/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_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:18:09,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:18:09,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:18:09,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:18:09,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:18:09,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:18:09,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:18:09,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:18:09,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:18:10,002 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:18:10,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:18:10,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:18:10,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:18:10,007 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:18:10,010 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:18:10,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:18:10,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:18:10,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:18:10,015 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:18:10,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:18:10,024 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:18:10,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:18:10,027 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:18:10,028 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:18:10,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:18:10,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:18:10,031 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:18:10,035 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:18:10,035 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:18:10,036 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:18:10,036 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:18:10,037 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:18:10,037 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:18:10,038 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:18:10,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:18:10,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:18:10,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:18:10,040 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:18:10,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:18:10,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:18:10,042 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:18:10,043 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 06:18:10,064 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:18:10,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:18:10,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:18:10,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:18:10,066 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:18:10,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:18:10,066 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:18:10,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:18:10,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:18:10,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:18:10,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:18:10,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:18:10,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:18:10,068 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:18:10,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:18:10,068 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:18:10,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:18:10,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:18:10,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:18:10,069 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:18:10,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:18:10,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:18:10,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:18:10,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:18:10,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:18:10,071 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:18:10,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:18:10,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:18:10,071 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:18:10,071 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 06:18:10,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:18:10,415 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:18:10,420 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:18:10,423 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:18:10,424 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:18:10,425 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label19.c [2020-10-13 06:18:10,482 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71d739af9/227f5a24fcbc44f98c36dee34162417e/FLAGbc1ecb37d [2020-10-13 06:18:11,136 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:18:11,136 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label19.c [2020-10-13 06:18:11,156 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71d739af9/227f5a24fcbc44f98c36dee34162417e/FLAGbc1ecb37d [2020-10-13 06:18:11,328 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71d739af9/227f5a24fcbc44f98c36dee34162417e [2020-10-13 06:18:11,337 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:18:11,339 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:18:11,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:18:11,340 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:18:11,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:18:11,344 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:18:11" (1/1) ... [2020-10-13 06:18:11,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c78ef90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:11, skipping insertion in model container [2020-10-13 06:18:11,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:18:11" (1/1) ... [2020-10-13 06:18:11,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:18:11,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:18:12,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:18:12,298 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:18:12,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:18:12,642 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:18:12,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:12 WrapperNode [2020-10-13 06:18:12,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:18:12,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:18:12,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:18:12,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:18:12,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:12" (1/1) ... [2020-10-13 06:18:12,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:12" (1/1) ... [2020-10-13 06:18:12,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:12" (1/1) ... [2020-10-13 06:18:12,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:12" (1/1) ... [2020-10-13 06:18:12,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:12" (1/1) ... [2020-10-13 06:18:12,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:12" (1/1) ... [2020-10-13 06:18:12,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:12" (1/1) ... [2020-10-13 06:18:12,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:18:12,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:18:12,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:18:12,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:18:12,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:12" (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 06:18:12,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:18:12,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:18:12,907 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:18:12,907 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:18:12,908 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:18:12,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:18:12,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:18:12,909 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:18:12,909 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:18:12,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:18:12,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:18:14,804 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:18:14,805 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:18:14,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:18:14 BoogieIcfgContainer [2020-10-13 06:18:14,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:18:14,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:18:14,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:18:14,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:18:14,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:18:11" (1/3) ... [2020-10-13 06:18:14,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fed4b6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:18:14, skipping insertion in model container [2020-10-13 06:18:14,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:12" (2/3) ... [2020-10-13 06:18:14,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fed4b6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:18:14, skipping insertion in model container [2020-10-13 06:18:14,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:18:14" (3/3) ... [2020-10-13 06:18:14,821 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label19.c [2020-10-13 06:18:14,832 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:18:14,840 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:18:14,857 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:18:14,887 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:18:14,887 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:18:14,887 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:18:14,887 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:18:14,888 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:18:14,888 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:18:14,888 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:18:14,888 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:18:14,922 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-13 06:18:14,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-13 06:18:14,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:18:14,960 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:18:14,961 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:18:14,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:18:14,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1120905288, now seen corresponding path program 1 times [2020-10-13 06:18:14,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:18:14,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974130077] [2020-10-13 06:18:14,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:18:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:15,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:16,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:20,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:20,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 06:18:20,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:18:20,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4575 [2020-10-13 06:18:20,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:20,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 06:18:20,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:18:20,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 06:18:20,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:18:21,322 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-13 06:18:21,464 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-13 06:18:21,614 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-13 06:18:21,942 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 89 [2020-10-13 06:18:22,359 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 89 [2020-10-13 06:18:22,843 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 97 [2020-10-13 06:18:23,326 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 91 [2020-10-13 06:18:23,797 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 85 [2020-10-13 06:18:24,210 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 78 [2020-10-13 06:18:24,516 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 60 [2020-10-13 06:18:24,706 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:18:24,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:18:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:24,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:24,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:24,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:18:24,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:24,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 06:18:24,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:24,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:18:24,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:24,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:18:24,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:25,315 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 06:18:25,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974130077] [2020-10-13 06:18:25,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:18:25,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 06:18:25,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022650856] [2020-10-13 06:18:25,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 06:18:25,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:18:25,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 06:18:25,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:18:25,336 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 13 states. [2020-10-13 06:18:25,741 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-13 06:18:26,511 WARN L193 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 187 [2020-10-13 06:18:27,311 WARN L193 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 187 [2020-10-13 06:18:28,242 WARN L193 SmtUtils]: Spent 843.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 207 [2020-10-13 06:18:29,334 WARN L193 SmtUtils]: Spent 953.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 202 [2020-10-13 06:18:30,581 WARN L193 SmtUtils]: Spent 874.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 199 [2020-10-13 06:18:32,364 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 243 DAG size of output: 196 [2020-10-13 06:18:35,956 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 244 DAG size of output: 193 [2020-10-13 06:18:37,381 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 244 DAG size of output: 188 [2020-10-13 06:18:40,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:18:40,594 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-13 06:18:40,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:18:40,596 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 193 [2020-10-13 06:18:40,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:18:40,614 INFO L225 Difference]: With dead ends: 737 [2020-10-13 06:18:40,615 INFO L226 Difference]: Without dead ends: 364 [2020-10-13 06:18:40,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2020-10-13 06:18:40,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-13 06:18:40,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-13 06:18:40,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-13 06:18:40,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-13 06:18:40,698 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 193 [2020-10-13 06:18:40,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:18:40,699 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-13 06:18:40,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 06:18:40,700 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-13 06:18:40,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-13 06:18:40,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:18:40,704 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:18:40,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:18:40,705 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:18:40,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:18:40,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1269173039, now seen corresponding path program 1 times [2020-10-13 06:18:40,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:18:40,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172883279] [2020-10-13 06:18:40,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:18:40,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:40,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:41,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:42,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:45,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:45,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-13 06:18:45,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:18:45,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4643 [2020-10-13 06:18:45,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:45,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 06:18:45,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:18:45,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 06:18:45,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:46,047 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 25 [2020-10-13 06:18:46,295 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-13 06:18:46,501 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-13 06:18:46,756 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-13 06:18:46,902 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2020-10-13 06:18:47,025 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-10-13 06:18:47,334 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:18:47,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:18:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:47,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:47,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:47,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:18:47,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:47,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 06:18:47,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:47,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:18:47,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:47,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:18:47,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:18:47,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:18:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:47,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:47,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:47,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:18:47,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:47,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 06:18:47,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:47,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 06:18:47,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:18:47,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:18:47,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:18:48,029 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 83 [2020-10-13 06:18:48,678 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:18:48,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172883279] [2020-10-13 06:18:48,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:18:48,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 06:18:48,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55769675] [2020-10-13 06:18:48,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 06:18:48,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:18:48,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 06:18:48,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2020-10-13 06:18:48,682 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 17 states. [2020-10-13 06:18:48,956 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-13 06:18:49,379 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2020-10-13 06:18:49,595 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2020-10-13 06:18:49,851 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2020-10-13 06:18:50,474 WARN L193 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 171 [2020-10-13 06:18:51,136 WARN L193 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 179 [2020-10-13 06:18:52,251 WARN L193 SmtUtils]: Spent 922.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 178 [2020-10-13 06:18:54,048 WARN L193 SmtUtils]: Spent 898.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 177 [2020-10-13 06:18:54,281 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 83 [2020-10-13 06:18:56,856 WARN L193 SmtUtils]: Spent 884.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 176 [2020-10-13 06:19:00,027 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 175 [2020-10-13 06:19:00,907 WARN L193 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 173 [2020-10-13 06:19:03,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:19:03,752 INFO L93 Difference]: Finished difference Result 995 states and 1608 transitions. [2020-10-13 06:19:03,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 06:19:03,754 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 204 [2020-10-13 06:19:03,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:19:03,768 INFO L225 Difference]: With dead ends: 995 [2020-10-13 06:19:03,769 INFO L226 Difference]: Without dead ends: 752 [2020-10-13 06:19:03,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=219, Invalid=593, Unknown=0, NotChecked=0, Total=812 [2020-10-13 06:19:03,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2020-10-13 06:19:03,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 738. [2020-10-13 06:19:03,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-10-13 06:19:03,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1045 transitions. [2020-10-13 06:19:03,831 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1045 transitions. Word has length 204 [2020-10-13 06:19:03,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:19:03,831 INFO L479 AbstractCegarLoop]: Abstraction has 738 states and 1045 transitions. [2020-10-13 06:19:03,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 06:19:03,832 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1045 transitions. [2020-10-13 06:19:03,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-13 06:19:03,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:19:03,836 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:19:03,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:19:03,836 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:19:03,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:19:03,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1858890851, now seen corresponding path program 1 times [2020-10-13 06:19:03,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:19:03,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761266560] [2020-10-13 06:19:03,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:19:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:03,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:04,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:04,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:04,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-13 06:19:04,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:19:04,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 836 [2020-10-13 06:19:04,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:04,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:04,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:19:04,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-13 06:19:04,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:05,573 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:19:05,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:19:05,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:05,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:05,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:05,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:19:05,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:05,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:19:05,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:05,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:19:05,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:05,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:19:05,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:05,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:19:05,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:05,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:05,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:05,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:19:05,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:05,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 06:19:05,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:05,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:19:05,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:05,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:19:05,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:06,236 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 06:19:06,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761266560] [2020-10-13 06:19:06,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:19:06,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:19:06,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320159632] [2020-10-13 06:19:06,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:19:06,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:19:06,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:19:06,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:19:06,239 INFO L87 Difference]: Start difference. First operand 738 states and 1045 transitions. Second operand 5 states. [2020-10-13 06:19:06,603 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-13 06:19:09,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:19:09,350 INFO L93 Difference]: Finished difference Result 1713 states and 2599 transitions. [2020-10-13 06:19:09,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:19:09,352 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2020-10-13 06:19:09,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:19:09,367 INFO L225 Difference]: With dead ends: 1713 [2020-10-13 06:19:09,368 INFO L226 Difference]: Without dead ends: 728 [2020-10-13 06:19:09,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:19:09,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-10-13 06:19:09,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 726. [2020-10-13 06:19:09,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 726 states. [2020-10-13 06:19:09,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 977 transitions. [2020-10-13 06:19:09,411 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 977 transitions. Word has length 214 [2020-10-13 06:19:09,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:19:09,412 INFO L479 AbstractCegarLoop]: Abstraction has 726 states and 977 transitions. [2020-10-13 06:19:09,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:19:09,412 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 977 transitions. [2020-10-13 06:19:09,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-13 06:19:09,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:19:09,416 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:19:09,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:19:09,417 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:19:09,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:19:09,417 INFO L82 PathProgramCache]: Analyzing trace with hash 350263467, now seen corresponding path program 1 times [2020-10-13 06:19:09,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:19:09,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794204532] [2020-10-13 06:19:09,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:19:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:09,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:10,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:10,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-13 06:19:10,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:10,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1087 [2020-10-13 06:19:10,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:10,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:19:10,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:19:10,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 06:19:10,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:10,780 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:19:10,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:19:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:10,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:10,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:10,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:19:10,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:10,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 06:19:10,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:10,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:19:10,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:10,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:19:10,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:10,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:19:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:10,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:11,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:11,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:19:11,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:11,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-13 06:19:11,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:11,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:11,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:19:11,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:19:11,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:11,200 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:19:11,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794204532] [2020-10-13 06:19:11,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:19:11,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 06:19:11,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211965365] [2020-10-13 06:19:11,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:19:11,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:19:11,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:19:11,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:19:11,205 INFO L87 Difference]: Start difference. First operand 726 states and 977 transitions. Second operand 7 states. [2020-10-13 06:19:11,341 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:19:13,570 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:19:14,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:19:14,392 INFO L93 Difference]: Finished difference Result 1990 states and 2763 transitions. [2020-10-13 06:19:14,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:19:14,393 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 225 [2020-10-13 06:19:14,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:19:14,402 INFO L225 Difference]: With dead ends: 1990 [2020-10-13 06:19:14,402 INFO L226 Difference]: Without dead ends: 1373 [2020-10-13 06:19:14,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:19:14,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2020-10-13 06:19:14,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 1336. [2020-10-13 06:19:14,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1336 states. [2020-10-13 06:19:14,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 1767 transitions. [2020-10-13 06:19:14,448 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 1767 transitions. Word has length 225 [2020-10-13 06:19:14,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:19:14,448 INFO L479 AbstractCegarLoop]: Abstraction has 1336 states and 1767 transitions. [2020-10-13 06:19:14,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:19:14,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 1767 transitions. [2020-10-13 06:19:14,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-13 06:19:14,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:19:14,454 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:19:14,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:19:14,454 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:19:14,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:19:14,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1605296383, now seen corresponding path program 1 times [2020-10-13 06:19:14,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:19:14,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223691594] [2020-10-13 06:19:14,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:19:14,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:14,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:14,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:15,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:17,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:17,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-13 06:19:17,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:19:17,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2699 [2020-10-13 06:19:17,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:17,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 06:19:17,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:19:17,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-13 06:19:17,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:17,710 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 34 [2020-10-13 06:19:17,831 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:19:17,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:19:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:17,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:17,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:17,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:19:17,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:17,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:19:17,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:17,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:19:17,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:17,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:19:17,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:17,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:19:17,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:17,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:17,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:17,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:19:17,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:17,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 06:19:17,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:17,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:19:17,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:17,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:19:17,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:18,303 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:19:18,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223691594] [2020-10-13 06:19:18,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:19:18,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 06:19:18,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988385134] [2020-10-13 06:19:18,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 06:19:18,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:19:18,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 06:19:18,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:19:18,305 INFO L87 Difference]: Start difference. First operand 1336 states and 1767 transitions. Second operand 6 states. [2020-10-13 06:19:18,696 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-13 06:19:19,775 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-13 06:19:21,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:19:21,828 INFO L93 Difference]: Finished difference Result 3129 states and 4352 transitions. [2020-10-13 06:19:21,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 06:19:21,829 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 228 [2020-10-13 06:19:21,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:19:21,838 INFO L225 Difference]: With dead ends: 3129 [2020-10-13 06:19:21,838 INFO L226 Difference]: Without dead ends: 1762 [2020-10-13 06:19:21,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:19:21,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1762 states. [2020-10-13 06:19:21,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1762 to 1675. [2020-10-13 06:19:21,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1675 states. [2020-10-13 06:19:21,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 2128 transitions. [2020-10-13 06:19:21,893 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 2128 transitions. Word has length 228 [2020-10-13 06:19:21,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:19:21,894 INFO L479 AbstractCegarLoop]: Abstraction has 1675 states and 2128 transitions. [2020-10-13 06:19:21,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 06:19:21,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 2128 transitions. [2020-10-13 06:19:21,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-10-13 06:19:21,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:19:21,901 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:19:21,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:19:21,901 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:19:21,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:19:21,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1344427363, now seen corresponding path program 1 times [2020-10-13 06:19:21,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:19:21,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894343072] [2020-10-13 06:19:21,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:19:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:21,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:22,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:23,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:25,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:26,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:26,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-13 06:19:26,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:19:26,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4194 [2020-10-13 06:19:26,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:26,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:26,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:19:26,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 06:19:26,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:26,323 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:19:26,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:19:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:26,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:26,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:26,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:19:26,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:26,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:19:26,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:26,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:19:26,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:26,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:19:26,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:26,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:19:26,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:26,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:26,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:26,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:19:26,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:26,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 06:19:26,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:26,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:19:26,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:26,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:19:26,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:26,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:19:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:26,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:26,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:26,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:19:26,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:26,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-13 06:19:26,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:26,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:26,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:19:26,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 06:19:26,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:26,876 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:19:26,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894343072] [2020-10-13 06:19:26,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:19:26,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:19:26,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103565591] [2020-10-13 06:19:26,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:19:26,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:19:26,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:19:26,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:19:26,878 INFO L87 Difference]: Start difference. First operand 1675 states and 2128 transitions. Second operand 7 states. [2020-10-13 06:19:27,272 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:19:28,356 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:19:30,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:19:30,194 INFO L93 Difference]: Finished difference Result 4240 states and 5738 transitions. [2020-10-13 06:19:30,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:19:30,195 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 286 [2020-10-13 06:19:30,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:19:30,210 INFO L225 Difference]: With dead ends: 4240 [2020-10-13 06:19:30,210 INFO L226 Difference]: Without dead ends: 2674 [2020-10-13 06:19:30,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 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 06:19:30,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2020-10-13 06:19:30,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2583. [2020-10-13 06:19:30,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2583 states. [2020-10-13 06:19:30,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2583 states to 2583 states and 3329 transitions. [2020-10-13 06:19:30,300 INFO L78 Accepts]: Start accepts. Automaton has 2583 states and 3329 transitions. Word has length 286 [2020-10-13 06:19:30,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:19:30,301 INFO L479 AbstractCegarLoop]: Abstraction has 2583 states and 3329 transitions. [2020-10-13 06:19:30,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:19:30,301 INFO L276 IsEmpty]: Start isEmpty. Operand 2583 states and 3329 transitions. [2020-10-13 06:19:30,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-13 06:19:30,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:19:30,313 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:19:30,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:19:30,314 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:19:30,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:19:30,314 INFO L82 PathProgramCache]: Analyzing trace with hash -122337030, now seen corresponding path program 1 times [2020-10-13 06:19:30,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:19:30,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978069444] [2020-10-13 06:19:30,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:19:30,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:30,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:30,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:30,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:34,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:34,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 303 [2020-10-13 06:19:34,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:19:34,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3867 [2020-10-13 06:19:34,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:34,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:34,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:19:34,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-13 06:19:34,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:34,452 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:19:34,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:19:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:34,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:34,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:34,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:19:34,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:34,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:19:34,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:34,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:19:34,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:34,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:19:34,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:34,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:19:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:34,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:34,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:34,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:19:34,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:34,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 06:19:34,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:34,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:19:34,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:34,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:19:34,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:34,757 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:19:34,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978069444] [2020-10-13 06:19:34,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:19:34,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:19:34,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170846383] [2020-10-13 06:19:34,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:19:34,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:19:34,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:19:34,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:19:34,760 INFO L87 Difference]: Start difference. First operand 2583 states and 3329 transitions. Second operand 5 states. [2020-10-13 06:19:35,072 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:19:37,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:19:37,282 INFO L93 Difference]: Finished difference Result 5939 states and 7925 transitions. [2020-10-13 06:19:37,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:19:37,292 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 293 [2020-10-13 06:19:37,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:19:37,311 INFO L225 Difference]: With dead ends: 5939 [2020-10-13 06:19:37,311 INFO L226 Difference]: Without dead ends: 3465 [2020-10-13 06:19:37,319 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 06:19:37,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3465 states. [2020-10-13 06:19:37,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3465 to 3449. [2020-10-13 06:19:37,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3449 states. [2020-10-13 06:19:37,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3449 states to 3449 states and 4499 transitions. [2020-10-13 06:19:37,425 INFO L78 Accepts]: Start accepts. Automaton has 3449 states and 4499 transitions. Word has length 293 [2020-10-13 06:19:37,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:19:37,426 INFO L479 AbstractCegarLoop]: Abstraction has 3449 states and 4499 transitions. [2020-10-13 06:19:37,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:19:37,427 INFO L276 IsEmpty]: Start isEmpty. Operand 3449 states and 4499 transitions. [2020-10-13 06:19:37,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-13 06:19:37,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:19:37,442 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:19:37,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:19:37,443 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:19:37,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:19:37,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1612938022, now seen corresponding path program 1 times [2020-10-13 06:19:37,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:19:37,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777325000] [2020-10-13 06:19:37,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:19:37,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:37,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:37,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:40,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:42,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:42,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-13 06:19:42,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:19:42,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5094 [2020-10-13 06:19:42,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:42,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:42,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-13 06:19:42,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-13 06:19:42,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:42,989 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:19:42,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:19:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:42,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:43,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:43,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:19:43,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:43,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:19:43,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:43,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:19:43,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:43,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:19:43,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:19:43,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:19:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:43,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:43,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:43,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 06:19:43,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:43,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-13 06:19:43,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:43,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:19:43,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:43,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 06:19:43,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:43,569 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 102 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:19:43,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777325000] [2020-10-13 06:19:43,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:19:43,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:19:43,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567273736] [2020-10-13 06:19:43,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:19:43,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:19:43,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:19:43,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:19:43,572 INFO L87 Difference]: Start difference. First operand 3449 states and 4499 transitions. Second operand 5 states. [2020-10-13 06:19:43,734 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:19:46,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:19:46,317 INFO L93 Difference]: Finished difference Result 9399 states and 12798 transitions. [2020-10-13 06:19:46,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:19:46,322 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 299 [2020-10-13 06:19:46,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:19:46,353 INFO L225 Difference]: With dead ends: 9399 [2020-10-13 06:19:46,353 INFO L226 Difference]: Without dead ends: 6059 [2020-10-13 06:19:46,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:19:46,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6059 states. [2020-10-13 06:19:46,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6059 to 6033. [2020-10-13 06:19:46,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6033 states. [2020-10-13 06:19:46,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6033 states to 6033 states and 7947 transitions. [2020-10-13 06:19:46,518 INFO L78 Accepts]: Start accepts. Automaton has 6033 states and 7947 transitions. Word has length 299 [2020-10-13 06:19:46,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:19:46,519 INFO L479 AbstractCegarLoop]: Abstraction has 6033 states and 7947 transitions. [2020-10-13 06:19:46,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:19:46,519 INFO L276 IsEmpty]: Start isEmpty. Operand 6033 states and 7947 transitions. [2020-10-13 06:19:46,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-13 06:19:46,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:19:46,543 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:19:46,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:19:46,543 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:19:46,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:19:46,544 INFO L82 PathProgramCache]: Analyzing trace with hash -2032139837, now seen corresponding path program 1 times [2020-10-13 06:19:46,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:19:46,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102674846] [2020-10-13 06:19:46,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:19:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:46,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:46,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:48,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:50,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:51,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:51,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-13 06:19:51,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:19:51,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 06:19:51,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:51,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:51,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:19:51,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:19:51,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:51,808 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:19:51,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:19:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:51,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:51,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:51,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:19:51,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:51,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 06:19:51,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:51,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:19:51,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:51,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:19:51,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:51,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:19:51,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:51,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:52,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:52,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:19:52,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:52,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 06:19:52,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:52,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:19:52,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:52,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:19:52,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:52,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:19:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:52,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:52,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:52,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:19:52,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:52,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:19:52,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:52,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:52,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:19:52,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:19:52,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:52,160 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 107 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:19:52,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102674846] [2020-10-13 06:19:52,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:19:52,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:19:52,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576707708] [2020-10-13 06:19:52,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:19:52,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:19:52,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:19:52,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:19:52,162 INFO L87 Difference]: Start difference. First operand 6033 states and 7947 transitions. Second operand 7 states. [2020-10-13 06:19:52,299 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:19:53,213 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:19:54,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:19:54,934 INFO L93 Difference]: Finished difference Result 16596 states and 22876 transitions. [2020-10-13 06:19:54,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:19:54,939 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 303 [2020-10-13 06:19:54,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:19:54,998 INFO L225 Difference]: With dead ends: 16596 [2020-10-13 06:19:54,999 INFO L226 Difference]: Without dead ends: 10672 [2020-10-13 06:19:55,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 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 06:19:55,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10672 states. [2020-10-13 06:19:55,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10672 to 10584. [2020-10-13 06:19:55,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10584 states. [2020-10-13 06:19:55,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10584 states to 10584 states and 13599 transitions. [2020-10-13 06:19:55,276 INFO L78 Accepts]: Start accepts. Automaton has 10584 states and 13599 transitions. Word has length 303 [2020-10-13 06:19:55,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:19:55,277 INFO L479 AbstractCegarLoop]: Abstraction has 10584 states and 13599 transitions. [2020-10-13 06:19:55,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:19:55,278 INFO L276 IsEmpty]: Start isEmpty. Operand 10584 states and 13599 transitions. [2020-10-13 06:19:55,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-13 06:19:55,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:19:55,310 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:19:55,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:19:55,310 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:19:55,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:19:55,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1570043498, now seen corresponding path program 1 times [2020-10-13 06:19:55,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:19:55,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722248659] [2020-10-13 06:19:55,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:19:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:55,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:55,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:56,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:58,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:58,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-13 06:19:58,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:19:58,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3188 [2020-10-13 06:19:58,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:58,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:58,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-10-13 06:19:58,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:19:58,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:58,727 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:19:58,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:19:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:58,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:58,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:58,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:19:58,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:58,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:19:58,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:58,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:19:58,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:58,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:19:58,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:58,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:19:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:58,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:58,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:58,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:19:58,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:58,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 06:19:58,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:58,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:19:58,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:58,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:19:58,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:58,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:19:58,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:58,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:58,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:58,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 06:19:58,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:58,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 06:19:58,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:58,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:19:58,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:58,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 06:19:58,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:58,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-13 06:19:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:58,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:58,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:58,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:19:58,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:58,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:19:58,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:58,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:58,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:19:58,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:19:58,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:59,135 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 06:19:59,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722248659] [2020-10-13 06:19:59,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:19:59,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:19:59,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019519222] [2020-10-13 06:19:59,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:19:59,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:19:59,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:19:59,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:19:59,137 INFO L87 Difference]: Start difference. First operand 10584 states and 13599 transitions. Second operand 7 states. [2020-10-13 06:19:59,441 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:20:00,415 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:20:03,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:20:03,741 INFO L93 Difference]: Finished difference Result 40152 states and 57650 transitions. [2020-10-13 06:20:03,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:20:03,742 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 316 [2020-10-13 06:20:03,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:20:03,912 INFO L225 Difference]: With dead ends: 40152 [2020-10-13 06:20:03,912 INFO L226 Difference]: Without dead ends: 29677 [2020-10-13 06:20:03,967 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 06:20:04,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29677 states. [2020-10-13 06:20:04,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29677 to 29169. [2020-10-13 06:20:04,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29169 states. [2020-10-13 06:20:04,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29169 states to 29169 states and 37380 transitions. [2020-10-13 06:20:04,804 INFO L78 Accepts]: Start accepts. Automaton has 29169 states and 37380 transitions. Word has length 316 [2020-10-13 06:20:04,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:20:04,805 INFO L479 AbstractCegarLoop]: Abstraction has 29169 states and 37380 transitions. [2020-10-13 06:20:04,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:20:04,805 INFO L276 IsEmpty]: Start isEmpty. Operand 29169 states and 37380 transitions. [2020-10-13 06:20:04,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-13 06:20:04,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:20:04,889 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:20:04,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 06:20:04,889 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:20:04,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:20:04,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1451748101, now seen corresponding path program 1 times [2020-10-13 06:20:04,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:20:04,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942507387] [2020-10-13 06:20:04,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:20:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:05,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:05,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:07,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:08,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:10,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:10,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-13 06:20:10,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:20:10,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 06:20:10,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:10,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:10,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:20:10,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 06:20:10,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:10,319 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:20:10,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:20:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:10,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:10,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:10,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:20:10,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:10,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:20:10,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:10,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:10,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:10,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:10,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:10,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:20:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:10,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:10,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:10,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:20:10,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:10,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 06:20:10,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:10,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:20:10,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:10,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:20:10,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:10,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:20:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:10,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:10,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:10,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 06:20:10,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:10,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-13 06:20:10,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:10,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:10,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:20:10,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 06:20:10,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:10,848 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:20:10,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942507387] [2020-10-13 06:20:10,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:20:10,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:20:10,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093902932] [2020-10-13 06:20:10,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:20:10,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:20:10,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:20:10,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:20:10,851 INFO L87 Difference]: Start difference. First operand 29169 states and 37380 transitions. Second operand 7 states. [2020-10-13 06:20:11,066 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:20:11,403 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:20:14,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:20:14,847 INFO L93 Difference]: Finished difference Result 72074 states and 94317 transitions. [2020-10-13 06:20:14,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:20:14,848 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 324 [2020-10-13 06:20:14,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:20:15,014 INFO L225 Difference]: With dead ends: 72074 [2020-10-13 06:20:15,014 INFO L226 Difference]: Without dead ends: 43014 [2020-10-13 06:20:15,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 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 06:20:15,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43014 states. [2020-10-13 06:20:15,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43014 to 42342. [2020-10-13 06:20:15,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42342 states. [2020-10-13 06:20:15,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42342 states to 42342 states and 52192 transitions. [2020-10-13 06:20:15,947 INFO L78 Accepts]: Start accepts. Automaton has 42342 states and 52192 transitions. Word has length 324 [2020-10-13 06:20:15,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:20:15,947 INFO L479 AbstractCegarLoop]: Abstraction has 42342 states and 52192 transitions. [2020-10-13 06:20:15,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:20:15,948 INFO L276 IsEmpty]: Start isEmpty. Operand 42342 states and 52192 transitions. [2020-10-13 06:20:16,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-13 06:20:16,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:20:16,020 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:20:16,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 06:20:16,021 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:20:16,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:20:16,021 INFO L82 PathProgramCache]: Analyzing trace with hash 797318925, now seen corresponding path program 1 times [2020-10-13 06:20:16,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:20:16,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855324077] [2020-10-13 06:20:16,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:20:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:17,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:17,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:18,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:18,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:20,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:20,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-13 06:20:20,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:20:20,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3012 [2020-10-13 06:20:20,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:20,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:20,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-13 06:20:20,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 06:20:20,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:20,366 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:20:20,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:20:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:20,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:20,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:20,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:20:20,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:20,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:20:20,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:20,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:20,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:20,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:20,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:20,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:20:20,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:20,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:20,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:20,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 06:20:20,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:20,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-13 06:20:20,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:20,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:20:20,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:20,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 06:20:20,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:20,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 06:20:20,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:20,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:20,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:20,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 06:20:20,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:20,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 06:20:20,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:20,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:20,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:20:20,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 06:20:20,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:20,802 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:20:20,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855324077] [2020-10-13 06:20:20,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:20:20,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:20:20,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069792965] [2020-10-13 06:20:20,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:20:20,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:20:20,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:20:20,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:20:20,804 INFO L87 Difference]: Start difference. First operand 42342 states and 52192 transitions. Second operand 7 states. [2020-10-13 06:20:20,955 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:20:21,983 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:20:23,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:20:23,955 INFO L93 Difference]: Finished difference Result 78319 states and 98027 transitions. [2020-10-13 06:20:23,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:20:23,956 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 333 [2020-10-13 06:20:23,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:20:24,106 INFO L225 Difference]: With dead ends: 78319 [2020-10-13 06:20:24,106 INFO L226 Difference]: Without dead ends: 39498 [2020-10-13 06:20:24,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 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 06:20:24,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39498 states. [2020-10-13 06:20:25,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39498 to 39243. [2020-10-13 06:20:25,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39243 states. [2020-10-13 06:20:25,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39243 states to 39243 states and 47116 transitions. [2020-10-13 06:20:25,310 INFO L78 Accepts]: Start accepts. Automaton has 39243 states and 47116 transitions. Word has length 333 [2020-10-13 06:20:25,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:20:25,311 INFO L479 AbstractCegarLoop]: Abstraction has 39243 states and 47116 transitions. [2020-10-13 06:20:25,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:20:25,311 INFO L276 IsEmpty]: Start isEmpty. Operand 39243 states and 47116 transitions. [2020-10-13 06:20:25,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-10-13 06:20:25,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:20:25,413 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:20:25,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 06:20:25,413 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:20:25,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:20:25,416 INFO L82 PathProgramCache]: Analyzing trace with hash 64898580, now seen corresponding path program 1 times [2020-10-13 06:20:25,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:20:25,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315558640] [2020-10-13 06:20:25,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:20:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:25,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:25,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:25,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:26,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:27,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:30,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:30,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-10-13 06:20:30,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:20:30,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-13 06:20:30,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:30,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:30,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-13 06:20:30,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:20:30,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:30,709 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:20:30,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:20:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:30,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:30,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:30,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:20:30,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:30,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:20:30,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:30,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:30,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:30,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:30,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:30,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:20:30,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:30,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:30,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:30,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:20:30,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:30,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 06:20:30,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:30,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:30,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:30,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:30,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:30,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:20:30,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:30,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:30,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:30,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 06:20:30,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:30,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:20:30,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:30,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:30,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:30,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:30,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:30,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-13 06:20:30,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:30,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:30,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:30,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 06:20:30,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:30,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 06:20:30,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:30,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:20:30,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:30,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 06:20:30,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:30,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-13 06:20:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:30,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:30,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:30,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:20:30,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:30,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 06:20:30,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:30,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:30,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:20:30,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:20:30,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:31,038 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 156 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-13 06:20:31,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315558640] [2020-10-13 06:20:31,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:20:31,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:20:31,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717639201] [2020-10-13 06:20:31,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:20:31,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:20:31,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:20:31,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:20:31,040 INFO L87 Difference]: Start difference. First operand 39243 states and 47116 transitions. Second operand 7 states. [2020-10-13 06:20:31,837 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:20:32,072 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:20:35,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:20:35,291 INFO L93 Difference]: Finished difference Result 79886 states and 108967 transitions. [2020-10-13 06:20:35,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:20:35,291 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 340 [2020-10-13 06:20:35,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:20:35,565 INFO L225 Difference]: With dead ends: 79886 [2020-10-13 06:20:35,566 INFO L226 Difference]: Without dead ends: 60542 [2020-10-13 06:20:35,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:20:35,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60542 states. [2020-10-13 06:20:36,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60542 to 58126. [2020-10-13 06:20:36,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58126 states. [2020-10-13 06:20:37,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58126 states to 58126 states and 68947 transitions. [2020-10-13 06:20:37,151 INFO L78 Accepts]: Start accepts. Automaton has 58126 states and 68947 transitions. Word has length 340 [2020-10-13 06:20:37,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:20:37,152 INFO L479 AbstractCegarLoop]: Abstraction has 58126 states and 68947 transitions. [2020-10-13 06:20:37,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:20:37,152 INFO L276 IsEmpty]: Start isEmpty. Operand 58126 states and 68947 transitions. [2020-10-13 06:20:37,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-10-13 06:20:37,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:20:37,242 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:20:37,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 06:20:37,243 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:20:37,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:20:37,243 INFO L82 PathProgramCache]: Analyzing trace with hash 557479496, now seen corresponding path program 1 times [2020-10-13 06:20:37,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:20:37,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379741177] [2020-10-13 06:20:37,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:20:37,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:37,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:37,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:37,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:42,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:42,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:42,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 354 [2020-10-13 06:20:42,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:20:42,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5115 [2020-10-13 06:20:42,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:42,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:42,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:20:42,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 06:20:42,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:42,693 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:20:42,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:20:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:42,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:42,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:42,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:20:42,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:42,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:20:42,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:42,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:42,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:42,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:42,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:42,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:20:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:42,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:42,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:42,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:20:42,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:42,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 06:20:42,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:42,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:20:42,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:42,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:20:42,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:42,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:20:42,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:42,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:43,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:43,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:20:43,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:43,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 06:20:43,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:43,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:43,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:20:43,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 06:20:43,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:43,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-13 06:20:43,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:43,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:43,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:43,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 06:20:43,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:43,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 06:20:43,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:43,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:43,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 06:20:43,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:43,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:20:43,373 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 156 proven. 16 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-13 06:20:43,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379741177] [2020-10-13 06:20:43,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:20:43,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:20:43,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883360533] [2020-10-13 06:20:43,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:20:43,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:20:43,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:20:43,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:20:43,377 INFO L87 Difference]: Start difference. First operand 58126 states and 68947 transitions. Second operand 7 states. [2020-10-13 06:20:43,550 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:20:45,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:20:45,432 INFO L93 Difference]: Finished difference Result 108884 states and 129165 transitions. [2020-10-13 06:20:45,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 06:20:45,432 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 340 [2020-10-13 06:20:45,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:20:45,595 INFO L225 Difference]: With dead ends: 108884 [2020-10-13 06:20:45,596 INFO L226 Difference]: Without dead ends: 53020 [2020-10-13 06:20:45,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 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 06:20:45,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53020 states. [2020-10-13 06:20:46,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53020 to 53004. [2020-10-13 06:20:46,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53004 states. [2020-10-13 06:20:46,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53004 states to 53004 states and 61482 transitions. [2020-10-13 06:20:46,598 INFO L78 Accepts]: Start accepts. Automaton has 53004 states and 61482 transitions. Word has length 340 [2020-10-13 06:20:46,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:20:46,598 INFO L479 AbstractCegarLoop]: Abstraction has 53004 states and 61482 transitions. [2020-10-13 06:20:46,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:20:46,598 INFO L276 IsEmpty]: Start isEmpty. Operand 53004 states and 61482 transitions. [2020-10-13 06:20:46,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-10-13 06:20:46,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:20:46,653 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:20:46,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 06:20:46,653 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:20:46,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:20:46,654 INFO L82 PathProgramCache]: Analyzing trace with hash -914136319, now seen corresponding path program 1 times [2020-10-13 06:20:46,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:20:46,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102734399] [2020-10-13 06:20:46,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:20:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:46,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:46,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:48,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:50,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:51,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:51,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 359 [2020-10-13 06:20:51,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:20:51,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 06:20:51,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:51,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:51,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-13 06:20:51,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:20:51,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:51,996 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:20:51,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:20:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:52,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:52,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:52,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:20:52,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:52,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:20:52,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:52,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:52,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:52,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:52,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:20:52,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:20:52,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:52,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:52,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:52,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 06:20:52,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:52,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-13 06:20:52,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:52,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:20:52,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:52,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 06:20:52,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:52,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 06:20:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:52,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:52,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:52,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:20:52,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:52,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 06:20:52,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:52,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:52,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:20:52,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:20:52,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:52,737 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 14 [2020-10-13 06:20:52,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-13 06:20:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:52,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:52,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:52,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:20:52,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:52,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 06:20:52,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:52,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:52,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-13 06:20:52,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:52,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:52,863 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 158 proven. 13 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-13 06:20:52,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102734399] [2020-10-13 06:20:52,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:20:52,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:20:52,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037619551] [2020-10-13 06:20:52,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:20:52,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:20:52,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:20:52,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:20:52,865 INFO L87 Difference]: Start difference. First operand 53004 states and 61482 transitions. Second operand 7 states. [2020-10-13 06:20:53,558 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:20:53,974 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:20:56,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:20:56,497 INFO L93 Difference]: Finished difference Result 111497 states and 132787 transitions. [2020-10-13 06:20:56,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 06:20:56,498 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 345 [2020-10-13 06:20:56,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:20:56,671 INFO L225 Difference]: With dead ends: 111497 [2020-10-13 06:20:56,671 INFO L226 Difference]: Without dead ends: 58602 [2020-10-13 06:20:56,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:20:56,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58602 states. [2020-10-13 06:20:57,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58602 to 58352. [2020-10-13 06:20:57,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58352 states. [2020-10-13 06:20:57,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58352 states to 58352 states and 67472 transitions. [2020-10-13 06:20:57,599 INFO L78 Accepts]: Start accepts. Automaton has 58352 states and 67472 transitions. Word has length 345 [2020-10-13 06:20:57,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:20:57,600 INFO L479 AbstractCegarLoop]: Abstraction has 58352 states and 67472 transitions. [2020-10-13 06:20:57,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:20:57,600 INFO L276 IsEmpty]: Start isEmpty. Operand 58352 states and 67472 transitions. [2020-10-13 06:20:57,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-10-13 06:20:57,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:20:57,664 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:20:57,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 06:20:57,664 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:20:57,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:20:57,664 INFO L82 PathProgramCache]: Analyzing trace with hash 2061765372, now seen corresponding path program 1 times [2020-10-13 06:20:57,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:20:57,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471786580] [2020-10-13 06:20:57,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:20:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:57,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:57,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:57,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:02,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:02,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:02,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:02,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 368 [2020-10-13 06:21:02,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:21:02,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 06:21:02,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:02,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:02,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:21:02,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:21:02,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:02,902 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:21:02,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:21:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:02,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:02,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:02,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:21:02,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:02,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:21:02,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:02,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:02,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:02,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:02,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:02,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:21:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:03,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:03,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:03,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:21:03,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:03,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 06:21:03,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:03,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:21:03,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:03,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:21:03,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:03,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:21:03,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:03,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:03,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:03,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 06:21:03,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:03,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 06:21:03,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:03,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:03,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:21:03,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:21:03,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:03,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-13 06:21:03,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:03,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:03,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:03,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:21:03,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:03,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:21:03,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:03,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:03,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 06:21:03,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:03,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:03,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-13 06:21:03,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:03,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:03,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:03,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:21:03,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:03,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 06:21:03,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:03,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:03,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-13 06:21:03,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:03,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:03,565 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 165 proven. 22 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-10-13 06:21:03,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471786580] [2020-10-13 06:21:03,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:21:03,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:21:03,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728716598] [2020-10-13 06:21:03,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:21:03,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:21:03,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:21:03,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:21:03,567 INFO L87 Difference]: Start difference. First operand 58352 states and 67472 transitions. Second operand 7 states. [2020-10-13 06:21:03,885 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:21:04,703 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:21:06,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:21:06,818 INFO L93 Difference]: Finished difference Result 126768 states and 150329 transitions. [2020-10-13 06:21:06,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:21:06,819 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 352 [2020-10-13 06:21:06,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:21:06,972 INFO L225 Difference]: With dead ends: 126768 [2020-10-13 06:21:06,972 INFO L226 Difference]: Without dead ends: 70364 [2020-10-13 06:21:07,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:21:07,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70364 states. [2020-10-13 06:21:07,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70364 to 69670. [2020-10-13 06:21:07,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69670 states. [2020-10-13 06:21:08,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69670 states to 69670 states and 81087 transitions. [2020-10-13 06:21:08,033 INFO L78 Accepts]: Start accepts. Automaton has 69670 states and 81087 transitions. Word has length 352 [2020-10-13 06:21:08,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:21:08,034 INFO L479 AbstractCegarLoop]: Abstraction has 69670 states and 81087 transitions. [2020-10-13 06:21:08,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:21:08,034 INFO L276 IsEmpty]: Start isEmpty. Operand 69670 states and 81087 transitions. [2020-10-13 06:21:08,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-10-13 06:21:08,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:21:08,096 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:21:08,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 06:21:08,097 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:21:08,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:21:08,097 INFO L82 PathProgramCache]: Analyzing trace with hash 253610703, now seen corresponding path program 1 times [2020-10-13 06:21:08,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:21:08,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86681286] [2020-10-13 06:21:08,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:21:08,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:08,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:08,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:13,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:13,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 380 [2020-10-13 06:21:13,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:21:13,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 06:21:13,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:13,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 06:21:13,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:21:13,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-13 06:21:13,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:13,381 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:21:13,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:21:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:13,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:13,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:13,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:21:13,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:13,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:21:13,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:13,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:21:13,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:13,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:21:13,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:13,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:21:13,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:13,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:13,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:13,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:21:13,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:13,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 06:21:13,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:13,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:13,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:21:13,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 06:21:13,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:13,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:21:13,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:13,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:14,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:14,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 06:21:14,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:14,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 541 [2020-10-13 06:21:14,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:14,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:14,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:21:14,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-13 06:21:14,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:14,696 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 168 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 06:21:14,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [86681286] [2020-10-13 06:21:14,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:21:14,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:21:14,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271927270] [2020-10-13 06:21:14,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:21:14,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:21:14,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:21:14,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:21:14,698 INFO L87 Difference]: Start difference. First operand 69670 states and 81087 transitions. Second operand 8 states. [2020-10-13 06:21:14,838 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:21:16,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:21:16,677 INFO L93 Difference]: Finished difference Result 98978 states and 114525 transitions. [2020-10-13 06:21:16,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 06:21:16,678 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 368 [2020-10-13 06:21:16,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:21:16,806 INFO L225 Difference]: With dead ends: 98978 [2020-10-13 06:21:16,806 INFO L226 Difference]: Without dead ends: 69552 [2020-10-13 06:21:16,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-13 06:21:16,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69552 states. [2020-10-13 06:21:17,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69552 to 69522. [2020-10-13 06:21:17,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69522 states. [2020-10-13 06:21:17,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69522 states to 69522 states and 80849 transitions. [2020-10-13 06:21:17,707 INFO L78 Accepts]: Start accepts. Automaton has 69522 states and 80849 transitions. Word has length 368 [2020-10-13 06:21:17,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:21:17,707 INFO L479 AbstractCegarLoop]: Abstraction has 69522 states and 80849 transitions. [2020-10-13 06:21:17,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:21:17,707 INFO L276 IsEmpty]: Start isEmpty. Operand 69522 states and 80849 transitions. [2020-10-13 06:21:17,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-10-13 06:21:17,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:21:17,760 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:21:17,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 06:21:17,760 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:21:17,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:21:17,761 INFO L82 PathProgramCache]: Analyzing trace with hash -78347824, now seen corresponding path program 1 times [2020-10-13 06:21:17,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:21:17,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219973868] [2020-10-13 06:21:17,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:21:17,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:17,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:18,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:20,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:20,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 388 [2020-10-13 06:21:20,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:21:20,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2185 [2020-10-13 06:21:20,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:20,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:20,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:21:20,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-13 06:21:20,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:20,202 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:21:20,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:21:20,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:20,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:20,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:20,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:21:20,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:20,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:21:20,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:20,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:20,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:20,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:20,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:20,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:21:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:20,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:20,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:20,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:21:20,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:20,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 06:21:20,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:20,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:21:20,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:20,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:21:20,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:20,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:21:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:20,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:20,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:20,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 06:21:20,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:20,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-13 06:21:20,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:20,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:20,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:21:20,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 06:21:20,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:20,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 06:21:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:20,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:20,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:20,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 06:21:20,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:20,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 06:21:20,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:20,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:20,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 06:21:20,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:20,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:21,079 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 208 proven. 33 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-13 06:21:21,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219973868] [2020-10-13 06:21:21,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:21:21,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:21:21,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233029095] [2020-10-13 06:21:21,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:21:21,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:21:21,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:21:21,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:21:21,081 INFO L87 Difference]: Start difference. First operand 69522 states and 80849 transitions. Second operand 7 states. [2020-10-13 06:21:21,229 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:21:24,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:21:24,911 INFO L93 Difference]: Finished difference Result 156220 states and 185028 transitions. [2020-10-13 06:21:24,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:21:24,912 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 374 [2020-10-13 06:21:24,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:21:25,113 INFO L225 Difference]: With dead ends: 156220 [2020-10-13 06:21:25,114 INFO L226 Difference]: Without dead ends: 92747 [2020-10-13 06:21:25,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:21:25,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92747 states. [2020-10-13 06:21:26,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92747 to 82655. [2020-10-13 06:21:26,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82655 states. [2020-10-13 06:21:26,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82655 states to 82655 states and 96693 transitions. [2020-10-13 06:21:26,379 INFO L78 Accepts]: Start accepts. Automaton has 82655 states and 96693 transitions. Word has length 374 [2020-10-13 06:21:26,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:21:26,380 INFO L479 AbstractCegarLoop]: Abstraction has 82655 states and 96693 transitions. [2020-10-13 06:21:26,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:21:26,380 INFO L276 IsEmpty]: Start isEmpty. Operand 82655 states and 96693 transitions. [2020-10-13 06:21:26,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-13 06:21:26,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:21:26,442 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:21:26,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 06:21:26,443 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:21:26,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:21:26,443 INFO L82 PathProgramCache]: Analyzing trace with hash -694539082, now seen corresponding path program 1 times [2020-10-13 06:21:26,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:21:26,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771738440] [2020-10-13 06:21:26,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:21:26,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:26,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:26,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:26,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:31,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:31,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 392 [2020-10-13 06:21:31,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:21:31,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-13 06:21:31,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:31,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:31,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 187 [2020-10-13 06:21:31,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:21:31,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:31,729 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:21:31,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:21:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:31,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:31,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:31,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:21:31,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:31,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:21:31,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:31,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:31,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:31,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:31,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:31,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:21:31,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:31,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:31,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:31,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:21:31,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:31,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 06:21:31,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:31,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:31,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:31,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:31,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:31,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:21:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:31,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:31,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:31,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 06:21:31,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:31,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 06:21:31,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:31,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:31,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:31,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:31,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:31,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-13 06:21:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:31,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:31,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:31,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 06:21:31,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:31,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 06:21:31,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:31,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:21:31,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:31,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 06:21:31,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:32,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-13 06:21:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:32,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:32,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:32,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:21:32,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:32,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:21:32,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:32,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:32,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:21:32,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:21:32,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:32,126 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-13 06:21:32,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771738440] [2020-10-13 06:21:32,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:21:32,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:21:32,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957215231] [2020-10-13 06:21:32,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:21:32,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:21:32,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:21:32,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:21:32,128 INFO L87 Difference]: Start difference. First operand 82655 states and 96693 transitions. Second operand 7 states. [2020-10-13 06:21:32,272 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:21:33,246 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:21:35,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:21:35,454 INFO L93 Difference]: Finished difference Result 153308 states and 179046 transitions. [2020-10-13 06:21:35,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:21:35,454 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 376 [2020-10-13 06:21:35,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:21:35,582 INFO L225 Difference]: With dead ends: 153308 [2020-10-13 06:21:35,582 INFO L226 Difference]: Without dead ends: 71220 [2020-10-13 06:21:35,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 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 06:21:35,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71220 states. [2020-10-13 06:21:36,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71220 to 68413. [2020-10-13 06:21:36,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68413 states. [2020-10-13 06:21:36,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68413 states to 68413 states and 76592 transitions. [2020-10-13 06:21:36,548 INFO L78 Accepts]: Start accepts. Automaton has 68413 states and 76592 transitions. Word has length 376 [2020-10-13 06:21:36,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:21:36,549 INFO L479 AbstractCegarLoop]: Abstraction has 68413 states and 76592 transitions. [2020-10-13 06:21:36,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:21:36,549 INFO L276 IsEmpty]: Start isEmpty. Operand 68413 states and 76592 transitions. [2020-10-13 06:21:36,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2020-10-13 06:21:36,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:21:36,599 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:21:36,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 06:21:36,599 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:21:36,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:21:36,599 INFO L82 PathProgramCache]: Analyzing trace with hash -334662917, now seen corresponding path program 1 times [2020-10-13 06:21:36,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:21:36,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605135942] [2020-10-13 06:21:36,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:21:36,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:36,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:37,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:38,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:41,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:41,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 429 [2020-10-13 06:21:41,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:21:41,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-13 06:21:41,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:41,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 06:21:41,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-13 06:21:41,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-13 06:21:41,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:41,911 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:21:41,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:21:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:41,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:41,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:41,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:21:41,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:41,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:21:41,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:41,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:41,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:41,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:41,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:41,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:21:42,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:42,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:42,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:42,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 06:21:42,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:42,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-13 06:21:42,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:42,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:21:42,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:42,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 06:21:42,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:42,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 06:21:42,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:42,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:42,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:42,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 06:21:42,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:42,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 06:21:42,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:42,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 06:21:42,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:21:42,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 06:21:42,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:42,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-13 06:21:42,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:42,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:42,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:42,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 06:21:42,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:42,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-13 06:21:42,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:42,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:42,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:21:42,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 06:21:42,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:44,044 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 358 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-13 06:21:44,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605135942] [2020-10-13 06:21:44,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:21:44,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 06:21:44,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693526905] [2020-10-13 06:21:44,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 06:21:44,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:21:44,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 06:21:44,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-13 06:21:44,046 INFO L87 Difference]: Start difference. First operand 68413 states and 76592 transitions. Second operand 10 states. [2020-10-13 06:21:44,330 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 133