 23:15:23,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:23,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:23,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:23,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:15:23,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:23,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:23,270 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-10-13 23:15:23,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269698685] [2020-10-13 23:15:23,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:23,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 23:15:23,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382709911] [2020-10-13 23:15:23,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 23:15:23,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:23,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 23:15:23,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:15:23,273 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 7 states. [2020-10-13 23:15:23,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:23,396 INFO L93 Difference]: Finished difference Result 72 states and 80 transitions. [2020-10-13 23:15:23,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:15:23,397 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2020-10-13 23:15:23,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:23,398 INFO L225 Difference]: With dead ends: 72 [2020-10-13 23:15:23,398 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 23:15:23,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:15:23,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 23:15:23,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-13 23:15:23,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-13 23:15:23,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-13 23:15:23,410 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 66 [2020-10-13 23:15:23,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:23,410 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-13 23:15:23,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 23:15:23,411 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-13 23:15:23,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 23:15:23,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:23,412 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:15:23,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 23:15:23,413 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:23,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:23,414 INFO L82 PathProgramCache]: Analyzing trace with hash -489208825, now seen corresponding path program 8 times [2020-10-13 23:15:23,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:23,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643742800] [2020-10-13 23:15:23,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:23,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:23,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:23,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:23,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:23,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:28,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:28,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:28,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 23:15:28,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:15:28,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:15:28,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:28,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:28,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:15:28,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-13 23:15:28,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:15:28,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:28,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:28,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:28,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:28,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:28,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:28,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:28,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:28,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:28,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:28,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:28,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:28,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:28,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 23:15:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:28,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:28,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:28,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:28,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:28,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:28,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 23:15:28,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:28,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:28,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:28,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:28,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:28,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:28,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 23:15:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:28,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:28,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:28,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:28,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:28,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:28,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 23:15:28,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:28,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:28,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:28,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:28,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:28,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:28,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 23:15:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:28,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:28,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:28,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:28,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:28,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:28,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 23:15:28,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:28,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:28,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:28,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:15:28,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:28,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:28,539 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-13 23:15:28,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643742800] [2020-10-13 23:15:28,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:28,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:15:28,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718059788] [2020-10-13 23:15:28,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:15:28,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:28,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:15:28,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:15:28,541 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 6 states. [2020-10-13 23:15:28,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:28,604 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2020-10-13 23:15:28,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:15:28,604 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-13 23:15:28,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:28,605 INFO L225 Difference]: With dead ends: 65 [2020-10-13 23:15:28,605 INFO L226 Difference]: Without dead ends: 46 [2020-10-13 23:15:28,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:15:28,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-13 23:15:28,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-13 23:15:28,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-13 23:15:28,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-13 23:15:28,612 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 68 [2020-10-13 23:15:28,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:28,612 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-13 23:15:28,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:15:28,613 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-13 23:15:28,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 23:15:28,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:28,613 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:15:28,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 23:15:28,614 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:28,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:28,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1862159493, now seen corresponding path program 9 times [2020-10-13 23:15:28,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:28,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902121206] [2020-10-13 23:15:28,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:28,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:28,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:28,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:28,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:33,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:33,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 23:15:33,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:15:33,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 23:15:33,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:33,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:33,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:15:33,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 23:15:33,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 23:15:33,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:33,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:33,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:33,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:33,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:33,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:33,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:33,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:33,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:33,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:33,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:33,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:33,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:33,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 23:15:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:33,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:33,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:33,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:33,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:33,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 23:15:33,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:33,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:33,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:15:33,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:15:33,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 23:15:33,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:33,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 23:15:33,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:33,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:33,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:33,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:33,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:33,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:33,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 23:15:33,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:33,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:33,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:33,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:15:33,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:33,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:33,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 23:15:33,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:33,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:33,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:33,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:33,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:33,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:33,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 23:15:33,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:33,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:33,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:33,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:15:33,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:33,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:33,749 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-10-13 23:15:33,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902121206] [2020-10-13 23:15:33,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:33,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 23:15:33,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457541854] [2020-10-13 23:15:33,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 23:15:33,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:33,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 23:15:33,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:15:33,751 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 8 states. [2020-10-13 23:15:33,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:33,900 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2020-10-13 23:15:33,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 23:15:33,901 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-13 23:15:33,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:33,902 INFO L225 Difference]: With dead ends: 77 [2020-10-13 23:15:33,902 INFO L226 Difference]: Without dead ends: 48 [2020-10-13 23:15:33,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:15:33,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-13 23:15:33,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-13 23:15:33,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-13 23:15:33,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-13 23:15:33,909 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 70 [2020-10-13 23:15:33,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:33,910 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-13 23:15:33,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 23:15:33,910 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-13 23:15:33,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-13 23:15:33,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:33,911 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:15:33,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 23:15:33,911 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:33,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:33,912 INFO L82 PathProgramCache]: Analyzing trace with hash -282142333, now seen corresponding path program 10 times [2020-10-13 23:15:33,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:33,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207732618] [2020-10-13 23:15:33,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:33,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:33,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:33,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:33,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:33,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:38,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:38,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 23:15:38,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:15:38,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:15:38,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:38,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:38,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:15:38,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 23:15:38,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:15:38,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:38,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:38,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:38,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:38,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:38,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:38,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:38,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:38,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:38,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:38,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:38,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:38,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:38,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:38,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 23:15:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:38,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:38,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:38,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 23:15:38,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:38,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 23:15:38,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:38,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:38,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:15:38,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:15:38,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:15:38,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:38,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 23:15:38,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:38,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:39,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:39,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:39,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 23:15:39,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:39,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 23:15:39,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:39,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:39,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:39,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 23:15:39,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:39,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:39,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 23:15:39,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:39,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:39,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:39,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:39,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 23:15:39,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:39,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 23:15:39,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:39,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:39,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:39,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 23:15:39,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:39,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:39,032 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-10-13 23:15:39,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207732618] [2020-10-13 23:15:39,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:39,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 23:15:39,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117286890] [2020-10-13 23:15:39,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 23:15:39,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:39,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 23:15:39,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:15:39,034 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 9 states. [2020-10-13 23:15:39,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:39,208 INFO L93 Difference]: Finished difference Result 81 states and 91 transitions. [2020-10-13 23:15:39,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 23:15:39,209 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 76 [2020-10-13 23:15:39,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:39,210 INFO L225 Difference]: With dead ends: 81 [2020-10-13 23:15:39,210 INFO L226 Difference]: Without dead ends: 50 [2020-10-13 23:15:39,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:15:39,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-13 23:15:39,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-13 23:15:39,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-13 23:15:39,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-13 23:15:39,218 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 76 [2020-10-13 23:15:39,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:39,219 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-13 23:15:39,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 23:15:39,219 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-13 23:15:39,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 23:15:39,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:39,220 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:15:39,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 23:15:39,220 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:39,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:39,221 INFO L82 PathProgramCache]: Analyzing trace with hash 403271681, now seen corresponding path program 11 times [2020-10-13 23:15:39,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:39,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085233083] [2020-10-13 23:15:39,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:39,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:39,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:39,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:39,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:39,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:44,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:44,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 23:15:44,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:15:44,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:15:44,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:44,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:44,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:15:44,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:15:44,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 23:15:44,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:44,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:44,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:44,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:44,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:44,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:44,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:44,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:44,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:44,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:44,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:44,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:44,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:44,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:44,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 23:15:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:44,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:44,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:44,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:44,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:15:44,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:44,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 23:15:44,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:44,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:44,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:44,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:15:44,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:44,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:44,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 23:15:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:44,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:44,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:44,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:44,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:15:44,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:44,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 23:15:44,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:44,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:44,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:44,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:15:44,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:44,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:44,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 23:15:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:44,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:44,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:44,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:44,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:15:44,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:44,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 23:15:44,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:44,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:44,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:44,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:15:44,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:44,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:44,348 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2020-10-13 23:15:44,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085233083] [2020-10-13 23:15:44,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:44,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 23:15:44,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464363163] [2020-10-13 23:15:44,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 23:15:44,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:44,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 23:15:44,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:15:44,350 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 8 states. [2020-10-13 23:15:44,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:44,440 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2020-10-13 23:15:44,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 23:15:44,440 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 82 [2020-10-13 23:15:44,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:44,441 INFO L225 Difference]: With dead ends: 86 [2020-10-13 23:15:44,441 INFO L226 Difference]: Without dead ends: 52 [2020-10-13 23:15:44,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:15:44,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-13 23:15:44,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-13 23:15:44,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-13 23:15:44,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-13 23:15:44,448 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 82 [2020-10-13 23:15:44,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:44,449 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-13 23:15:44,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 23:15:44,449 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-13 23:15:44,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-13 23:15:44,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:44,450 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:15:44,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 23:15:44,450 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:44,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:44,451 INFO L82 PathProgramCache]: Analyzing trace with hash -340922397, now seen corresponding path program 12 times [2020-10-13 23:15:44,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:44,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771053741] [2020-10-13 23:15:44,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:44,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:44,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:44,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:44,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:44,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:49,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:49,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 23:15:49,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:15:49,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:15:49,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:49,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:49,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:15:49,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:15:49,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:15:49,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:49,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:49,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:49,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:49,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:49,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:49,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:49,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:49,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:49,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:49,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:49,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:49,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:49,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:49,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 23:15:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:49,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:49,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:49,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:49,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:15:49,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:49,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 23:15:49,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:49,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:49,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:49,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:15:49,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:49,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:49,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 23:15:49,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:49,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:49,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:49,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:49,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:15:49,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:49,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 23:15:49,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:49,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:49,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:49,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:15:49,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:49,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:49,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 23:15:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:49,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:49,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:49,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:49,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:15:49,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:49,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 23:15:49,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:49,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:49,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:49,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:15:49,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:49,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:49,604 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2020-10-13 23:15:49,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771053741] [2020-10-13 23:15:49,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:49,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 23:15:49,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76452130] [2020-10-13 23:15:49,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 23:15:49,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:49,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 23:15:49,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:15:49,607 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 9 states. [2020-10-13 23:15:49,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:49,736 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2020-10-13 23:15:49,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 23:15:49,737 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-10-13 23:15:49,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:49,737 INFO L225 Difference]: With dead ends: 88 [2020-10-13 23:15:49,738 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 23:15:49,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:15:49,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 23:15:49,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-13 23:15:49,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-13 23:15:49,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-13 23:15:49,747 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 84 [2020-10-13 23:15:49,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:49,747 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-13 23:15:49,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 23:15:49,747 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-13 23:15:49,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 23:15:49,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:49,749 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:15:49,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 23:15:49,749 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:49,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:49,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1748107077, now seen corresponding path program 13 times [2020-10-13 23:15:49,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:49,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574020205] [2020-10-13 23:15:49,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:49,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:49,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:49,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:49,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:49,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:54,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:54,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 23:15:54,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:15:54,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 23:15:54,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:54,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:54,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:15:54,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-13 23:15:54,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 23:15:54,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:54,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:54,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:54,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:54,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:54,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:54,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:54,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:54,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:54,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:54,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:54,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:54,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:54,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 23:15:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:54,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:54,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:54,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:54,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:15:54,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:54,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 23:15:54,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:54,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:54,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:54,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:54,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:54,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:54,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 23:15:54,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:54,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:54,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:54,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:54,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:15:54,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:54,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 23:15:54,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:54,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:54,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:54,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:54,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:54,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:54,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 23:15:54,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:54,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:54,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:54,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:54,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:15:54,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:54,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 23:15:54,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:54,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:54,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:54,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:15:54,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:54,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:54,912 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2020-10-13 23:15:54,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1574020205] [2020-10-13 23:15:54,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:54,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 23:15:54,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714598825] [2020-10-13 23:15:54,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 23:15:54,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:54,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 23:15:54,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:15:54,915 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 7 states. [2020-10-13 23:15:55,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:55,034 INFO L93 Difference]: Finished difference Result 79 states and 84 transitions. [2020-10-13 23:15:55,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:15:55,035 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 86 [2020-10-13 23:15:55,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:55,036 INFO L225 Difference]: With dead ends: 79 [2020-10-13 23:15:55,038 INFO L226 Difference]: Without dead ends: 56 [2020-10-13 23:15:55,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:15:55,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-13 23:15:55,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-13 23:15:55,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-13 23:15:55,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-13 23:15:55,051 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 86 [2020-10-13 23:15:55,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:55,056 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-13 23:15:55,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 23:15:55,056 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-13 23:15:55,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 23:15:55,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:55,061 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:15:55,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 23:15:55,061 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:55,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:55,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1875710019, now seen corresponding path program 14 times [2020-10-13 23:15:55,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:55,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051467122] [2020-10-13 23:15:55,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:55,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:55,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:55,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:55,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:00,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:00,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 23:16:00,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:00,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:16:00,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:00,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:00,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:16:00,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 23:16:00,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:16:00,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:00,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:00,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:00,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:00,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:00,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:00,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:00,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:16:00,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:00,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:00,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:00,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:00,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:00,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:00,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 23:16:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:00,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:00,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:00,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:16:00,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:00,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 23:16:00,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:00,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:00,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:16:00,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:16:00,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:16:00,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:00,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 23:16:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:00,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:00,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:00,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:00,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:16:00,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:00,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 23:16:00,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:00,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:00,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:00,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:16:00,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:00,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:16:00,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 23:16:00,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:00,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:00,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:00,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:00,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:16:00,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:00,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 23:16:00,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:00,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:00,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:00,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:16:00,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:00,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:16:00,323 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2020-10-13 23:16:00,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051467122] [2020-10-13 23:16:00,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:00,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:16:00,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597329996] [2020-10-13 23:16:00,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:16:00,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:00,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:16:00,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:16:00,331 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 10 states. [2020-10-13 23:16:00,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:00,579 INFO L93 Difference]: Finished difference Result 93 states and 103 transitions. [2020-10-13 23:16:00,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 23:16:00,580 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-10-13 23:16:00,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:00,581 INFO L225 Difference]: With dead ends: 93 [2020-10-13 23:16:00,581 INFO L226 Difference]: Without dead ends: 58 [2020-10-13 23:16:00,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:16:00,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-13 23:16:00,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-13 23:16:00,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-13 23:16:00,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-13 23:16:00,593 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 88 [2020-10-13 23:16:00,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:00,593 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-13 23:16:00,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:16:00,593 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-13 23:16:00,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 23:16:00,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:00,595 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:16:00,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 23:16:00,595 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:00,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:00,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1216492993, now seen corresponding path program 15 times [2020-10-13 23:16:00,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:00,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994540252] [2020-10-13 23:16:00,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:00,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:00,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:00,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:00,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:00,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:05,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:05,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 23:16:05,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:05,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:16:05,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:05,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:05,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:16:05,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:16:05,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:16:05,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:05,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:05,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:05,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:05,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:05,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:05,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:05,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:05,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:05,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:05,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:05,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:05,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 23:16:05,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 23:16:05,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:05,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:05,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:05,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:05,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:05,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:05,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 23:16:05,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:05,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:05,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:05,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:16:05,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:05,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:16:05,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 23:16:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:05,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:05,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:05,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:05,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:05,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:05,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 23:16:05,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:05,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:05,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:05,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:16:05,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:05,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:16:05,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 23:16:05,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:05,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:05,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:05,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:05,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:05,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:05,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 23:16:05,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:05,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:05,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:05,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:16:05,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:05,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 23:16:05,840 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2020-10-13 23:16:05,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994540252] [2020-10-13 23:16:05,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:05,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:16:05,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183866782] [2020-10-13 23:16:05,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:16:05,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:05,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:16:05,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:16:05,849 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 10 states. [2020-10-13 23:16:05,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:05,969 INFO L93 Difference]: Finished difference Result 98 states and 106 transitions. [2020-10-13 23:16:05,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 23:16:05,970 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-10-13 23:16:05,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:05,971 INFO L225 Difference]: With dead ends: 98 [2020-10-13 23:16:05,971 INFO L226 Difference]: Without dead ends: 60 [2020-10-13 23:16:05,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:16:05,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-13 23:16:05,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-13 23:16:05,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-13 23:16:05,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-13 23:16:05,979 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 94 [2020-10-13 23:16:05,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:05,979 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-13 23:16:05,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:16:05,979 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-13 23:16:05,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 23:16:05,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:05,981 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:16:05,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 23:16:05,981 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:05,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:05,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1443623587, now seen corresponding path program 16 times [2020-10-13 23:16:05,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:05,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831248795] [2020-10-13 23:16:05,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:06,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:06,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:06,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:06,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:11,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:11,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 23:16:11,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:11,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 23:16:11,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:11,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:11,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:16:11,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-13 23:16:11,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 23:16:11,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:11,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:11,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:11,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:11,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:11,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:11,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:11,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:11,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:11,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:11,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:11,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:11,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:11,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:11,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 23:16:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:11,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:11,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:11,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:11,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:11,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:11,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 23:16:11,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:11,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:11,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:11,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:11,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:11,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:11,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 23:16:11,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:11,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:11,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:11,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:11,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:11,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:11,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 23:16:11,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:11,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:11,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:11,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:11,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:11,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:11,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 23:16:11,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:11,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:11,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:11,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:11,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:11,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:11,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 23:16:11,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:11,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:11,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:11,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:16:11,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:11,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:11,138 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2020-10-13 23:16:11,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831248795] [2020-10-13 23:16:11,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:11,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 23:16:11,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114499660] [2020-10-13 23:16:11,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 23:16:11,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:11,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 23:16:11,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:16:11,140 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 8 states. [2020-10-13 23:16:11,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:11,236 INFO L93 Difference]: Finished difference Result 87 states and 92 transitions. [2020-10-13 23:16:11,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 23:16:11,236 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 96 [2020-10-13 23:16:11,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:11,237 INFO L225 Difference]: With dead ends: 87 [2020-10-13 23:16:11,237 INFO L226 Difference]: Without dead ends: 62 [2020-10-13 23:16:11,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:16:11,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-13 23:16:11,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-13 23:16:11,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-13 23:16:11,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-13 23:16:11,245 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 96 [2020-10-13 23:16:11,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:11,245 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-13 23:16:11,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 23:16:11,245 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-13 23:16:11,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 23:16:11,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:11,247 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:16:11,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 23:16:11,247 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:11,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:11,247 INFO L82 PathProgramCache]: Analyzing trace with hash -170355679, now seen corresponding path program 17 times [2020-10-13 23:16:11,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:11,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41990489] [2020-10-13 23:16:11,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:11,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:11,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:11,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:11,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:11,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:16,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:16,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 23:16:16,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:16,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:16:16,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:16,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:16,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:16:16,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:16:16,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 23:16:16,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:16,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:16,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:16,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:16,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:16,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:16,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:16:16,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:16,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:16,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:16,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:16,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:16,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:16,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 23:16:16,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:16,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:16,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:16,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:16,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:16,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:16,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 23:16:16,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:16,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:16,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:16,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:16:16,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:16,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:16,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 23:16:16,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:16,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:16,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:16,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:16,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:16,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:16,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 23:16:16,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:16,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:16,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:16,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:16:16,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:16,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:16,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 23:16:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:16,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:16,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:16,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:16,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:16,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:16,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 23:16:16,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:16,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:16,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:16,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:16:16,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:16,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:16,432 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 523 trivial. 0 not checked. [2020-10-13 23:16:16,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41990489] [2020-10-13 23:16:16,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:16,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:16:16,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234683413] [2020-10-13 23:16:16,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:16:16,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:16,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:16:16,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:16:16,434 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 11 states. [2020-10-13 23:16:16,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:16,517 INFO L93 Difference]: Finished difference Result 104 states and 112 transitions. [2020-10-13 23:16:16,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:16:16,518 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-10-13 23:16:16,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:16,518 INFO L225 Difference]: With dead ends: 104 [2020-10-13 23:16:16,519 INFO L226 Difference]: Without dead ends: 64 [2020-10-13 23:16:16,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:16:16,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-13 23:16:16,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-13 23:16:16,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-13 23:16:16,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-13 23:16:16,525 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 98 [2020-10-13 23:16:16,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:16,525 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-13 23:16:16,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:16:16,525 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-13 23:16:16,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 23:16:16,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:16,526 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 8, 8, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:16:16,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 23:16:16,527 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:16,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:16,527 INFO L82 PathProgramCache]: Analyzing trace with hash 2090143747, now seen corresponding path program 18 times [2020-10-13 23:16:16,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:16,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220123372] [2020-10-13 23:16:16,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:16,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:16,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:16,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:16,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:21,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:21,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 23:16:21,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:21,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 23:16:21,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:21,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:21,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:16:21,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 23:16:21,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 23:16:21,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:21,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:21,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:21,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:21,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:21,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:21,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:21,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:21,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:21,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:21,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:21,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:21,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:21,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:21,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:16:21,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:21,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:21,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:21,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:21,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:21,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:21,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 23:16:21,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:21,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:21,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:21,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:21,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:21,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:21,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 23:16:21,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:21,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:21,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:21,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:21,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:21,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 23:16:21,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:21,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:21,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:16:21,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:16:21,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 23:16:21,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:21,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 23:16:21,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:21,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:21,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:21,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:21,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:21,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:21,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 23:16:21,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:21,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:21,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:21,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:16:21,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:21,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:21,697 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 116 proven. 165 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2020-10-13 23:16:21,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220123372] [2020-10-13 23:16:21,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:21,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:16:21,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251527228] [2020-10-13 23:16:21,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:16:21,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:21,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:16:21,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:16:21,699 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 11 states. [2020-10-13 23:16:21,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:21,912 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2020-10-13 23:16:21,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:16:21,913 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 100 [2020-10-13 23:16:21,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:21,915 INFO L225 Difference]: With dead ends: 105 [2020-10-13 23:16:21,915 INFO L226 Difference]: Without dead ends: 66 [2020-10-13 23:16:21,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:16:21,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-13 23:16:21,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-13 23:16:21,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-13 23:16:21,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-13 23:16:21,920 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 100 [2020-10-13 23:16:21,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:21,921 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-13 23:16:21,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:16:21,921 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-13 23:16:21,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 23:16:21,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:21,922 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:16:21,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 23:16:21,922 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:21,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:21,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1822803073, now seen corresponding path program 19 times [2020-10-13 23:16:21,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:21,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368374411] [2020-10-13 23:16:21,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:21,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:21,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:21,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:21,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:22,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:26,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:26,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 23:16:26,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:26,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:16:26,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:26,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:26,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:16:26,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 23:16:26,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:16:26,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:26,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:26,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:26,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:26,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:26,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:26,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:26,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:26,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:26,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:26,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:26,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:26,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:26,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:16:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:26,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:26,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:27,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:27,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:27,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:27,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 23:16:27,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:27,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:27,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:27,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:27,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:27,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:27,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 23:16:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:27,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:27,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:27,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:27,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:27,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:27,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 23:16:27,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:27,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:27,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:27,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:27,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:27,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:27,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 23:16:27,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:27,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:27,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:27,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:27,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:27,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:27,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 23:16:27,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:27,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:27,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:27,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:16:27,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:27,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:27,076 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-13 23:16:27,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368374411] [2020-10-13 23:16:27,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:27,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 23:16:27,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57629328] [2020-10-13 23:16:27,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 23:16:27,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:27,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 23:16:27,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:16:27,078 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 9 states. [2020-10-13 23:16:27,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:27,173 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2020-10-13 23:16:27,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 23:16:27,173 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2020-10-13 23:16:27,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:27,174 INFO L225 Difference]: With dead ends: 95 [2020-10-13 23:16:27,174 INFO L226 Difference]: Without dead ends: 68 [2020-10-13 23:16:27,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:16:27,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-13 23:16:27,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-13 23:16:27,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-13 23:16:27,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-13 23:16:27,180 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 106 [2020-10-13 23:16:27,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:27,180 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-13 23:16:27,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 23:16:27,181 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-13 23:16:27,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 23:16:27,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:27,182 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:16:27,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 23:16:27,182 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:27,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:27,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1068127871, now seen corresponding path program 20 times [2020-10-13 23:16:27,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:27,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [156129907] [2020-10-13 23:16:27,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:27,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:27,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:27,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:27,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:27,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:32,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:32,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 23:16:32,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:32,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 23:16:32,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:32,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:32,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:16:32,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 23:16:32,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 23:16:32,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:32,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:32,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:32,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:32,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:32,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:32,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:32,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:32,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:32,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:32,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:32,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:32,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:16:32,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:16:32,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:32,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:32,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:32,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:32,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:32,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 23:16:32,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:32,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:32,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:16:32,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:16:32,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 23:16:32,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:32,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 23:16:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:32,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:32,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:32,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:32,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:32,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:32,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 23:16:32,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:32,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:32,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:32,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:16:32,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:32,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:32,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 23:16:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:32,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:32,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:32,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:32,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:32,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:32,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 23:16:32,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:32,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:32,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:32,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:16:32,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:32,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:32,384 INFO L134 CoverageAnalysis]: Checked inductivity of 739 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2020-10-13 23:16:32,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [156129907] [2020-10-13 23:16:32,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:32,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:16:32,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599349169] [2020-10-13 23:16:32,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:16:32,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:32,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:16:32,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:16:32,386 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 12 states. [2020-10-13 23:16:32,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:32,619 INFO L93 Difference]: Finished difference Result 113 states and 123 transitions. [2020-10-13 23:16:32,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:16:32,619 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-10-13 23:16:32,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:32,620 INFO L225 Difference]: With dead ends: 113 [2020-10-13 23:16:32,620 INFO L226 Difference]: Without dead ends: 70 [2020-10-13 23:16:32,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:16:32,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-13 23:16:32,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-13 23:16:32,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-13 23:16:32,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-13 23:16:32,626 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 108 [2020-10-13 23:16:32,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:32,626 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-13 23:16:32,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:16:32,626 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-13 23:16:32,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 23:16:32,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:32,627 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 8, 8, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:16:32,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 23:16:32,628 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:32,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:32,628 INFO L82 PathProgramCache]: Analyzing trace with hash 755588349, now seen corresponding path program 21 times [2020-10-13 23:16:32,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:32,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [120872232] [2020-10-13 23:16:32,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:32,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:32,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:32,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:32,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:37,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:37,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 23:16:37,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:37,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:16:37,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:37,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:37,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:16:37,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 23:16:37,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:16:37,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:37,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:37,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:37,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:37,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:37,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:37,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:37,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:37,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:37,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:37,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:37,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:37,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:37,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:37,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:16:37,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:37,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:37,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:37,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 23:16:37,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:37,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 23:16:37,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:37,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:37,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:16:37,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:16:37,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:16:37,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:37,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 23:16:37,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:37,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:37,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:37,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:37,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 23:16:37,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:37,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 23:16:37,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:37,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:37,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:37,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 23:16:37,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:37,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:37,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 23:16:37,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:37,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:37,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:37,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:37,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 23:16:37,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:37,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 23:16:37,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:37,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:37,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:37,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 23:16:37,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:37,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:37,835 INFO L134 CoverageAnalysis]: Checked inductivity of 898 backedges. 0 proven. 449 refuted. 0 times theorem prover too weak. 449 trivial. 0 not checked. [2020-10-13 23:16:37,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [120872232] [2020-10-13 23:16:37,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:37,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:16:37,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397037862] [2020-10-13 23:16:37,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:16:37,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:37,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:16:37,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:16:37,837 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 13 states. [2020-10-13 23:16:38,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:38,071 INFO L93 Difference]: Finished difference Result 117 states and 127 transitions. [2020-10-13 23:16:38,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:16:38,072 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 114 [2020-10-13 23:16:38,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:38,073 INFO L225 Difference]: With dead ends: 117 [2020-10-13 23:16:38,073 INFO L226 Difference]: Without dead ends: 72 [2020-10-13 23:16:38,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-13 23:16:38,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-13 23:16:38,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-13 23:16:38,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-13 23:16:38,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-13 23:16:38,079 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 114 [2020-10-13 23:16:38,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:38,079 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-13 23:16:38,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:16:38,080 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-13 23:16:38,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 23:16:38,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:38,081 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 8, 8, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:16:38,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 23:16:38,081 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:38,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:38,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1078414587, now seen corresponding path program 22 times [2020-10-13 23:16:38,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:38,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883998961] [2020-10-13 23:16:38,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:38,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:38,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:38,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:38,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:43,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:43,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 23:16:43,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:43,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 23:16:43,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:43,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:43,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:16:43,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:16:43,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 23:16:43,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:43,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:43,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:43,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:43,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:43,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:43,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:43,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:43,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:43,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:43,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:43,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:43,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:43,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:43,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:16:43,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:43,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:43,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:43,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:43,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:16:43,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:43,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 23:16:43,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:43,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:43,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:43,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:16:43,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:43,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:43,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 23:16:43,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:43,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:43,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:43,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:43,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:16:43,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:43,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 23:16:43,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:43,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:43,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:43,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:16:43,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:43,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:43,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 23:16:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:43,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:43,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:43,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:43,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:16:43,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:43,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 23:16:43,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:43,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:43,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:43,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:16:43,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:43,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:43,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2020-10-13 23:16:43,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883998961] [2020-10-13 23:16:43,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:43,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:16:43,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036397835] [2020-10-13 23:16:43,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:16:43,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:43,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:16:43,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:16:43,285 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 12 states. [2020-10-13 23:16:43,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:43,404 INFO L93 Difference]: Finished difference Result 122 states and 130 transitions. [2020-10-13 23:16:43,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:16:43,405 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 120 [2020-10-13 23:16:43,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:43,406 INFO L225 Difference]: With dead ends: 122 [2020-10-13 23:16:43,406 INFO L226 Difference]: Without dead ends: 74 [2020-10-13 23:16:43,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:16:43,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-13 23:16:43,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-13 23:16:43,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-13 23:16:43,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-13 23:16:43,414 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 120 [2020-10-13 23:16:43,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:43,414 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-13 23:16:43,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:16:43,414 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-13 23:16:43,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 23:16:43,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:43,415 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 9, 9, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:16:43,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 23:16:43,415 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:43,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:43,416 INFO L82 PathProgramCache]: Analyzing trace with hash 644797277, now seen corresponding path program 23 times [2020-10-13 23:16:43,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:43,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639598362] [2020-10-13 23:16:43,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:43,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:43,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:43,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:43,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:43,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:48,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:48,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 23:16:48,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:48,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:16:48,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:48,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:48,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:16:48,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:16:48,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:16:48,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:48,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:48,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:48,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:48,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:48,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:48,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:48,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:16:48,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:48,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:48,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:48,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:48,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:48,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:48,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 23:16:48,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:48,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:48,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:48,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:48,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:16:48,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:48,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 23:16:48,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:48,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:48,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:48,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:16:48,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:48,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:48,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 23:16:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:48,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:48,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:48,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:48,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:16:48,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:48,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 23:16:48,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:48,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:48,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:48,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:16:48,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:48,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:48,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 23:16:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:48,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:48,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:48,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:48,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:16:48,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:48,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 23:16:48,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:48,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:48,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:48,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:16:48,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:48,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:48,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2020-10-13 23:16:48,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639598362] [2020-10-13 23:16:48,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:48,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:16:48,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243758380] [2020-10-13 23:16:48,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:16:48,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:48,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:16:48,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:16:48,634 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 13 states. [2020-10-13 23:16:48,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:48,745 INFO L93 Difference]: Finished difference Result 124 states and 132 transitions. [2020-10-13 23:16:48,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:16:48,745 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 122 [2020-10-13 23:16:48,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:48,746 INFO L225 Difference]: With dead ends: 124 [2020-10-13 23:16:48,746 INFO L226 Difference]: Without dead ends: 76 [2020-10-13 23:16:48,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:16:48,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-13 23:16:48,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-13 23:16:48,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 23:16:48,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-13 23:16:48,752 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 122 [2020-10-13 23:16:48,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:48,753 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-13 23:16:48,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:16:48,753 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-13 23:16:48,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 23:16:48,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:48,754 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:16:48,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 23:16:48,755 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:48,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:48,755 INFO L82 PathProgramCache]: Analyzing trace with hash 550390079, now seen corresponding path program 24 times [2020-10-13 23:16:48,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:48,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962120654] [2020-10-13 23:16:48,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:48,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:48,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:48,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:48,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:53,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:53,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 23:16:53,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:53,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:16:53,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:53,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:53,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:16:53,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 23:16:53,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:16:53,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:53,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:53,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:53,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:53,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:53,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:53,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:53,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:53,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:53,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:53,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:53,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:53,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:53,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:53,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 23:16:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:53,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:53,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:53,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:53,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:16:53,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:53,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 23:16:53,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:53,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:53,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:53,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:53,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:53,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:53,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 23:16:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:53,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:53,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:53,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:53,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:16:53,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:53,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 23:16:53,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:53,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:53,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:53,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:53,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:53,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:53,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 23:16:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:53,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:53,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:53,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:53,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:16:53,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:53,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 23:16:53,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:53,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:53,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:53,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:16:53,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:53,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:53,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-13 23:16:53,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962120654] [2020-10-13 23:16:53,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:53,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:16:53,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460489714] [2020-10-13 23:16:53,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:16:53,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:53,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:16:53,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:16:53,942 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 10 states. [2020-10-13 23:16:54,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:54,053 INFO L93 Difference]: Finished difference Result 109 states and 114 transitions. [2020-10-13 23:16:54,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 23:16:54,054 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 124 [2020-10-13 23:16:54,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:54,055 INFO L225 Difference]: With dead ends: 109 [2020-10-13 23:16:54,055 INFO L226 Difference]: Without dead ends: 78 [2020-10-13 23:16:54,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:16:54,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-13 23:16:54,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-13 23:16:54,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-13 23:16:54,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-13 23:16:54,062 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 124 [2020-10-13 23:16:54,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:54,063 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-13 23:16:54,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:16:54,063 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-13 23:16:54,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-13 23:16:54,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:54,068 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:16:54,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 23:16:54,068 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:54,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:54,068 INFO L82 PathProgramCache]: Analyzing trace with hash -820345923, now seen corresponding path program 25 times [2020-10-13 23:16:54,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:54,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504379254] [2020-10-13 23:16:54,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:54,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:54,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:54,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:54,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:59,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:59,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 23:16:59,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:59,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 23:16:59,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:59,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:59,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:16:59,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 23:16:59,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 23:16:59,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:59,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:59,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:59,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:59,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:59,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:59,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:59,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:59,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:59,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:59,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:59,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:59,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:59,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 23:16:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:59,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:59,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:59,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:16:59,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:59,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 23:16:59,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:59,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:59,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:16:59,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:16:59,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 23:16:59,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:59,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 23:16:59,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:59,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:59,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:59,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:59,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:16:59,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:59,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 23:16:59,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:59,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:59,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:59,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:16:59,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:59,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:59,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 23:16:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:59,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:59,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:59,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:59,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:16:59,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:59,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 23:16:59,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:59,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:59,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:59,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:16:59,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:59,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:59,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 0 proven. 548 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2020-10-13 23:16:59,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504379254] [2020-10-13 23:16:59,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:59,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:16:59,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018341719] [2020-10-13 23:16:59,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:16:59,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:59,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:16:59,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:16:59,324 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 14 states. [2020-10-13 23:16:59,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:59,606 INFO L93 Difference]: Finished difference Result 129 states and 139 transitions. [2020-10-13 23:16:59,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:16:59,606 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 126 [2020-10-13 23:16:59,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:59,607 INFO L225 Difference]: With dead ends: 129 [2020-10-13 23:16:59,607 INFO L226 Difference]: Without dead ends: 80 [2020-10-13 23:16:59,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-13 23:16:59,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-13 23:16:59,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-13 23:16:59,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-13 23:16:59,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-13 23:16:59,613 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 126 [2020-10-13 23:16:59,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:59,613 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-13 23:16:59,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:16:59,613 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-13 23:16:59,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 23:16:59,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:59,615 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 10, 10, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:16:59,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 23:16:59,615 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:59,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:59,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1479656123, now seen corresponding path program 26 times [2020-10-13 23:16:59,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:59,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841531968] [2020-10-13 23:16:59,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:59,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:59,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:59,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:59,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:04,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:04,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 23:17:04,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:04,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 23:17:04,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:04,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:04,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:17:04,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:17:04,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 23:17:04,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:04,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:04,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:04,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:04,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:04,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:04,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:04,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:17:04,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:04,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:04,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:04,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:04,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:04,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:04,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 23:17:04,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:04,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:04,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:04,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:04,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:04,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:04,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 23:17:04,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:04,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:04,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:04,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:17:04,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:04,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:04,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 23:17:04,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:04,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:04,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:04,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:04,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:04,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:04,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 23:17:04,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:04,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:04,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:04,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:17:04,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:04,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:04,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 23:17:04,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:04,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:04,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:04,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:04,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:04,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:04,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 23:17:04,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:04,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:04,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:04,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:17:04,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:04,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:04,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1319 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1219 trivial. 0 not checked. [2020-10-13 23:17:04,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841531968] [2020-10-13 23:17:04,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:04,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:17:04,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505440580] [2020-10-13 23:17:04,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:17:04,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:04,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:17:04,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:17:04,885 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 14 states. [2020-10-13 23:17:05,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:05,016 INFO L93 Difference]: Finished difference Result 134 states and 142 transitions. [2020-10-13 23:17:05,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:17:05,017 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 132 [2020-10-13 23:17:05,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:05,018 INFO L225 Difference]: With dead ends: 134 [2020-10-13 23:17:05,018 INFO L226 Difference]: Without dead ends: 82 [2020-10-13 23:17:05,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:17:05,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-13 23:17:05,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-13 23:17:05,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-13 23:17:05,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-13 23:17:05,024 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 132 [2020-10-13 23:17:05,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:05,025 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-13 23:17:05,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:17:05,025 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-13 23:17:05,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 23:17:05,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:05,026 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:17:05,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 23:17:05,026 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:05,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:05,027 INFO L82 PathProgramCache]: Analyzing trace with hash 526960157, now seen corresponding path program 27 times [2020-10-13 23:17:05,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:05,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373908024] [2020-10-13 23:17:05,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:05,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:05,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:05,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:05,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:10,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:10,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 23:17:10,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:10,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:17:10,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:10,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:10,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:17:10,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-13 23:17:10,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 23:17:10,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:10,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:10,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:10,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:10,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:10,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:10,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:10,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:10,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:10,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:10,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:10,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:10,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:10,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 23:17:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:10,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:10,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:10,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:10,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:10,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:10,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 23:17:10,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:10,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:10,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:10,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:10,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:10,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:10,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 23:17:10,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:10,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:10,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:10,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:10,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:10,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:10,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 23:17:10,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:10,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:10,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:10,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:10,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:10,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:10,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 23:17:10,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:10,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:10,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:10,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:10,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:10,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:10,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 23:17:10,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:10,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:10,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:10,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:17:10,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:10,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:10,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1291 trivial. 0 not checked. [2020-10-13 23:17:10,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373908024] [2020-10-13 23:17:10,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:10,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:17:10,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324209673] [2020-10-13 23:17:10,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:17:10,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:10,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:17:10,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:17:10,256 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 11 states. [2020-10-13 23:17:10,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:10,374 INFO L93 Difference]: Finished difference Result 117 states and 122 transitions. [2020-10-13 23:17:10,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:17:10,375 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 134 [2020-10-13 23:17:10,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:10,376 INFO L225 Difference]: With dead ends: 117 [2020-10-13 23:17:10,376 INFO L226 Difference]: Without dead ends: 84 [2020-10-13 23:17:10,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:17:10,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-13 23:17:10,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-13 23:17:10,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-13 23:17:10,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-13 23:17:10,382 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 134 [2020-10-13 23:17:10,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:10,382 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-13 23:17:10,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:17:10,382 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-13 23:17:10,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-13 23:17:10,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:10,383 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:17:10,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 23:17:10,384 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:10,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:10,384 INFO L82 PathProgramCache]: Analyzing trace with hash 2147103003, now seen corresponding path program 28 times [2020-10-13 23:17:10,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:10,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667042074] [2020-10-13 23:17:10,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:10,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:10,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:10,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:10,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:10,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:15,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:15,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 23:17:15,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:15,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 23:17:15,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:15,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:15,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 23:17:15,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:17:15,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 23:17:15,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:15,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:15,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:15,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:15,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:15,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:15,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:15,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:15,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:15,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:15,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:15,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:15,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:15,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 23:17:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:15,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:15,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:15,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:15,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:15,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:15,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 23:17:15,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:15,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:15,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:15,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:17:15,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:15,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:15,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 23:17:15,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:15,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:15,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:15,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:15,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:15,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:15,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 23:17:15,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:15,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:15,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:15,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:17:15,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:15,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:15,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 23:17:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:15,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:15,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:15,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:15,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:15,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:15,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 23:17:15,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:15,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:15,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:15,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:17:15,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:15,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:15,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1355 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1234 trivial. 0 not checked. [2020-10-13 23:17:15,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667042074] [2020-10-13 23:17:15,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:15,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 23:17:15,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054402473] [2020-10-13 23:17:15,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 23:17:15,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:15,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 23:17:15,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:17:15,660 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 15 states. [2020-10-13 23:17:15,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:15,806 INFO L93 Difference]: Finished difference Result 140 states and 148 transitions. [2020-10-13 23:17:15,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 23:17:15,807 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 136 [2020-10-13 23:17:15,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:15,808 INFO L225 Difference]: With dead ends: 140 [2020-10-13 23:17:15,808 INFO L226 Difference]: Without dead ends: 86 [2020-10-13 23:17:15,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:17:15,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-13 23:17:15,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-13 23:17:15,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-13 23:17:15,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-13 23:17:15,815 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 136 [2020-10-13 23:17:15,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:15,815 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-13 23:17:15,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 23:17:15,815 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-13 23:17:15,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-13 23:17:15,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:15,816 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 12, 12, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:17:15,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 23:17:15,817 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:15,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:15,817 INFO L82 PathProgramCache]: Analyzing trace with hash 56406909, now seen corresponding path program 29 times [2020-10-13 23:17:15,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:15,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376933557] [2020-10-13 23:17:15,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:15,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:15,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:15,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:16,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:20,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:20,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-13 23:17:20,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:20,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:17:20,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:20,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:20,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:17:20,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:17:20,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 23:17:20,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:20,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:20,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:20,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:20,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:20,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:20,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:20,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:20,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:20,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:20,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:20,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:20,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:20,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:20,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 23:17:20,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:20,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:20,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:21,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:21,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:21,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:21,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 23:17:21,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:21,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:21,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:21,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:17:21,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:21,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:21,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 23:17:21,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:21,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:21,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:21,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:21,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:21,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:21,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 23:17:21,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:21,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:21,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:21,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:17:21,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:21,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:21,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-13 23:17:21,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:21,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:21,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:21,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:21,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:21,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:21,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 23:17:21,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:21,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:21,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:21,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:17:21,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:21,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:21,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1234 trivial. 0 not checked. [2020-10-13 23:17:21,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376933557] [2020-10-13 23:17:21,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:21,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 23:17:21,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882651101] [2020-10-13 23:17:21,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 23:17:21,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:21,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 23:17:21,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:17:21,090 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 16 states. [2020-10-13 23:17:21,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:21,207 INFO L93 Difference]: Finished difference Result 142 states and 150 transitions. [2020-10-13 23:17:21,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 23:17:21,207 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 138 [2020-10-13 23:17:21,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:21,208 INFO L225 Difference]: With dead ends: 142 [2020-10-13 23:17:21,208 INFO L226 Difference]: Without dead ends: 88 [2020-10-13 23:17:21,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:17:21,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-13 23:17:21,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-13 23:17:21,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-13 23:17:21,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-13 23:17:21,217 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 138 [2020-10-13 23:17:21,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:21,218 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-13 23:17:21,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 23:17:21,218 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-13 23:17:21,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-13 23:17:21,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:21,219 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 13, 13, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:17:21,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 23:17:21,219 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:21,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:21,220 INFO L82 PathProgramCache]: Analyzing trace with hash 942155103, now seen corresponding path program 30 times [2020-10-13 23:17:21,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:21,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777536462] [2020-10-13 23:17:21,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:21,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:21,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:21,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:21,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:26,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:26,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 23:17:26,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:26,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 23:17:26,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:26,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:26,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 23:17:26,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 23:17:26,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 23:17:26,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:26,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:26,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:26,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:26,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:26,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:26,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:26,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:26,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:26,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:26,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:26,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:26,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:26,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:26,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 23:17:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:26,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:26,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:26,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:26,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:26,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 23:17:26,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:26,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:26,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 23:17:26,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:17:26,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 23:17:26,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:26,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 23:17:26,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:26,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:26,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:26,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:26,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:26,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:26,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 23:17:26,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:26,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:26,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:26,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:17:26,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:26,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:26,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 23:17:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:26,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:26,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:26,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:26,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:26,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:26,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 23:17:26,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:26,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:26,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:26,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:17:26,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:26,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:26,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1403 backedges. 0 proven. 657 refuted. 0 times theorem prover too weak. 746 trivial. 0 not checked. [2020-10-13 23:17:26,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777536462] [2020-10-13 23:17:26,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:26,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 23:17:26,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880423607] [2020-10-13 23:17:26,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 23:17:26,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:26,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 23:17:26,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:17:26,486 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 15 states. [2020-10-13 23:17:26,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:26,803 INFO L93 Difference]: Finished difference Result 143 states and 153 transitions. [2020-10-13 23:17:26,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 23:17:26,804 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 140 [2020-10-13 23:17:26,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:26,805 INFO L225 Difference]: With dead ends: 143 [2020-10-13 23:17:26,805 INFO L226 Difference]: Without dead ends: 90 [2020-10-13 23:17:26,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-13 23:17:26,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-13 23:17:26,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-13 23:17:26,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-13 23:17:26,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-13 23:17:26,812 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 140 [2020-10-13 23:17:26,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:26,813 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-13 23:17:26,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 23:17:26,813 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-13 23:17:26,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-13 23:17:26,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:26,814 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 13, 13, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:17:26,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 23:17:26,814 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:26,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:26,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1878965795, now seen corresponding path program 31 times [2020-10-13 23:17:26,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:26,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895666925] [2020-10-13 23:17:26,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:26,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:26,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:26,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:27,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:31,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:31,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-13 23:17:31,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:31,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:17:31,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:31,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:31,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:17:31,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-13 23:17:31,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 23:17:31,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:31,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:31,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:31,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:31,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:31,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:31,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:31,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:31,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:31,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:31,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:31,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:31,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:17:31,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 23:17:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:31,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:31,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:31,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:31,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 23:17:31,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:31,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 23:17:31,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:31,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:31,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:31,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:31,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:31,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:31,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 23:17:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:31,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:31,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:31,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 23:17:31,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:31,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 23:17:31,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:31,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:31,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:17:31,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:17:31,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 23:17:31,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:32,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-13 23:17:32,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:32,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:32,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:32,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:32,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 23:17:32,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:32,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 23:17:32,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:32,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:32,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:32,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 23:17:32,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:32,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:32,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1616 backedges. 316 proven. 460 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-10-13 23:17:32,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895666925] [2020-10-13 23:17:32,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:32,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 23:17:32,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954043864] [2020-10-13 23:17:32,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 23:17:32,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:32,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 23:17:32,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:17:32,104 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 16 states. [2020-10-13 23:17:32,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:32,429 INFO L93 Difference]: Finished difference Result 147 states and 157 transitions. [2020-10-13 23:17:32,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 23:17:32,429 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 146 [2020-10-13 23:17:32,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:32,430 INFO L225 Difference]: With dead ends: 147 [2020-10-13 23:17:32,431 INFO L226 Difference]: Without dead ends: 92 [2020-10-13 23:17:32,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-13 23:17:32,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-13 23:17:32,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-13 23:17:32,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-13 23:17:32,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-13 23:17:32,440 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 146 [2020-10-13 23:17:32,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:32,441 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-13 23:17:32,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 23:17:32,441 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-13 23:17:32,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 23:17:32,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:32,442 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:17:32,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 23:17:32,442 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:32,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:32,443 INFO L82 PathProgramCache]: Analyzing trace with hash -394836005, now seen corresponding path program 32 times [2020-10-13 23:17:32,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:32,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749567337] [2020-10-13 23:17:32,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:32,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:32,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:32,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:32,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:37,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:37,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 23:17:37,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:37,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:17:37,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:37,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:37,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:17:37,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-13 23:17:37,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 23:17:37,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:37,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:37,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:37,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:37,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:37,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:37,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:37,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:37,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:37,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:37,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:37,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:37,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:37,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 23:17:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:37,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:37,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:37,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:37,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:17:37,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:37,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 23:17:37,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:37,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:37,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:37,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:37,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:37,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:37,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 23:17:37,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:37,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:37,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:37,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:37,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:17:37,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:37,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 23:17:37,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:37,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:37,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:37,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:37,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:37,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:37,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 23:17:37,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:37,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:37,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:37,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:37,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:17:37,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:37,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 23:17:37,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:37,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:37,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:37,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:17:37,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:37,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:37,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1847 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1783 trivial. 0 not checked. [2020-10-13 23:17:37,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749567337] [2020-10-13 23:17:37,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:37,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:17:37,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498660070] [2020-10-13 23:17:37,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:17:37,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:37,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:17:37,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:17:37,690 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 12 states. [2020-10-13 23:17:37,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:37,804 INFO L93 Difference]: Finished difference Result 131 states and 136 transitions. [2020-10-13 23:17:37,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:17:37,805 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 152 [2020-10-13 23:17:37,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:37,806 INFO L225 Difference]: With dead ends: 131 [2020-10-13 23:17:37,807 INFO L226 Difference]: Without dead ends: 94 [2020-10-13 23:17:37,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:17:37,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-13 23:17:37,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-13 23:17:37,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-13 23:17:37,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-13 23:17:37,813 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 152 [2020-10-13 23:17:37,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:37,813 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-13 23:17:37,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:17:37,813 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-13 23:17:37,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-13 23:17:37,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:37,815 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:17:37,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 23:17:37,815 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:37,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:37,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1658657625, now seen corresponding path program 33 times [2020-10-13 23:17:37,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:37,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873205124] [2020-10-13 23:17:37,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:37,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:37,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:37,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:37,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:38,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:42,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:42,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 23:17:42,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:42,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 23:17:42,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:42,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:42,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 23:17:42,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 23:17:42,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 23:17:42,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:42,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:42,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:42,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:42,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:42,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:42,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:42,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:42,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:42,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:42,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:42,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:42,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:42,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 23:17:42,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:42,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:42,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:42,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:17:42,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:42,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 23:17:42,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:42,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:42,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 23:17:42,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:17:42,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 23:17:42,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:43,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 23:17:43,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:43,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:43,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:43,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:43,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:17:43,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:43,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 23:17:43,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:43,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:43,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:43,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:17:43,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:43,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:43,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 23:17:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:43,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:43,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:43,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:43,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:17:43,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:43,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 23:17:43,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:43,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:43,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:43,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:17:43,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:43,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:43,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 0 proven. 905 refuted. 0 times theorem prover too weak. 959 trivial. 0 not checked. [2020-10-13 23:17:43,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873205124] [2020-10-13 23:17:43,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:43,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 23:17:43,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903527454] [2020-10-13 23:17:43,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 23:17:43,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:43,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 23:17:43,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:17:43,148 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 17 states. [2020-10-13 23:17:43,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:43,501 INFO L93 Difference]: Finished difference Result 155 states and 165 transitions. [2020-10-13 23:17:43,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 23:17:43,502 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 154 [2020-10-13 23:17:43,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:43,503 INFO L225 Difference]: With dead ends: 155 [2020-10-13 23:17:43,503 INFO L226 Difference]: Without dead ends: 96 [2020-10-13 23:17:43,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-13 23:17:43,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-13 23:17:43,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-13 23:17:43,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-13 23:17:43,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-13 23:17:43,510 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 154 [2020-10-13 23:17:43,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:43,510 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-13 23:17:43,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 23:17:43,510 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-13 23:17:43,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-13 23:17:43,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:43,511 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 13, 13, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:17:43,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 23:17:43,512 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:43,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:43,512 INFO L82 PathProgramCache]: Analyzing trace with hash 501838679, now seen corresponding path program 34 times [2020-10-13 23:17:43,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:43,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052204545] [2020-10-13 23:17:43,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:43,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:43,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:43,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:43,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:48,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:48,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-13 23:17:48,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:48,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 23:17:48,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:48,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:48,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 23:17:48,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:17:48,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 23:17:48,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:48,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:48,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:48,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:48,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:48,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:48,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:48,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:48,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:48,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:48,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:48,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:48,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:48,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:48,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 23:17:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:48,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:48,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:48,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:48,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:17:48,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:48,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 23:17:48,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:48,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:48,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:48,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:17:48,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:48,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:48,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 23:17:48,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:48,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:48,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:48,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:48,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:17:48,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:48,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 23:17:48,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:48,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:48,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:48,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:17:48,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:48,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:48,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 23:17:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:48,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:48,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:48,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:48,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:17:48,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:48,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 23:17:48,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:48,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:48,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:48,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:17:48,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:48,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:48,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2113 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 1944 trivial. 0 not checked. [2020-10-13 23:17:48,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052204545] [2020-10-13 23:17:48,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:48,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 23:17:48,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438834276] [2020-10-13 23:17:48,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 23:17:48,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:48,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 23:17:48,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:17:48,831 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 17 states. [2020-10-13 23:17:48,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:48,973 INFO L93 Difference]: Finished difference Result 160 states and 168 transitions. [2020-10-13 23:17:48,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 23:17:48,973 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 160 [2020-10-13 23:17:48,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:48,974 INFO L225 Difference]: With dead ends: 160 [2020-10-13 23:17:48,974 INFO L226 Difference]: Without dead ends: 98 [2020-10-13 23:17:48,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:17:48,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-13 23:17:48,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-13 23:17:48,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-13 23:17:48,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-13 23:17:48,979 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 160 [2020-10-13 23:17:48,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:48,980 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-13 23:17:48,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 23:17:48,980 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-13 23:17:48,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-13 23:17:48,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:48,981 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 14, 14, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:17:48,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 23:17:48,981 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:48,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:48,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1021538233, now seen corresponding path program 35 times [2020-10-13 23:17:48,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:48,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768739770] [2020-10-13 23:17:48,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:49,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:49,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:49,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:49,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:53,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:53,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 23:17:53,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:53,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:17:53,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:53,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:53,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:17:53,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-13 23:17:53,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:17:53,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:54,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:54,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:54,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:54,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:54,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:54,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:54,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:54,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:54,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:54,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:54,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:54,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:54,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 23:17:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:54,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:54,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:54,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:54,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:17:54,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:54,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 23:17:54,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:54,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:54,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:54,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:54,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:54,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:54,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 23:17:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:54,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:54,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:54,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:54,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:17:54,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:54,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 23:17:54,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:54,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:54,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:54,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:54,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:54,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:54,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-13 23:17:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:54,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:54,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:54,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:54,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:17:54,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:54,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 23:17:54,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:54,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:54,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:54,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:17:54,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:54,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:54,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2140 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2020-10-13 23:17:54,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768739770] [2020-10-13 23:17:54,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:54,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:17:54,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554393968] [2020-10-13 23:17:54,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:17:54,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:54,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:17:54,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:17:54,250 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 13 states. [2020-10-13 23:17:54,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:54,330 INFO L93 Difference]: Finished difference Result 139 states and 144 transitions. [2020-10-13 23:17:54,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:17:54,331 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 162 [2020-10-13 23:17:54,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:54,332 INFO L225 Difference]: With dead ends: 139 [2020-10-13 23:17:54,332 INFO L226 Difference]: Without dead ends: 100 [2020-10-13 23:17:54,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:17:54,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-13 23:17:54,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-13 23:17:54,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-13 23:17:54,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-13 23:17:54,338 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 162 [2020-10-13 23:17:54,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:54,338 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-13 23:17:54,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:17:54,338 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-13 23:17:54,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-13 23:17:54,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:54,339 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 14, 14, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:17:54,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 23:17:54,340 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:54,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:54,340 INFO L82 PathProgramCache]: Analyzing trace with hash 526103479, now seen corresponding path program 36 times [2020-10-13 23:17:54,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:54,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002548187] [2020-10-13 23:17:54,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:54,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:54,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:54,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:54,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:59,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:59,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 23:17:59,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:59,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 23:17:59,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:59,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:59,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 23:17:59,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:17:59,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 23:17:59,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:59,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:59,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:59,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:59,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:59,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:59,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:59,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:59,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:59,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:59,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:59,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:59,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:59,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 23:17:59,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:59,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:59,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:59,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:59,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:17:59,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:59,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 23:17:59,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:59,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:59,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:59,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:17:59,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:59,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:59,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 23:17:59,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:59,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:59,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:59,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:59,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:17:59,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:59,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 23:17:59,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:59,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:59,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:59,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:17:59,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:59,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:59,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-13 23:17:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:59,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:59,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:59,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:59,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:17:59,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:59,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 23:17:59,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:59,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:59,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:59,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:17:59,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:59,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:59,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2159 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1963 trivial. 0 not checked. [2020-10-13 23:17:59,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002548187] [2020-10-13 23:17:59,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:59,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 23:17:59,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546244451] [2020-10-13 23:17:59,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 23:17:59,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:59,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 23:17:59,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:17:59,673 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 18 states. [2020-10-13 23:17:59,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:59,823 INFO L93 Difference]: Finished difference Result 166 states and 174 transitions. [2020-10-13 23:17:59,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 23:17:59,823 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 164 [2020-10-13 23:17:59,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:59,825 INFO L225 Difference]: With dead ends: 166 [2020-10-13 23:17:59,825 INFO L226 Difference]: Without dead ends: 102 [2020-10-13 23:17:59,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:17:59,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-13 23:17:59,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-13 23:17:59,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-13 23:17:59,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-10-13 23:17:59,831 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 164 [2020-10-13 23:17:59,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:59,831 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-10-13 23:17:59,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 23:17:59,831 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-10-13 23:17:59,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-13 23:17:59,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:59,832 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 15, 15, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:17:59,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 23:17:59,833 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:59,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:59,833 INFO L82 PathProgramCache]: Analyzing trace with hash -27480295, now seen corresponding path program 37 times [2020-10-13 23:17:59,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:59,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213304008] [2020-10-13 23:17:59,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:59,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:59,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:59,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:59,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:59,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:04,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:04,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 23:18:04,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:04,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 23:18:04,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:04,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:04,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 23:18:04,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 23:18:04,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 23:18:04,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:04,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:04,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:04,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:04,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:04,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:04,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:18:04,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:04,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:04,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:04,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:04,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:04,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:04,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 23:18:04,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:04,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:04,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:04,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:18:04,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:04,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 23:18:04,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:04,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:04,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 23:18:04,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:18:04,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 23:18:04,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:05,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 23:18:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:05,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:05,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:05,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:05,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:18:05,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:05,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 23:18:05,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:05,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:05,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:05,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:18:05,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:05,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:05,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-13 23:18:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:05,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:05,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:05,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:05,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:18:05,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:05,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 23:18:05,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:05,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:05,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:05,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:18:05,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:05,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:05,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2188 backedges. 0 proven. 1044 refuted. 0 times theorem prover too weak. 1144 trivial. 0 not checked. [2020-10-13 23:18:05,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213304008] [2020-10-13 23:18:05,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:05,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 23:18:05,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819801098] [2020-10-13 23:18:05,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 23:18:05,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:05,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 23:18:05,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:18:05,193 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 18 states. [2020-10-13 23:18:05,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:05,548 INFO L93 Difference]: Finished difference Result 167 states and 177 transitions. [2020-10-13 23:18:05,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 23:18:05,548 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 166 [2020-10-13 23:18:05,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:05,549 INFO L225 Difference]: With dead ends: 167 [2020-10-13 23:18:05,550 INFO L226 Difference]: Without dead ends: 104 [2020-10-13 23:18:05,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 23:18:05,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-13 23:18:05,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-13 23:18:05,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-13 23:18:05,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2020-10-13 23:18:05,556 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 166 [2020-10-13 23:18:05,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:05,556 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2020-10-13 23:18:05,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 23:18:05,557 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2020-10-13 23:18:05,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 23:18:05,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:05,558 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:18:05,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 23:18:05,558 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:05,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:05,559 INFO L82 PathProgramCache]: Analyzing trace with hash 945772055, now seen corresponding path program 38 times [2020-10-13 23:18:05,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:05,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382508423] [2020-10-13 23:18:05,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:05,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:05,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:05,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:05,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:05,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:10,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:10,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 23:18:10,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:10,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 23:18:10,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:10,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:10,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:18:10,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-13 23:18:10,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 23:18:10,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:10,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:10,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:10,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:10,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:10,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:10,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:18:10,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:10,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:10,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:10,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:10,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:10,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:10,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 23:18:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:10,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:10,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:10,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:10,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:10,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:10,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 23:18:10,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:10,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:10,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:10,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:10,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:10,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:10,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 23:18:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:10,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:10,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:10,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:10,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:10,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:10,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 23:18:10,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:10,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:10,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:10,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:10,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:10,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:10,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-13 23:18:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:10,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:10,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:10,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:10,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:10,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:10,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 23:18:10,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:10,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:10,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:10,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:18:10,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:10,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:10,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2455 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 2355 trivial. 0 not checked. [2020-10-13 23:18:10,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382508423] [2020-10-13 23:18:10,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:10,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:18:10,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411128783] [2020-10-13 23:18:10,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:18:10,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:10,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:18:10,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:18:10,893 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand 14 states. [2020-10-13 23:18:10,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:10,995 INFO L93 Difference]: Finished difference Result 147 states and 152 transitions. [2020-10-13 23:18:10,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:18:10,995 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 172 [2020-10-13 23:18:10,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:10,996 INFO L225 Difference]: With dead ends: 147 [2020-10-13 23:18:10,996 INFO L226 Difference]: Without dead ends: 106 [2020-10-13 23:18:10,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:18:10,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-13 23:18:11,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-13 23:18:11,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-13 23:18:11,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2020-10-13 23:18:11,002 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 172 [2020-10-13 23:18:11,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:11,002 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2020-10-13 23:18:11,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:18:11,002 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2020-10-13 23:18:11,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-13 23:18:11,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:11,004 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:18:11,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 23:18:11,004 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:11,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:11,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1383623317, now seen corresponding path program 39 times [2020-10-13 23:18:11,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:11,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907468361] [2020-10-13 23:18:11,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:11,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:11,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:11,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:11,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:11,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:16,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:16,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-13 23:18:16,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:16,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 23:18:16,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:16,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:16,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 23:18:16,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:18:16,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 23:18:16,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:16,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:16,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:16,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:16,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:16,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:16,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:16,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:18:16,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:16,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:16,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:16,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:16,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:16,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:16,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 23:18:16,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:16,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:16,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:16,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:16,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:16,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:16,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 23:18:16,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:16,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:16,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:16,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:18:16,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:16,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:16,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 23:18:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:16,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:16,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:16,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:16,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:16,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:16,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 23:18:16,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:16,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:16,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:16,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:18:16,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:16,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:16,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-13 23:18:16,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:16,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:16,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:16,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:16,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:16,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:16,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 23:18:16,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:16,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:16,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:16,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:18:16,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:16,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:16,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2476 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 2251 trivial. 0 not checked. [2020-10-13 23:18:16,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907468361] [2020-10-13 23:18:16,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:16,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 23:18:16,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865588291] [2020-10-13 23:18:16,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 23:18:16,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:16,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 23:18:16,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:18:16,430 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand 19 states. [2020-10-13 23:18:16,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:16,593 INFO L93 Difference]: Finished difference Result 176 states and 184 transitions. [2020-10-13 23:18:16,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 23:18:16,594 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 174 [2020-10-13 23:18:16,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:16,595 INFO L225 Difference]: With dead ends: 176 [2020-10-13 23:18:16,595 INFO L226 Difference]: Without dead ends: 108 [2020-10-13 23:18:16,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:18:16,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-13 23:18:16,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-13 23:18:16,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-13 23:18:16,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-10-13 23:18:16,601 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 174 [2020-10-13 23:18:16,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:16,601 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-10-13 23:18:16,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 23:18:16,602 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-10-13 23:18:16,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-13 23:18:16,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:16,603 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 16, 16, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:18:16,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 23:18:16,603 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:16,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:16,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1404562569, now seen corresponding path program 40 times [2020-10-13 23:18:16,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:16,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978442132] [2020-10-13 23:18:16,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:16,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:16,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:16,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:16,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:17,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:21,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:21,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-13 23:18:21,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:21,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 23:18:21,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:21,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:21,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 23:18:21,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:18:21,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 23:18:21,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:21,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:21,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:21,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:21,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:21,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:21,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:21,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:18:21,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:21,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:21,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:21,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:21,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:21,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:21,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 23:18:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:21,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:21,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:21,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:21,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:21,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:21,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 23:18:21,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:21,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:21,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:21,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:18:21,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:21,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:21,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 23:18:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:21,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:21,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:21,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:21,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:21,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:21,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 23:18:21,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:21,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:21,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:21,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:18:21,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:21,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:21,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-13 23:18:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:21,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:21,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:22,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:22,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:22,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:22,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 23:18:22,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:22,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:22,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:22,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:18:22,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:22,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:22,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2507 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 2251 trivial. 0 not checked. [2020-10-13 23:18:22,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978442132] [2020-10-13 23:18:22,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:22,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 23:18:22,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180177429] [2020-10-13 23:18:22,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 23:18:22,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:22,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 23:18:22,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:18:22,058 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 20 states. [2020-10-13 23:18:22,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:22,221 INFO L93 Difference]: Finished difference Result 178 states and 186 transitions. [2020-10-13 23:18:22,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 23:18:22,221 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 176 [2020-10-13 23:18:22,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:22,223 INFO L225 Difference]: With dead ends: 178 [2020-10-13 23:18:22,223 INFO L226 Difference]: Without dead ends: 110 [2020-10-13 23:18:22,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:18:22,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-13 23:18:22,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2020-10-13 23:18:22,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-13 23:18:22,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2020-10-13 23:18:22,228 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 176 [2020-10-13 23:18:22,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:22,229 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2020-10-13 23:18:22,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 23:18:22,229 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2020-10-13 23:18:22,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-13 23:18:22,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:22,230 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 17, 17, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:18:22,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 23:18:22,230 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:22,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:22,231 INFO L82 PathProgramCache]: Analyzing trace with hash -791606311, now seen corresponding path program 41 times [2020-10-13 23:18:22,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:22,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097437540] [2020-10-13 23:18:22,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:22,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:22,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:22,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:22,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:27,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:27,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-13 23:18:27,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:27,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 23:18:27,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:27,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:27,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 23:18:27,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-13 23:18:27,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 23:18:27,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:27,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:27,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:27,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:27,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:27,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:27,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:18:27,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:27,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:27,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:27,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:27,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:27,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:27,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 23:18:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:27,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:27,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:27,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:27,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:27,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 23:18:27,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:27,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:27,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 23:18:27,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:18:27,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 23:18:27,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:27,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 23:18:27,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:27,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:27,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:27,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:27,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:27,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:27,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 23:18:27,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:27,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:27,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:27,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:18:27,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:27,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:27,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 23:18:27,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:27,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:27,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:27,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:27,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:27,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:27,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 23:18:27,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:27,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:27,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:27,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:18:27,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:27,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:27,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2540 backedges. 0 proven. 1193 refuted. 0 times theorem prover too weak. 1347 trivial. 0 not checked. [2020-10-13 23:18:27,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097437540] [2020-10-13 23:18:27,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:27,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 23:18:27,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503345013] [2020-10-13 23:18:27,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 23:18:27,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:27,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 23:18:27,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:18:27,650 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 19 states. [2020-10-13 23:18:28,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:28,067 INFO L93 Difference]: Finished difference Result 179 states and 189 transitions. [2020-10-13 23:18:28,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 23:18:28,067 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 178 [2020-10-13 23:18:28,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:28,068 INFO L225 Difference]: With dead ends: 179 [2020-10-13 23:18:28,068 INFO L226 Difference]: Without dead ends: 112 [2020-10-13 23:18:28,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 23:18:28,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-13 23:18:28,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2020-10-13 23:18:28,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-13 23:18:28,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2020-10-13 23:18:28,075 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 178 [2020-10-13 23:18:28,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:28,075 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2020-10-13 23:18:28,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 23:18:28,076 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2020-10-13 23:18:28,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-13 23:18:28,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:28,077 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 17, 17, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:18:28,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 23:18:28,077 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:28,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:28,078 INFO L82 PathProgramCache]: Analyzing trace with hash 845873623, now seen corresponding path program 42 times [2020-10-13 23:18:28,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:28,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497345109] [2020-10-13 23:18:28,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:28,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:28,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:28,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:28,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:28,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:33,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:33,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 23:18:33,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:33,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 23:18:33,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:33,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:33,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 23:18:33,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-13 23:18:33,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 23:18:33,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:33,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:33,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:33,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:33,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:33,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:33,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:18:33,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:33,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:33,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:33,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:33,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:33,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:33,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 23:18:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:33,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:33,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:33,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:33,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 23:18:33,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:33,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 23:18:33,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:33,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:33,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:33,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:33,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:33,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:33,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 23:18:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:33,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:33,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:33,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 23:18:33,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:33,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 23:18:33,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:33,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:33,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 23:18:33,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:18:33,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 23:18:33,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:33,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-13 23:18:33,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:33,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:33,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:33,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:33,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 23:18:33,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:33,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 23:18:33,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:33,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:33,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:33,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 23:18:33,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:33,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:33,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2825 backedges. 548 proven. 804 refuted. 0 times theorem prover too weak. 1473 trivial. 0 not checked. [2020-10-13 23:18:33,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497345109] [2020-10-13 23:18:33,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:33,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 23:18:33,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676843184] [2020-10-13 23:18:33,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 23:18:33,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:33,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 23:18:33,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:18:33,546 INFO L87 Difference]: Start difference. First operand 111 states and 115 transitions. Second operand 20 states. [2020-10-13 23:18:33,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:33,969 INFO L93 Difference]: Finished difference Result 183 states and 193 transitions. [2020-10-13 23:18:33,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 23:18:33,969 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 184 [2020-10-13 23:18:33,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:33,970 INFO L225 Difference]: With dead ends: 183 [2020-10-13 23:18:33,971 INFO L226 Difference]: Without dead ends: 114 [2020-10-13 23:18:33,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-13 23:18:33,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-13 23:18:33,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2020-10-13 23:18:33,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-13 23:18:33,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 117 transitions. [2020-10-13 23:18:33,976 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 117 transitions. Word has length 184 [2020-10-13 23:18:33,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:33,977 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 117 transitions. [2020-10-13 23:18:33,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 23:18:33,977 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 117 transitions. [2020-10-13 23:18:33,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-13 23:18:33,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:33,978 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 17, 17, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:18:33,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 23:18:33,978 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:33,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:33,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1915666773, now seen corresponding path program 43 times [2020-10-13 23:18:33,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:33,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187765477] [2020-10-13 23:18:33,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:33,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:34,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:34,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:34,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:39,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:39,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-13 23:18:39,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:39,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 23:18:39,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:39,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:39,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 23:18:39,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 23:18:39,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 23:18:39,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:39,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:39,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:39,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:39,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:39,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:39,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:39,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:18:39,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:39,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:39,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:39,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:39,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:39,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:39,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 23:18:39,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:39,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:39,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:39,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:39,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 23:18:39,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:39,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 23:18:39,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:39,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:39,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:39,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:39,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:39,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:39,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 23:18:39,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:39,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:39,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:39,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:39,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 23:18:39,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:39,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 23:18:39,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:39,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:39,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:39,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:39,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:39,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:39,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-13 23:18:39,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:39,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:39,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:39,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:39,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 23:18:39,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:39,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 23:18:39,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:39,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:39,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:39,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-13 23:18:39,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:39,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:39,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3128 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 3007 trivial. 0 not checked. [2020-10-13 23:18:39,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187765477] [2020-10-13 23:18:39,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:39,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 23:18:39,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399774448] [2020-10-13 23:18:39,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 23:18:39,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:39,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 23:18:39,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:18:39,378 INFO L87 Difference]: Start difference. First operand 113 states and 117 transitions. Second operand 15 states. [2020-10-13 23:18:39,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:39,521 INFO L93 Difference]: Finished difference Result 161 states and 166 transitions. [2020-10-13 23:18:39,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 23:18:39,521 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 190 [2020-10-13 23:18:39,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:39,523 INFO L225 Difference]: With dead ends: 161 [2020-10-13 23:18:39,523 INFO L226 Difference]: Without dead ends: 116 [2020-10-13 23:18:39,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:18:39,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-13 23:18:39,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2020-10-13 23:18:39,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-13 23:18:39,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 119 transitions. [2020-10-13 23:18:39,529 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 119 transitions. Word has length 190 [2020-10-13 23:18:39,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:39,529 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 119 transitions. [2020-10-13 23:18:39,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 23:18:39,530 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 119 transitions. [2020-10-13 23:18:39,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-13 23:18:39,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:39,531 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 17, 17, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:18:39,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 23:18:39,531 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:39,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:39,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1649942957, now seen corresponding path program 44 times [2020-10-13 23:18:39,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:39,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391720155] [2020-10-13 23:18:39,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:39,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:39,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:39,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:39,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:39,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking...