/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_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:46:15,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:46:15,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:46:15,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:46:15,934 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:46:15,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:46:15,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:46:15,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:46:15,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:46:15,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:46:15,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:46:15,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:46:15,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:46:15,958 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:46:15,960 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:46:15,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:46:15,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:46:15,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:46:15,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:46:15,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:46:15,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:46:15,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:46:15,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:46:15,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:46:15,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:46:15,996 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:46:15,996 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:46:15,997 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:46:15,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:46:16,001 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:46:16,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:46:16,004 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:46:16,005 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:46:16,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:46:16,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:46:16,007 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:46:16,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:46:16,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:46:16,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:46:16,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:46:16,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:46:16,016 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 09:46:16,053 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:46:16,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:46:16,056 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:46:16,056 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:46:16,056 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:46:16,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:46:16,056 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:46:16,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:46:16,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:46:16,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:46:16,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:46:16,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:46:16,058 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:46:16,059 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:46:16,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:46:16,059 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:46:16,059 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:46:16,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:46:16,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:46:16,060 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:46:16,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:46:16,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:46:16,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:46:16,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:46:16,061 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:46:16,062 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:46:16,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:46:16,062 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:46:16,062 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:46:16,062 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 09:46:16,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:46:16,408 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:46:16,413 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:46:16,415 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:46:16,415 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:46:16,416 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label15.c [2020-10-13 09:46:16,477 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbc393b94/10214ed4963645f3890db9bb1beb5497/FLAGae756561f [2020-10-13 09:46:17,204 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:46:17,204 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label15.c [2020-10-13 09:46:17,227 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbc393b94/10214ed4963645f3890db9bb1beb5497/FLAGae756561f [2020-10-13 09:46:17,289 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbc393b94/10214ed4963645f3890db9bb1beb5497 [2020-10-13 09:46:17,300 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:46:17,302 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:46:17,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:46:17,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:46:17,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:46:17,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:46:17" (1/1) ... [2020-10-13 09:46:17,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ff28928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:46:17, skipping insertion in model container [2020-10-13 09:46:17,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:46:17" (1/1) ... [2020-10-13 09:46:17,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:46:17,431 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:46:18,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:46:18,934 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:46:19,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:46:19,475 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:46:19,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:46:19 WrapperNode [2020-10-13 09:46:19,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:46:19,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:46:19,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:46:19,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:46:19,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:46:19" (1/1) ... [2020-10-13 09:46:19,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:46:19" (1/1) ... [2020-10-13 09:46:19,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:46:19" (1/1) ... [2020-10-13 09:46:19,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:46:19" (1/1) ... [2020-10-13 09:46:19,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:46:19" (1/1) ... [2020-10-13 09:46:19,768 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:46:19" (1/1) ... [2020-10-13 09:46:19,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:46:19" (1/1) ... [2020-10-13 09:46:19,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:46:19,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:46:19,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:46:19,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:46:19,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:46:19" (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 09:46:19,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:46:19,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:46:19,919 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:46:19,919 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:46:19,919 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 09:46:19,920 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:46:19,920 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:46:19,921 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:46:19,921 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 09:46:19,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:46:19,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:46:19,922 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:46:19,922 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:46:19,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:46:19,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:46:26,324 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:46:26,325 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:46:26,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:46:26 BoogieIcfgContainer [2020-10-13 09:46:26,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:46:26,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:46:26,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:46:26,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:46:26,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:46:17" (1/3) ... [2020-10-13 09:46:26,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36251553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:46:26, skipping insertion in model container [2020-10-13 09:46:26,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:46:19" (2/3) ... [2020-10-13 09:46:26,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36251553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:46:26, skipping insertion in model container [2020-10-13 09:46:26,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:46:26" (3/3) ... [2020-10-13 09:46:26,348 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label15.c [2020-10-13 09:46:26,361 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:46:26,372 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:46:26,387 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:46:26,419 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:46:26,419 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:46:26,419 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:46:26,419 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:46:26,420 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:46:26,420 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:46:26,420 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:46:26,420 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:46:26,455 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-13 09:46:26,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 09:46:26,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:46:26,466 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] [2020-10-13 09:46:26,466 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:46:26,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:46:26,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1584923938, now seen corresponding path program 1 times [2020-10-13 09:46:26,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:46:26,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137392393] [2020-10-13 09:46:26,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:46:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:26,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:27,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:27,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 09:46:27,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:27,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-10-13 09:46:27,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:27,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:46:27,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:46:27,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 09:46:27,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:46:27,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:46:27,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:27,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:27,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:27,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:46:27,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:27,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 09:46:27,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:27,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:46:27,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:27,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:46:27,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:27,214 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 09:46:27,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137392393] [2020-10-13 09:46:27,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:46:27,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:46:27,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321262908] [2020-10-13 09:46:27,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:46:27,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:46:27,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:46:27,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:46:27,244 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2020-10-13 09:46:35,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:46:35,353 INFO L93 Difference]: Finished difference Result 2286 states and 4364 transitions. [2020-10-13 09:46:35,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:46:35,355 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-13 09:46:35,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:46:35,387 INFO L225 Difference]: With dead ends: 2286 [2020-10-13 09:46:35,387 INFO L226 Difference]: Without dead ends: 1432 [2020-10-13 09:46:35,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:46:35,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-13 09:46:35,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1428. [2020-10-13 09:46:35,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1428 states. [2020-10-13 09:46:35,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 2262 transitions. [2020-10-13 09:46:35,582 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 2262 transitions. Word has length 41 [2020-10-13 09:46:35,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:46:35,583 INFO L479 AbstractCegarLoop]: Abstraction has 1428 states and 2262 transitions. [2020-10-13 09:46:35,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:46:35,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 2262 transitions. [2020-10-13 09:46:35,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 09:46:35,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:46:35,594 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:46:35,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:46:35,595 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:46:35,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:46:35,595 INFO L82 PathProgramCache]: Analyzing trace with hash 898324231, now seen corresponding path program 1 times [2020-10-13 09:46:35,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:46:35,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143215693] [2020-10-13 09:46:35,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:46:35,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:35,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:36,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:36,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:36,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 09:46:36,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:46:36,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1132 [2020-10-13 09:46:36,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:36,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:46:36,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 09:46:36,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 09:46:36,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:46:36,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:46:36,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:36,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:36,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:36,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:46:36,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:36,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:46:36,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:36,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:36,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:36,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:36,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 09:46:36,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:46:36,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:36,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:37,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:37,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:46:37,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:37,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 09:46:37,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:37,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:46:37,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:37,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:46:37,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-13 09:46:37,109 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:46:37,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143215693] [2020-10-13 09:46:37,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:46:37,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:46:37,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124885608] [2020-10-13 09:46:37,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:46:37,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:46:37,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:46:37,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:46:37,114 INFO L87 Difference]: Start difference. First operand 1428 states and 2262 transitions. Second operand 5 states. [2020-10-13 09:46:44,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:46:44,830 INFO L93 Difference]: Finished difference Result 4274 states and 6822 transitions. [2020-10-13 09:46:44,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:46:44,831 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-13 09:46:44,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:46:44,849 INFO L225 Difference]: With dead ends: 4274 [2020-10-13 09:46:44,849 INFO L226 Difference]: Without dead ends: 2852 [2020-10-13 09:46:44,854 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 09:46:44,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2020-10-13 09:46:44,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 2848. [2020-10-13 09:46:44,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2848 states. [2020-10-13 09:46:44,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 4072 transitions. [2020-10-13 09:46:44,937 INFO L78 Accepts]: Start accepts. Automaton has 2848 states and 4072 transitions. Word has length 110 [2020-10-13 09:46:44,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:46:44,938 INFO L479 AbstractCegarLoop]: Abstraction has 2848 states and 4072 transitions. [2020-10-13 09:46:44,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:46:44,938 INFO L276 IsEmpty]: Start isEmpty. Operand 2848 states and 4072 transitions. [2020-10-13 09:46:44,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-13 09:46:44,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:46:44,944 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:46:44,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:46:44,944 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:46:44,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:46:44,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1043983998, now seen corresponding path program 1 times [2020-10-13 09:46:44,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:46:44,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756567725] [2020-10-13 09:46:44,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:46:44,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:45,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:45,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:45,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:45,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-13 09:46:45,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:46:45,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 853 [2020-10-13 09:46:45,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:45,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:46:45,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-13 09:46:45,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 09:46:45,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:45,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:46:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:45,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:45,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:45,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:46:45,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:45,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:46:45,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:45,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:45,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:45,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:45,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:45,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:46:46,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:46,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:46,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:46,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 09:46:46,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:46,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-13 09:46:46,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:46,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:46:46,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:46,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-13 09:46:46,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:46,225 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:46:46,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756567725] [2020-10-13 09:46:46,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:46:46,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:46:46,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629515741] [2020-10-13 09:46:46,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:46:46,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:46:46,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:46:46,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:46:46,228 INFO L87 Difference]: Start difference. First operand 2848 states and 4072 transitions. Second operand 6 states. [2020-10-13 09:46:56,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:46:56,835 INFO L93 Difference]: Finished difference Result 8534 states and 12820 transitions. [2020-10-13 09:46:56,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:46:56,836 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 173 [2020-10-13 09:46:56,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:46:56,868 INFO L225 Difference]: With dead ends: 8534 [2020-10-13 09:46:56,868 INFO L226 Difference]: Without dead ends: 5692 [2020-10-13 09:46:56,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:46:56,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5692 states. [2020-10-13 09:46:57,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5692 to 5688. [2020-10-13 09:46:57,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5688 states. [2020-10-13 09:46:57,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5688 states to 5688 states and 8240 transitions. [2020-10-13 09:46:57,056 INFO L78 Accepts]: Start accepts. Automaton has 5688 states and 8240 transitions. Word has length 173 [2020-10-13 09:46:57,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:46:57,058 INFO L479 AbstractCegarLoop]: Abstraction has 5688 states and 8240 transitions. [2020-10-13 09:46:57,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:46:57,059 INFO L276 IsEmpty]: Start isEmpty. Operand 5688 states and 8240 transitions. [2020-10-13 09:46:57,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-13 09:46:57,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:46:57,071 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:46:57,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:46:57,072 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:46:57,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:46:57,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1638786251, now seen corresponding path program 1 times [2020-10-13 09:46:57,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:46:57,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453139171] [2020-10-13 09:46:57,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:46:57,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:57,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:57,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:58,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:59,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:59,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 09:46:59,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:46:59,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2272 [2020-10-13 09:46:59,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:59,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:46:59,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-13 09:46:59,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 09:46:59,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:46:59,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:46:59,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:59,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:59,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:59,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:46:59,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:59,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:46:59,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:59,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:59,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:59,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:59,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:46:59,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:46:59,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:59,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:59,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:59,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:46:59,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:59,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 09:46:59,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:59,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:59,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:59,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:59,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:59,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 09:46:59,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:59,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:59,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:59,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:46:59,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:59,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 09:46:59,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:59,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:46:59,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:59,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 09:46:59,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:59,656 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 09:46:59,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453139171] [2020-10-13 09:46:59,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:46:59,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:46:59,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966372328] [2020-10-13 09:46:59,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:46:59,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:46:59,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:46:59,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:46:59,662 INFO L87 Difference]: Start difference. First operand 5688 states and 8240 transitions. Second operand 5 states. [2020-10-13 09:47:10,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:47:10,782 INFO L93 Difference]: Finished difference Result 17053 states and 25088 transitions. [2020-10-13 09:47:10,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:47:10,784 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-10-13 09:47:10,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:47:10,837 INFO L225 Difference]: With dead ends: 17053 [2020-10-13 09:47:10,838 INFO L226 Difference]: Without dead ends: 11371 [2020-10-13 09:47:10,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:47:10,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11371 states. [2020-10-13 09:47:11,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11371 to 11367. [2020-10-13 09:47:11,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11367 states. [2020-10-13 09:47:11,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11367 states to 11367 states and 15260 transitions. [2020-10-13 09:47:11,139 INFO L78 Accepts]: Start accepts. Automaton has 11367 states and 15260 transitions. Word has length 180 [2020-10-13 09:47:11,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:47:11,140 INFO L479 AbstractCegarLoop]: Abstraction has 11367 states and 15260 transitions. [2020-10-13 09:47:11,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:47:11,140 INFO L276 IsEmpty]: Start isEmpty. Operand 11367 states and 15260 transitions. [2020-10-13 09:47:11,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-13 09:47:11,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:47:11,145 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:47:11,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:47:11,146 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:47:11,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:47:11,146 INFO L82 PathProgramCache]: Analyzing trace with hash 968367126, now seen corresponding path program 1 times [2020-10-13 09:47:11,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:47:11,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959051825] [2020-10-13 09:47:11,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:47:11,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:11,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:11,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:12,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:12,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:14,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:14,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-13 09:47:14,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:47:14,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3067 [2020-10-13 09:47:14,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:14,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:47:14,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 176 [2020-10-13 09:47:14,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 09:47:14,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:14,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:47:14,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:14,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:14,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:14,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:47:14,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:14,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:47:14,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:14,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:14,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:14,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:14,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:14,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:47:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:14,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:14,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:14,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:47:14,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:14,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 09:47:14,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:14,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:14,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:14,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:14,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:14,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 09:47:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:14,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:14,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:14,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:47:14,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:14,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 09:47:14,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:14,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:47:14,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:14,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 09:47:14,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:14,676 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 09:47:14,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959051825] [2020-10-13 09:47:14,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:47:14,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:47:14,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958895178] [2020-10-13 09:47:14,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:47:14,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:47:14,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:47:14,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:47:14,679 INFO L87 Difference]: Start difference. First operand 11367 states and 15260 transitions. Second operand 5 states. [2020-10-13 09:47:20,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:47:20,829 INFO L93 Difference]: Finished difference Result 22751 states and 30578 transitions. [2020-10-13 09:47:20,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:47:20,833 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 205 [2020-10-13 09:47:20,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:47:20,880 INFO L225 Difference]: With dead ends: 22751 [2020-10-13 09:47:20,881 INFO L226 Difference]: Without dead ends: 11371 [2020-10-13 09:47:20,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:47:20,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11371 states. [2020-10-13 09:47:21,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11371 to 11367. [2020-10-13 09:47:21,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11367 states. [2020-10-13 09:47:21,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11367 states to 11367 states and 15252 transitions. [2020-10-13 09:47:21,229 INFO L78 Accepts]: Start accepts. Automaton has 11367 states and 15252 transitions. Word has length 205 [2020-10-13 09:47:21,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:47:21,230 INFO L479 AbstractCegarLoop]: Abstraction has 11367 states and 15252 transitions. [2020-10-13 09:47:21,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:47:21,230 INFO L276 IsEmpty]: Start isEmpty. Operand 11367 states and 15252 transitions. [2020-10-13 09:47:21,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-13 09:47:21,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:47:21,236 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:47:21,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:47:21,236 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:47:21,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:47:21,237 INFO L82 PathProgramCache]: Analyzing trace with hash -994102790, now seen corresponding path program 1 times [2020-10-13 09:47:21,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:47:21,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25105267] [2020-10-13 09:47:21,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:47:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:21,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:21,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:22,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:23,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:23,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-13 09:47:23,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:47:23,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2598 [2020-10-13 09:47:23,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:23,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:47:23,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-10-13 09:47:23,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 09:47:23,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:47:23,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:47:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:23,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:23,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:23,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:47:23,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:23,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:47:23,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:23,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:23,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:23,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:23,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:23,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:47:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:23,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:23,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:23,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 09:47:23,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:23,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 09:47:23,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:23,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:23,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:23,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:23,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:24,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 09:47:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:24,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:24,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:24,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:47:24,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:24,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 09:47:24,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:24,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:47:24,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:24,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 09:47:24,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:24,122 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 09:47:24,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25105267] [2020-10-13 09:47:24,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:47:24,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:47:24,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79990760] [2020-10-13 09:47:24,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:47:24,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:47:24,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:47:24,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:47:24,125 INFO L87 Difference]: Start difference. First operand 11367 states and 15252 transitions. Second operand 5 states. [2020-10-13 09:47:34,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:47:34,793 INFO L93 Difference]: Finished difference Result 34059 states and 46398 transitions. [2020-10-13 09:47:34,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:47:34,794 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 221 [2020-10-13 09:47:34,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:47:34,873 INFO L225 Difference]: With dead ends: 34059 [2020-10-13 09:47:34,873 INFO L226 Difference]: Without dead ends: 22698 [2020-10-13 09:47:34,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:47:34,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22698 states. [2020-10-13 09:47:35,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22698 to 22694. [2020-10-13 09:47:35,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22694 states. [2020-10-13 09:47:35,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22694 states to 22694 states and 28334 transitions. [2020-10-13 09:47:35,487 INFO L78 Accepts]: Start accepts. Automaton has 22694 states and 28334 transitions. Word has length 221 [2020-10-13 09:47:35,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:47:35,488 INFO L479 AbstractCegarLoop]: Abstraction has 22694 states and 28334 transitions. [2020-10-13 09:47:35,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:47:35,489 INFO L276 IsEmpty]: Start isEmpty. Operand 22694 states and 28334 transitions. [2020-10-13 09:47:35,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-13 09:47:35,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:47:35,500 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:47:35,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:47:35,501 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:47:35,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:47:35,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1022351629, now seen corresponding path program 1 times [2020-10-13 09:47:35,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:47:35,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960430245] [2020-10-13 09:47:35,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:47:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:35,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:35,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:36,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:37,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:37,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-13 09:47:37,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:47:37,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2127 [2020-10-13 09:47:37,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:37,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:47:37,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 203 [2020-10-13 09:47:37,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 09:47:37,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:47:37,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:47:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:37,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:37,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:37,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:47:37,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:37,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:47:37,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:37,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:37,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:37,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:37,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:37,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:47:37,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:37,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:37,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:37,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:47:37,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:37,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 09:47:37,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:37,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:37,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:37,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:37,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:38,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 09:47:38,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:38,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:38,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:38,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:47:38,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:38,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 09:47:38,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:38,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:47:38,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:38,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 09:47:38,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:47:38,769 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 09:47:38,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960430245] [2020-10-13 09:47:38,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:47:38,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:47:38,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344302914] [2020-10-13 09:47:38,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:47:38,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:47:38,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:47:38,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:47:38,773 INFO L87 Difference]: Start difference. First operand 22694 states and 28334 transitions. Second operand 5 states. [2020-10-13 09:47:48,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:47:48,150 INFO L93 Difference]: Finished difference Result 53897 states and 69173 transitions. [2020-10-13 09:47:48,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:47:48,151 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 232 [2020-10-13 09:47:48,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:47:48,254 INFO L225 Difference]: With dead ends: 53897 [2020-10-13 09:47:48,255 INFO L226 Difference]: Without dead ends: 31209 [2020-10-13 09:47:48,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:47:48,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31209 states. [2020-10-13 09:47:48,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31209 to 31205. [2020-10-13 09:47:48,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31205 states. [2020-10-13 09:47:48,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31205 states to 31205 states and 38788 transitions. [2020-10-13 09:47:48,799 INFO L78 Accepts]: Start accepts. Automaton has 31205 states and 38788 transitions. Word has length 232 [2020-10-13 09:47:48,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:47:48,800 INFO L479 AbstractCegarLoop]: Abstraction has 31205 states and 38788 transitions. [2020-10-13 09:47:48,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:47:48,800 INFO L276 IsEmpty]: Start isEmpty. Operand 31205 states and 38788 transitions. [2020-10-13 09:47:48,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-13 09:47:48,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:47:48,808 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:47:48,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:47:48,808 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:47:48,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:47:48,809 INFO L82 PathProgramCache]: Analyzing trace with hash 717320242, now seen corresponding path program 1 times [2020-10-13 09:47:48,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:47:48,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866274959] [2020-10-13 09:47:48,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:47:48,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:48,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:48,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:49,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:51,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:51,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-13 09:47:51,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:47:51,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2594 [2020-10-13 09:47:51,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:51,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:47:51,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 206 [2020-10-13 09:47:51,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 09:47:51,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:51,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:47:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:51,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:51,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:51,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:47:51,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:51,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:47:51,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:51,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:51,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:51,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:51,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:51,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:47:51,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:51,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:51,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:51,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:47:51,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:51,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:47:51,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:51,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:51,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:51,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:51,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:51,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 09:47:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:51,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:51,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:51,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 09:47:51,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:51,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 09:47:51,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:51,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:47:51,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:51,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-13 09:47:51,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:51,760 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 09:47:51,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866274959] [2020-10-13 09:47:51,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:47:51,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:47:51,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334572454] [2020-10-13 09:47:51,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:47:51,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:47:51,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:47:51,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:47:51,762 INFO L87 Difference]: Start difference. First operand 31205 states and 38788 transitions. Second operand 5 states. [2020-10-13 09:48:01,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:48:01,313 INFO L93 Difference]: Finished difference Result 72312 states and 92452 transitions. [2020-10-13 09:48:01,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:48:01,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 235 [2020-10-13 09:48:01,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:48:01,444 INFO L225 Difference]: With dead ends: 72312 [2020-10-13 09:48:01,444 INFO L226 Difference]: Without dead ends: 41113 [2020-10-13 09:48:01,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:48:01,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41113 states. [2020-10-13 09:48:02,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41113 to 41109. [2020-10-13 09:48:02,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41109 states. [2020-10-13 09:48:02,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41109 states to 41109 states and 52416 transitions. [2020-10-13 09:48:02,372 INFO L78 Accepts]: Start accepts. Automaton has 41109 states and 52416 transitions. Word has length 235 [2020-10-13 09:48:02,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:48:02,373 INFO L479 AbstractCegarLoop]: Abstraction has 41109 states and 52416 transitions. [2020-10-13 09:48:02,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:48:02,373 INFO L276 IsEmpty]: Start isEmpty. Operand 41109 states and 52416 transitions. [2020-10-13 09:48:02,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-10-13 09:48:02,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:48:02,392 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-13 09:48:02,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:48:02,392 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:48:02,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:48:02,393 INFO L82 PathProgramCache]: Analyzing trace with hash -753503882, now seen corresponding path program 1 times [2020-10-13 09:48:02,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:48:02,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296911280] [2020-10-13 09:48:02,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:48:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:02,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:02,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:02,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:03,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:07,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:07,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 355 [2020-10-13 09:48:07,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:48:07,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 09:48:07,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:07,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:48:07,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-13 09:48:07,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 09:48:07,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:07,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:48:07,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:07,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:07,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:07,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:48:07,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:07,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:48:07,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:07,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:07,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:07,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:07,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:48:07,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:48:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:07,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:07,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:07,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:48:07,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:07,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:48:07,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:07,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:07,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:07,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:07,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:07,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 09:48:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:07,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:07,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:07,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:48:07,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:07,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 09:48:07,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:07,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:48:07,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:07,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 09:48:07,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:07,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-13 09:48:07,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:07,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:07,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:08,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:08,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 09:48:08,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:48:08,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 487 [2020-10-13 09:48:08,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:08,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:48:08,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:48:08,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-13 09:48:08,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:08,921 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 240 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-13 09:48:08,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296911280] [2020-10-13 09:48:08,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:48:08,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 09:48:08,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791342649] [2020-10-13 09:48:08,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 09:48:08,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:48:08,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 09:48:08,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:48:08,924 INFO L87 Difference]: Start difference. First operand 41109 states and 52416 transitions. Second operand 10 states. [2020-10-13 09:48:10,164 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2020-10-13 09:48:19,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:48:19,504 INFO L93 Difference]: Finished difference Result 81629 states and 104842 transitions. [2020-10-13 09:48:19,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 09:48:19,506 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 341 [2020-10-13 09:48:19,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:48:19,613 INFO L225 Difference]: With dead ends: 81629 [2020-10-13 09:48:19,613 INFO L226 Difference]: Without dead ends: 40284 [2020-10-13 09:48:19,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2020-10-13 09:48:19,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40284 states. [2020-10-13 09:48:20,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40284 to 39812. [2020-10-13 09:48:20,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39812 states. [2020-10-13 09:48:20,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39812 states to 39812 states and 46921 transitions. [2020-10-13 09:48:20,358 INFO L78 Accepts]: Start accepts. Automaton has 39812 states and 46921 transitions. Word has length 341 [2020-10-13 09:48:20,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:48:20,358 INFO L479 AbstractCegarLoop]: Abstraction has 39812 states and 46921 transitions. [2020-10-13 09:48:20,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 09:48:20,358 INFO L276 IsEmpty]: Start isEmpty. Operand 39812 states and 46921 transitions. [2020-10-13 09:48:20,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-10-13 09:48:20,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:48:20,378 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-13 09:48:20,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:48:20,379 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:48:20,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:48:20,379 INFO L82 PathProgramCache]: Analyzing trace with hash -2132372361, now seen corresponding path program 1 times [2020-10-13 09:48:20,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:48:20,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918178586] [2020-10-13 09:48:20,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:48:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:20,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:20,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:20,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:22,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:22,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:25,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:25,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 374 [2020-10-13 09:48:25,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:48:25,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 09:48:25,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:25,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:48:25,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 333 [2020-10-13 09:48:25,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 09:48:25,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:25,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:48:25,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:25,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:25,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:25,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:48:25,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:25,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:48:25,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:25,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:25,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:25,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:25,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:25,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:48:25,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:25,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:25,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:25,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:48:25,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:25,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 09:48:25,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:25,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:25,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:25,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:25,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:25,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 09:48:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:25,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:25,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:25,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 09:48:25,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:25,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 09:48:25,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:25,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:25,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:25,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:25,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:48:25,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-13 09:48:25,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:25,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:25,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:25,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 09:48:25,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:25,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-13 09:48:25,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:25,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:48:25,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:25,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-13 09:48:25,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:48:25,968 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 105 proven. 3 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2020-10-13 09:48:25,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918178586] [2020-10-13 09:48:25,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:48:25,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:48:25,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970892929] [2020-10-13 09:48:25,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:48:25,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:48:25,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:48:25,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:48:25,971 INFO L87 Difference]: Start difference. First operand 39812 states and 46921 transitions. Second operand 5 states. [2020-10-13 09:48:32,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:48:32,875 INFO L93 Difference]: Finished difference Result 79645 states and 93982 transitions. [2020-10-13 09:48:32,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:48:32,876 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 360 [2020-10-13 09:48:32,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:48:32,957 INFO L225 Difference]: With dead ends: 79645 [2020-10-13 09:48:32,957 INFO L226 Difference]: Without dead ends: 39816 [2020-10-13 09:48:32,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:48:33,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39816 states. [2020-10-13 09:48:33,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39816 to 39812. [2020-10-13 09:48:33,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39812 states. [2020-10-13 09:48:33,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39812 states to 39812 states and 46901 transitions. [2020-10-13 09:48:33,526 INFO L78 Accepts]: Start accepts. Automaton has 39812 states and 46901 transitions. Word has length 360 [2020-10-13 09:48:33,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:48:33,527 INFO L479 AbstractCegarLoop]: Abstraction has 39812 states and 46901 transitions. [2020-10-13 09:48:33,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:48:33,527 INFO L276 IsEmpty]: Start isEmpty. Operand 39812 states and 46901 transitions. [2020-10-13 09:48:33,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2020-10-13 09:48:33,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:48:33,585 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:48:33,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:48:33,586 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:48:33,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:48:33,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1230963410, now seen corresponding path program 1 times [2020-10-13 09:48:33,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:48:33,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468470700] [2020-10-13 09:48:33,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:48:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:33,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:34,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:34,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:34,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:37,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:38,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:38,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 674 [2020-10-13 09:48:38,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:48:38,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 09:48:38,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:38,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:48:38,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 627 [2020-10-13 09:48:38,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 09:48:38,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:38,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:48:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:38,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:38,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:38,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:48:38,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:38,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:48:38,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:38,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:38,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:38,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:38,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:38,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:48:38,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:38,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:38,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:38,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:48:38,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:38,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 09:48:38,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:38,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:38,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:38,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:38,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:38,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 09:48:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:39,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:39,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:39,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 553 [2020-10-13 09:48:39,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:39,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-13 09:48:39,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:39,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:48:39,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:39,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 541 [2020-10-13 09:48:39,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:39,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:48:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:39,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:39,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:39,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-13 09:48:39,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:39,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-13 09:48:39,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:39,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:48:39,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:39,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 256 [2020-10-13 09:48:39,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:39,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:48:39,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:39,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:39,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:39,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 09:48:39,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:39,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 09:48:39,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:39,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:48:39,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:39,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 09:48:39,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:40,347 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 09:48:40,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468470700] [2020-10-13 09:48:40,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:48:40,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:48:40,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995933045] [2020-10-13 09:48:40,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:48:40,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:48:40,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:48:40,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:48:40,349 INFO L87 Difference]: Start difference. First operand 39812 states and 46901 transitions. Second operand 5 states. [2020-10-13 09:48:45,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:48:45,286 INFO L93 Difference]: Finished difference Result 79648 states and 93995 transitions. [2020-10-13 09:48:45,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:48:45,287 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 658 [2020-10-13 09:48:45,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:48:45,373 INFO L225 Difference]: With dead ends: 79648 [2020-10-13 09:48:45,374 INFO L226 Difference]: Without dead ends: 39816 [2020-10-13 09:48:45,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 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 09:48:45,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39816 states. [2020-10-13 09:48:45,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39816 to 39812. [2020-10-13 09:48:45,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39812 states. [2020-10-13 09:48:45,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39812 states to 39812 states and 46879 transitions. [2020-10-13 09:48:45,930 INFO L78 Accepts]: Start accepts. Automaton has 39812 states and 46879 transitions. Word has length 658 [2020-10-13 09:48:45,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:48:45,932 INFO L479 AbstractCegarLoop]: Abstraction has 39812 states and 46879 transitions. [2020-10-13 09:48:45,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:48:45,933 INFO L276 IsEmpty]: Start isEmpty. Operand 39812 states and 46879 transitions. [2020-10-13 09:48:45,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2020-10-13 09:48:45,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:48:46,001 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:48:46,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:48:46,002 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:48:46,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:48:46,003 INFO L82 PathProgramCache]: Analyzing trace with hash 946272062, now seen corresponding path program 1 times [2020-10-13 09:48:46,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:48:46,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226901941] [2020-10-13 09:48:46,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:48:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:46,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:47,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:47,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:51,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:51,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 682 [2020-10-13 09:48:51,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:48:51,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-13 09:48:51,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:51,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:48:51,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:48:51,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:48:51,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:51,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:48:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:51,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:51,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:51,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:48:51,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:51,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:48:51,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:51,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:48:51,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:51,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:48:51,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:51,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:48:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:51,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:51,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:51,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:48:51,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:51,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 09:48:51,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:51,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:48:51,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:48:51,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:48:51,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:51,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 09:48:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:51,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:51,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:51,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 561 [2020-10-13 09:48:51,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:51,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-13 09:48:51,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:51,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:51,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 558 [2020-10-13 09:48:51,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:51,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:51,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:48:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:51,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:51,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:51,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-13 09:48:51,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:51,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 09:48:51,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:51,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:51,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:51,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:51,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:51,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:48:51,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:51,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:51,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:51,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 09:48:51,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:51,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 09:48:51,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:51,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:51,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:51,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:51,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:52,040 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 68 proven. 64 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 09:48:52,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226901941] [2020-10-13 09:48:52,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:48:52,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:48:52,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502011913] [2020-10-13 09:48:52,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:48:52,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:48:52,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:48:52,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:48:52,043 INFO L87 Difference]: Start difference. First operand 39812 states and 46879 transitions. Second operand 7 states. [2020-10-13 09:49:02,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:49:02,457 INFO L93 Difference]: Finished difference Result 79814 states and 94546 transitions. [2020-10-13 09:49:02,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:49:02,459 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 666 [2020-10-13 09:49:02,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:49:02,525 INFO L225 Difference]: With dead ends: 79814 [2020-10-13 09:49:02,525 INFO L226 Difference]: Without dead ends: 40008 [2020-10-13 09:49:02,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:49:02,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40008 states. [2020-10-13 09:49:02,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40008 to 33657. [2020-10-13 09:49:02,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33657 states. [2020-10-13 09:49:02,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33657 states to 33657 states and 38133 transitions. [2020-10-13 09:49:02,933 INFO L78 Accepts]: Start accepts. Automaton has 33657 states and 38133 transitions. Word has length 666 [2020-10-13 09:49:02,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:49:02,933 INFO L479 AbstractCegarLoop]: Abstraction has 33657 states and 38133 transitions. [2020-10-13 09:49:02,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:49:02,934 INFO L276 IsEmpty]: Start isEmpty. Operand 33657 states and 38133 transitions. [2020-10-13 09:49:02,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 831 [2020-10-13 09:49:02,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:49:02,969 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:49:02,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:49:02,970 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:49:02,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:49:02,970 INFO L82 PathProgramCache]: Analyzing trace with hash -514605274, now seen corresponding path program 1 times [2020-10-13 09:49:02,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:49:02,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627415729] [2020-10-13 09:49:02,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:49:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:03,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:03,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:03,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:08,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:08,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 848 [2020-10-13 09:49:08,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:49:08,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-13 09:49:08,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:08,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:49:08,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 09:49:08,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 09:49:08,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:08,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:49:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:08,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:08,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:08,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:49:08,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:08,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:49:08,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:08,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:08,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:08,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:08,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:08,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:49:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:08,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:08,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:08,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:49:08,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:08,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 09:49:08,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:08,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:49:08,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:08,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 09:49:08,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:08,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:49:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:08,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:08,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:08,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 09:49:08,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:08,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 09:49:08,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:08,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:49:08,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:49:08,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:49:08,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:08,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-13 09:49:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:08,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:08,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:08,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 599 [2020-10-13 09:49:08,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:08,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-13 09:49:08,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:08,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:08,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 596 [2020-10-13 09:49:08,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:08,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:08,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:49:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:08,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:08,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:08,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-13 09:49:08,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:08,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 09:49:08,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:08,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:08,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:08,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:08,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:08,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:49:08,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:08,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:08,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:08,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:49:08,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:08,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 09:49:08,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:08,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:08,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:08,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:08,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:09,342 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 176 proven. 72 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-10-13 09:49:09,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627415729] [2020-10-13 09:49:09,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:49:09,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:49:09,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954526479] [2020-10-13 09:49:09,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:49:09,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:49:09,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:49:09,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:49:09,344 INFO L87 Difference]: Start difference. First operand 33657 states and 38133 transitions. Second operand 7 states. [2020-10-13 09:49:20,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:49:20,500 INFO L93 Difference]: Finished difference Result 68822 states and 78064 transitions. [2020-10-13 09:49:20,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:49:20,501 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 830 [2020-10-13 09:49:20,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:49:20,556 INFO L225 Difference]: With dead ends: 68822 [2020-10-13 09:49:20,556 INFO L226 Difference]: Without dead ends: 33760 [2020-10-13 09:49:20,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:49:20,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33760 states. [2020-10-13 09:49:20,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33760 to 33742. [2020-10-13 09:49:20,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33742 states. [2020-10-13 09:49:20,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33742 states to 33742 states and 37050 transitions. [2020-10-13 09:49:20,936 INFO L78 Accepts]: Start accepts. Automaton has 33742 states and 37050 transitions. Word has length 830 [2020-10-13 09:49:20,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:49:20,936 INFO L479 AbstractCegarLoop]: Abstraction has 33742 states and 37050 transitions. [2020-10-13 09:49:20,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:49:20,937 INFO L276 IsEmpty]: Start isEmpty. Operand 33742 states and 37050 transitions. [2020-10-13 09:49:20,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 870 [2020-10-13 09:49:20,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:49:20,964 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:49:20,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:49:20,964 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:49:20,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:49:20,965 INFO L82 PathProgramCache]: Analyzing trace with hash -220481167, now seen corresponding path program 1 times [2020-10-13 09:49:20,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:49:20,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299408430] [2020-10-13 09:49:20,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:49:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:21,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:21,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:21,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:23,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:23,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:26,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:26,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 885 [2020-10-13 09:49:26,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:49:26,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-13 09:49:26,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:26,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:49:26,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 838 [2020-10-13 09:49:26,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 09:49:26,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:26,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:49:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:26,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:26,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:26,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:49:26,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:26,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:49:26,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:26,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:26,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:26,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:26,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:26,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:49:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:26,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:26,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:26,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-13 09:49:26,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:26,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 09:49:26,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:26,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:26,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:26,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:26,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:49:26,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-13 09:49:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:26,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:27,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:27,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 599 [2020-10-13 09:49:27,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:27,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-10-13 09:49:27,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:27,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:49:27,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:27,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 587 [2020-10-13 09:49:27,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:27,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:49:27,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:27,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:27,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:27,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-13 09:49:27,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:27,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-13 09:49:27,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:27,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:49:27,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:27,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 302 [2020-10-13 09:49:27,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:27,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:49:27,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:27,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:27,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:27,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:49:27,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:27,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 09:49:27,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:27,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:49:27,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:27,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 09:49:27,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:28,034 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-13 09:49:28,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299408430] [2020-10-13 09:49:28,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:49:28,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:49:28,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779409702] [2020-10-13 09:49:28,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:49:28,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:49:28,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:49:28,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:49:28,036 INFO L87 Difference]: Start difference. First operand 33742 states and 37050 transitions. Second operand 5 states. [2020-10-13 09:49:32,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:49:32,736 INFO L93 Difference]: Finished difference Result 66804 states and 73433 transitions. [2020-10-13 09:49:32,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:49:32,737 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 869 [2020-10-13 09:49:32,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:49:32,792 INFO L225 Difference]: With dead ends: 66804 [2020-10-13 09:49:32,792 INFO L226 Difference]: Without dead ends: 33030 [2020-10-13 09:49:32,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:49:32,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33030 states. [2020-10-13 09:49:33,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33030 to 33024. [2020-10-13 09:49:33,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33024 states. [2020-10-13 09:49:33,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33024 states to 33024 states and 36311 transitions. [2020-10-13 09:49:33,174 INFO L78 Accepts]: Start accepts. Automaton has 33024 states and 36311 transitions. Word has length 869 [2020-10-13 09:49:33,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:49:33,175 INFO L479 AbstractCegarLoop]: Abstraction has 33024 states and 36311 transitions. [2020-10-13 09:49:33,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:49:33,175 INFO L276 IsEmpty]: Start isEmpty. Operand 33024 states and 36311 transitions. [2020-10-13 09:49:33,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 946 [2020-10-13 09:49:33,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:49:33,214 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:49:33,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:49:33,214 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:49:33,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:49:33,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1374963585, now seen corresponding path program 1 times [2020-10-13 09:49:33,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:49:33,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514260140] [2020-10-13 09:49:33,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:49:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:33,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:33,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:35,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:38,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:38,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 963 [2020-10-13 09:49:38,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:49:38,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5334 [2020-10-13 09:49:38,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:38,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:49:38,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 244 [2020-10-13 09:49:38,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 09:49:38,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:38,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:49:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:38,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:38,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:38,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:49:38,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:38,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:49:38,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:38,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:38,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:38,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:38,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:38,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:49:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:38,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:38,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:38,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-13 09:49:38,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:38,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 09:49:38,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:38,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:49:38,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:38,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 229 [2020-10-13 09:49:38,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:38,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-13 09:49:38,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:38,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:38,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:38,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 09:49:38,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:38,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 09:49:38,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:38,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:49:38,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:49:38,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-13 09:49:38,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:39,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-10-13 09:49:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:39,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:39,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:39,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 561 [2020-10-13 09:49:39,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:39,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-13 09:49:39,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:39,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:39,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 558 [2020-10-13 09:49:39,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:39,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:39,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:49:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:39,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:39,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:39,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-13 09:49:39,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:39,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 09:49:39,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:39,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:39,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:39,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:39,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:39,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:49:39,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:39,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:39,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:39,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 09:49:39,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:39,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 09:49:39,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:39,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:39,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:39,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:39,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:39,870 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 217 proven. 113 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2020-10-13 09:49:39,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [514260140] [2020-10-13 09:49:39,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:49:39,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:49:39,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828598296] [2020-10-13 09:49:39,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:49:39,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:49:39,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:49:39,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:49:39,872 INFO L87 Difference]: Start difference. First operand 33024 states and 36311 transitions. Second operand 7 states. [2020-10-13 09:49:50,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:49:50,624 INFO L93 Difference]: Finished difference Result 66074 states and 72717 transitions. [2020-10-13 09:49:50,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:49:50,625 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 945 [2020-10-13 09:49:50,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:49:50,683 INFO L225 Difference]: With dead ends: 66074 [2020-10-13 09:49:50,684 INFO L226 Difference]: Without dead ends: 33056 [2020-10-13 09:49:50,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:49:50,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33056 states. [2020-10-13 09:49:50,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33056 to 33016. [2020-10-13 09:49:50,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33016 states. [2020-10-13 09:49:51,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33016 states to 33016 states and 35425 transitions. [2020-10-13 09:49:51,024 INFO L78 Accepts]: Start accepts. Automaton has 33016 states and 35425 transitions. Word has length 945 [2020-10-13 09:49:51,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:49:51,025 INFO L479 AbstractCegarLoop]: Abstraction has 33016 states and 35425 transitions. [2020-10-13 09:49:51,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:49:51,025 INFO L276 IsEmpty]: Start isEmpty. Operand 33016 states and 35425 transitions. [2020-10-13 09:49:51,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1055 [2020-10-13 09:49:51,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:49:51,056 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:49:51,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:49:51,056 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:49:51,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:49:51,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1903631802, now seen corresponding path program 1 times [2020-10-13 09:49:51,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:49:51,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708195750] [2020-10-13 09:49:51,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:49:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:51,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:51,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:52,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:53,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:56,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:56,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1072 [2020-10-13 09:49:56,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:49:56,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-13 09:49:56,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:56,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:49:56,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 244 [2020-10-13 09:49:56,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-13 09:49:56,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:56,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:49:56,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:56,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:56,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:56,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:49:56,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:56,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:49:56,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:56,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:56,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:56,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:56,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:49:56,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:49:56,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:56,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:56,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:56,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-13 09:49:56,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:56,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-13 09:49:56,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:56,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:49:56,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:56,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 229 [2020-10-13 09:49:56,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:49:56,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-13 09:49:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:56,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:56,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:56,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-13 09:49:56,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:56,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-13 09:49:56,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:56,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:49:56,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:49:56,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-13 09:49:56,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:57,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2020-10-13 09:49:57,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:57,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:57,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:57,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 561 [2020-10-13 09:49:57,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:57,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-13 09:49:57,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:57,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:57,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 558 [2020-10-13 09:49:57,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:57,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:57,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:49:57,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:57,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:57,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:57,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-13 09:49:57,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:57,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 09:49:57,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:57,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:57,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:57,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:57,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:57,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:49:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:57,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:57,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:57,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 09:49:57,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:57,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 09:49:57,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:57,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:57,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:57,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:57,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:58,497 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 326 proven. 222 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2020-10-13 09:49:58,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708195750] [2020-10-13 09:49:58,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:49:58,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:49:58,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278773744] [2020-10-13 09:49:58,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:49:58,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:49:58,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:49:58,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:49:58,500 INFO L87 Difference]: Start difference. First operand 33016 states and 35425 transitions. Second operand 7 states.