/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_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:48:23,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:48:23,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:48:23,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:48:23,908 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:48:23,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:48:23,918 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:48:23,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:48:23,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:48:23,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:48:23,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:48:23,928 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:48:23,928 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:48:23,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:48:23,933 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:48:23,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:48:23,936 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:48:23,937 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:48:23,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:48:23,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:48:23,948 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:48:23,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:48:23,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:48:23,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:48:23,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:48:23,963 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:48:23,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:48:23,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:48:23,974 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:48:23,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:48:23,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:48:23,976 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:48:23,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:48:23,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:48:23,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:48:23,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:48:23,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:48:23,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:48:23,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:48:23,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:48:23,981 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:48:23,982 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 09:48:24,004 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:48:24,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:48:24,005 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:48:24,006 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:48:24,006 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:48:24,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:48:24,006 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:48:24,006 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:48:24,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:48:24,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:48:24,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:48:24,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:48:24,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:48:24,007 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:48:24,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:48:24,008 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:48:24,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:48:24,008 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:48:24,008 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:48:24,009 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:48:24,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:48:24,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:48:24,009 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:48:24,009 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:48:24,010 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:48:24,010 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:48:24,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:48:24,010 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:48:24,010 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:48:24,011 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 09:48:24,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:48:24,310 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:48:24,313 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:48:24,315 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:48:24,315 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:48:24,316 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label24.c [2020-10-13 09:48:24,375 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10ddd3af4/987f5f69d01c449aa6371fcc1d6695a0/FLAG9d9fe036f [2020-10-13 09:48:25,079 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:48:25,080 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label24.c [2020-10-13 09:48:25,114 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10ddd3af4/987f5f69d01c449aa6371fcc1d6695a0/FLAG9d9fe036f [2020-10-13 09:48:25,238 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10ddd3af4/987f5f69d01c449aa6371fcc1d6695a0 [2020-10-13 09:48:25,247 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:48:25,249 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:48:25,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:48:25,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:48:25,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:48:25,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:48:25" (1/1) ... [2020-10-13 09:48:25,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6317371b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:48:25, skipping insertion in model container [2020-10-13 09:48:25,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:48:25" (1/1) ... [2020-10-13 09:48:25,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:48:25,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:48:26,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:48:26,783 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:48:27,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:48:27,267 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:48:27,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:48:27 WrapperNode [2020-10-13 09:48:27,268 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:48:27,269 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:48:27,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:48:27,270 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:48:27,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:48:27" (1/1) ... [2020-10-13 09:48:27,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:48:27" (1/1) ... [2020-10-13 09:48:27,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:48:27" (1/1) ... [2020-10-13 09:48:27,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:48:27" (1/1) ... [2020-10-13 09:48:27,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:48:27" (1/1) ... [2020-10-13 09:48:27,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:48:27" (1/1) ... [2020-10-13 09:48:27,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:48:27" (1/1) ... [2020-10-13 09:48:27,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:48:27,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:48:27,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:48:27,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:48:27,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:48:27" (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 09:48:27,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:48:27,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:48:27,637 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:48:27,637 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:48:27,638 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 09:48:27,638 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:48:27,638 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:48:27,638 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:48:27,639 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 09:48:27,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:48:27,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:48:27,639 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:48:27,639 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:48:27,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:48:27,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:48:33,785 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:48:33,785 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:48:33,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:48:33 BoogieIcfgContainer [2020-10-13 09:48:33,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:48:33,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:48:33,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:48:33,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:48:33,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:48:25" (1/3) ... [2020-10-13 09:48:33,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7620ec9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:48:33, skipping insertion in model container [2020-10-13 09:48:33,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:48:27" (2/3) ... [2020-10-13 09:48:33,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7620ec9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:48:33, skipping insertion in model container [2020-10-13 09:48:33,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:48:33" (3/3) ... [2020-10-13 09:48:33,806 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label24.c [2020-10-13 09:48:33,818 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:48:33,828 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:48:33,845 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:48:33,876 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:48:33,876 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:48:33,876 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:48:33,876 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:48:33,876 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:48:33,877 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:48:33,877 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:48:33,877 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:48:33,922 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-13 09:48:33,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 09:48:33,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:48:33,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:48:33,935 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:48:33,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:48:33,944 INFO L82 PathProgramCache]: Analyzing trace with hash -990352286, now seen corresponding path program 1 times [2020-10-13 09:48:33,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:48:33,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348085427] [2020-10-13 09:48:33,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:48:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:34,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:34,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:34,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 09:48:34,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:34,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 362 [2020-10-13 09:48:34,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:34,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:48:34,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:48:34,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 09:48:34,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 09:48:34,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:48:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:34,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:34,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:34,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:48:34,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:34,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 09:48:34,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:34,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:48:34,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:34,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:48:34,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:34,670 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 09:48:34,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348085427] [2020-10-13 09:48:34,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:48:34,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 09:48:34,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013383913] [2020-10-13 09:48:34,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:48:34,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:48:34,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:48:34,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:48:34,701 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 5 states. [2020-10-13 09:48:45,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:48:45,969 INFO L93 Difference]: Finished difference Result 2984 states and 5769 transitions. [2020-10-13 09:48:45,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:48:45,972 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-10-13 09:48:45,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:48:46,016 INFO L225 Difference]: With dead ends: 2984 [2020-10-13 09:48:46,017 INFO L226 Difference]: Without dead ends: 2142 [2020-10-13 09:48:46,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:48:46,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2020-10-13 09:48:46,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2135. [2020-10-13 09:48:46,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2135 states. [2020-10-13 09:48:46,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 3571 transitions. [2020-10-13 09:48:46,204 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 3571 transitions. Word has length 57 [2020-10-13 09:48:46,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:48:46,206 INFO L479 AbstractCegarLoop]: Abstraction has 2135 states and 3571 transitions. [2020-10-13 09:48:46,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:48:46,207 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 3571 transitions. [2020-10-13 09:48:46,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 09:48:46,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:48:46,221 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 09:48:46,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:48:46,222 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:48:46,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:48:46,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1220501035, now seen corresponding path program 1 times [2020-10-13 09:48:46,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:48:46,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216943201] [2020-10-13 09:48:46,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:48:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:46,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:46,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:47,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:47,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 09:48:47,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:48:47,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 790 [2020-10-13 09:48:47,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:47,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:48:47,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 09:48:47,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 09:48:47,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:48:47,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:48:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:47,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:47,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:47,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:48:47,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:47,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:48:47,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:47,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:47,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:47,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:47,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:47,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:48:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:47,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:47,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:47,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:48:47,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:47,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 09:48:47,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:47,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:48:47,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:47,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:48:47,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:47,250 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:48:47,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216943201] [2020-10-13 09:48:47,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:48:47,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:48:47,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716267879] [2020-10-13 09:48:47,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:48:47,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:48:47,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:48:47,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:48:47,254 INFO L87 Difference]: Start difference. First operand 2135 states and 3571 transitions. Second operand 5 states. [2020-10-13 09:48:55,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:48:55,463 INFO L93 Difference]: Finished difference Result 6400 states and 10794 transitions. [2020-10-13 09:48:55,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:48:55,469 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-13 09:48:55,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:48:55,495 INFO L225 Difference]: With dead ends: 6400 [2020-10-13 09:48:55,495 INFO L226 Difference]: Without dead ends: 4271 [2020-10-13 09:48:55,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 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 09:48:55,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4271 states. [2020-10-13 09:48:55,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4271 to 4267. [2020-10-13 09:48:55,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4267 states. [2020-10-13 09:48:55,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4267 states to 4267 states and 6375 transitions. [2020-10-13 09:48:55,695 INFO L78 Accepts]: Start accepts. Automaton has 4267 states and 6375 transitions. Word has length 128 [2020-10-13 09:48:55,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:48:55,696 INFO L479 AbstractCegarLoop]: Abstraction has 4267 states and 6375 transitions. [2020-10-13 09:48:55,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:48:55,696 INFO L276 IsEmpty]: Start isEmpty. Operand 4267 states and 6375 transitions. [2020-10-13 09:48:55,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-13 09:48:55,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:48:55,701 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 09:48:55,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:48:55,702 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:48:55,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:48:55,703 INFO L82 PathProgramCache]: Analyzing trace with hash -335890806, now seen corresponding path program 1 times [2020-10-13 09:48:55,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:48:55,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923505311] [2020-10-13 09:48:55,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:48:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:55,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:55,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:56,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:56,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 09:48:56,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:48:56,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 733 [2020-10-13 09:48:56,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:56,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:48:56,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 09:48:56,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 09:48:56,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:56,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:48:56,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:56,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:56,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:56,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:48:56,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:56,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:48:56,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:56,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:56,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:56,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:56,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:56,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:48:56,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:56,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:56,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:56,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:48:56,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:56,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 09:48:56,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:56,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:48:56,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:56,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 09:48:56,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:56,692 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:48:56,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923505311] [2020-10-13 09:48:56,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:48:56,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:48:56,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552743129] [2020-10-13 09:48:56,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:48:56,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:48:56,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:48:56,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:48:56,695 INFO L87 Difference]: Start difference. First operand 4267 states and 6375 transitions. Second operand 5 states. [2020-10-13 09:49:06,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:49:06,075 INFO L93 Difference]: Finished difference Result 11371 states and 17418 transitions. [2020-10-13 09:49:06,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:49:06,076 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-13 09:49:06,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:49:06,114 INFO L225 Difference]: With dead ends: 11371 [2020-10-13 09:49:06,114 INFO L226 Difference]: Without dead ends: 7110 [2020-10-13 09:49:06,127 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 09:49:06,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7110 states. [2020-10-13 09:49:06,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7110 to 7106. [2020-10-13 09:49:06,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7106 states. [2020-10-13 09:49:06,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7106 states to 7106 states and 9845 transitions. [2020-10-13 09:49:06,295 INFO L78 Accepts]: Start accepts. Automaton has 7106 states and 9845 transitions. Word has length 129 [2020-10-13 09:49:06,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:49:06,296 INFO L479 AbstractCegarLoop]: Abstraction has 7106 states and 9845 transitions. [2020-10-13 09:49:06,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:49:06,296 INFO L276 IsEmpty]: Start isEmpty. Operand 7106 states and 9845 transitions. [2020-10-13 09:49:06,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-13 09:49:06,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:49:06,299 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:49:06,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:49:06,300 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:49:06,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:49:06,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1233377745, now seen corresponding path program 1 times [2020-10-13 09:49:06,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:49:06,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770123962] [2020-10-13 09:49:06,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:49:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:06,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:06,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:07,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:07,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 09:49:07,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:49:07,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 833 [2020-10-13 09:49:07,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:07,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:49:07,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-13 09:49:07,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 09:49:07,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:49:07,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:49:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:07,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:07,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:07,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:49:07,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:07,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:49:07,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:07,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:07,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:07,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:07,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:49:07,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:49:07,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:07,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:07,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:07,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 09:49:07,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:07,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 09:49:07,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:07,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:49:07,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:07,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 09:49:07,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:07,463 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:49:07,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770123962] [2020-10-13 09:49:07,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:49:07,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:49:07,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564654011] [2020-10-13 09:49:07,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:49:07,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:49:07,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:49:07,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:49:07,468 INFO L87 Difference]: Start difference. First operand 7106 states and 9845 transitions. Second operand 6 states. [2020-10-13 09:49:19,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:49:19,804 INFO L93 Difference]: Finished difference Result 19875 states and 28164 transitions. [2020-10-13 09:49:19,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:49:19,805 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2020-10-13 09:49:19,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:49:19,872 INFO L225 Difference]: With dead ends: 19875 [2020-10-13 09:49:19,873 INFO L226 Difference]: Without dead ends: 12775 [2020-10-13 09:49:19,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:49:19,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12775 states. [2020-10-13 09:49:20,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12775 to 12771. [2020-10-13 09:49:20,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12771 states. [2020-10-13 09:49:20,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12771 states to 12771 states and 17603 transitions. [2020-10-13 09:49:20,254 INFO L78 Accepts]: Start accepts. Automaton has 12771 states and 17603 transitions. Word has length 146 [2020-10-13 09:49:20,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:49:20,256 INFO L479 AbstractCegarLoop]: Abstraction has 12771 states and 17603 transitions. [2020-10-13 09:49:20,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:49:20,256 INFO L276 IsEmpty]: Start isEmpty. Operand 12771 states and 17603 transitions. [2020-10-13 09:49:20,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-13 09:49:20,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:49:20,261 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:49:20,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:49:20,262 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:49:20,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:49:20,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1621179014, now seen corresponding path program 1 times [2020-10-13 09:49:20,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:49:20,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064108658] [2020-10-13 09:49:20,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:49:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:20,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:20,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:21,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:22,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:22,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-13 09:49:22,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:49:22,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1725 [2020-10-13 09:49:22,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:22,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:49:22,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-13 09:49:22,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:49:22,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:49:22,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:49:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:22,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:22,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:22,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:49:22,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:22,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:49:22,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:22,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:22,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:22,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:22,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:22,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:49:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:22,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:22,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:22,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:49:22,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:22,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-13 09:49:22,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:22,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:49:22,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:22,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-13 09:49:22,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:22,448 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:49:22,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064108658] [2020-10-13 09:49:22,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:49:22,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:49:22,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276014089] [2020-10-13 09:49:22,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:49:22,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:49:22,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:49:22,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:49:22,451 INFO L87 Difference]: Start difference. First operand 12771 states and 17603 transitions. Second operand 5 states. [2020-10-13 09:49:28,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:49:28,031 INFO L93 Difference]: Finished difference Result 25562 states and 35268 transitions. [2020-10-13 09:49:28,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:49:28,035 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 207 [2020-10-13 09:49:28,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:49:28,080 INFO L225 Difference]: With dead ends: 25562 [2020-10-13 09:49:28,081 INFO L226 Difference]: Without dead ends: 12775 [2020-10-13 09:49:28,107 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 09:49:28,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12775 states. [2020-10-13 09:49:28,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12775 to 12771. [2020-10-13 09:49:28,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12771 states. [2020-10-13 09:49:28,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12771 states to 12771 states and 17591 transitions. [2020-10-13 09:49:28,438 INFO L78 Accepts]: Start accepts. Automaton has 12771 states and 17591 transitions. Word has length 207 [2020-10-13 09:49:28,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:49:28,439 INFO L479 AbstractCegarLoop]: Abstraction has 12771 states and 17591 transitions. [2020-10-13 09:49:28,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:49:28,439 INFO L276 IsEmpty]: Start isEmpty. Operand 12771 states and 17591 transitions. [2020-10-13 09:49:28,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-13 09:49:28,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:49:28,445 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:49:28,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:49:28,446 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:49:28,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:49:28,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1725965798, now seen corresponding path program 1 times [2020-10-13 09:49:28,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:49:28,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671168651] [2020-10-13 09:49:28,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:49:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:28,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:28,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:28,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:30,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:30,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:33,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:33,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-13 09:49:33,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:49:33,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 09:49:33,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:33,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:49:33,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 176 [2020-10-13 09:49:33,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 09:49:33,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:33,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:49:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:33,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:33,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:33,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:49:33,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:33,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:49:33,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:33,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:33,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:33,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:33,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:33,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:49:33,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:33,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:33,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:33,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:49:33,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:33,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 09:49:33,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:33,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:33,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:33,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:33,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:49:33,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 09:49:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:33,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:33,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:33,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 09:49:33,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:33,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 09:49:33,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:33,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:49:33,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:33,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-13 09:49:33,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:49:33,974 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-13 09:49:33,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671168651] [2020-10-13 09:49:33,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:49:33,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:49:33,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227558229] [2020-10-13 09:49:33,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:49:33,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:49:33,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:49:33,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:49:33,981 INFO L87 Difference]: Start difference. First operand 12771 states and 17591 transitions. Second operand 5 states. [2020-10-13 09:49:47,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:49:47,056 INFO L93 Difference]: Finished difference Result 25572 states and 35248 transitions. [2020-10-13 09:49:47,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:49:47,058 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 221 [2020-10-13 09:49:47,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:49:47,108 INFO L225 Difference]: With dead ends: 25572 [2020-10-13 09:49:47,108 INFO L226 Difference]: Without dead ends: 12775 [2020-10-13 09:49:47,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 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 09:49:47,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12775 states. [2020-10-13 09:49:47,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12775 to 12771. [2020-10-13 09:49:47,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12771 states. [2020-10-13 09:49:47,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12771 states to 12771 states and 17584 transitions. [2020-10-13 09:49:47,412 INFO L78 Accepts]: Start accepts. Automaton has 12771 states and 17584 transitions. Word has length 221 [2020-10-13 09:49:47,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:49:47,412 INFO L479 AbstractCegarLoop]: Abstraction has 12771 states and 17584 transitions. [2020-10-13 09:49:47,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:49:47,413 INFO L276 IsEmpty]: Start isEmpty. Operand 12771 states and 17584 transitions. [2020-10-13 09:49:47,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-13 09:49:47,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:49:47,423 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:49:47,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:49:47,424 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:49:47,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:49:47,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1376437726, now seen corresponding path program 1 times [2020-10-13 09:49:47,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:49:47,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092045499] [2020-10-13 09:49:47,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:49:47,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:47,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:47,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:47,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:48,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:51,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:52,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:52,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-13 09:49:52,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:49:52,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 09:49:52,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:52,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:49:52,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 276 [2020-10-13 09:49:52,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 09:49:52,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:52,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:49:52,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:52,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:52,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:52,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:49:52,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:52,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:49:52,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:52,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:52,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:52,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:52,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:52,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:49:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:52,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:52,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:52,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:49:52,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:52,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:49:52,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:52,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:52,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:52,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:52,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:52,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 09:49:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:52,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:52,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:52,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-13 09:49:52,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:52,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-13 09:49:52,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:52,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:49:52,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:52,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-13 09:49:52,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:53,059 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-13 09:49:53,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092045499] [2020-10-13 09:49:53,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:49:53,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:49:53,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058652011] [2020-10-13 09:49:53,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:49:53,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:49:53,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:49:53,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:49:53,064 INFO L87 Difference]: Start difference. First operand 12771 states and 17584 transitions. Second operand 5 states. [2020-10-13 09:50:00,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:50:00,115 INFO L93 Difference]: Finished difference Result 25549 states and 35212 transitions. [2020-10-13 09:50:00,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:50:00,121 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 321 [2020-10-13 09:50:00,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:50:00,167 INFO L225 Difference]: With dead ends: 25549 [2020-10-13 09:50:00,167 INFO L226 Difference]: Without dead ends: 12775 [2020-10-13 09:50:00,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 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 09:50:00,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12775 states. [2020-10-13 09:50:00,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12775 to 12771. [2020-10-13 09:50:00,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12771 states. [2020-10-13 09:50:00,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12771 states to 12771 states and 17576 transitions. [2020-10-13 09:50:00,433 INFO L78 Accepts]: Start accepts. Automaton has 12771 states and 17576 transitions. Word has length 321 [2020-10-13 09:50:00,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:50:00,434 INFO L479 AbstractCegarLoop]: Abstraction has 12771 states and 17576 transitions. [2020-10-13 09:50:00,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:50:00,434 INFO L276 IsEmpty]: Start isEmpty. Operand 12771 states and 17576 transitions. [2020-10-13 09:50:00,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-10-13 09:50:00,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:50:00,451 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:50:00,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:50:00,452 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:50:00,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:50:00,453 INFO L82 PathProgramCache]: Analyzing trace with hash 2053473123, now seen corresponding path program 1 times [2020-10-13 09:50:00,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:50:00,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450021356] [2020-10-13 09:50:00,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:50:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:00,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:00,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:00,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:04,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:04,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 352 [2020-10-13 09:50:04,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:50:04,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4133 [2020-10-13 09:50:04,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:04,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:50:04,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 09:50:04,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 09:50:04,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:04,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:50:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:04,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:04,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:04,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:50:04,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:04,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:50:04,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:04,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:50:04,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:04,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:50:04,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:04,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:50:04,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:04,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:04,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:04,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:50:04,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:04,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 09:50:04,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:04,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:50:04,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:04,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 09:50:04,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:04,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 09:50:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:04,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:04,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:05,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:05,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-13 09:50:05,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:50:05,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 898 [2020-10-13 09:50:05,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:05,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:50:05,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:50:05,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-13 09:50:05,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:06,283 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2020-10-13 09:50:06,462 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-13 09:50:06,661 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-13 09:50:07,512 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:50:07,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450021356] [2020-10-13 09:50:07,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:50:07,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 09:50:07,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510882551] [2020-10-13 09:50:07,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 09:50:07,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:50:07,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 09:50:07,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:50:07,514 INFO L87 Difference]: Start difference. First operand 12771 states and 17576 transitions. Second operand 10 states. [2020-10-13 09:50:08,882 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 42 [2020-10-13 09:50:09,026 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 45 [2020-10-13 09:50:09,902 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 42 [2020-10-13 09:50:10,327 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2020-10-13 09:50:20,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:50:20,587 INFO L93 Difference]: Finished difference Result 26618 states and 37408 transitions. [2020-10-13 09:50:20,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 09:50:20,589 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 340 [2020-10-13 09:50:20,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:50:20,637 INFO L225 Difference]: With dead ends: 26618 [2020-10-13 09:50:20,637 INFO L226 Difference]: Without dead ends: 13671 [2020-10-13 09:50:20,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2020-10-13 09:50:20,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13671 states. [2020-10-13 09:50:20,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13671 to 12894. [2020-10-13 09:50:20,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12894 states. [2020-10-13 09:50:20,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12894 states to 12894 states and 15783 transitions. [2020-10-13 09:50:20,926 INFO L78 Accepts]: Start accepts. Automaton has 12894 states and 15783 transitions. Word has length 340 [2020-10-13 09:50:20,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:50:20,927 INFO L479 AbstractCegarLoop]: Abstraction has 12894 states and 15783 transitions. [2020-10-13 09:50:20,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 09:50:20,927 INFO L276 IsEmpty]: Start isEmpty. Operand 12894 states and 15783 transitions. [2020-10-13 09:50:20,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2020-10-13 09:50:20,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:50:20,948 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:50:20,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:50:20,948 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:50:20,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:50:20,949 INFO L82 PathProgramCache]: Analyzing trace with hash -511542497, now seen corresponding path program 1 times [2020-10-13 09:50:20,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:50:20,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323504466] [2020-10-13 09:50:20,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:50:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:21,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:21,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:21,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:23,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:23,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-10-13 09:50:23,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:50:23,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2199 [2020-10-13 09:50:23,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:23,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:50:23,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 09:50:23,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 09:50:23,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:23,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:50:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:23,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:23,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:23,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:50:23,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:23,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:50:23,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:23,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:50:23,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:23,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:50:23,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:23,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:50:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:23,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:23,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:23,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 09:50:23,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:23,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 09:50:23,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:23,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:50:23,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:23,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:50:23,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:23,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-13 09:50:23,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:23,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:23,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:23,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:23,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-13 09:50:23,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:50:23,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-13 09:50:23,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:23,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:50:23,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:50:23,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-13 09:50:23,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:24,671 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 185 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:50:24,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323504466] [2020-10-13 09:50:24,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:50:24,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:50:24,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694579788] [2020-10-13 09:50:24,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:50:24,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:50:24,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:50:24,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:50:24,674 INFO L87 Difference]: Start difference. First operand 12894 states and 15783 transitions. Second operand 7 states. [2020-10-13 09:50:32,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:50:32,437 INFO L93 Difference]: Finished difference Result 25866 states and 31837 transitions. [2020-10-13 09:50:32,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 09:50:32,438 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 358 [2020-10-13 09:50:32,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:50:32,472 INFO L225 Difference]: With dead ends: 25866 [2020-10-13 09:50:32,472 INFO L226 Difference]: Without dead ends: 12960 [2020-10-13 09:50:32,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:50:32,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12960 states. [2020-10-13 09:50:32,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12960 to 12933. [2020-10-13 09:50:32,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12933 states. [2020-10-13 09:50:32,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12933 states to 12933 states and 15871 transitions. [2020-10-13 09:50:32,717 INFO L78 Accepts]: Start accepts. Automaton has 12933 states and 15871 transitions. Word has length 358 [2020-10-13 09:50:32,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:50:32,717 INFO L479 AbstractCegarLoop]: Abstraction has 12933 states and 15871 transitions. [2020-10-13 09:50:32,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:50:32,718 INFO L276 IsEmpty]: Start isEmpty. Operand 12933 states and 15871 transitions. [2020-10-13 09:50:32,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2020-10-13 09:50:32,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:50:32,730 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:50:32,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:50:32,731 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:50:32,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:50:32,731 INFO L82 PathProgramCache]: Analyzing trace with hash -256129606, now seen corresponding path program 1 times [2020-10-13 09:50:32,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:50:32,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281028921] [2020-10-13 09:50:32,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:50:32,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:32,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:32,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:33,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:33,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-10-13 09:50:33,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:50:33,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1092 [2020-10-13 09:50:33,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:33,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:50:33,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:50:33,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 09:50:33,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:33,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:50:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:33,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:33,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:33,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:50:33,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:33,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:50:33,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:33,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:50:33,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:33,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:50:33,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:33,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:50:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:33,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:34,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:34,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 09:50:34,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:34,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 09:50:34,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:34,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:50:34,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:50:34,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 09:50:34,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:34,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 09:50:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:34,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:34,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:34,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-13 09:50:34,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:34,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 09:50:34,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:34,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:50:34,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 211 [2020-10-13 09:50:34,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:50:34,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:34,387 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 100 proven. 84 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 09:50:34,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281028921] [2020-10-13 09:50:34,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:50:34,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:50:34,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886215505] [2020-10-13 09:50:34,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:50:34,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:50:34,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:50:34,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:50:34,389 INFO L87 Difference]: Start difference. First operand 12933 states and 15871 transitions. Second operand 7 states. [2020-10-13 09:50:41,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:50:41,778 INFO L93 Difference]: Finished difference Result 28195 states and 35528 transitions. [2020-10-13 09:50:41,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 09:50:41,780 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 359 [2020-10-13 09:50:41,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:50:41,823 INFO L225 Difference]: With dead ends: 28195 [2020-10-13 09:50:41,823 INFO L226 Difference]: Without dead ends: 15268 [2020-10-13 09:50:41,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:50:41,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15268 states. [2020-10-13 09:50:42,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15268 to 15194. [2020-10-13 09:50:42,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15194 states. [2020-10-13 09:50:42,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15194 states to 15194 states and 18261 transitions. [2020-10-13 09:50:42,120 INFO L78 Accepts]: Start accepts. Automaton has 15194 states and 18261 transitions. Word has length 359 [2020-10-13 09:50:42,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:50:42,121 INFO L479 AbstractCegarLoop]: Abstraction has 15194 states and 18261 transitions. [2020-10-13 09:50:42,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:50:42,121 INFO L276 IsEmpty]: Start isEmpty. Operand 15194 states and 18261 transitions. [2020-10-13 09:50:42,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-10-13 09:50:42,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:50:42,133 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:50:42,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:50:42,133 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:50:42,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:50:42,134 INFO L82 PathProgramCache]: Analyzing trace with hash 2077726350, now seen corresponding path program 1 times [2020-10-13 09:50:42,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:50:42,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80026902] [2020-10-13 09:50:42,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:50:42,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:42,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:42,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:42,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:44,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:44,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 377 [2020-10-13 09:50:44,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:50:44,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1823 [2020-10-13 09:50:44,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:44,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:50:44,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 09:50:44,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 09:50:44,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:44,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:50:44,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:44,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:44,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:44,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:50:44,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:44,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:50:44,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:44,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:50:44,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:44,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:50:44,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:44,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:50:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:44,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:44,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:44,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:50:44,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:44,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 09:50:44,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:44,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:50:44,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:44,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 09:50:44,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:44,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 09:50:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:44,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:44,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:44,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:44,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-13 09:50:44,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:50:44,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 639 [2020-10-13 09:50:44,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:44,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:50:44,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:50:44,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-13 09:50:44,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:50:46,148 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:50:46,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80026902] [2020-10-13 09:50:46,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:50:46,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:50:46,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083219982] [2020-10-13 09:50:46,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:50:46,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:50:46,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:50:46,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:50:46,151 INFO L87 Difference]: Start difference. First operand 15194 states and 18261 transitions. Second operand 6 states. [2020-10-13 09:50:54,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:50:54,124 INFO L93 Difference]: Finished difference Result 30426 states and 36662 transitions. [2020-10-13 09:50:54,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:50:54,126 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 365 [2020-10-13 09:50:54,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:50:54,167 INFO L225 Difference]: With dead ends: 30426 [2020-10-13 09:50:54,167 INFO L226 Difference]: Without dead ends: 15219 [2020-10-13 09:50:54,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 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 09:50:54,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15219 states. [2020-10-13 09:50:54,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15219 to 15194. [2020-10-13 09:50:54,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15194 states. [2020-10-13 09:50:54,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15194 states to 15194 states and 18246 transitions. [2020-10-13 09:50:54,441 INFO L78 Accepts]: Start accepts. Automaton has 15194 states and 18246 transitions. Word has length 365 [2020-10-13 09:50:54,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:50:54,442 INFO L479 AbstractCegarLoop]: Abstraction has 15194 states and 18246 transitions. [2020-10-13 09:50:54,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:50:54,442 INFO L276 IsEmpty]: Start isEmpty. Operand 15194 states and 18246 transitions. [2020-10-13 09:50:54,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-10-13 09:50:54,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:50:54,452 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:50:54,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:50:54,452 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:50:54,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:50:54,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1105055301, now seen corresponding path program 1 times [2020-10-13 09:50:54,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:50:54,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351262009] [2020-10-13 09:50:54,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:50:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:54,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:54,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:57,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:57,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 404 [2020-10-13 09:50:57,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:50:57,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2897 [2020-10-13 09:50:57,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:57,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:50:57,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:50:57,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-13 09:50:57,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:50:57,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:50:57,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:57,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:57,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:57,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:50:57,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:57,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:50:57,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:57,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:50:57,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:57,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:50:57,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:50:57,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:50:57,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:57,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:57,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:57,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:50:57,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:57,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-13 09:50:57,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:57,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:50:57,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:50:57,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 09:50:57,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:50:58,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:50:58,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:58,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:58,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:58,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-13 09:50:58,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:58,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 09:50:58,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:58,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:50:58,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 211 [2020-10-13 09:50:58,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:50:58,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:58,527 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 100 proven. 117 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 09:50:58,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351262009] [2020-10-13 09:50:58,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:50:58,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:50:58,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571974893] [2020-10-13 09:50:58,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:50:58,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:50:58,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:50:58,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:50:58,530 INFO L87 Difference]: Start difference. First operand 15194 states and 18246 transitions. Second operand 7 states. [2020-10-13 09:51:07,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:51:07,868 INFO L93 Difference]: Finished difference Result 32580 states and 39183 transitions. [2020-10-13 09:51:07,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:51:07,870 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 392 [2020-10-13 09:51:07,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:51:07,912 INFO L225 Difference]: With dead ends: 32580 [2020-10-13 09:51:07,912 INFO L226 Difference]: Without dead ends: 17392 [2020-10-13 09:51:07,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:51:07,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17392 states. [2020-10-13 09:51:08,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17392 to 17361. [2020-10-13 09:51:08,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17361 states. [2020-10-13 09:51:08,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17361 states to 17361 states and 20586 transitions. [2020-10-13 09:51:08,181 INFO L78 Accepts]: Start accepts. Automaton has 17361 states and 20586 transitions. Word has length 392 [2020-10-13 09:51:08,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:51:08,181 INFO L479 AbstractCegarLoop]: Abstraction has 17361 states and 20586 transitions. [2020-10-13 09:51:08,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:51:08,182 INFO L276 IsEmpty]: Start isEmpty. Operand 17361 states and 20586 transitions. [2020-10-13 09:51:08,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2020-10-13 09:51:08,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:51:08,189 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:51:08,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:51:08,190 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:51:08,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:51:08,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1357994489, now seen corresponding path program 1 times [2020-10-13 09:51:08,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:51:08,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301427125] [2020-10-13 09:51:08,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:51:08,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:08,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:08,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:09,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:10,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:10,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 414 [2020-10-13 09:51:10,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:51:10,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2228 [2020-10-13 09:51:10,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:10,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:51:10,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:51:10,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-13 09:51:10,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:10,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:51:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:10,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:10,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:10,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:51:10,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:10,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:51:10,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:10,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:51:10,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:10,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:51:10,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:10,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:51:10,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:10,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:10,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:10,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 09:51:10,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:10,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-13 09:51:10,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:10,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:51:10,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:51:10,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-13 09:51:10,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:10,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-13 09:51:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:10,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:10,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:10,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-13 09:51:10,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:10,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 09:51:10,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:10,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:10,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 211 [2020-10-13 09:51:10,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:10,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:11,100 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 100 proven. 127 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 09:51:11,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301427125] [2020-10-13 09:51:11,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:51:11,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:51:11,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776111121] [2020-10-13 09:51:11,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:51:11,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:51:11,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:51:11,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:51:11,103 INFO L87 Difference]: Start difference. First operand 17361 states and 20586 transitions. Second operand 8 states. [2020-10-13 09:51:23,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:51:23,901 INFO L93 Difference]: Finished difference Result 37706 states and 45906 transitions. [2020-10-13 09:51:23,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 09:51:23,903 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 402 [2020-10-13 09:51:23,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:51:23,941 INFO L225 Difference]: With dead ends: 37706 [2020-10-13 09:51:23,941 INFO L226 Difference]: Without dead ends: 21763 [2020-10-13 09:51:23,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 09:51:23,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21763 states. [2020-10-13 09:51:24,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21763 to 20296. [2020-10-13 09:51:24,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20296 states. [2020-10-13 09:51:24,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20296 states to 20296 states and 22814 transitions. [2020-10-13 09:51:24,252 INFO L78 Accepts]: Start accepts. Automaton has 20296 states and 22814 transitions. Word has length 402 [2020-10-13 09:51:24,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:51:24,252 INFO L479 AbstractCegarLoop]: Abstraction has 20296 states and 22814 transitions. [2020-10-13 09:51:24,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:51:24,252 INFO L276 IsEmpty]: Start isEmpty. Operand 20296 states and 22814 transitions. [2020-10-13 09:51:24,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1227 [2020-10-13 09:51:24,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:51:24,272 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:51:24,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:51:24,272 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:51:24,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:51:24,273 INFO L82 PathProgramCache]: Analyzing trace with hash -2012250895, now seen corresponding path program 1 times [2020-10-13 09:51:24,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:51:24,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944281387] [2020-10-13 09:51:24,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:51:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:24,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:24,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:28,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:28,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1248 [2020-10-13 09:51:28,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:51:28,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4188 [2020-10-13 09:51:28,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:28,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:51:28,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-13 09:51:28,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-13 09:51:28,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:28,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:51:28,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:28,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:28,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:28,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:51:28,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:28,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:51:28,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:28,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:28,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:28,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:28,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:28,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:51:28,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:28,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:29,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:29,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-13 09:51:29,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:29,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-13 09:51:29,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:29,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:29,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:29,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:29,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:29,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:51:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:29,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:29,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:29,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-13 09:51:29,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:29,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 09:51:29,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:29,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:29,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:29,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:29,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:29,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:51:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:29,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:29,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:29,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 09:51:29,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:29,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:51:29,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:29,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:29,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:29,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:29,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:29,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-13 09:51:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:29,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:29,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:29,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-13 09:51:29,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:29,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-13 09:51:29,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:29,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:51:29,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:29,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-13 09:51:29,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:29,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:51:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:29,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:29,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:29,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 09:51:29,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:29,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:51:29,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:29,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:51:29,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:29,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 09:51:29,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:29,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-13 09:51:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:29,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:29,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:29,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:51:29,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:29,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 09:51:29,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:29,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:51:29,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:51:29,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 09:51:29,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:29,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2020-10-13 09:51:29,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:29,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:29,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:29,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-13 09:51:29,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:29,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 09:51:29,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:29,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:29,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 211 [2020-10-13 09:51:29,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:29,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:30,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1299 backedges. 454 proven. 121 refuted. 0 times theorem prover too weak. 724 trivial. 0 not checked. [2020-10-13 09:51:30,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944281387] [2020-10-13 09:51:30,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:51:30,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:51:30,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113499868] [2020-10-13 09:51:30,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:51:30,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:51:30,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:51:30,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:51:30,817 INFO L87 Difference]: Start difference. First operand 20296 states and 22814 transitions. Second operand 7 states. [2020-10-13 09:51:39,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:51:39,871 INFO L93 Difference]: Finished difference Result 47874 states and 55189 transitions. [2020-10-13 09:51:39,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 09:51:39,873 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1226 [2020-10-13 09:51:39,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:51:39,936 INFO L225 Difference]: With dead ends: 47874 [2020-10-13 09:51:39,936 INFO L226 Difference]: Without dead ends: 28996 [2020-10-13 09:51:39,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-13 09:51:39,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28996 states. [2020-10-13 09:51:40,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28996 to 28954. [2020-10-13 09:51:40,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28954 states. [2020-10-13 09:51:40,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28954 states to 28954 states and 32864 transitions. [2020-10-13 09:51:40,390 INFO L78 Accepts]: Start accepts. Automaton has 28954 states and 32864 transitions. Word has length 1226 [2020-10-13 09:51:40,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:51:40,392 INFO L479 AbstractCegarLoop]: Abstraction has 28954 states and 32864 transitions. [2020-10-13 09:51:40,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:51:40,393 INFO L276 IsEmpty]: Start isEmpty. Operand 28954 states and 32864 transitions. [2020-10-13 09:51:40,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1355 [2020-10-13 09:51:40,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:51:40,425 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:51:40,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:51:40,426 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:51:40,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:51:40,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1044291111, now seen corresponding path program 1 times [2020-10-13 09:51:40,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:51:40,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154807886] [2020-10-13 09:51:40,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:51:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:40,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:41,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:41,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:45,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:45,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1378 [2020-10-13 09:51:45,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:51:45,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-13 09:51:45,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:45,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:51:45,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 996 [2020-10-13 09:51:45,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:51:45,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:45,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:51:45,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:45,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:45,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:45,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:51:45,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:45,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:51:45,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:45,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:45,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:45,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:45,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:45,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:51:46,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:46,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:46,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:46,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-13 09:51:46,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:46,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 09:51:46,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:46,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:46,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:46,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:46,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:46,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:51:46,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:46,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:46,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:46,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-13 09:51:46,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:46,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 09:51:46,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:46,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:46,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:46,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:46,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:46,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:51:46,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:46,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:46,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:46,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 09:51:46,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:46,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:51:46,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:46,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:46,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:46,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:46,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:46,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-13 09:51:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:46,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:46,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:46,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-13 09:51:46,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:46,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 09:51:46,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:46,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:46,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:46,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:46,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:46,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:51:46,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:46,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:46,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:46,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 09:51:46,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:46,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 09:51:46,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:46,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:46,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:46,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:46,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:46,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-13 09:51:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:46,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:46,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:46,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 09:51:46,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:46,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 09:51:46,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:46,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:51:46,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:46,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-13 09:51:46,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:46,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 984 [2020-10-13 09:51:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:46,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:46,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:46,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 09:51:46,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:46,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 09:51:46,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:46,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:51:46,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:51:46,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-13 09:51:46,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:46,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1092 [2020-10-13 09:51:46,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:46,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:47,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:47,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-13 09:51:47,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:47,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-13 09:51:47,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:47,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:47,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 211 [2020-10-13 09:51:47,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:47,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:51:48,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1841 backedges. 587 proven. 107 refuted. 0 times theorem prover too weak. 1147 trivial. 0 not checked. [2020-10-13 09:51:48,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154807886] [2020-10-13 09:51:48,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:51:48,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:51:48,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685603689] [2020-10-13 09:51:48,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:51:48,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:51:48,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:51:48,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:51:48,574 INFO L87 Difference]: Start difference. First operand 28954 states and 32864 transitions. Second operand 7 states. [2020-10-13 09:52:01,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:52:01,817 INFO L93 Difference]: Finished difference Result 68756 states and 79775 transitions. [2020-10-13 09:52:01,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:52:01,818 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1354 [2020-10-13 09:52:01,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:52:01,902 INFO L225 Difference]: With dead ends: 68756 [2020-10-13 09:52:01,902 INFO L226 Difference]: Without dead ends: 41220 [2020-10-13 09:52:01,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:52:01,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41220 states. [2020-10-13 09:52:02,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41220 to 39774. [2020-10-13 09:52:02,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39774 states. [2020-10-13 09:52:02,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39774 states to 39774 states and 45078 transitions. [2020-10-13 09:52:02,712 INFO L78 Accepts]: Start accepts. Automaton has 39774 states and 45078 transitions. Word has length 1354 [2020-10-13 09:52:02,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:52:02,714 INFO L479 AbstractCegarLoop]: Abstraction has 39774 states and 45078 transitions. [2020-10-13 09:52:02,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:52:02,714 INFO L276 IsEmpty]: Start isEmpty. Operand 39774 states and 45078 transitions. [2020-10-13 09:52:02,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1446 [2020-10-13 09:52:02,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:52:02,750 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:52:02,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:52:02,750 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:52:02,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:52:02,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1878757924, now seen corresponding path program 1 times [2020-10-13 09:52:02,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:52:02,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392270936] [2020-10-13 09:52:02,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:52:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:03,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:03,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:03,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking...