/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/Problem03_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:24:59,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:24:59,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:24:59,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:24:59,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:24:59,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:24:59,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:24:59,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:24:59,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:24:59,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:24:59,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:24:59,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:24:59,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:24:59,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:24:59,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:24:59,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:24:59,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:24:59,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:24:59,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:24:59,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:24:59,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:24:59,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:24:59,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:24:59,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:24:59,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:24:59,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:24:59,193 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:24:59,193 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:24:59,194 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:24:59,195 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:24:59,195 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:24:59,196 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:24:59,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:24:59,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:24:59,203 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:24:59,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:24:59,204 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:24:59,204 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:24:59,205 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:24:59,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:24:59,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:24:59,210 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 06:24:59,247 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:24:59,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:24:59,249 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:24:59,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:24:59,250 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:24:59,250 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:24:59,250 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:24:59,250 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:24:59,251 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:24:59,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:24:59,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:24:59,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:24:59,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:24:59,253 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:24:59,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:24:59,253 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:24:59,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:24:59,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:24:59,254 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:24:59,254 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:24:59,254 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:24:59,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:24:59,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:24:59,255 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:24:59,255 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:24:59,255 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:24:59,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:24:59,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:24:59,255 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:24:59,256 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 06:24:59,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:24:59,593 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:24:59,596 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:24:59,597 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:24:59,598 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:24:59,599 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label43.c [2020-10-13 06:24:59,662 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/246d7ad91/3605444f03e843058f0ef9a069a8f1ba/FLAG6a41223c0 [2020-10-13 06:25:00,248 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:25:00,248 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label43.c [2020-10-13 06:25:00,267 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/246d7ad91/3605444f03e843058f0ef9a069a8f1ba/FLAG6a41223c0 [2020-10-13 06:25:00,474 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/246d7ad91/3605444f03e843058f0ef9a069a8f1ba [2020-10-13 06:25:00,485 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:25:00,487 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:25:00,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:25:00,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:25:00,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:25:00,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:25:00" (1/1) ... [2020-10-13 06:25:00,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f284b94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:00, skipping insertion in model container [2020-10-13 06:25:00,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:25:00" (1/1) ... [2020-10-13 06:25:00,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:25:00,597 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:25:01,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:25:01,413 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:25:01,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:25:01,733 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:25:01,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:01 WrapperNode [2020-10-13 06:25:01,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:25:01,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:25:01,736 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:25:01,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:25:01,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:01" (1/1) ... [2020-10-13 06:25:01,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:01" (1/1) ... [2020-10-13 06:25:01,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:01" (1/1) ... [2020-10-13 06:25:01,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:01" (1/1) ... [2020-10-13 06:25:01,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:01" (1/1) ... [2020-10-13 06:25:01,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:01" (1/1) ... [2020-10-13 06:25:01,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:01" (1/1) ... [2020-10-13 06:25:01,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:25:01,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:25:01,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:25:01,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:25:01,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:01" (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 06:25:02,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:25:02,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:25:02,041 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:25:02,041 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:25:02,041 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:25:02,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:25:02,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:25:02,042 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:25:02,042 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:25:02,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:25:02,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:25:03,999 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:25:03,999 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:25:04,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:25:04 BoogieIcfgContainer [2020-10-13 06:25:04,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:25:04,007 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:25:04,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:25:04,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:25:04,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:25:00" (1/3) ... [2020-10-13 06:25:04,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11966722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:25:04, skipping insertion in model container [2020-10-13 06:25:04,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:01" (2/3) ... [2020-10-13 06:25:04,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11966722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:25:04, skipping insertion in model container [2020-10-13 06:25:04,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:25:04" (3/3) ... [2020-10-13 06:25:04,015 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label43.c [2020-10-13 06:25:04,026 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:25:04,035 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:25:04,050 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:25:04,078 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:25:04,078 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:25:04,078 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:25:04,078 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:25:04,078 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:25:04,079 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:25:04,079 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:25:04,079 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:25:04,107 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-13 06:25:04,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-13 06:25:04,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:25:04,123 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:25:04,124 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:25:04,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:25:04,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1933795261, now seen corresponding path program 1 times [2020-10-13 06:25:04,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:25:04,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730054578] [2020-10-13 06:25:04,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:25:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:04,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:05,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:08,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:08,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 06:25:08,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:25:08,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4147 [2020-10-13 06:25:08,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:08,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 06:25:08,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:25:08,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 06:25:08,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 06:25:09,612 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 61 [2020-10-13 06:25:10,480 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:25:10,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:25:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:10,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:10,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:10,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:25:10,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:10,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 06:25:10,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:10,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:25:10,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:10,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:25:10,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:11,362 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 06:25:11,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730054578] [2020-10-13 06:25:11,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:25:11,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-13 06:25:11,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144873203] [2020-10-13 06:25:11,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 06:25:11,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:25:11,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 06:25:11,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-13 06:25:11,395 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 14 states. [2020-10-13 06:25:11,813 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-13 06:25:12,626 WARN L193 SmtUtils]: Spent 745.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 166 [2020-10-13 06:25:13,263 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 166 [2020-10-13 06:25:13,947 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 174 [2020-10-13 06:25:14,926 WARN L193 SmtUtils]: Spent 877.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 173 [2020-10-13 06:25:16,182 WARN L193 SmtUtils]: Spent 915.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 172 [2020-10-13 06:25:17,486 WARN L193 SmtUtils]: Spent 838.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 171 [2020-10-13 06:25:20,172 WARN L193 SmtUtils]: Spent 804.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 170 [2020-10-13 06:25:20,985 WARN L193 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 168 [2020-10-13 06:25:23,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:25:23,290 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-13 06:25:23,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:25:23,294 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 156 [2020-10-13 06:25:23,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:25:23,315 INFO L225 Difference]: With dead ends: 737 [2020-10-13 06:25:23,315 INFO L226 Difference]: Without dead ends: 364 [2020-10-13 06:25:23,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-10-13 06:25:23,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-13 06:25:23,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-13 06:25:23,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-13 06:25:23,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-13 06:25:23,398 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 156 [2020-10-13 06:25:23,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:25:23,399 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-13 06:25:23,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 06:25:23,399 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-13 06:25:23,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-13 06:25:23,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:25:23,404 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:25:23,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:25:23,405 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:25:23,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:25:23,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1088443274, now seen corresponding path program 1 times [2020-10-13 06:25:23,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:25:23,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802932174] [2020-10-13 06:25:23,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:25:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:23,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:23,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:25,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:27,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:27,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-13 06:25:27,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:25:27,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3860 [2020-10-13 06:25:27,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:27,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:25:27,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:25:27,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-13 06:25:27,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:25:27,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:25:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:27,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:27,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:27,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:25:27,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:27,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:25:27,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:27,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:25:27,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:27,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:25:27,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:27,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:25:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:27,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:27,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:27,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:25:27,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:27,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 06:25:27,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:27,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:25:27,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:27,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:25:27,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:27,790 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:25:27,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802932174] [2020-10-13 06:25:27,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:25:27,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:25:27,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557789882] [2020-10-13 06:25:27,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:25:27,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:25:27,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:25:27,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:25:27,795 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 5 states. [2020-10-13 06:25:27,928 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:25:30,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:25:30,182 INFO L93 Difference]: Finished difference Result 831 states and 1292 transitions. [2020-10-13 06:25:30,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:25:30,183 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-13 06:25:30,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:25:30,191 INFO L225 Difference]: With dead ends: 831 [2020-10-13 06:25:30,191 INFO L226 Difference]: Without dead ends: 588 [2020-10-13 06:25:30,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:25:30,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2020-10-13 06:25:30,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 587. [2020-10-13 06:25:30,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 587 states. [2020-10-13 06:25:30,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 845 transitions. [2020-10-13 06:25:30,234 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 845 transitions. Word has length 167 [2020-10-13 06:25:30,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:25:30,235 INFO L479 AbstractCegarLoop]: Abstraction has 587 states and 845 transitions. [2020-10-13 06:25:30,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:25:30,235 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 845 transitions. [2020-10-13 06:25:30,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-13 06:25:30,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:25:30,239 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-10-13 06:25:30,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:25:30,240 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:25:30,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:25:30,240 INFO L82 PathProgramCache]: Analyzing trace with hash 667325697, now seen corresponding path program 1 times [2020-10-13 06:25:30,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:25:30,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477910147] [2020-10-13 06:25:30,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:25:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:30,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:30,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:31,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:34,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:34,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-13 06:25:34,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:25:34,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4340 [2020-10-13 06:25:34,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:34,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:25:34,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:25:34,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:25:34,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:34,878 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:25:34,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:25:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:34,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:34,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:34,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:25:34,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:34,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 06:25:34,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:34,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:25:34,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:34,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:25:34,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:25:35,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:25:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:35,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:35,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:35,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:25:35,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:35,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 06:25:35,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:35,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:25:35,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:35,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:25:35,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:35,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:25:35,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:35,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:35,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:35,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 06:25:35,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:35,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 06:25:35,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:35,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:25:35,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:25:35,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 06:25:35,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:35,161 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:25:35,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477910147] [2020-10-13 06:25:35,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:25:35,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:25:35,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798951422] [2020-10-13 06:25:35,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:25:35,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:25:35,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:25:35,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:25:35,165 INFO L87 Difference]: Start difference. First operand 587 states and 845 transitions. Second operand 7 states. [2020-10-13 06:25:35,302 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:25:35,599 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:25:38,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:25:38,188 INFO L93 Difference]: Finished difference Result 1507 states and 2295 transitions. [2020-10-13 06:25:38,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:25:38,191 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-10-13 06:25:38,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:25:38,199 INFO L225 Difference]: With dead ends: 1507 [2020-10-13 06:25:38,199 INFO L226 Difference]: Without dead ends: 1041 [2020-10-13 06:25:38,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:25:38,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2020-10-13 06:25:38,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 1023. [2020-10-13 06:25:38,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2020-10-13 06:25:38,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1456 transitions. [2020-10-13 06:25:38,251 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1456 transitions. Word has length 176 [2020-10-13 06:25:38,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:25:38,251 INFO L479 AbstractCegarLoop]: Abstraction has 1023 states and 1456 transitions. [2020-10-13 06:25:38,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:25:38,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1456 transitions. [2020-10-13 06:25:38,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-13 06:25:38,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:25:38,256 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:25:38,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:25:38,256 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:25:38,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:25:38,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1670548162, now seen corresponding path program 1 times [2020-10-13 06:25:38,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:25:38,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285066898] [2020-10-13 06:25:38,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:25:38,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:38,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:38,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:38,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-13 06:25:38,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:38,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 543 [2020-10-13 06:25:38,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:38,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:25:38,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:25:38,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-13 06:25:38,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:39,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:25:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:39,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:39,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:39,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:25:39,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:39,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:25:39,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:39,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:25:39,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:39,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:25:39,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:39,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:25:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:39,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:39,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:39,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:25:39,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:39,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 06:25:39,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:39,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:25:39,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:39,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:25:39,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:39,291 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:25:39,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285066898] [2020-10-13 06:25:39,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:25:39,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:25:39,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051387661] [2020-10-13 06:25:39,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:25:39,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:25:39,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:25:39,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:25:39,295 INFO L87 Difference]: Start difference. First operand 1023 states and 1456 transitions. Second operand 5 states. [2020-10-13 06:25:39,623 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:25:42,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:25:42,098 INFO L93 Difference]: Finished difference Result 2787 states and 4132 transitions. [2020-10-13 06:25:42,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:25:42,099 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2020-10-13 06:25:42,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:25:42,110 INFO L225 Difference]: With dead ends: 2787 [2020-10-13 06:25:42,111 INFO L226 Difference]: Without dead ends: 1885 [2020-10-13 06:25:42,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:25:42,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1885 states. [2020-10-13 06:25:42,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1885 to 1875. [2020-10-13 06:25:42,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1875 states. [2020-10-13 06:25:42,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 2638 transitions. [2020-10-13 06:25:42,179 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 2638 transitions. Word has length 177 [2020-10-13 06:25:42,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:25:42,180 INFO L479 AbstractCegarLoop]: Abstraction has 1875 states and 2638 transitions. [2020-10-13 06:25:42,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:25:42,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 2638 transitions. [2020-10-13 06:25:42,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-13 06:25:42,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:25:42,187 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-13 06:25:42,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:25:42,188 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:25:42,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:25:42,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1453051163, now seen corresponding path program 1 times [2020-10-13 06:25:42,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:25:42,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194135305] [2020-10-13 06:25:42,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:25:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:42,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:42,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:42,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:42,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:43,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:43,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:45,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:45,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:45,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-13 06:25:45,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 06:25:45,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2888 [2020-10-13 06:25:45,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:45,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:25:45,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-13 06:25:45,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:25:45,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:25:45,283 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:25:45,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:25:45,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:45,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:45,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:45,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:25:45,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:45,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:25:45,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:45,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:25:45,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:45,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:25:45,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 06:25:45,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:25:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:45,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:45,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:45,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:25:45,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:45,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 06:25:45,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:45,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:25:45,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:45,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:25:45,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:25:45,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:25:45,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:45,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:45,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:45,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:25:45,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:45,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 06:25:45,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:45,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:25:45,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 06:25:45,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:25:45,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:45,480 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 06:25:45,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194135305] [2020-10-13 06:25:45,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:25:45,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 06:25:45,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246324582] [2020-10-13 06:25:45,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:25:45,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:25:45,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:25:45,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:25:45,484 INFO L87 Difference]: Start difference. First operand 1875 states and 2638 transitions. Second operand 5 states. [2020-10-13 06:25:46,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:25:46,997 INFO L93 Difference]: Finished difference Result 3628 states and 5147 transitions. [2020-10-13 06:25:47,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:25:47,008 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2020-10-13 06:25:47,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:25:47,018 INFO L225 Difference]: With dead ends: 3628 [2020-10-13 06:25:47,018 INFO L226 Difference]: Without dead ends: 1874 [2020-10-13 06:25:47,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:25:47,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1874 states. [2020-10-13 06:25:47,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1874 to 1874. [2020-10-13 06:25:47,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1874 states. [2020-10-13 06:25:47,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1874 states to 1874 states and 2636 transitions. [2020-10-13 06:25:47,083 INFO L78 Accepts]: Start accepts. Automaton has 1874 states and 2636 transitions. Word has length 187 [2020-10-13 06:25:47,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:25:47,084 INFO L479 AbstractCegarLoop]: Abstraction has 1874 states and 2636 transitions. [2020-10-13 06:25:47,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:25:47,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1874 states and 2636 transitions. [2020-10-13 06:25:47,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-13 06:25:47,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:25:47,090 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 06:25:47,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:25:47,091 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:25:47,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:25:47,091 INFO L82 PathProgramCache]: Analyzing trace with hash -2095703464, now seen corresponding path program 1 times [2020-10-13 06:25:47,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:25:47,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409263365] [2020-10-13 06:25:47,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:25:47,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:47,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:47,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:47,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:48,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:49,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:51,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:51,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-13 06:25:51,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:25:51,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4855 [2020-10-13 06:25:51,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:51,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:25:51,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:25:51,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 06:25:51,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:52,143 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:25:52,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:25:52,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:52,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:52,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:52,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:25:52,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:52,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:25:52,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:52,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:25:52,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:52,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:25:52,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:52,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:25:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:52,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:52,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:52,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:25:52,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:52,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 06:25:52,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:52,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:25:52,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:52,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:25:52,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:25:52,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:25:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:52,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:52,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:52,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 06:25:52,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:52,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 06:25:52,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:52,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:25:52,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:25:52,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 06:25:52,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:25:52,505 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:25:52,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409263365] [2020-10-13 06:25:52,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:25:52,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:25:52,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868311359] [2020-10-13 06:25:52,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:25:52,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:25:52,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:25:52,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:25:52,509 INFO L87 Difference]: Start difference. First operand 1874 states and 2636 transitions. Second operand 7 states. [2020-10-13 06:25:52,643 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:25:54,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:25:54,334 INFO L93 Difference]: Finished difference Result 3595 states and 5134 transitions. [2020-10-13 06:25:54,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 06:25:54,336 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 201 [2020-10-13 06:25:54,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:25:54,346 INFO L225 Difference]: With dead ends: 3595 [2020-10-13 06:25:54,346 INFO L226 Difference]: Without dead ends: 1842 [2020-10-13 06:25:54,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-13 06:25:54,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1842 states. [2020-10-13 06:25:54,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1842 to 1842. [2020-10-13 06:25:54,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1842 states. [2020-10-13 06:25:54,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2550 transitions. [2020-10-13 06:25:54,398 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2550 transitions. Word has length 201 [2020-10-13 06:25:54,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:25:54,398 INFO L479 AbstractCegarLoop]: Abstraction has 1842 states and 2550 transitions. [2020-10-13 06:25:54,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:25:54,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2550 transitions. [2020-10-13 06:25:54,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-13 06:25:54,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:25:54,405 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:25:54,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:25:54,405 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:25:54,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:25:54,406 INFO L82 PathProgramCache]: Analyzing trace with hash 992753290, now seen corresponding path program 1 times [2020-10-13 06:25:54,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:25:54,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978663616] [2020-10-13 06:25:54,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:25:54,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:54,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:54,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:55,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:56,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:57,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:57,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:57,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-13 06:25:57,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:25:57,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3216 [2020-10-13 06:25:57,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:57,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:25:57,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:25:57,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:25:57,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:57,851 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:25:57,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:25:57,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:57,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:57,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:57,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:25:57,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:57,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:25:57,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:57,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:25:57,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:57,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:25:57,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:57,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:25:57,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:57,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:57,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:57,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:25:57,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:57,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 06:25:57,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:57,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:25:57,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:57,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:25:57,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:57,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:25:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:57,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:58,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:58,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:25:58,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:58,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 06:25:58,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:58,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:25:58,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:25:58,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:25:58,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:58,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 06:25:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:58,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:58,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:58,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:25:58,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:58,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:25:58,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:58,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:25:58,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 06:25:58,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:25:58,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:58,107 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 48 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-13 06:25:58,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978663616] [2020-10-13 06:25:58,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:25:58,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:25:58,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597427280] [2020-10-13 06:25:58,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:25:58,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:25:58,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:25:58,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:25:58,110 INFO L87 Difference]: Start difference. First operand 1842 states and 2550 transitions. Second operand 8 states. [2020-10-13 06:25:58,267 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:25:58,560 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:25:59,498 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:26:01,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:01,950 INFO L93 Difference]: Finished difference Result 6984 states and 10169 transitions. [2020-10-13 06:26:01,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 06:26:01,953 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 206 [2020-10-13 06:26:01,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:01,980 INFO L225 Difference]: With dead ends: 6984 [2020-10-13 06:26:01,981 INFO L226 Difference]: Without dead ends: 5263 [2020-10-13 06:26:01,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:26:01,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5263 states. [2020-10-13 06:26:02,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5263 to 5256. [2020-10-13 06:26:02,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5256 states. [2020-10-13 06:26:02,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5256 states to 5256 states and 6710 transitions. [2020-10-13 06:26:02,123 INFO L78 Accepts]: Start accepts. Automaton has 5256 states and 6710 transitions. Word has length 206 [2020-10-13 06:26:02,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:02,124 INFO L479 AbstractCegarLoop]: Abstraction has 5256 states and 6710 transitions. [2020-10-13 06:26:02,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:26:02,124 INFO L276 IsEmpty]: Start isEmpty. Operand 5256 states and 6710 transitions. [2020-10-13 06:26:02,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-13 06:26:02,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:02,142 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:26:02,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:26:02,142 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:02,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:02,143 INFO L82 PathProgramCache]: Analyzing trace with hash -682817274, now seen corresponding path program 1 times [2020-10-13 06:26:02,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:02,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935793306] [2020-10-13 06:26:02,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:02,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:02,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:02,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:03,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:05,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:05,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-13 06:26:05,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:26:05,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3535 [2020-10-13 06:26:05,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:05,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:05,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:26:05,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 06:26:05,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:05,907 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:05,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:05,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:05,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:05,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:05,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:05,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:26:05,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:05,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:05,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:05,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:05,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:05,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:06,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:06,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:06,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:06,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:26:06,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:06,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 06:26:06,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:06,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:06,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:06,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:26:06,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:06,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:26:06,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:06,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:06,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:06,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 06:26:06,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:06,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-13 06:26:06,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:06,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:06,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:06,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 06:26:06,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:06,262 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:26:06,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935793306] [2020-10-13 06:26:06,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:06,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:26:06,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805699956] [2020-10-13 06:26:06,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:26:06,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:06,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:26:06,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:26:06,265 INFO L87 Difference]: Start difference. First operand 5256 states and 6710 transitions. Second operand 7 states. [2020-10-13 06:26:06,394 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:26:07,207 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:26:08,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:08,808 INFO L93 Difference]: Finished difference Result 10435 states and 13478 transitions. [2020-10-13 06:26:08,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:26:08,809 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 244 [2020-10-13 06:26:08,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:08,832 INFO L225 Difference]: With dead ends: 10435 [2020-10-13 06:26:08,833 INFO L226 Difference]: Without dead ends: 5300 [2020-10-13 06:26:08,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:26:08,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5300 states. [2020-10-13 06:26:08,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5300 to 5276. [2020-10-13 06:26:08,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5276 states. [2020-10-13 06:26:08,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5276 states to 5276 states and 6650 transitions. [2020-10-13 06:26:08,979 INFO L78 Accepts]: Start accepts. Automaton has 5276 states and 6650 transitions. Word has length 244 [2020-10-13 06:26:08,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:08,979 INFO L479 AbstractCegarLoop]: Abstraction has 5276 states and 6650 transitions. [2020-10-13 06:26:08,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:26:08,980 INFO L276 IsEmpty]: Start isEmpty. Operand 5276 states and 6650 transitions. [2020-10-13 06:26:08,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-13 06:26:08,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:08,993 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:26:08,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:26:08,994 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:08,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:08,994 INFO L82 PathProgramCache]: Analyzing trace with hash 93770009, now seen corresponding path program 1 times [2020-10-13 06:26:08,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:08,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249459816] [2020-10-13 06:26:08,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:09,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:09,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:10,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:12,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:12,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:12,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:12,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-13 06:26:12,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:26:12,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3485 [2020-10-13 06:26:12,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:12,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:12,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:26:12,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 06:26:12,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:12,688 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:12,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:12,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:12,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:12,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:12,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:12,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:26:12,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:12,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:12,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:12,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:12,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:12,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:12,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:12,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:12,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:12,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:26:12,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:12,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:26:12,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:12,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:12,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:12,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:26:12,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:12,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:26:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:12,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:12,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:12,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 06:26:12,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:12,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-13 06:26:12,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:12,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:12,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:12,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 06:26:12,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:13,083 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:26:13,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249459816] [2020-10-13 06:26:13,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:13,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:26:13,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577485200] [2020-10-13 06:26:13,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:26:13,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:13,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:26:13,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:26:13,086 INFO L87 Difference]: Start difference. First operand 5276 states and 6650 transitions. Second operand 8 states. [2020-10-13 06:26:13,239 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-13 06:26:13,508 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:26:17,360 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-13 06:26:17,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:17,449 INFO L93 Difference]: Finished difference Result 15933 states and 20757 transitions. [2020-10-13 06:26:17,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 06:26:17,449 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 246 [2020-10-13 06:26:17,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:17,493 INFO L225 Difference]: With dead ends: 15933 [2020-10-13 06:26:17,493 INFO L226 Difference]: Without dead ends: 10778 [2020-10-13 06:26:17,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-13 06:26:17,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10778 states. [2020-10-13 06:26:17,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10778 to 10543. [2020-10-13 06:26:17,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10543 states. [2020-10-13 06:26:17,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10543 states to 10543 states and 13816 transitions. [2020-10-13 06:26:17,813 INFO L78 Accepts]: Start accepts. Automaton has 10543 states and 13816 transitions. Word has length 246 [2020-10-13 06:26:17,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:17,814 INFO L479 AbstractCegarLoop]: Abstraction has 10543 states and 13816 transitions. [2020-10-13 06:26:17,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:26:17,814 INFO L276 IsEmpty]: Start isEmpty. Operand 10543 states and 13816 transitions. [2020-10-13 06:26:17,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-13 06:26:17,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:17,846 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:26:17,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:26:17,846 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:17,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:17,847 INFO L82 PathProgramCache]: Analyzing trace with hash -842346471, now seen corresponding path program 1 times [2020-10-13 06:26:17,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:17,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452474652] [2020-10-13 06:26:17,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:17,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:17,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:18,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:18,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:20,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:22,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:22,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:22,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:22,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-13 06:26:22,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:26:22,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 06:26:22,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:22,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:22,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-13 06:26:22,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 06:26:22,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:23,106 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:23,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:23,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:23,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:23,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:23,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:23,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:26:23,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:23,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:23,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:23,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:23,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:23,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:23,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:23,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:23,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:26:23,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:23,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:26:23,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:23,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:23,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:23,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:23,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:23,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:26:23,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:23,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:23,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:23,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 06:26:23,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:23,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 06:26:23,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:23,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:23,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:23,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 06:26:23,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:23,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-13 06:26:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:23,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:23,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:23,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 06:26:23,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:23,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 06:26:23,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:23,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:23,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:23,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 06:26:23,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:23,528 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 161 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-13 06:26:23,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1452474652] [2020-10-13 06:26:23,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:23,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:26:23,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362682034] [2020-10-13 06:26:23,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:26:23,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:23,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:26:23,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:26:23,530 INFO L87 Difference]: Start difference. First operand 10543 states and 13816 transitions. Second operand 7 states. [2020-10-13 06:26:23,907 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:26:25,172 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:26:26,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:26,658 INFO L93 Difference]: Finished difference Result 23568 states and 33063 transitions. [2020-10-13 06:26:26,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:26:26,658 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 281 [2020-10-13 06:26:26,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:26,733 INFO L225 Difference]: With dead ends: 23568 [2020-10-13 06:26:26,734 INFO L226 Difference]: Without dead ends: 13146 [2020-10-13 06:26:26,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:26:26,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13146 states. [2020-10-13 06:26:27,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13146 to 12836. [2020-10-13 06:26:27,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12836 states. [2020-10-13 06:26:27,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12836 states to 12836 states and 16517 transitions. [2020-10-13 06:26:27,340 INFO L78 Accepts]: Start accepts. Automaton has 12836 states and 16517 transitions. Word has length 281 [2020-10-13 06:26:27,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:27,340 INFO L479 AbstractCegarLoop]: Abstraction has 12836 states and 16517 transitions. [2020-10-13 06:26:27,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:26:27,341 INFO L276 IsEmpty]: Start isEmpty. Operand 12836 states and 16517 transitions. [2020-10-13 06:26:27,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-10-13 06:26:27,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:27,378 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:26:27,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 06:26:27,378 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:27,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:27,379 INFO L82 PathProgramCache]: Analyzing trace with hash -86140501, now seen corresponding path program 1 times [2020-10-13 06:26:27,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:27,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97168281] [2020-10-13 06:26:27,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:27,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:27,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:28,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:28,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:30,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:32,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:32,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-13 06:26:32,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:26:32,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-13 06:26:32,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:32,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:32,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-13 06:26:32,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 06:26:32,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:32,658 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:32,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:32,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:32,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:32,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:32,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:32,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:32,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:26:32,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:32,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:32,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:32,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:32,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:32,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:32,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:32,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:32,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:26:32,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:32,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:26:32,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:32,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:32,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:32,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:32,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:32,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:26:32,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:32,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:32,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:32,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 06:26:32,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:32,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 06:26:32,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:32,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:32,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:32,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 06:26:32,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:32,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-13 06:26:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:32,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:32,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:32,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 06:26:32,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:32,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 06:26:32,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:32,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:32,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:32,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 06:26:32,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:33,047 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 183 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-13 06:26:33,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97168281] [2020-10-13 06:26:33,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:33,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:26:33,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337034651] [2020-10-13 06:26:33,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:26:33,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:33,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:26:33,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:26:33,050 INFO L87 Difference]: Start difference. First operand 12836 states and 16517 transitions. Second operand 7 states. [2020-10-13 06:26:33,332 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:26:34,302 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:26:37,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:37,301 INFO L93 Difference]: Finished difference Result 31061 states and 42456 transitions. [2020-10-13 06:26:37,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:26:37,302 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 292 [2020-10-13 06:26:37,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:37,372 INFO L225 Difference]: With dead ends: 31061 [2020-10-13 06:26:37,372 INFO L226 Difference]: Without dead ends: 18346 [2020-10-13 06:26:37,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:26:37,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18346 states. [2020-10-13 06:26:37,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18346 to 17798. [2020-10-13 06:26:37,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17798 states. [2020-10-13 06:26:37,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17798 states to 17798 states and 22492 transitions. [2020-10-13 06:26:37,906 INFO L78 Accepts]: Start accepts. Automaton has 17798 states and 22492 transitions. Word has length 292 [2020-10-13 06:26:37,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:37,906 INFO L479 AbstractCegarLoop]: Abstraction has 17798 states and 22492 transitions. [2020-10-13 06:26:37,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:26:37,907 INFO L276 IsEmpty]: Start isEmpty. Operand 17798 states and 22492 transitions. [2020-10-13 06:26:37,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-13 06:26:37,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:37,955 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:26:37,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 06:26:37,955 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:37,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:37,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1871688644, now seen corresponding path program 1 times [2020-10-13 06:26:37,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:37,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813334221] [2020-10-13 06:26:37,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:38,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:38,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:38,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:38,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:38,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:43,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:43,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:43,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-13 06:26:43,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:26:43,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5208 [2020-10-13 06:26:43,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:43,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:43,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-13 06:26:43,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 06:26:43,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:43,391 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:43,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:43,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:43,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:43,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:43,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:43,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:43,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:26:43,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:43,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:43,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:43,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:43,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:43,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:43,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:43,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:43,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:26:43,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:43,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 06:26:43,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:43,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:43,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:43,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:43,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:43,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:26:43,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:43,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:43,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:43,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 06:26:43,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:43,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 06:26:43,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:43,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:43,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:43,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 06:26:43,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:43,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-13 06:26:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:43,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:43,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:43,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 06:26:43,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:43,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 06:26:43,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:43,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:43,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:43,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 06:26:43,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:43,890 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 213 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-13 06:26:43,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813334221] [2020-10-13 06:26:43,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:43,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:26:43,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681050506] [2020-10-13 06:26:43,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:26:43,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:43,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:26:43,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:26:43,892 INFO L87 Difference]: Start difference. First operand 17798 states and 22492 transitions. Second operand 7 states. [2020-10-13 06:26:44,185 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:26:45,404 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:26:47,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:47,000 INFO L93 Difference]: Finished difference Result 35481 states and 47670 transitions. [2020-10-13 06:26:47,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:26:47,001 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 309 [2020-10-13 06:26:47,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:47,081 INFO L225 Difference]: With dead ends: 35481 [2020-10-13 06:26:47,082 INFO L226 Difference]: Without dead ends: 18268 [2020-10-13 06:26:47,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:26:47,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18268 states. [2020-10-13 06:26:47,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18268 to 17811. [2020-10-13 06:26:47,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17811 states. [2020-10-13 06:26:47,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17811 states to 17811 states and 21682 transitions. [2020-10-13 06:26:47,551 INFO L78 Accepts]: Start accepts. Automaton has 17811 states and 21682 transitions. Word has length 309 [2020-10-13 06:26:47,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:47,552 INFO L479 AbstractCegarLoop]: Abstraction has 17811 states and 21682 transitions. [2020-10-13 06:26:47,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:26:47,552 INFO L276 IsEmpty]: Start isEmpty. Operand 17811 states and 21682 transitions. [2020-10-13 06:26:47,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-13 06:26:47,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:47,582 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 06:26:47,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 06:26:47,583 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:47,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:47,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1216259678, now seen corresponding path program 1 times [2020-10-13 06:26:47,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:47,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321216568] [2020-10-13 06:26:47,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:47,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:48,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:49,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:49,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-13 06:26:49,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:26:49,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1691 [2020-10-13 06:26:49,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:49,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:49,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:26:49,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-13 06:26:49,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:49,525 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:49,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:49,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:49,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:49,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:49,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:49,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:26:49,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:49,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:49,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:49,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:49,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:49,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:49,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:49,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:49,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:26:49,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:49,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 06:26:49,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:49,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:49,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:49,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:26:49,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:49,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:26:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:49,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:49,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:49,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-13 06:26:49,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:49,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-13 06:26:49,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:49,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:49,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:49,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-13 06:26:49,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:50,068 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:26:50,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321216568] [2020-10-13 06:26:50,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:50,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:26:50,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817637995] [2020-10-13 06:26:50,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:26:50,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:50,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:26:50,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:26:50,070 INFO L87 Difference]: Start difference. First operand 17811 states and 21682 transitions. Second operand 7 states. [2020-10-13 06:26:50,352 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:26:51,509 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:26:52,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:52,970 INFO L93 Difference]: Finished difference Result 34958 states and 44269 transitions. [2020-10-13 06:26:52,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:26:52,971 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 311 [2020-10-13 06:26:52,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:53,036 INFO L225 Difference]: With dead ends: 34958 [2020-10-13 06:26:53,036 INFO L226 Difference]: Without dead ends: 17491 [2020-10-13 06:26:53,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:26:53,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17491 states. [2020-10-13 06:26:53,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17491 to 15268. [2020-10-13 06:26:53,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15268 states. [2020-10-13 06:26:53,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15268 states to 15268 states and 17977 transitions. [2020-10-13 06:26:53,450 INFO L78 Accepts]: Start accepts. Automaton has 15268 states and 17977 transitions. Word has length 311 [2020-10-13 06:26:53,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:53,451 INFO L479 AbstractCegarLoop]: Abstraction has 15268 states and 17977 transitions. [2020-10-13 06:26:53,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:26:53,451 INFO L276 IsEmpty]: Start isEmpty. Operand 15268 states and 17977 transitions. [2020-10-13 06:26:53,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-13 06:26:53,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:53,471 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:26:53,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 06:26:53,472 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:53,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:53,472 INFO L82 PathProgramCache]: Analyzing trace with hash 379713074, now seen corresponding path program 1 times [2020-10-13 06:26:53,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:53,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265358964] [2020-10-13 06:26:53,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:53,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:53,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:53,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:55,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:55,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-13 06:26:55,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:26:55,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2135 [2020-10-13 06:26:55,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:55,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:55,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:26:55,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 06:26:55,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:55,914 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:55,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:55,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:55,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:55,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:55,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:55,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:55,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:26:55,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:55,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:55,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:55,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:55,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:56,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:56,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:56,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:56,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:26:56,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:56,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 06:26:56,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:56,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:56,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:56,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:26:56,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:56,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:26:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:56,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:56,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:56,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 06:26:56,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:56,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 06:26:56,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:56,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:56,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:56,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 06:26:56,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:56,520 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:26:56,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265358964] [2020-10-13 06:26:56,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:56,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:26:56,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993930807] [2020-10-13 06:26:56,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:26:56,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:56,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:26:56,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:26:56,522 INFO L87 Difference]: Start difference. First operand 15268 states and 17977 transitions. Second operand 7 states. [2020-10-13 06:26:56,673 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:26:57,492 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:26:59,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:59,464 INFO L93 Difference]: Finished difference Result 32307 states and 38288 transitions. [2020-10-13 06:26:59,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:26:59,465 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 319 [2020-10-13 06:26:59,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:59,502 INFO L225 Difference]: With dead ends: 32307 [2020-10-13 06:26:59,503 INFO L226 Difference]: Without dead ends: 17369 [2020-10-13 06:26:59,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:26:59,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17369 states. [2020-10-13 06:26:59,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17369 to 16931. [2020-10-13 06:26:59,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16931 states. [2020-10-13 06:26:59,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16931 states to 16931 states and 19536 transitions. [2020-10-13 06:26:59,818 INFO L78 Accepts]: Start accepts. Automaton has 16931 states and 19536 transitions. Word has length 319 [2020-10-13 06:26:59,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:59,819 INFO L479 AbstractCegarLoop]: Abstraction has 16931 states and 19536 transitions. [2020-10-13 06:26:59,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:26:59,819 INFO L276 IsEmpty]: Start isEmpty. Operand 16931 states and 19536 transitions. [2020-10-13 06:26:59,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-13 06:26:59,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:59,839 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:26:59,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 06:26:59,839 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:59,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:59,839 INFO L82 PathProgramCache]: Analyzing trace with hash -110272357, now seen corresponding path program 1 times [2020-10-13 06:26:59,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:59,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093482504] [2020-10-13 06:26:59,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:59,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:00,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:00,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:04,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:04,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 342 [2020-10-13 06:27:04,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:27:04,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 06:27:04,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:04,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:27:04,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:27:04,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 06:27:04,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:05,070 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:05,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:05,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:05,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:05,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:05,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:05,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:05,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:27:05,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:05,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:05,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:05,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:27:05,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:05,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:05,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:05,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:05,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:27:05,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:05,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 06:27:05,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:05,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:05,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:05,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:27:05,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:05,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 06:27:05,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:05,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:05,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:05,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 06:27:05,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:05,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 06:27:05,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:05,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:05,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-13 06:27:05,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:05,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:05,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 06:27:05,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:05,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:05,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:05,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 06:27:05,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:05,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 06:27:05,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:05,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:05,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-13 06:27:05,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:05,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:05,478 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 161 proven. 54 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-13 06:27:05,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093482504] [2020-10-13 06:27:05,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:05,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:05,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373983774] [2020-10-13 06:27:05,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:05,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:05,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:05,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:05,480 INFO L87 Difference]: Start difference. First operand 16931 states and 19536 transitions. Second operand 7 states. [2020-10-13 06:27:05,614 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:27:06,875 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:27:08,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:08,658 INFO L93 Difference]: Finished difference Result 40993 states and 47905 transitions. [2020-10-13 06:27:08,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:27:08,658 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 328 [2020-10-13 06:27:08,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:08,719 INFO L225 Difference]: With dead ends: 40993 [2020-10-13 06:27:08,719 INFO L226 Difference]: Without dead ends: 24394 [2020-10-13 06:27:08,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:27:08,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24394 states. [2020-10-13 06:27:09,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24394 to 23402. [2020-10-13 06:27:09,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23402 states. [2020-10-13 06:27:09,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23402 states to 23402 states and 26919 transitions. [2020-10-13 06:27:09,177 INFO L78 Accepts]: Start accepts. Automaton has 23402 states and 26919 transitions. Word has length 328 [2020-10-13 06:27:09,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:09,177 INFO L479 AbstractCegarLoop]: Abstraction has 23402 states and 26919 transitions. [2020-10-13 06:27:09,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:27:09,178 INFO L276 IsEmpty]: Start isEmpty. Operand 23402 states and 26919 transitions. [2020-10-13 06:27:09,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-13 06:27:09,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:09,204 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:27:09,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 06:27:09,205 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:09,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:09,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1809347029, now seen corresponding path program 1 times [2020-10-13 06:27:09,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:09,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064288246] [2020-10-13 06:27:09,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:09,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:09,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:09,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:10,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:14,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:14,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 347 [2020-10-13 06:27:14,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:27:14,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 06:27:14,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:14,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:14,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:27:14,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:27:14,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:14,419 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:14,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:14,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:14,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:14,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:14,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:14,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:27:14,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:14,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:14,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:14,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:14,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:14,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:14,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:14,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:14,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:27:14,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:14,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 06:27:14,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:14,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:14,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:14,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:27:14,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:14,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:27:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:14,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:14,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:14,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:27:14,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:14,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 06:27:14,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:14,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:14,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:14,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:27:14,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:14,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:27:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:14,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:14,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:14,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 06:27:14,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:14,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 06:27:14,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:14,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:14,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-13 06:27:14,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:14,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:14,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-13 06:27:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:14,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:14,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:14,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 06:27:14,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:14,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 06:27:14,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:14,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:14,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-13 06:27:14,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:14,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:14,847 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 180 proven. 24 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-10-13 06:27:14,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064288246] [2020-10-13 06:27:14,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:14,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:14,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183010131] [2020-10-13 06:27:14,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:14,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:14,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:14,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:14,849 INFO L87 Difference]: Start difference. First operand 23402 states and 26919 transitions. Second operand 7 states. [2020-10-13 06:27:15,141 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:27:15,552 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:27:19,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:19,419 INFO L93 Difference]: Finished difference Result 61841 states and 73679 transitions. [2020-10-13 06:27:19,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:27:19,419 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 331 [2020-10-13 06:27:19,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:19,496 INFO L225 Difference]: With dead ends: 61841 [2020-10-13 06:27:19,496 INFO L226 Difference]: Without dead ends: 38771 [2020-10-13 06:27:19,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:27:19,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38771 states. [2020-10-13 06:27:20,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38771 to 37978. [2020-10-13 06:27:20,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37978 states. [2020-10-13 06:27:20,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37978 states to 37978 states and 43038 transitions. [2020-10-13 06:27:20,399 INFO L78 Accepts]: Start accepts. Automaton has 37978 states and 43038 transitions. Word has length 331 [2020-10-13 06:27:20,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:20,399 INFO L479 AbstractCegarLoop]: Abstraction has 37978 states and 43038 transitions. [2020-10-13 06:27:20,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:27:20,399 INFO L276 IsEmpty]: Start isEmpty. Operand 37978 states and 43038 transitions. [2020-10-13 06:27:20,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-10-13 06:27:20,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:20,436 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:27:20,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 06:27:20,436 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:20,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:20,437 INFO L82 PathProgramCache]: Analyzing trace with hash 268938196, now seen corresponding path program 1 times [2020-10-13 06:27:20,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:20,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891030628] [2020-10-13 06:27:20,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:20,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:20,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:20,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:20,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:25,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:25,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 355 [2020-10-13 06:27:25,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:27:25,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 06:27:25,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:25,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 06:27:25,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:27:25,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 06:27:25,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:25,690 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:25,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:25,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:25,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:25,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:25,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:25,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:27:25,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:25,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:25,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:25,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:27:25,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:25,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:25,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:25,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:25,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:27:25,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:25,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 06:27:25,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:25,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:25,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:25,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:27:25,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:25,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:27:25,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:25,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:25,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:25,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:27:25,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:25,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 06:27:25,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:25,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:25,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:25,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:27:25,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:25,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 06:27:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:25,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:25,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:25,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 06:27:25,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:25,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 06:27:25,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:25,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:25,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-13 06:27:25,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:25,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:26,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-13 06:27:26,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:26,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:26,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:26,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 06:27:26,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:26,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 06:27:26,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:26,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:26,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-13 06:27:26,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:26,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:26,168 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 178 proven. 68 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-13 06:27:26,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891030628] [2020-10-13 06:27:26,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:26,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:27:26,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219091815] [2020-10-13 06:27:26,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:27:26,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:26,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:27:26,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:27:26,170 INFO L87 Difference]: Start difference. First operand 37978 states and 43038 transitions. Second operand 8 states. [2020-10-13 06:27:26,300 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:27:27,714 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:27:28,426 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:27:30,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:30,028 INFO L93 Difference]: Finished difference Result 93913 states and 107559 transitions. [2020-10-13 06:27:30,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 06:27:30,028 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 339 [2020-10-13 06:27:30,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:30,146 INFO L225 Difference]: With dead ends: 93913 [2020-10-13 06:27:30,146 INFO L226 Difference]: Without dead ends: 65869 [2020-10-13 06:27:30,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-13 06:27:30,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65869 states. [2020-10-13 06:27:31,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65869 to 64729. [2020-10-13 06:27:31,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64729 states. [2020-10-13 06:27:31,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64729 states to 64729 states and 73425 transitions. [2020-10-13 06:27:31,696 INFO L78 Accepts]: Start accepts. Automaton has 64729 states and 73425 transitions. Word has length 339 [2020-10-13 06:27:31,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:31,696 INFO L479 AbstractCegarLoop]: Abstraction has 64729 states and 73425 transitions. [2020-10-13 06:27:31,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:27:31,697 INFO L276 IsEmpty]: Start isEmpty. Operand 64729 states and 73425 transitions. [2020-10-13 06:27:31,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-10-13 06:27:31,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:31,753 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:27:31,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 06:27:31,762 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:31,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:31,763 INFO L82 PathProgramCache]: Analyzing trace with hash -591573646, now seen corresponding path program 1 times [2020-10-13 06:27:31,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:31,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112829831] [2020-10-13 06:27:31,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:31,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:32,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:32,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:32,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:36,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:36,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:36,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-13 06:27:36,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:27:36,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 06:27:36,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:36,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:36,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-10-13 06:27:36,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 06:27:36,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:37,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:37,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:37,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:37,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:37,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:37,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:27:37,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:37,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:37,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:37,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:37,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:37,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:37,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:37,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:37,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:27:37,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:37,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:27:37,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:37,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:37,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:37,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:37,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:37,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:27:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:37,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:37,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:37,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 06:27:37,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:37,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-13 06:27:37,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:37,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:37,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:37,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-13 06:27:37,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:37,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-13 06:27:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:37,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:37,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:37,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 06:27:37,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:37,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 06:27:37,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:37,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:37,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:37,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 06:27:37,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:37,664 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 243 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 06:27:37,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112829831] [2020-10-13 06:27:37,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:37,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:37,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420169420] [2020-10-13 06:27:37,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:37,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:37,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:37,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:37,666 INFO L87 Difference]: Start difference. First operand 64729 states and 73425 transitions. Second operand 7 states. [2020-10-13 06:27:37,921 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-13 06:27:38,925 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:27:42,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:42,110 INFO L93 Difference]: Finished difference Result 128991 states and 150116 transitions. [2020-10-13 06:27:42,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:27:42,110 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 349 [2020-10-13 06:27:42,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:42,612 INFO L225 Difference]: With dead ends: 128991 [2020-10-13 06:27:42,612 INFO L226 Difference]: Without dead ends: 64594 [2020-10-13 06:27:42,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:27:42,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64594 states. [2020-10-13 06:27:43,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64594 to 63069. [2020-10-13 06:27:43,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63069 states. [2020-10-13 06:27:43,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63069 states to 63069 states and 71218 transitions. [2020-10-13 06:27:43,771 INFO L78 Accepts]: Start accepts. Automaton has 63069 states and 71218 transitions. Word has length 349 [2020-10-13 06:27:43,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:43,771 INFO L479 AbstractCegarLoop]: Abstraction has 63069 states and 71218 transitions. [2020-10-13 06:27:43,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:27:43,772 INFO L276 IsEmpty]: Start isEmpty. Operand 63069 states and 71218 transitions. [2020-10-13 06:27:43,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-13 06:27:43,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:43,818 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:27:43,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 06:27:43,819 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:43,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:43,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1169393383, now seen corresponding path program 1 times [2020-10-13 06:27:43,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:43,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684872813] [2020-10-13 06:27:43,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:43,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:43,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:44,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:44,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:44,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:45,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:48,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:48,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-10-13 06:27:48,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:27:48,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-13 06:27:48,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:48,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:48,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-13 06:27:48,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 06:27:48,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:49,161 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:49,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:49,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:49,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:49,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:49,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:49,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:27:49,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:49,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:49,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:49,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:49,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:49,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:49,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:49,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:49,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:27:49,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:49,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:27:49,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:49,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:49,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:49,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:49,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:49,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:27:49,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:49,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:49,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:49,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 06:27:49,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:49,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-13 06:27:49,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:49,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:49,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:49,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-13 06:27:49,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:49,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-13 06:27:49,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:49,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:49,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:49,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 06:27:49,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:49,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-13 06:27:49,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:49,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:49,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:49,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 06:27:49,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:49,738 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 263 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 06:27:49,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684872813] [2020-10-13 06:27:49,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:49,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:49,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489669926] [2020-10-13 06:27:49,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:49,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:49,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:49,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:49,740 INFO L87 Difference]: Start difference. First operand 63069 states and 71218 transitions. Second operand 7 states. [2020-10-13 06:27:50,689 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:27:54,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:54,132 INFO L93 Difference]: Finished difference Result 170771 states and 206772 transitions. [2020-10-13 06:27:54,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:27:54,133 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 357 [2020-10-13 06:27:54,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:54,535 INFO L225 Difference]: With dead ends: 170771 [2020-10-13 06:27:54,535 INFO L226 Difference]: Without dead ends: 107827 [2020-10-13 06:27:54,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-13 06:27:54,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107827 states. [2020-10-13 06:27:59,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107827 to 104047. [2020-10-13 06:27:59,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104047 states. [2020-10-13 06:27:59,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104047 states to 104047 states and 115954 transitions. [2020-10-13 06:27:59,249 INFO L78 Accepts]: Start accepts. Automaton has 104047 states and 115954 transitions. Word has length 357 [2020-10-13 06:27:59,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:59,250 INFO L479 AbstractCegarLoop]: Abstraction has 104047 states and 115954 transitions. [2020-10-13 06:27:59,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:27:59,250 INFO L276 IsEmpty]: Start isEmpty. Operand 104047 states and 115954 transitions. [2020-10-13 06:27:59,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-13 06:27:59,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:59,299 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:27:59,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 06:27:59,299 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:59,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:59,300 INFO L82 PathProgramCache]: Analyzing trace with hash 17583959, now seen corresponding path program 1 times [2020-10-13 06:27:59,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:59,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518662724] [2020-10-13 06:27:59,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:59,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:59,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:59,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-10-13 06:27:59,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:59,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 575 [2020-10-13 06:27:59,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:59,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:59,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-13 06:27:59,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 06:27:59,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:00,236 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:28:00,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:28:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:00,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:00,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:00,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:28:00,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:00,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:28:00,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:00,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:00,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:00,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:00,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:28:00,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:28:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:00,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:00,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:00,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:28:00,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:00,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:28:00,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:00,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:00,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:00,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:00,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:28:00,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:28:00,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:00,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:00,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:00,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 06:28:00,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:00,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-13 06:28:00,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:00,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:28:00,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:00,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-13 06:28:00,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:28:00,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-13 06:28:00,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:00,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:01,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:01,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 06:28:01,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:01,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-13 06:28:01,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:01,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:01,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:28:01,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 06:28:01,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:28:01,644 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 263 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 06:28:01,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518662724] [2020-10-13 06:28:01,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:28:01,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:28:01,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773368035] [2020-10-13 06:28:01,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:28:01,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:28:01,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:28:01,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:28:01,646 INFO L87 Difference]: Start difference. First operand 104047 states and 115954 transitions. Second operand 7 states. [2020-10-13 06:28:01,794 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:28:03,157 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 06:28:05,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:28:05,878 INFO L93 Difference]: Finished difference Result 189445 states and 211334 transitions. [2020-10-13 06:28:05,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:28:05,878 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 357 [2020-10-13 06:28:05,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:28:06,117 INFO L225 Difference]: With dead ends: 189445 [2020-10-13 06:28:06,118 INFO L226 Difference]: Without dead ends: 107093 [2020-10-13 06:28:06,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:28:06,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107093 states. [2020-10-13 06:28:07,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107093 to 102875. [2020-10-13 06:28:07,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102875 states. [2020-10-13 06:28:07,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102875 states to 102875 states and 112724 transitions. [2020-10-13 06:28:07,519 INFO L78 Accepts]: Start accepts. Automaton has 102875 states and 112724 transitions. Word has length 357 [2020-10-13 06:28:07,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:28:07,519 INFO L479 AbstractCegarLoop]: Abstraction has 102875 states and 112724 transitions. [2020-10-13 06:28:07,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:28:07,519 INFO L276 IsEmpty]: Start isEmpty. Operand 102875 states and 112724 transitions. [2020-10-13 06:28:07,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-10-13 06:28:07,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:28:07,564 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:28:07,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 06:28:07,565 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:28:07,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:28:07,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1362203533, now seen corresponding path program 1 times [2020-10-13 06:28:07,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:28:07,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93544022] [2020-10-13 06:28:07,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:28:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:07,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:08,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:08,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 388 [2020-10-13 06:28:08,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:08,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 842 [2020-10-13 06:28:08,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:08,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:08,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 167 [2020-10-13 06:28:08,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 06:28:08,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:08,720 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:28:08,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:28:08,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:08,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:08,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:08,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:28:08,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:08,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:28:08,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:08,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:08,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:08,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:08,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:08,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:28:08,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:08,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:08,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:08,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:28:08,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:08,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:28:08,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:08,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:08,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:08,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:08,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:28:08,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:28:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:08,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:09,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:09,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 06:28:09,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:09,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 916 [2020-10-13 06:28:09,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:09,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:28:09,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:09,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-13 06:28:09,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 06:28:09,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-13 06:28:09,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:09,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:10,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:10,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 06:28:10,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:10,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 06:28:10,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:10,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:10,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:28:10,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 06:28:10,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:10,190 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 282 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 06:28:10,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93544022] [2020-10-13 06:28:10,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:28:10,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:28:10,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436161163] [2020-10-13 06:28:10,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:28:10,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:28:10,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:28:10,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:28:10,193 INFO L87 Difference]: Start difference. First operand 102875 states and 112724 transitions. Second operand 7 states. [2020-10-13 06:28:10,555 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:28:11,469 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:28:13,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:28:13,302 INFO L93 Difference]: Finished difference Result 180399 states and 197737 transitions. [2020-10-13 06:28:13,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:28:13,303 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 374 [2020-10-13 06:28:13,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:28:13,527 INFO L225 Difference]: With dead ends: 180399 [2020-10-13 06:28:13,527 INFO L226 Difference]: Without dead ends: 105240 [2020-10-13 06:28:13,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:28:13,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105240 states. [2020-10-13 06:28:17,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105240 to 104330. [2020-10-13 06:28:17,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104330 states. [2020-10-13 06:28:17,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104330 states to 104330 states and 114172 transitions. [2020-10-13 06:28:17,418 INFO L78 Accepts]: Start accepts. Automaton has 104330 states and 114172 transitions. Word has length 374 [2020-10-13 06:28:17,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:28:17,419 INFO L479 AbstractCegarLoop]: Abstraction has 104330 states and 114172 transitions. [2020-10-13 06:28:17,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:28:17,419 INFO L276 IsEmpty]: Start isEmpty. Operand 104330 states and 114172 transitions. [2020-10-13 06:28:17,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-13 06:28:17,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:28:17,463 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:28:17,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 06:28:17,463 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:28:17,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:28:17,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1472520529, now seen corresponding path program 1 times [2020-10-13 06:28:17,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:28:17,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796660460] [2020-10-13 06:28:17,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:28:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:17,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:17,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:19,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:19,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:22,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:22,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 392 [2020-10-13 06:28:22,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:28:22,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 06:28:22,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:22,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:22,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 167 [2020-10-13 06:28:22,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:28:22,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:22,718 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:28:22,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:28:22,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:22,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:22,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:22,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:28:22,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:22,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:28:22,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:22,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:22,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:22,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:22,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:22,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:28:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:22,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:22,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:22,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:28:22,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:22,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:28:22,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:22,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:22,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:22,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:22,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:22,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:28:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:22,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:22,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:22,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 06:28:22,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:22,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-13 06:28:22,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:22,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:28:22,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:22,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-13 06:28:22,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:23,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-13 06:28:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:23,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:23,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:23,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:28:23,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:23,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:28:23,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:23,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:23,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:28:23,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:28:23,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:23,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-13 06:28:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:23,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:23,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:23,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 06:28:23,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:23,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 06:28:23,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:23,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:23,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 06:28:23,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:23,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:23,300 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 227 proven. 7 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-13 06:28:23,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796660460] [2020-10-13 06:28:23,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:28:23,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:28:23,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519446129] [2020-10-13 06:28:23,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:28:23,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:28:23,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:28:23,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:28:23,302 INFO L87 Difference]: Start difference. First operand 104330 states and 114172 transitions. Second operand 8 states. [2020-10-13 06:28:23,446 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:28:24,734 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-13 06:28:25,298 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:28:27,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:28:27,770 INFO L93 Difference]: Finished difference Result 182401 states and 199648 transitions. [2020-10-13 06:28:27,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:28:27,772 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 376 [2020-10-13 06:28:27,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:28:28,356 INFO L225 Difference]: With dead ends: 182401 [2020-10-13 06:28:28,356 INFO L226 Difference]: Without dead ends: 106217 [2020-10-13 06:28:28,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-13 06:28:28,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106217 states. [2020-10-13 06:28:29,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106217 to 105550. [2020-10-13 06:28:29,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105550 states. [2020-10-13 06:28:29,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105550 states to 105550 states and 115476 transitions. [2020-10-13 06:28:29,679 INFO L78 Accepts]: Start accepts. Automaton has 105550 states and 115476 transitions. Word has length 376 [2020-10-13 06:28:29,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:28:29,680 INFO L479 AbstractCegarLoop]: Abstraction has 105550 states and 115476 transitions. [2020-10-13 06:28:29,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:28:29,680 INFO L276 IsEmpty]: Start isEmpty. Operand 105550 states and 115476 transitions. [2020-10-13 06:28:29,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2020-10-13 06:28:29,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:28:29,740 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:28:29,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 06:28:29,741 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:28:29,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:28:29,741 INFO L82 PathProgramCache]: Analyzing trace with hash -191604328, now seen corresponding path program 1 times [2020-10-13 06:28:29,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:28:29,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224343134] [2020-10-13 06:28:29,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:28:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:29,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:30,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking...