/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/Problem12_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:25:42,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:25:42,923 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:25:42,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:25:42,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:25:42,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:25:42,950 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:25:42,952 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:25:42,954 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:25:42,955 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:25:42,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:25:42,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:25:42,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:25:42,958 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:25:42,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:25:42,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:25:42,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:25:42,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:25:42,970 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:25:42,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:25:42,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:25:42,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:25:42,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:25:42,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:25:42,979 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:25:42,980 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:25:42,980 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:25:42,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:25:42,981 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:25:42,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:25:42,982 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:25:42,983 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:25:42,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:25:42,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:25:42,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:25:42,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:25:42,986 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:25:42,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:25:42,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:25:42,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:25:42,988 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:25:42,989 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 08:25:43,011 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:25:43,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:25:43,012 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:25:43,013 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:25:43,013 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:25:43,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:25:43,013 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:25:43,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:25:43,014 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:25:43,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:25:43,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:25:43,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:25:43,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:25:43,015 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:25:43,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:25:43,015 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:25:43,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:25:43,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:25:43,016 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:25:43,016 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:25:43,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:25:43,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:25:43,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:25:43,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:25:43,017 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:25:43,017 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:25:43,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:25:43,018 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:25:43,018 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:25:43,018 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 08:25:43,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:25:43,325 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:25:43,329 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:25:43,330 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:25:43,331 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:25:43,332 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label50.c [2020-10-13 08:25:43,408 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b05caee61/4f1db0d9ab85418fbf80e75e6b76d023/FLAG239e93fd1 [2020-10-13 08:25:44,168 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:25:44,169 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label50.c [2020-10-13 08:25:44,208 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b05caee61/4f1db0d9ab85418fbf80e75e6b76d023/FLAG239e93fd1 [2020-10-13 08:25:44,255 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b05caee61/4f1db0d9ab85418fbf80e75e6b76d023 [2020-10-13 08:25:44,265 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:25:44,267 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:25:44,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:25:44,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:25:44,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:25:44,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:25:44" (1/1) ... [2020-10-13 08:25:44,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6266eb80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:25:44, skipping insertion in model container [2020-10-13 08:25:44,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:25:44" (1/1) ... [2020-10-13 08:25:44,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:25:44,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:25:45,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:25:45,721 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:25:46,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:25:46,351 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:25:46,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:25:46 WrapperNode [2020-10-13 08:25:46,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:25:46,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:25:46,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:25:46,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:25:46,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:25:46" (1/1) ... [2020-10-13 08:25:46,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:25:46" (1/1) ... [2020-10-13 08:25:46,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:25:46" (1/1) ... [2020-10-13 08:25:46,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:25:46" (1/1) ... [2020-10-13 08:25:46,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:25:46" (1/1) ... [2020-10-13 08:25:46,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:25:46" (1/1) ... [2020-10-13 08:25:46,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:25:46" (1/1) ... [2020-10-13 08:25:46,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:25:46,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:25:46,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:25:46,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:25:46,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:25:46" (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 08:25:46,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:25:46,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:25:46,716 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:25:46,716 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:25:46,717 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:25:46,717 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:25:46,718 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:25:46,719 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:25:46,719 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:25:46,719 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:25:46,719 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:25:46,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:25:46,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:25:46,720 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:25:46,720 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:25:46,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:25:46,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:25:52,047 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:25:52,047 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:25:52,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:25:52 BoogieIcfgContainer [2020-10-13 08:25:52,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:25:52,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:25:52,069 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:25:52,072 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:25:52,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:25:44" (1/3) ... [2020-10-13 08:25:52,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9046bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:25:52, skipping insertion in model container [2020-10-13 08:25:52,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:25:46" (2/3) ... [2020-10-13 08:25:52,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9046bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:25:52, skipping insertion in model container [2020-10-13 08:25:52,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:25:52" (3/3) ... [2020-10-13 08:25:52,082 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label50.c [2020-10-13 08:25:52,094 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:25:52,106 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:25:52,120 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:25:52,150 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:25:52,150 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:25:52,150 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:25:52,150 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:25:52,150 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:25:52,150 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:25:52,150 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:25:52,151 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:25:52,186 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-13 08:25:52,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-13 08:25:52,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:25:52,195 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] [2020-10-13 08:25:52,195 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:25:52,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:25:52,202 INFO L82 PathProgramCache]: Analyzing trace with hash -830521731, now seen corresponding path program 1 times [2020-10-13 08:25:52,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:25:52,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784243644] [2020-10-13 08:25:52,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:25:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:52,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:52,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:52,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 08:25:52,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:52,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-13 08:25:52,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:52,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:25:52,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:25:52,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 08:25:52,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:25:52,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:25:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:52,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:52,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:52,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:25:52,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:52,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 08:25:52,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:52,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:25:52,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:52,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:25:52,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:52,857 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 08:25:52,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784243644] [2020-10-13 08:25:52,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:25:52,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:25:52,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423055365] [2020-10-13 08:25:52,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:25:52,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:25:52,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:25:52,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:25:52,887 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-13 08:26:01,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:26:01,082 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-13 08:26:01,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:26:01,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-13 08:26:01,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:26:01,118 INFO L225 Difference]: With dead ends: 2471 [2020-10-13 08:26:01,119 INFO L226 Difference]: Without dead ends: 1568 [2020-10-13 08:26:01,132 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 08:26:01,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-13 08:26:01,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-13 08:26:01,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-13 08:26:01,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2725 transitions. [2020-10-13 08:26:01,318 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2725 transitions. Word has length 24 [2020-10-13 08:26:01,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:26:01,319 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2725 transitions. [2020-10-13 08:26:01,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:26:01,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2725 transitions. [2020-10-13 08:26:01,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 08:26:01,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:26:01,325 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:26:01,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:26:01,326 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:26:01,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:26:01,327 INFO L82 PathProgramCache]: Analyzing trace with hash -2086118223, now seen corresponding path program 1 times [2020-10-13 08:26:01,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:26:01,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442690660] [2020-10-13 08:26:01,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:26:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:01,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:01,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:02,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:02,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:02,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:26:02,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:26:02,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1090 [2020-10-13 08:26:02,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:02,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:26:02,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 08:26:02,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 08:26:02,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:26:02,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:26:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:02,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:02,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:02,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:26:02,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:02,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 08:26:02,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:02,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:26:02,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:02,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:26:02,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:26:02,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:26:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:02,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:02,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:02,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 08:26:02,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:02,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 08:26:02,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:02,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:26:02,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:02,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 08:26:02,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:02,707 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:26:02,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442690660] [2020-10-13 08:26:02,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:26:02,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:26:02,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198344148] [2020-10-13 08:26:02,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:26:02,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:26:02,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:26:02,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:26:02,712 INFO L87 Difference]: Start difference. First operand 1553 states and 2725 transitions. Second operand 5 states. [2020-10-13 08:26:16,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:26:16,126 INFO L93 Difference]: Finished difference Result 4675 states and 8270 transitions. [2020-10-13 08:26:16,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:26:16,127 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-10-13 08:26:16,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:26:16,149 INFO L225 Difference]: With dead ends: 4675 [2020-10-13 08:26:16,149 INFO L226 Difference]: Without dead ends: 3128 [2020-10-13 08:26:16,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:26:16,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3128 states. [2020-10-13 08:26:16,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3128 to 3111. [2020-10-13 08:26:16,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3111 states. [2020-10-13 08:26:16,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3111 states to 3111 states and 4905 transitions. [2020-10-13 08:26:16,248 INFO L78 Accepts]: Start accepts. Automaton has 3111 states and 4905 transitions. Word has length 93 [2020-10-13 08:26:16,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:26:16,249 INFO L479 AbstractCegarLoop]: Abstraction has 3111 states and 4905 transitions. [2020-10-13 08:26:16,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:26:16,249 INFO L276 IsEmpty]: Start isEmpty. Operand 3111 states and 4905 transitions. [2020-10-13 08:26:16,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 08:26:16,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:26:16,252 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:26:16,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:26:16,253 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:26:16,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:26:16,253 INFO L82 PathProgramCache]: Analyzing trace with hash -650179756, now seen corresponding path program 1 times [2020-10-13 08:26:16,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:26:16,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969403968] [2020-10-13 08:26:16,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:26:16,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:16,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:16,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:16,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:17,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:17,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 08:26:17,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:26:17,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 893 [2020-10-13 08:26:17,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:17,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:26:17,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 08:26:17,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 08:26:17,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:17,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:26:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:17,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:17,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:17,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:26:17,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:17,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:26:17,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:17,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:26:17,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:17,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:26:17,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:26:17,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:26:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:17,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:17,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:17,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 08:26:17,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:17,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 08:26:17,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:17,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:26:17,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:17,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 08:26:17,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:26:17,393 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:26:17,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969403968] [2020-10-13 08:26:17,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:26:17,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:26:17,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430038729] [2020-10-13 08:26:17,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:26:17,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:26:17,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:26:17,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:26:17,396 INFO L87 Difference]: Start difference. First operand 3111 states and 4905 transitions. Second operand 5 states. [2020-10-13 08:26:28,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:26:28,753 INFO L93 Difference]: Finished difference Result 9343 states and 14936 transitions. [2020-10-13 08:26:28,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:26:28,756 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 08:26:28,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:26:28,794 INFO L225 Difference]: With dead ends: 9343 [2020-10-13 08:26:28,795 INFO L226 Difference]: Without dead ends: 6238 [2020-10-13 08:26:28,804 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 08:26:28,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6238 states. [2020-10-13 08:26:28,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6238 to 6209. [2020-10-13 08:26:28,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6209 states. [2020-10-13 08:26:29,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6209 states to 6209 states and 8465 transitions. [2020-10-13 08:26:29,023 INFO L78 Accepts]: Start accepts. Automaton has 6209 states and 8465 transitions. Word has length 94 [2020-10-13 08:26:29,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:26:29,023 INFO L479 AbstractCegarLoop]: Abstraction has 6209 states and 8465 transitions. [2020-10-13 08:26:29,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:26:29,024 INFO L276 IsEmpty]: Start isEmpty. Operand 6209 states and 8465 transitions. [2020-10-13 08:26:29,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-13 08:26:29,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:26:29,034 INFO L422 BasicCegarLoop]: trace histogram [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 08:26:29,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:26:29,035 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:26:29,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:26:29,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1351949197, now seen corresponding path program 1 times [2020-10-13 08:26:29,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:26:29,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695556898] [2020-10-13 08:26:29,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:26:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:29,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:29,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:29,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:29,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:29,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 08:26:29,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:26:29,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 688 [2020-10-13 08:26:29,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:29,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:26:29,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 08:26:29,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 08:26:29,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-13 08:26:29,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:26:29,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:29,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:29,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:29,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:26:29,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:29,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:26:29,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:29,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:26:29,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:29,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:26:29,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:29,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:26:29,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:29,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:29,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:29,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 08:26:29,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:29,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 08:26:29,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:29,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:26:29,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:29,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 08:26:29,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:26:30,098 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:26:30,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695556898] [2020-10-13 08:26:30,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:26:30,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:26:30,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361910309] [2020-10-13 08:26:30,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:26:30,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:26:30,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:26:30,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:26:30,104 INFO L87 Difference]: Start difference. First operand 6209 states and 8465 transitions. Second operand 5 states. [2020-10-13 08:26:42,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:26:42,023 INFO L93 Difference]: Finished difference Result 14001 states and 19925 transitions. [2020-10-13 08:26:42,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:26:42,024 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-13 08:26:42,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:26:42,065 INFO L225 Difference]: With dead ends: 14001 [2020-10-13 08:26:42,066 INFO L226 Difference]: Without dead ends: 7798 [2020-10-13 08:26:42,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:26:42,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7798 states. [2020-10-13 08:26:42,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7798 to 7773. [2020-10-13 08:26:42,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7773 states. [2020-10-13 08:26:42,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7773 states to 7773 states and 10310 transitions. [2020-10-13 08:26:42,360 INFO L78 Accepts]: Start accepts. Automaton has 7773 states and 10310 transitions. Word has length 95 [2020-10-13 08:26:42,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:26:42,364 INFO L479 AbstractCegarLoop]: Abstraction has 7773 states and 10310 transitions. [2020-10-13 08:26:42,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:26:42,364 INFO L276 IsEmpty]: Start isEmpty. Operand 7773 states and 10310 transitions. [2020-10-13 08:26:42,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 08:26:42,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:26:42,366 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:26:42,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:26:42,367 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:26:42,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:26:42,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1817770036, now seen corresponding path program 1 times [2020-10-13 08:26:42,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:26:42,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924913309] [2020-10-13 08:26:42,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:26:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:42,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:42,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:42,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:43,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:43,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 08:26:43,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:26:43,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 785 [2020-10-13 08:26:43,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:43,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:26:43,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-13 08:26:43,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 08:26:43,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:26:43,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:26:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:43,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:43,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:43,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:26:43,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:43,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:26:43,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:43,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:26:43,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:43,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:26:43,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:26:43,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:26:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:43,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:43,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:43,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 08:26:43,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:43,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 08:26:43,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:43,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:26:43,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:43,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 08:26:43,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:43,425 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:26:43,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924913309] [2020-10-13 08:26:43,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:26:43,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:26:43,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202872796] [2020-10-13 08:26:43,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:26:43,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:26:43,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:26:43,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:26:43,428 INFO L87 Difference]: Start difference. First operand 7773 states and 10310 transitions. Second operand 5 states. [2020-10-13 08:26:59,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:26:59,235 INFO L93 Difference]: Finished difference Result 19456 states and 26367 transitions. [2020-10-13 08:26:59,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:26:59,237 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-13 08:26:59,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:26:59,298 INFO L225 Difference]: With dead ends: 19456 [2020-10-13 08:26:59,298 INFO L226 Difference]: Without dead ends: 11689 [2020-10-13 08:26:59,318 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 08:26:59,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11689 states. [2020-10-13 08:26:59,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11689 to 10889. [2020-10-13 08:26:59,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10889 states. [2020-10-13 08:26:59,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10889 states to 10889 states and 14516 transitions. [2020-10-13 08:26:59,651 INFO L78 Accepts]: Start accepts. Automaton has 10889 states and 14516 transitions. Word has length 110 [2020-10-13 08:26:59,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:26:59,651 INFO L479 AbstractCegarLoop]: Abstraction has 10889 states and 14516 transitions. [2020-10-13 08:26:59,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:26:59,652 INFO L276 IsEmpty]: Start isEmpty. Operand 10889 states and 14516 transitions. [2020-10-13 08:26:59,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 08:26:59,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:26:59,657 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:26:59,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:26:59,658 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:26:59,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:26:59,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1077881296, now seen corresponding path program 1 times [2020-10-13 08:26:59,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:26:59,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680632243] [2020-10-13 08:26:59,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:26:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:59,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:59,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:00,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:00,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 08:27:00,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:27:00,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 998 [2020-10-13 08:27:00,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:00,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:27:00,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 08:27:00,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 08:27:00,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:00,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:27:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:00,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:00,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:00,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:27:00,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:00,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:27:00,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:00,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:00,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:00,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:00,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:00,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:27:00,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:00,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:00,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:00,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 08:27:00,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:00,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 08:27:00,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:00,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:27:00,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:00,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 08:27:00,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:27:00,984 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:27:00,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680632243] [2020-10-13 08:27:00,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:27:00,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:27:00,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250056015] [2020-10-13 08:27:00,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:27:00,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:27:00,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:27:00,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:27:00,989 INFO L87 Difference]: Start difference. First operand 10889 states and 14516 transitions. Second operand 6 states. [2020-10-13 08:27:20,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:27:20,127 INFO L93 Difference]: Finished difference Result 43502 states and 60723 transitions. [2020-10-13 08:27:20,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:27:20,130 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2020-10-13 08:27:20,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:27:20,288 INFO L225 Difference]: With dead ends: 43502 [2020-10-13 08:27:20,289 INFO L226 Difference]: Without dead ends: 32619 [2020-10-13 08:27:20,321 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 08:27:20,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32619 states. [2020-10-13 08:27:21,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32619 to 29528. [2020-10-13 08:27:21,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29528 states. [2020-10-13 08:27:21,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29528 states to 29528 states and 38825 transitions. [2020-10-13 08:27:21,167 INFO L78 Accepts]: Start accepts. Automaton has 29528 states and 38825 transitions. Word has length 112 [2020-10-13 08:27:21,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:27:21,168 INFO L479 AbstractCegarLoop]: Abstraction has 29528 states and 38825 transitions. [2020-10-13 08:27:21,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:27:21,168 INFO L276 IsEmpty]: Start isEmpty. Operand 29528 states and 38825 transitions. [2020-10-13 08:27:21,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-13 08:27:21,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:27:21,176 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:27:21,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:27:21,176 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:27:21,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:27:21,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1248773148, now seen corresponding path program 1 times [2020-10-13 08:27:21,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:27:21,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875405738] [2020-10-13 08:27:21,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:27:21,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:21,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:21,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:21,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-13 08:27:21,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:21,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 554 [2020-10-13 08:27:21,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:21,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:27:21,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:27:21,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-13 08:27:21,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:21,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:27:21,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:21,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:21,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:21,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:27:21,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:21,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 08:27:21,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:21,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:27:21,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:21,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:27:21,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:21,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:27:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:22,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:22,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:22,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-13 08:27:22,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:22,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 470 [2020-10-13 08:27:22,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:22,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:27:22,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:27:22,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-13 08:27:22,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:22,693 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:27:22,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875405738] [2020-10-13 08:27:22,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:27:22,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 08:27:22,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785188376] [2020-10-13 08:27:22,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:27:22,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:27:22,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:27:22,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:27:22,698 INFO L87 Difference]: Start difference. First operand 29528 states and 38825 transitions. Second operand 7 states. [2020-10-13 08:27:43,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:27:43,237 INFO L93 Difference]: Finished difference Result 85964 states and 118428 transitions. [2020-10-13 08:27:43,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:27:43,240 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2020-10-13 08:27:43,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:27:43,475 INFO L225 Difference]: With dead ends: 85964 [2020-10-13 08:27:43,476 INFO L226 Difference]: Without dead ends: 56442 [2020-10-13 08:27:43,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:27:43,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56442 states. [2020-10-13 08:27:46,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56442 to 53282. [2020-10-13 08:27:46,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53282 states. [2020-10-13 08:27:46,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53282 states to 53282 states and 68938 transitions. [2020-10-13 08:27:46,158 INFO L78 Accepts]: Start accepts. Automaton has 53282 states and 68938 transitions. Word has length 214 [2020-10-13 08:27:46,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:27:46,159 INFO L479 AbstractCegarLoop]: Abstraction has 53282 states and 68938 transitions. [2020-10-13 08:27:46,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:27:46,159 INFO L276 IsEmpty]: Start isEmpty. Operand 53282 states and 68938 transitions. [2020-10-13 08:27:46,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-13 08:27:46,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:27:46,180 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:27:46,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:27:46,181 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:27:46,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:27:46,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1264006784, now seen corresponding path program 1 times [2020-10-13 08:27:46,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:27:46,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111123694] [2020-10-13 08:27:46,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:27:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:46,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:46,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:47,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:50,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:50,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-13 08:27:50,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:27:50,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3878 [2020-10-13 08:27:50,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:50,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:27:50,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 315 [2020-10-13 08:27:50,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 08:27:50,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:50,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:27:50,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:50,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:50,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:50,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:27:50,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:50,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:27:50,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:50,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:50,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:50,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:50,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:50,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:27:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:50,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:50,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:50,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-13 08:27:50,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:50,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 08:27:50,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:50,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:50,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:50,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:50,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:27:50,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-13 08:27:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:50,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:50,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:50,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-13 08:27:50,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:50,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-13 08:27:50,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:50,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:27:50,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:50,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-13 08:27:50,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:50,960 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2020-10-13 08:27:50,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111123694] [2020-10-13 08:27:50,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:27:50,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:27:50,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704358541] [2020-10-13 08:27:50,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:27:50,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:27:50,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:27:50,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:27:50,963 INFO L87 Difference]: Start difference. First operand 53282 states and 68938 transitions. Second operand 6 states. [2020-10-13 08:28:18,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:28:18,023 INFO L93 Difference]: Finished difference Result 122868 states and 166465 transitions. [2020-10-13 08:28:18,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:28:18,026 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 327 [2020-10-13 08:28:18,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:28:18,279 INFO L225 Difference]: With dead ends: 122868 [2020-10-13 08:28:18,280 INFO L226 Difference]: Without dead ends: 69592 [2020-10-13 08:28:18,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:28:18,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69592 states. [2020-10-13 08:28:21,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69592 to 69588. [2020-10-13 08:28:21,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69588 states. [2020-10-13 08:28:21,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69588 states to 69588 states and 91778 transitions. [2020-10-13 08:28:21,666 INFO L78 Accepts]: Start accepts. Automaton has 69588 states and 91778 transitions. Word has length 327 [2020-10-13 08:28:21,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:28:21,667 INFO L479 AbstractCegarLoop]: Abstraction has 69588 states and 91778 transitions. [2020-10-13 08:28:21,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:28:21,667 INFO L276 IsEmpty]: Start isEmpty. Operand 69588 states and 91778 transitions. [2020-10-13 08:28:21,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-10-13 08:28:21,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:28:21,696 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:28:21,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:28:21,697 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:28:21,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:28:21,698 INFO L82 PathProgramCache]: Analyzing trace with hash 499335743, now seen corresponding path program 1 times [2020-10-13 08:28:21,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:28:21,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698113555] [2020-10-13 08:28:21,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:28:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:21,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:22,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:25,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:25,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 374 [2020-10-13 08:28:25,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:28:25,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3859 [2020-10-13 08:28:25,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:25,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:28:25,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:28:25,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-13 08:28:25,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:28:25,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:28:25,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:25,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:25,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:25,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:28:25,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:25,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 08:28:25,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:25,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:28:25,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:28:25,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:25,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:28:25,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:25,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:26,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:26,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 08:28:26,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:26,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-13 08:28:26,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:26,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:28:26,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:28:26,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-13 08:28:26,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:28:26,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-13 08:28:26,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:26,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:26,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:26,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-13 08:28:26,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:26,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-13 08:28:26,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:26,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:26,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 188 [2020-10-13 08:28:26,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:26,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:28:27,523 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 34 proven. 143 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:28:27,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698113555] [2020-10-13 08:28:27,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:28:27,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:28:27,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100768581] [2020-10-13 08:28:27,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:28:27,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:28:27,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:28:27,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:28:27,533 INFO L87 Difference]: Start difference. First operand 69588 states and 91778 transitions. Second operand 7 states. [2020-10-13 08:28:48,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:28:48,431 INFO L93 Difference]: Finished difference Result 139647 states and 185883 transitions. [2020-10-13 08:28:48,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:28:48,435 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 362 [2020-10-13 08:28:48,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:28:48,645 INFO L225 Difference]: With dead ends: 139647 [2020-10-13 08:28:48,646 INFO L226 Difference]: Without dead ends: 70832 [2020-10-13 08:28:48,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:28:48,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70832 states. [2020-10-13 08:28:49,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70832 to 68500. [2020-10-13 08:28:49,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68500 states. [2020-10-13 08:28:50,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68500 states to 68500 states and 91944 transitions. [2020-10-13 08:28:50,112 INFO L78 Accepts]: Start accepts. Automaton has 68500 states and 91944 transitions. Word has length 362 [2020-10-13 08:28:50,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:28:50,113 INFO L479 AbstractCegarLoop]: Abstraction has 68500 states and 91944 transitions. [2020-10-13 08:28:50,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:28:50,113 INFO L276 IsEmpty]: Start isEmpty. Operand 68500 states and 91944 transitions. [2020-10-13 08:28:50,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-10-13 08:28:50,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:28:50,142 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:28:50,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:28:50,143 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:28:50,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:28:50,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1861516936, now seen corresponding path program 1 times [2020-10-13 08:28:50,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:28:50,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95767723] [2020-10-13 08:28:50,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:28:50,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:50,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:50,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:52,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:52,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 375 [2020-10-13 08:28:52,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:28:52,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2522 [2020-10-13 08:28:52,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:52,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:28:52,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-13 08:28:52,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-13 08:28:52,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:28:52,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:28:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:52,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:52,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:52,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:28:52,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:52,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:28:52,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:52,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:52,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:52,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:52,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:53,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:28:53,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:53,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:53,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:53,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-13 08:28:53,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:53,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-13 08:28:53,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:53,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:28:53,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:53,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-13 08:28:53,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:28:53,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-13 08:28:53,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:53,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:53,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:53,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-13 08:28:53,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:53,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-13 08:28:53,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:53,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:28:53,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:28:53,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-13 08:28:53,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:53,871 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 180 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:28:53,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95767723] [2020-10-13 08:28:53,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:28:53,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:28:53,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945932832] [2020-10-13 08:28:53,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:28:53,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:28:53,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:28:53,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:28:53,873 INFO L87 Difference]: Start difference. First operand 68500 states and 91944 transitions. Second operand 8 states. [2020-10-13 08:29:20,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:29:20,992 INFO L93 Difference]: Finished difference Result 149070 states and 206980 transitions. [2020-10-13 08:29:20,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 08:29:20,995 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 363 [2020-10-13 08:29:20,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:29:21,247 INFO L225 Difference]: With dead ends: 149070 [2020-10-13 08:29:21,247 INFO L226 Difference]: Without dead ends: 82112 [2020-10-13 08:29:23,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 08:29:23,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82112 states. [2020-10-13 08:29:24,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82112 to 81934. [2020-10-13 08:29:24,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81934 states. [2020-10-13 08:29:24,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81934 states to 81934 states and 103641 transitions. [2020-10-13 08:29:24,755 INFO L78 Accepts]: Start accepts. Automaton has 81934 states and 103641 transitions. Word has length 363 [2020-10-13 08:29:24,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:29:24,756 INFO L479 AbstractCegarLoop]: Abstraction has 81934 states and 103641 transitions. [2020-10-13 08:29:24,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:29:24,757 INFO L276 IsEmpty]: Start isEmpty. Operand 81934 states and 103641 transitions. [2020-10-13 08:29:24,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2020-10-13 08:29:24,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:29:24,798 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-13 08:29:24,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:29:24,798 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:29:24,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:29:24,799 INFO L82 PathProgramCache]: Analyzing trace with hash -132284901, now seen corresponding path program 1 times [2020-10-13 08:29:24,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:29:24,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320013408] [2020-10-13 08:29:24,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:29:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:24,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:25,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:27,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:27,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 521 [2020-10-13 08:29:27,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:29:27,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2990 [2020-10-13 08:29:27,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:27,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:29:27,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-13 08:29:27,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-13 08:29:27,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:28,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:29:28,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:28,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:28,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:28,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:29:28,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:28,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:29:28,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:28,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:29:28,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:28,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:29:28,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:28,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:29:28,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:28,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:28,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:28,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 08:29:28,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:28,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-13 08:29:28,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:28,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:29:28,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:28,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-13 08:29:28,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0