/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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:50:23,799 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:50:23,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:50:23,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:50:23,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:50:23,854 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:50:23,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:50:23,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:50:23,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:50:23,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:50:23,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:50:23,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:50:23,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:50:23,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:50:23,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:50:23,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:50:23,876 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:50:23,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:50:23,879 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:50:23,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:50:23,891 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:50:23,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:50:23,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:50:23,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:50:23,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:50:23,909 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:50:23,909 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:50:23,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:50:23,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:50:23,911 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:50:23,912 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:50:23,912 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:50:23,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:50:23,919 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:50:23,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:50:23,920 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:50:23,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:50:23,920 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:50:23,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:50:23,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:50:23,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:50:23,926 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 09:50:23,967 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:50:23,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:50:23,970 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:50:23,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:50:23,970 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:50:23,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:50:23,971 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:50:23,971 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:50:23,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:50:23,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:50:23,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:50:23,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:50:23,973 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:50:23,974 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:50:23,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:50:23,974 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:50:23,974 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:50:23,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:50:23,975 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:50:23,975 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:50:23,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:50:23,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:50:23,976 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:50:23,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:50:23,976 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:50:23,976 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:50:23,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:50:23,977 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:50:23,977 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:50:23,977 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:50:24,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:50:24,332 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:50:24,335 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:50:24,337 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:50:24,337 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:50:24,338 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label33.c [2020-10-13 09:50:24,401 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28fad3514/4856712dac91413981551242c41c35d8/FLAG3b3c6a31f [2020-10-13 09:50:25,223 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:50:25,224 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label33.c [2020-10-13 09:50:25,265 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28fad3514/4856712dac91413981551242c41c35d8/FLAG3b3c6a31f [2020-10-13 09:50:25,292 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28fad3514/4856712dac91413981551242c41c35d8 [2020-10-13 09:50:25,303 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:50:25,306 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:50:25,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:50:25,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:50:25,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:50:25,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:50:25" (1/1) ... [2020-10-13 09:50:25,321 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53beef41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:50:25, skipping insertion in model container [2020-10-13 09:50:25,321 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:50:25" (1/1) ... [2020-10-13 09:50:25,331 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:50:25,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:50:26,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:50:26,988 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:50:27,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:50:27,545 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:50:27,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:50:27 WrapperNode [2020-10-13 09:50:27,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:50:27,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:50:27,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:50:27,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:50:27,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:50:27" (1/1) ... [2020-10-13 09:50:27,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:50:27" (1/1) ... [2020-10-13 09:50:27,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:50:27" (1/1) ... [2020-10-13 09:50:27,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:50:27" (1/1) ... [2020-10-13 09:50:27,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:50:27" (1/1) ... [2020-10-13 09:50:27,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:50:27" (1/1) ... [2020-10-13 09:50:27,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:50:27" (1/1) ... [2020-10-13 09:50:27,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:50:27,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:50:27,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:50:27,855 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:50:27,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:50:27" (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 09:50:27,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:50:27,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:50:27,932 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:50:27,932 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:50:27,933 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 09:50:27,933 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:50:27,933 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:50:27,933 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:50:27,934 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 09:50:27,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:50:27,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:50:27,934 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:50:27,934 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:50:27,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:50:27,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:50:34,167 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:50:34,167 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:50:34,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:50:34 BoogieIcfgContainer [2020-10-13 09:50:34,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:50:34,186 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:50:34,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:50:34,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:50:34,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:50:25" (1/3) ... [2020-10-13 09:50:34,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f50e7e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:50:34, skipping insertion in model container [2020-10-13 09:50:34,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:50:27" (2/3) ... [2020-10-13 09:50:34,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f50e7e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:50:34, skipping insertion in model container [2020-10-13 09:50:34,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:50:34" (3/3) ... [2020-10-13 09:50:34,195 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label33.c [2020-10-13 09:50:34,204 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:50:34,219 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:50:34,234 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:50:34,272 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:50:34,272 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:50:34,273 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:50:34,273 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:50:34,273 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:50:34,273 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:50:34,273 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:50:34,274 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:50:34,320 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-13 09:50:34,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-13 09:50:34,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:50:34,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:50:34,330 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:50:34,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:50:34,338 INFO L82 PathProgramCache]: Analyzing trace with hash -666712142, now seen corresponding path program 1 times [2020-10-13 09:50:34,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:50:34,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898829750] [2020-10-13 09:50:34,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:50:34,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:34,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:34,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:34,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 09:50:34,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:34,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 470 [2020-10-13 09:50:34,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:34,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:50:34,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:50:34,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 09:50:34,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:50:35,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:50:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:35,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:35,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:35,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:50:35,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:35,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 09:50:35,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:35,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:50:35,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:35,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:50:35,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:35,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:50:35,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898829750] [2020-10-13 09:50:35,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:50:35,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:50:35,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686611261] [2020-10-13 09:50:35,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:50:35,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:50:35,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:50:35,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:50:35,162 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2020-10-13 09:50:42,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:50:42,322 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2020-10-13 09:50:42,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:50:42,330 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-13 09:50:42,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:50:42,356 INFO L225 Difference]: With dead ends: 2270 [2020-10-13 09:50:42,356 INFO L226 Difference]: Without dead ends: 1432 [2020-10-13 09:50:42,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 09:50:42,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-13 09:50:42,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2020-10-13 09:50:42,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-10-13 09:50:42,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2229 transitions. [2020-10-13 09:50:42,520 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2229 transitions. Word has length 29 [2020-10-13 09:50:42,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:50:42,520 INFO L479 AbstractCegarLoop]: Abstraction has 1425 states and 2229 transitions. [2020-10-13 09:50:42,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:50:42,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2229 transitions. [2020-10-13 09:50:42,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 09:50:42,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:50:42,530 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:50:42,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:50:42,531 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:50:42,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:50:42,531 INFO L82 PathProgramCache]: Analyzing trace with hash 931351542, now seen corresponding path program 1 times [2020-10-13 09:50:42,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:50:42,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232593384] [2020-10-13 09:50:42,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:50:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:42,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:42,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:43,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:43,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 09:50:43,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:50:43,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 964 [2020-10-13 09:50:43,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:43,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:50:43,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 09:50:43,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 09:50:43,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 09:50:43,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:50:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:43,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:43,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:43,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:50:43,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:43,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:50:43,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:43,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:50:43,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:43,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:50:43,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:43,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:50:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:43,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:43,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:43,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:50:43,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:43,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 09:50:43,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:43,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:50:43,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:43,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 09:50:43,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:43,765 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:50:43,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232593384] [2020-10-13 09:50:43,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:50:43,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:50:43,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890822880] [2020-10-13 09:50:43,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:50:43,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:50:43,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:50:43,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:50:43,770 INFO L87 Difference]: Start difference. First operand 1425 states and 2229 transitions. Second operand 6 states. [2020-10-13 09:50:55,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:50:55,554 INFO L93 Difference]: Finished difference Result 4271 states and 7178 transitions. [2020-10-13 09:50:55,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:50:55,557 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-10-13 09:50:55,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:50:55,574 INFO L225 Difference]: With dead ends: 4271 [2020-10-13 09:50:55,575 INFO L226 Difference]: Without dead ends: 2852 [2020-10-13 09:50:55,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:50:55,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2020-10-13 09:50:55,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 2848. [2020-10-13 09:50:55,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2848 states. [2020-10-13 09:50:55,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 4329 transitions. [2020-10-13 09:50:55,667 INFO L78 Accepts]: Start accepts. Automaton has 2848 states and 4329 transitions. Word has length 99 [2020-10-13 09:50:55,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:50:55,668 INFO L479 AbstractCegarLoop]: Abstraction has 2848 states and 4329 transitions. [2020-10-13 09:50:55,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:50:55,668 INFO L276 IsEmpty]: Start isEmpty. Operand 2848 states and 4329 transitions. [2020-10-13 09:50:55,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-13 09:50:55,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:50:55,674 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:50:55,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:50:55,675 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:50:55,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:50:55,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1632961130, now seen corresponding path program 1 times [2020-10-13 09:50:55,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:50:55,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617542906] [2020-10-13 09:50:55,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:50:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:55,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:56,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:56,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:57,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:57,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-13 09:50:57,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:50:57,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1275 [2020-10-13 09:50:57,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:57,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:50:57,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-13 09:50:57,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:50:57,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:57,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:50:57,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:57,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:57,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:57,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:50:57,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:57,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:50:57,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:57,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:50:57,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:57,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:50:57,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:57,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:50:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:57,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:57,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:57,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:50:57,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:57,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-13 09:50:57,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:57,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:50:57,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:57,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-13 09:50:57,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:57,510 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:50:57,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617542906] [2020-10-13 09:50:57,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:50:57,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:50:57,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758669300] [2020-10-13 09:50:57,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:50:57,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:50:57,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:50:57,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:50:57,515 INFO L87 Difference]: Start difference. First operand 2848 states and 4329 transitions. Second operand 5 states. [2020-10-13 09:51:03,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:51:03,146 INFO L93 Difference]: Finished difference Result 5716 states and 8693 transitions. [2020-10-13 09:51:03,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:51:03,149 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-10-13 09:51:03,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:51:03,165 INFO L225 Difference]: With dead ends: 5716 [2020-10-13 09:51:03,165 INFO L226 Difference]: Without dead ends: 2852 [2020-10-13 09:51:03,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:51:03,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2020-10-13 09:51:03,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 2848. [2020-10-13 09:51:03,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2848 states. [2020-10-13 09:51:03,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 4326 transitions. [2020-10-13 09:51:03,248 INFO L78 Accepts]: Start accepts. Automaton has 2848 states and 4326 transitions. Word has length 179 [2020-10-13 09:51:03,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:51:03,249 INFO L479 AbstractCegarLoop]: Abstraction has 2848 states and 4326 transitions. [2020-10-13 09:51:03,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:51:03,249 INFO L276 IsEmpty]: Start isEmpty. Operand 2848 states and 4326 transitions. [2020-10-13 09:51:03,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-13 09:51:03,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:51:03,253 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:51:03,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:51:03,254 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:51:03,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:51:03,254 INFO L82 PathProgramCache]: Analyzing trace with hash 273750323, now seen corresponding path program 1 times [2020-10-13 09:51:03,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:51:03,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816645171] [2020-10-13 09:51:03,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:51:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:03,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:03,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:03,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:04,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:05,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:05,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-13 09:51:05,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:51:05,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2538 [2020-10-13 09:51:05,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:05,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:51:05,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 09:51:05,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 09:51:05,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:05,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:51:05,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:05,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:05,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:05,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:51:05,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:05,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 09:51:05,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:05,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:05,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:05,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:05,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:05,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:51:05,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:05,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:06,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:06,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 09:51:06,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:06,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 09:51:06,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:06,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:51:06,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:06,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:51:06,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:06,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-13 09:51:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:06,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:06,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:06,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:06,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:51:06,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:51:06,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-13 09:51:06,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:06,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:51:06,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:51:06,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 09:51:06,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:06,428 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:51:06,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816645171] [2020-10-13 09:51:06,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:51:06,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:51:06,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385339106] [2020-10-13 09:51:06,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:51:06,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:51:06,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:51:06,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:51:06,433 INFO L87 Difference]: Start difference. First operand 2848 states and 4326 transitions. Second operand 6 states. [2020-10-13 09:51:12,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:51:12,775 INFO L93 Difference]: Finished difference Result 5727 states and 8704 transitions. [2020-10-13 09:51:12,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:51:12,782 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 188 [2020-10-13 09:51:12,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:51:12,798 INFO L225 Difference]: With dead ends: 5727 [2020-10-13 09:51:12,798 INFO L226 Difference]: Without dead ends: 2867 [2020-10-13 09:51:12,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 09:51:12,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2867 states. [2020-10-13 09:51:12,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2867 to 2848. [2020-10-13 09:51:12,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2848 states. [2020-10-13 09:51:12,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 4323 transitions. [2020-10-13 09:51:12,882 INFO L78 Accepts]: Start accepts. Automaton has 2848 states and 4323 transitions. Word has length 188 [2020-10-13 09:51:12,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:51:12,883 INFO L479 AbstractCegarLoop]: Abstraction has 2848 states and 4323 transitions. [2020-10-13 09:51:12,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:51:12,883 INFO L276 IsEmpty]: Start isEmpty. Operand 2848 states and 4323 transitions. [2020-10-13 09:51:12,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-13 09:51:12,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:51:12,887 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:51:12,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:51:12,888 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:51:12,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:51:12,888 INFO L82 PathProgramCache]: Analyzing trace with hash -750828273, now seen corresponding path program 1 times [2020-10-13 09:51:12,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:51:12,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017300593] [2020-10-13 09:51:12,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:51:12,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:12,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:13,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:13,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:13,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-13 09:51:13,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:51:13,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 848 [2020-10-13 09:51:13,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:13,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:51:13,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-13 09:51:13,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 09:51:13,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:13,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:51:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:13,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:13,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:13,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:51:13,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:13,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:51:13,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:13,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:13,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:13,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:13,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:13,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:51:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:13,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:13,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:13,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:51:13,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:13,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 09:51:13,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:13,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:13,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:13,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:13,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:51:13,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 09:51:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:13,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:13,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:13,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:51:13,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:13,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 09:51:13,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:13,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:51:13,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:13,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:51:13,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:51:13,999 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-13 09:51:13,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017300593] [2020-10-13 09:51:14,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:51:14,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:51:14,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113993768] [2020-10-13 09:51:14,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:51:14,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:51:14,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:51:14,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:51:14,004 INFO L87 Difference]: Start difference. First operand 2848 states and 4323 transitions. Second operand 5 states. [2020-10-13 09:51:22,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:51:22,098 INFO L93 Difference]: Finished difference Result 8535 states and 13099 transitions. [2020-10-13 09:51:22,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:51:22,100 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2020-10-13 09:51:22,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:51:22,124 INFO L225 Difference]: With dead ends: 8535 [2020-10-13 09:51:22,124 INFO L226 Difference]: Without dead ends: 5693 [2020-10-13 09:51:22,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:51:22,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5693 states. [2020-10-13 09:51:22,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5693 to 5689. [2020-10-13 09:51:22,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5689 states. [2020-10-13 09:51:22,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5689 states to 5689 states and 7892 transitions. [2020-10-13 09:51:22,275 INFO L78 Accepts]: Start accepts. Automaton has 5689 states and 7892 transitions. Word has length 190 [2020-10-13 09:51:22,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:51:22,275 INFO L479 AbstractCegarLoop]: Abstraction has 5689 states and 7892 transitions. [2020-10-13 09:51:22,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:51:22,276 INFO L276 IsEmpty]: Start isEmpty. Operand 5689 states and 7892 transitions. [2020-10-13 09:51:22,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-13 09:51:22,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:51:22,280 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:51:22,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:51:22,280 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:51:22,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:51:22,280 INFO L82 PathProgramCache]: Analyzing trace with hash 939961414, now seen corresponding path program 1 times [2020-10-13 09:51:22,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:51:22,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920189551] [2020-10-13 09:51:22,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:51:22,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:22,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:22,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:22,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:24,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:24,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-13 09:51:24,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:51:24,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2202 [2020-10-13 09:51:24,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:24,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:51:24,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-13 09:51:24,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 09:51:24,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:51:24,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:51:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:24,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:24,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:24,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:51:24,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:24,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:51:24,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:24,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:24,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:24,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:24,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:24,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:51:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:24,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:24,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:24,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:51:24,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:24,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:51:24,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:24,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:24,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:24,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:24,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:24,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 09:51:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:24,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:24,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:24,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:51:24,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:24,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 09:51:24,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:24,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:51:24,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:24,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 09:51:24,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:24,789 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-13 09:51:24,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920189551] [2020-10-13 09:51:24,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:51:24,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:51:24,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108695522] [2020-10-13 09:51:24,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:51:24,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:51:24,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:51:24,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:51:24,793 INFO L87 Difference]: Start difference. First operand 5689 states and 7892 transitions. Second operand 5 states. [2020-10-13 09:51:38,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:51:38,197 INFO L93 Difference]: Finished difference Result 16340 states and 23167 transitions. [2020-10-13 09:51:38,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:51:38,198 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-10-13 09:51:38,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:51:38,240 INFO L225 Difference]: With dead ends: 16340 [2020-10-13 09:51:38,240 INFO L226 Difference]: Without dead ends: 10657 [2020-10-13 09:51:38,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:51:38,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10657 states. [2020-10-13 09:51:38,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10657 to 10653. [2020-10-13 09:51:38,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10653 states. [2020-10-13 09:51:38,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10653 states to 10653 states and 14080 transitions. [2020-10-13 09:51:38,513 INFO L78 Accepts]: Start accepts. Automaton has 10653 states and 14080 transitions. Word has length 191 [2020-10-13 09:51:38,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:51:38,513 INFO L479 AbstractCegarLoop]: Abstraction has 10653 states and 14080 transitions. [2020-10-13 09:51:38,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:51:38,514 INFO L276 IsEmpty]: Start isEmpty. Operand 10653 states and 14080 transitions. [2020-10-13 09:51:38,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-13 09:51:38,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:51:38,521 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:51:38,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:51:38,522 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:51:38,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:51:38,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1127799110, now seen corresponding path program 1 times [2020-10-13 09:51:38,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:51:38,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72106085] [2020-10-13 09:51:38,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:51:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:38,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:38,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:39,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:39,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:39,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-13 09:51:39,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:51:39,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 935 [2020-10-13 09:51:39,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:39,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:51:39,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 184 [2020-10-13 09:51:39,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 09:51:39,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:51:39,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:51:39,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:39,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:39,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:39,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:51:39,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:39,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:51:39,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:39,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:39,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:39,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:39,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:39,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:51:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:39,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:39,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:39,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-13 09:51:39,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:39,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 09:51:39,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:39,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:51:39,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:39,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-13 09:51:39,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:39,898 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:51:39,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72106085] [2020-10-13 09:51:39,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:51:39,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:51:39,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735991519] [2020-10-13 09:51:39,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:51:39,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:51:39,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:51:39,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:51:39,901 INFO L87 Difference]: Start difference. First operand 10653 states and 14080 transitions. Second operand 5 states. [2020-10-13 09:51:49,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:51:49,007 INFO L93 Difference]: Finished difference Result 31217 states and 42149 transitions. [2020-10-13 09:51:49,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:51:49,013 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 203 [2020-10-13 09:51:49,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:51:49,075 INFO L225 Difference]: With dead ends: 31217 [2020-10-13 09:51:49,075 INFO L226 Difference]: Without dead ends: 20570 [2020-10-13 09:51:49,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:51:49,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20570 states. [2020-10-13 09:51:49,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20570 to 20566. [2020-10-13 09:51:49,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20566 states. [2020-10-13 09:51:49,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20566 states to 20566 states and 26403 transitions. [2020-10-13 09:51:49,530 INFO L78 Accepts]: Start accepts. Automaton has 20566 states and 26403 transitions. Word has length 203 [2020-10-13 09:51:49,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:51:49,531 INFO L479 AbstractCegarLoop]: Abstraction has 20566 states and 26403 transitions. [2020-10-13 09:51:49,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:51:49,531 INFO L276 IsEmpty]: Start isEmpty. Operand 20566 states and 26403 transitions. [2020-10-13 09:51:49,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-13 09:51:49,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:51:49,546 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:51:49,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:51:49,546 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:51:49,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:51:49,547 INFO L82 PathProgramCache]: Analyzing trace with hash 460067035, now seen corresponding path program 1 times [2020-10-13 09:51:49,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:51:49,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221526996] [2020-10-13 09:51:49,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:51:49,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:49,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:49,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:50,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:51,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:52,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:52,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-10-13 09:51:52,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:51:52,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3374 [2020-10-13 09:51:52,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:52,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:51:52,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 311 [2020-10-13 09:51:52,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 09:51:52,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:53,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:51:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:53,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:53,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:53,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:51:53,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:53,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:51:53,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:53,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:53,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:53,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:53,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:51:53,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:51:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:53,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:53,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:53,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 09:51:53,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:53,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:51:53,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:53,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:53,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:53,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:53,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:53,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-13 09:51:53,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:53,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:53,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:53,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-13 09:51:53,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:53,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-13 09:51:53,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:53,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:51:53,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:53,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-13 09:51:53,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:53,578 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-13 09:51:53,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221526996] [2020-10-13 09:51:53,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:51:53,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:51:53,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115582179] [2020-10-13 09:51:53,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:51:53,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:51:53,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:51:53,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:51:53,581 INFO L87 Difference]: Start difference. First operand 20566 states and 26403 transitions. Second operand 5 states. [2020-10-13 09:52:02,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:52:02,432 INFO L93 Difference]: Finished difference Result 49635 states and 65569 transitions. [2020-10-13 09:52:02,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:52:02,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 328 [2020-10-13 09:52:02,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:52:02,531 INFO L225 Difference]: With dead ends: 49635 [2020-10-13 09:52:02,532 INFO L226 Difference]: Without dead ends: 29075 [2020-10-13 09:52:02,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:52:02,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29075 states. [2020-10-13 09:52:03,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29075 to 29071. [2020-10-13 09:52:03,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29071 states. [2020-10-13 09:52:03,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29071 states to 29071 states and 36646 transitions. [2020-10-13 09:52:03,125 INFO L78 Accepts]: Start accepts. Automaton has 29071 states and 36646 transitions. Word has length 328 [2020-10-13 09:52:03,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:52:03,126 INFO L479 AbstractCegarLoop]: Abstraction has 29071 states and 36646 transitions. [2020-10-13 09:52:03,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:52:03,126 INFO L276 IsEmpty]: Start isEmpty. Operand 29071 states and 36646 transitions. [2020-10-13 09:52:03,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2020-10-13 09:52:03,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:52:03,148 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:52:03,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:52:03,148 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:52:03,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:52:03,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1388944769, now seen corresponding path program 1 times [2020-10-13 09:52:03,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:52:03,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287630852] [2020-10-13 09:52:03,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:52:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:03,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:03,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:04,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:04,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:05,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:08,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:08,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 396 [2020-10-13 09:52:08,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:52:08,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-13 09:52:08,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:08,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:52:08,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 367 [2020-10-13 09:52:08,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 09:52:08,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:52:08,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:52:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:08,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:08,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:08,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:52:08,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:08,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:52:08,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:08,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:08,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:08,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:08,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:52:08,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:52:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:08,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:08,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:08,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:52:08,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:08,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 09:52:08,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:08,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:08,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:08,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:08,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:08,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 09:52:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:08,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:08,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:08,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:52:08,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:08,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 09:52:08,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:08,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:08,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:08,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:08,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:08,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-13 09:52:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:08,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:08,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:08,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-13 09:52:08,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:08,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-13 09:52:08,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:08,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:52:08,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:08,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-13 09:52:08,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:52:08,869 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 69 proven. 3 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-13 09:52:08,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287630852] [2020-10-13 09:52:08,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:52:08,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:52:08,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604313606] [2020-10-13 09:52:08,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:52:08,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:52:08,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:52:08,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:52:08,880 INFO L87 Difference]: Start difference. First operand 29071 states and 36646 transitions. Second operand 5 states. [2020-10-13 09:52:15,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:52:15,913 INFO L93 Difference]: Finished difference Result 58149 states and 73369 transitions. [2020-10-13 09:52:15,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:52:15,919 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 382 [2020-10-13 09:52:15,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:52:15,992 INFO L225 Difference]: With dead ends: 58149 [2020-10-13 09:52:15,992 INFO L226 Difference]: Without dead ends: 29075 [2020-10-13 09:52:16,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:52:16,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29075 states. [2020-10-13 09:52:16,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29075 to 29071. [2020-10-13 09:52:16,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29071 states. [2020-10-13 09:52:16,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29071 states to 29071 states and 36628 transitions. [2020-10-13 09:52:16,466 INFO L78 Accepts]: Start accepts. Automaton has 29071 states and 36628 transitions. Word has length 382 [2020-10-13 09:52:16,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:52:16,466 INFO L479 AbstractCegarLoop]: Abstraction has 29071 states and 36628 transitions. [2020-10-13 09:52:16,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:52:16,467 INFO L276 IsEmpty]: Start isEmpty. Operand 29071 states and 36628 transitions. [2020-10-13 09:52:16,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2020-10-13 09:52:16,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:52:16,492 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:52:16,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:52:16,492 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:52:16,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:52:16,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1318482365, now seen corresponding path program 1 times [2020-10-13 09:52:16,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:52:16,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784687616] [2020-10-13 09:52:16,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:52:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:16,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:17,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:18,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:18,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 432 [2020-10-13 09:52:18,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:52:18,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2176 [2020-10-13 09:52:18,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:18,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:52:18,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 400 [2020-10-13 09:52:18,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 09:52:18,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:18,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:52:18,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:18,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:18,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:18,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:52:18,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:18,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:52:18,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:18,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:18,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:18,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:18,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:18,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:52:18,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:18,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:19,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:19,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 394 [2020-10-13 09:52:19,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:19,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-13 09:52:19,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:19,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:52:19,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:19,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 385 [2020-10-13 09:52:19,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:19,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:52:19,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:19,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:19,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:19,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 09:52:19,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:19,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 09:52:19,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:19,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:52:19,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:19,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-13 09:52:19,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:19,489 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:52:19,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784687616] [2020-10-13 09:52:19,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:52:19,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:52:19,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324298829] [2020-10-13 09:52:19,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:52:19,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:52:19,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:52:19,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:52:19,492 INFO L87 Difference]: Start difference. First operand 29071 states and 36628 transitions. Second operand 5 states. [2020-10-13 09:52:32,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:52:32,325 INFO L93 Difference]: Finished difference Result 69460 states and 88873 transitions. [2020-10-13 09:52:32,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:52:32,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 420 [2020-10-13 09:52:32,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:52:32,463 INFO L225 Difference]: With dead ends: 69460 [2020-10-13 09:52:32,464 INFO L226 Difference]: Without dead ends: 40395 [2020-10-13 09:52:32,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:52:32,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40395 states. [2020-10-13 09:52:33,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40395 to 40391. [2020-10-13 09:52:33,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40391 states. [2020-10-13 09:52:34,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40391 states to 40391 states and 49642 transitions. [2020-10-13 09:52:34,023 INFO L78 Accepts]: Start accepts. Automaton has 40391 states and 49642 transitions. Word has length 420 [2020-10-13 09:52:34,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:52:34,024 INFO L479 AbstractCegarLoop]: Abstraction has 40391 states and 49642 transitions. [2020-10-13 09:52:34,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:52:34,024 INFO L276 IsEmpty]: Start isEmpty. Operand 40391 states and 49642 transitions. [2020-10-13 09:52:34,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2020-10-13 09:52:34,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:52:34,048 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:52:34,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:52:34,048 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:52:34,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:52:34,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1450959133, now seen corresponding path program 1 times [2020-10-13 09:52:34,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:52:34,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771233632] [2020-10-13 09:52:34,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:52:34,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:34,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:34,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:34,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:35,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:39,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:39,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 436 [2020-10-13 09:52:39,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:52:39,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 09:52:39,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:39,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:52:39,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 407 [2020-10-13 09:52:39,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 09:52:39,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:39,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:52:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:39,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:39,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:39,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:52:39,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:39,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:52:39,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:39,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:39,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:39,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:39,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:39,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:52:39,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:39,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:39,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:39,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:52:39,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:39,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 09:52:39,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:39,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:39,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:39,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:39,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:39,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 09:52:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:39,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:39,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:39,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:52:39,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:39,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 09:52:39,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:39,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:39,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:39,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:39,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:39,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-13 09:52:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:39,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:39,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:39,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-13 09:52:39,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:39,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-13 09:52:39,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:39,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:52:39,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:39,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-13 09:52:39,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:39,757 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 69 proven. 3 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2020-10-13 09:52:39,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771233632] [2020-10-13 09:52:39,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:52:39,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:52:39,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506935709] [2020-10-13 09:52:39,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:52:39,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:52:39,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:52:39,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:52:39,761 INFO L87 Difference]: Start difference. First operand 40391 states and 49642 transitions. Second operand 5 states. [2020-10-13 09:52:51,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:52:51,749 INFO L93 Difference]: Finished difference Result 100598 states and 126267 transitions. [2020-10-13 09:52:51,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:52:51,751 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 422 [2020-10-13 09:52:51,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:52:51,891 INFO L225 Difference]: With dead ends: 100598 [2020-10-13 09:52:51,891 INFO L226 Difference]: Without dead ends: 60213 [2020-10-13 09:52:51,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:52:51,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60213 states. [2020-10-13 09:52:52,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60213 to 60209. [2020-10-13 09:52:52,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60209 states. [2020-10-13 09:52:52,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60209 states to 60209 states and 73152 transitions. [2020-10-13 09:52:52,806 INFO L78 Accepts]: Start accepts. Automaton has 60209 states and 73152 transitions. Word has length 422 [2020-10-13 09:52:52,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:52:52,807 INFO L479 AbstractCegarLoop]: Abstraction has 60209 states and 73152 transitions. [2020-10-13 09:52:52,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:52:52,807 INFO L276 IsEmpty]: Start isEmpty. Operand 60209 states and 73152 transitions. [2020-10-13 09:52:52,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2020-10-13 09:52:52,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:52:52,874 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:52:52,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:52:52,874 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:52:52,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:52:52,875 INFO L82 PathProgramCache]: Analyzing trace with hash 726467641, now seen corresponding path program 1 times [2020-10-13 09:52:52,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:52:52,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158705804] [2020-10-13 09:52:52,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:52:52,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:52,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:53,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:54,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:57,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:57,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 675 [2020-10-13 09:52:57,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:52:57,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4402 [2020-10-13 09:52:57,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:57,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:52:57,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-13 09:52:57,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 09:52:57,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:57,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:52:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:57,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:57,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:57,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:52:57,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:57,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:52:57,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:57,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:57,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:57,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:57,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:57,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:52:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:57,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:57,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:57,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 09:52:57,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:57,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 09:52:57,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:57,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:52:57,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:57,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-13 09:52:57,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:57,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-13 09:52:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:57,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:57,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:58,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:58,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 487 [2020-10-13 09:52:58,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:52:58,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1023 [2020-10-13 09:52:58,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:58,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:52:58,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:52:58,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 487 [2020-10-13 09:52:58,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:59,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:52:59,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:59,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:59,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:59,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-13 09:52:59,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:59,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 09:52:59,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:59,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:52:59,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:59,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-13 09:52:59,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:02,288 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:53:02,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158705804] [2020-10-13 09:53:02,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:53:02,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:53:02,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283002027] [2020-10-13 09:53:02,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:53:02,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:53:02,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:53:02,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:53:02,290 INFO L87 Difference]: Start difference. First operand 60209 states and 73152 transitions. Second operand 6 states. [2020-10-13 09:53:14,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:53:14,057 INFO L93 Difference]: Finished difference Result 120469 states and 146452 transitions. [2020-10-13 09:53:14,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:53:14,059 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 661 [2020-10-13 09:53:14,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:53:14,233 INFO L225 Difference]: With dead ends: 120469 [2020-10-13 09:53:14,234 INFO L226 Difference]: Without dead ends: 60238 [2020-10-13 09:53:14,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 09:53:14,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60238 states. [2020-10-13 09:53:15,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60238 to 60209. [2020-10-13 09:53:15,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60209 states. [2020-10-13 09:53:15,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60209 states to 60209 states and 73121 transitions. [2020-10-13 09:53:15,635 INFO L78 Accepts]: Start accepts. Automaton has 60209 states and 73121 transitions. Word has length 661 [2020-10-13 09:53:15,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:53:15,636 INFO L479 AbstractCegarLoop]: Abstraction has 60209 states and 73121 transitions. [2020-10-13 09:53:15,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:53:15,636 INFO L276 IsEmpty]: Start isEmpty. Operand 60209 states and 73121 transitions. [2020-10-13 09:53:15,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2020-10-13 09:53:15,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:53:15,692 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:53:15,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:53:15,693 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:53:15,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:53:15,694 INFO L82 PathProgramCache]: Analyzing trace with hash 196285284, now seen corresponding path program 1 times [2020-10-13 09:53:15,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:53:15,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336217542] [2020-10-13 09:53:15,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:53:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:15,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:15,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:17,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:17,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:18,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:18,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:20,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:20,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 679 [2020-10-13 09:53:20,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:53:20,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 09:53:20,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:20,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:53:20,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 647 [2020-10-13 09:53:20,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 09:53:20,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:20,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:53:20,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:20,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:20,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:20,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:53:20,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:20,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:53:20,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:20,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:53:20,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:20,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:53:20,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:20,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:53:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:20,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:20,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:20,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:53:20,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:20,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 09:53:20,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:20,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:53:20,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:20,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:53:20,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:20,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 09:53:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:21,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:21,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:21,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:53:21,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:21,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 09:53:21,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:21,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:53:21,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:21,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:53:21,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:21,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-13 09:53:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:21,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:21,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:21,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 478 [2020-10-13 09:53:21,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:21,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-13 09:53:21,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:21,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:53:21,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:21,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 469 [2020-10-13 09:53:21,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:21,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:53:21,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:21,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:21,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:21,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-13 09:53:21,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:21,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 09:53:21,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:21,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:53:21,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:21,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-13 09:53:21,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:21,946 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 69 proven. 3 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-13 09:53:21,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336217542] [2020-10-13 09:53:21,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:53:21,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:53:21,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506061024] [2020-10-13 09:53:21,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:53:21,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:53:21,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:53:21,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:53:21,950 INFO L87 Difference]: Start difference. First operand 60209 states and 73121 transitions. Second operand 5 states. [2020-10-13 09:53:31,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:53:31,681 INFO L93 Difference]: Finished difference Result 120436 states and 146368 transitions. [2020-10-13 09:53:31,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:53:31,683 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 663 [2020-10-13 09:53:31,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:53:31,847 INFO L225 Difference]: With dead ends: 120436 [2020-10-13 09:53:31,847 INFO L226 Difference]: Without dead ends: 60213 [2020-10-13 09:53:31,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:53:31,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60213 states. [2020-10-13 09:53:32,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60213 to 60209. [2020-10-13 09:53:32,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60209 states. [2020-10-13 09:53:32,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60209 states to 60209 states and 73105 transitions. [2020-10-13 09:53:32,577 INFO L78 Accepts]: Start accepts. Automaton has 60209 states and 73105 transitions. Word has length 663 [2020-10-13 09:53:32,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:53:32,578 INFO L479 AbstractCegarLoop]: Abstraction has 60209 states and 73105 transitions. [2020-10-13 09:53:32,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:53:32,579 INFO L276 IsEmpty]: Start isEmpty. Operand 60209 states and 73105 transitions. [2020-10-13 09:53:32,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2020-10-13 09:53:32,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:53:32,618 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:53:32,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:53:32,618 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:53:32,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:53:32,619 INFO L82 PathProgramCache]: Analyzing trace with hash 743789445, now seen corresponding path program 1 times [2020-10-13 09:53:32,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:53:32,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925533717] [2020-10-13 09:53:32,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:53:32,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:32,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:33,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:35,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:38,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:38,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 677 [2020-10-13 09:53:38,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:53:38,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6220 [2020-10-13 09:53:38,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:38,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:53:38,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 642 [2020-10-13 09:53:38,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 09:53:38,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:39,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:53:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:39,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:39,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:39,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:53:39,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:39,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:53:39,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:39,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:53:39,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:39,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:53:39,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:39,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:53:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:39,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:39,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:39,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 639 [2020-10-13 09:53:39,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:39,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-13 09:53:39,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:39,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:53:39,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:39,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 627 [2020-10-13 09:53:39,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:39,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:53:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:39,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:39,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:39,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 351 [2020-10-13 09:53:39,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:39,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-13 09:53:39,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:39,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:53:39,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:39,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 342 [2020-10-13 09:53:39,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:39,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:53:39,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:39,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:39,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:39,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 09:53:39,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:39,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 09:53:39,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:39,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:53:39,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:39,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 09:53:39,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:40,222 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:53:40,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925533717] [2020-10-13 09:53:40,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:53:40,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:53:40,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659030660] [2020-10-13 09:53:40,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:53:40,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:53:40,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:53:40,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:53:40,224 INFO L87 Difference]: Start difference. First operand 60209 states and 73105 transitions. Second operand 5 states. [2020-10-13 09:53:53,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:53:53,666 INFO L93 Difference]: Finished difference Result 138111 states and 170816 transitions. [2020-10-13 09:53:53,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:53:53,667 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 663 [2020-10-13 09:53:53,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:53:53,845 INFO L225 Difference]: With dead ends: 138111 [2020-10-13 09:53:53,845 INFO L226 Difference]: Without dead ends: 77908 [2020-10-13 09:53:53,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:53:53,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77908 states. [2020-10-13 09:53:54,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77908 to 73688. [2020-10-13 09:53:54,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73688 states. [2020-10-13 09:53:54,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73688 states to 73688 states and 92377 transitions. [2020-10-13 09:53:54,832 INFO L78 Accepts]: Start accepts. Automaton has 73688 states and 92377 transitions. Word has length 663 [2020-10-13 09:53:54,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:53:54,833 INFO L479 AbstractCegarLoop]: Abstraction has 73688 states and 92377 transitions. [2020-10-13 09:53:54,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:53:54,833 INFO L276 IsEmpty]: Start isEmpty. Operand 73688 states and 92377 transitions. [2020-10-13 09:53:54,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2020-10-13 09:53:54,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:53:54,887 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:53:54,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:53:54,888 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:53:54,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:53:54,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1062349450, now seen corresponding path program 1 times [2020-10-13 09:53:54,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:53:54,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741508633] [2020-10-13 09:53:54,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:53:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:54,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:55,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:56,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:58,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:58,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:59,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:59,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 688 [2020-10-13 09:53:59,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:53:59,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-13 09:53:59,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:59,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:53:59,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:53:59,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:53:59,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:00,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:54:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:00,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:00,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:00,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:54:00,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:00,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:54:00,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:00,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:54:00,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:54:00,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:54:00,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:00,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:54:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:00,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:00,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:00,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:54:00,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:00,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 09:54:00,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:00,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:54:00,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:54:00,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:54:00,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:00,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 09:54:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:00,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:00,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:00,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:54:00,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:00,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:54:00,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:00,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:54:00,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 09:54:00,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:54:00,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:00,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-13 09:54:00,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:00,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:00,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:00,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 487 [2020-10-13 09:54:00,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:00,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-13 09:54:00,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:00,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:54:00,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 484 [2020-10-13 09:54:00,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:54:00,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:00,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:54:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:00,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:00,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:00,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-13 09:54:00,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:00,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 09:54:00,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:00,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:54:00,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:54:00,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:54:00,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0