/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:13:52,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:13:52,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:13:52,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:13:52,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:13:52,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:13:52,294 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:13:52,296 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:13:52,297 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:13:52,298 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:13:52,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:13:52,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:13:52,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:13:52,301 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:13:52,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:13:52,306 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:13:52,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:13:52,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:13:52,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:13:52,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:13:52,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:13:52,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:13:52,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:13:52,324 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:13:52,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:13:52,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:13:52,329 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:13:52,331 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:13:52,331 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:13:52,333 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:13:52,333 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:13:52,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:13:52,334 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:13:52,335 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:13:52,336 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:13:52,336 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:13:52,337 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:13:52,337 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:13:52,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:13:52,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:13:52,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:13:52,349 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 [2020-10-14 04:13:52,392 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:13:52,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:13:52,394 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:13:52,394 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:13:52,395 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:13:52,395 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:13:52,395 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:13:52,395 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:13:52,395 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:13:52,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:13:52,396 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:13:52,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:13:52,396 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:13:52,396 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:13:52,397 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:13:52,397 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:13:52,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:13:52,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:13:52,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:13:52,399 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:13:52,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:13:52,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:13:52,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:13:52,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:13:52,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:13:52,400 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:13:52,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:13:52,401 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:13:52,401 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:13:52,401 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:13:52,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:13:52,764 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:13:52,770 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:13:52,771 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:13:52,774 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:13:52,775 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label16.c [2020-10-14 04:13:52,848 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f04b186d8/1a7f3a83f3d04a7baa3336d80f9433e5/FLAG95049b072 [2020-10-14 04:13:53,581 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:13:53,582 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label16.c [2020-10-14 04:13:53,608 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f04b186d8/1a7f3a83f3d04a7baa3336d80f9433e5/FLAG95049b072 [2020-10-14 04:13:53,667 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f04b186d8/1a7f3a83f3d04a7baa3336d80f9433e5 [2020-10-14 04:13:53,678 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:13:53,680 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:13:53,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:13:53,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:13:53,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:13:53,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:13:53" (1/1) ... [2020-10-14 04:13:53,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@490952e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:13:53, skipping insertion in model container [2020-10-14 04:13:53,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:13:53" (1/1) ... [2020-10-14 04:13:53,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:13:53,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:13:55,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:13:55,070 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:13:55,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:13:55,511 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:13:55,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:13:55 WrapperNode [2020-10-14 04:13:55,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:13:55,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:13:55,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:13:55,513 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:13:55,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:13:55" (1/1) ... [2020-10-14 04:13:55,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:13:55" (1/1) ... [2020-10-14 04:13:55,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:13:55" (1/1) ... [2020-10-14 04:13:55,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:13:55" (1/1) ... [2020-10-14 04:13:55,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:13:55" (1/1) ... [2020-10-14 04:13:55,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:13:55" (1/1) ... [2020-10-14 04:13:55,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:13:55" (1/1) ... [2020-10-14 04:13:55,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:13:55,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:13:55,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:13:55,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:13:55,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:13:55" (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 [2020-10-14 04:13:55,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:13:55,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:13:55,896 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:13:55,896 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:13:55,896 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:13:55,896 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:13:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:13:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:13:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:13:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:13:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:13:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:13:55,899 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:13:55,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:13:55,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:14:01,884 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:14:01,884 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:14:01,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:14:01 BoogieIcfgContainer [2020-10-14 04:14:01,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:14:01,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:14:01,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:14:01,901 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:14:01,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:13:53" (1/3) ... [2020-10-14 04:14:01,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@249f8931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:14:01, skipping insertion in model container [2020-10-14 04:14:01,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:13:55" (2/3) ... [2020-10-14 04:14:01,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@249f8931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:14:01, skipping insertion in model container [2020-10-14 04:14:01,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:14:01" (3/3) ... [2020-10-14 04:14:01,904 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label16.c [2020-10-14 04:14:01,915 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:14:01,923 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:14:01,937 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:14:01,962 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:14:01,962 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:14:01,962 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:14:01,962 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:14:01,963 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:14:01,963 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:14:01,963 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:14:01,963 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:14:01,994 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-14 04:14:02,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 04:14:02,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:14:02,003 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] [2020-10-14 04:14:02,004 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:14:02,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:14:02,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1134727921, now seen corresponding path program 1 times [2020-10-14 04:14:02,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:14:02,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140468099] [2020-10-14 04:14:02,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:14:02,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:02,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:02,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:02,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 04:14:02,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:02,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 392 [2020-10-14 04:14:02,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:02,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:02,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:14:02,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:14:02,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 04:14:02,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:14:02,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:14:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:02,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:02,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:02,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:14:02,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:02,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 04:14:02,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:02,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:02,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:14:02,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:02,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:14:02,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:02,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:14:02,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140468099] [2020-10-14 04:14:02,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:14:02,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:14:02,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046174403] [2020-10-14 04:14:02,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:14:02,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:14:02,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:14:02,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:14:02,811 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 5 states. [2020-10-14 04:14:14,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:14:14,123 INFO L93 Difference]: Finished difference Result 3016 states and 5791 transitions. [2020-10-14 04:14:14,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:14:14,125 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-10-14 04:14:14,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:14:14,157 INFO L225 Difference]: With dead ends: 3016 [2020-10-14 04:14:14,157 INFO L226 Difference]: Without dead ends: 2142 [2020-10-14 04:14:14,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:14:14,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2020-10-14 04:14:14,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2130. [2020-10-14 04:14:14,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2130 states. [2020-10-14 04:14:14,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2130 states to 2130 states and 3174 transitions. [2020-10-14 04:14:14,325 INFO L78 Accepts]: Start accepts. Automaton has 2130 states and 3174 transitions. Word has length 52 [2020-10-14 04:14:14,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:14:14,326 INFO L479 AbstractCegarLoop]: Abstraction has 2130 states and 3174 transitions. [2020-10-14 04:14:14,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:14:14,327 INFO L276 IsEmpty]: Start isEmpty. Operand 2130 states and 3174 transitions. [2020-10-14 04:14:14,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-14 04:14:14,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:14:14,333 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:14:14,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:14:14,333 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:14:14,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:14:14,334 INFO L82 PathProgramCache]: Analyzing trace with hash -2109224339, now seen corresponding path program 1 times [2020-10-14 04:14:14,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:14:14,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497976017] [2020-10-14 04:14:14,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:14:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:14,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:14,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:15,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:15,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 04:14:15,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:14:15,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 724 [2020-10-14 04:14:15,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:15,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:15,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:14:15,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 04:14:15,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 04:14:15,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:14:15,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:14:15,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:15,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:15,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:15,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:14:15,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:15,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:14:15,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:15,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:15,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:14:15,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:15,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:14:15,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:15,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:14:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:15,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:15,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:15,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 04:14:15,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:15,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 04:14:15,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:15,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:15,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:14:15,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:15,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 04:14:15,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:15,337 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:14:15,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497976017] [2020-10-14 04:14:15,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:14:15,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:14:15,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112500378] [2020-10-14 04:14:15,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:14:15,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:14:15,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:14:15,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:14:15,341 INFO L87 Difference]: Start difference. First operand 2130 states and 3174 transitions. Second operand 5 states. [2020-10-14 04:14:23,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:14:23,142 INFO L93 Difference]: Finished difference Result 6404 states and 9604 transitions. [2020-10-14 04:14:23,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:14:23,143 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-14 04:14:23,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:14:23,170 INFO L225 Difference]: With dead ends: 6404 [2020-10-14 04:14:23,170 INFO L226 Difference]: Without dead ends: 4280 [2020-10-14 04:14:23,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:14:23,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4280 states. [2020-10-14 04:14:23,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4280 to 4276. [2020-10-14 04:14:23,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4276 states. [2020-10-14 04:14:23,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4276 states to 4276 states and 5799 transitions. [2020-10-14 04:14:23,296 INFO L78 Accepts]: Start accepts. Automaton has 4276 states and 5799 transitions. Word has length 121 [2020-10-14 04:14:23,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:14:23,298 INFO L479 AbstractCegarLoop]: Abstraction has 4276 states and 5799 transitions. [2020-10-14 04:14:23,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:14:23,298 INFO L276 IsEmpty]: Start isEmpty. Operand 4276 states and 5799 transitions. [2020-10-14 04:14:23,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-14 04:14:23,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:14:23,308 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:14:23,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:14:23,309 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:14:23,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:14:23,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1821965093, now seen corresponding path program 1 times [2020-10-14 04:14:23,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:14:23,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813188474] [2020-10-14 04:14:23,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:14:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:23,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:23,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:23,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:23,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 04:14:23,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:14:23,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 605 [2020-10-14 04:14:23,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:23,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:23,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:14:23,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-14 04:14:23,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 04:14:23,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:24,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:14:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:24,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:24,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:24,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:14:24,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:24,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:14:24,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:24,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:24,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:14:24,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:24,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:14:24,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:24,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:14:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:24,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:24,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:24,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:14:24,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:24,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 04:14:24,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:24,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:24,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:14:24,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:24,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 04:14:24,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:24,181 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:14:24,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813188474] [2020-10-14 04:14:24,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:14:24,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:14:24,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321483769] [2020-10-14 04:14:24,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:14:24,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:14:24,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:14:24,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:14:24,184 INFO L87 Difference]: Start difference. First operand 4276 states and 5799 transitions. Second operand 5 states. [2020-10-14 04:14:34,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:14:34,132 INFO L93 Difference]: Finished difference Result 12804 states and 17575 transitions. [2020-10-14 04:14:34,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:14:34,134 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-14 04:14:34,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:14:34,177 INFO L225 Difference]: With dead ends: 12804 [2020-10-14 04:14:34,177 INFO L226 Difference]: Without dead ends: 8534 [2020-10-14 04:14:34,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:14:34,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8534 states. [2020-10-14 04:14:34,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8534 to 7820. [2020-10-14 04:14:34,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7820 states. [2020-10-14 04:14:34,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7820 states to 7820 states and 9976 transitions. [2020-10-14 04:14:34,400 INFO L78 Accepts]: Start accepts. Automaton has 7820 states and 9976 transitions. Word has length 125 [2020-10-14 04:14:34,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:14:34,402 INFO L479 AbstractCegarLoop]: Abstraction has 7820 states and 9976 transitions. [2020-10-14 04:14:34,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:14:34,402 INFO L276 IsEmpty]: Start isEmpty. Operand 7820 states and 9976 transitions. [2020-10-14 04:14:34,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 04:14:34,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:14:34,414 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:14:34,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:14:34,415 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:14:34,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:14:34,415 INFO L82 PathProgramCache]: Analyzing trace with hash 755198428, now seen corresponding path program 1 times [2020-10-14 04:14:34,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:14:34,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848589798] [2020-10-14 04:14:34,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:14:34,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:34,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:34,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:35,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:35,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:35,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 04:14:35,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:14:35,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1168 [2020-10-14 04:14:35,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:35,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:35,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:14:35,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-14 04:14:35,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 04:14:35,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:35,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:14:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:35,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:35,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:35,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:14:35,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:35,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:14:35,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:35,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:35,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:14:35,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:35,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:14:35,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:35,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:14:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:35,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:35,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:35,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 04:14:35,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:35,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 04:14:35,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:35,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:35,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:14:35,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:35,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 04:14:35,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:14:35,850 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:14:35,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848589798] [2020-10-14 04:14:35,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:14:35,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:14:35,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384010781] [2020-10-14 04:14:35,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:14:35,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:14:35,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:14:35,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:14:35,853 INFO L87 Difference]: Start difference. First operand 7820 states and 9976 transitions. Second operand 5 states. [2020-10-14 04:14:43,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:14:43,974 INFO L93 Difference]: Finished difference Result 22021 states and 28445 transitions. [2020-10-14 04:14:43,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:14:43,982 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-14 04:14:43,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:14:44,048 INFO L225 Difference]: With dead ends: 22021 [2020-10-14 04:14:44,048 INFO L226 Difference]: Without dead ends: 14207 [2020-10-14 04:14:44,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:14:44,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14207 states. [2020-10-14 04:14:44,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14207 to 14195. [2020-10-14 04:14:44,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14195 states. [2020-10-14 04:14:44,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14195 states to 14195 states and 17009 transitions. [2020-10-14 04:14:44,351 INFO L78 Accepts]: Start accepts. Automaton has 14195 states and 17009 transitions. Word has length 146 [2020-10-14 04:14:44,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:14:44,352 INFO L479 AbstractCegarLoop]: Abstraction has 14195 states and 17009 transitions. [2020-10-14 04:14:44,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:14:44,352 INFO L276 IsEmpty]: Start isEmpty. Operand 14195 states and 17009 transitions. [2020-10-14 04:14:44,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-14 04:14:44,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:14:44,355 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:14:44,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:14:44,355 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:14:44,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:14:44,355 INFO L82 PathProgramCache]: Analyzing trace with hash 433990136, now seen corresponding path program 1 times [2020-10-14 04:14:44,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:14:44,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723375646] [2020-10-14 04:14:44,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:14:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:44,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:44,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:44,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:44,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 04:14:44,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:14:44,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 493 [2020-10-14 04:14:44,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:44,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:44,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:14:44,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-14 04:14:44,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 04:14:44,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:44,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:14:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:44,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:44,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:44,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:14:44,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:44,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:14:44,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:44,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:44,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:14:44,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:44,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:14:44,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:44,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:14:44,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:44,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:45,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:45,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 04:14:45,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:45,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 04:14:45,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:45,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:45,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:14:45,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:45,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 04:14:45,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:45,080 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:14:45,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723375646] [2020-10-14 04:14:45,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:14:45,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:14:45,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322953412] [2020-10-14 04:14:45,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:14:45,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:14:45,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:14:45,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:14:45,085 INFO L87 Difference]: Start difference. First operand 14195 states and 17009 transitions. Second operand 5 states. [2020-10-14 04:14:53,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:14:53,015 INFO L93 Difference]: Finished difference Result 33351 states and 40998 transitions. [2020-10-14 04:14:53,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:14:53,017 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-14 04:14:53,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:14:53,072 INFO L225 Difference]: With dead ends: 33351 [2020-10-14 04:14:53,072 INFO L226 Difference]: Without dead ends: 19162 [2020-10-14 04:14:53,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:14:53,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19162 states. [2020-10-14 04:14:53,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19162 to 19158. [2020-10-14 04:14:53,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19158 states. [2020-10-14 04:14:53,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19158 states to 19158 states and 23021 transitions. [2020-10-14 04:14:53,414 INFO L78 Accepts]: Start accepts. Automaton has 19158 states and 23021 transitions. Word has length 148 [2020-10-14 04:14:53,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:14:53,414 INFO L479 AbstractCegarLoop]: Abstraction has 19158 states and 23021 transitions. [2020-10-14 04:14:53,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:14:53,414 INFO L276 IsEmpty]: Start isEmpty. Operand 19158 states and 23021 transitions. [2020-10-14 04:14:53,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-14 04:14:53,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:14:53,420 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 04:14:53,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:14:53,420 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:14:53,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:14:53,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1921771668, now seen corresponding path program 1 times [2020-10-14 04:14:53,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:14:53,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461239464] [2020-10-14 04:14:53,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:14:53,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:53,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:53,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:54,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:56,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:56,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-14 04:14:56,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:14:56,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2616 [2020-10-14 04:14:56,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:56,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:56,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:14:56,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 04:14:56,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 04:14:56,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:56,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:14:56,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:56,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:56,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:56,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:14:56,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:56,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:14:56,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:56,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:56,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:14:56,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:56,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:14:56,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:56,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:14:56,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:56,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:56,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:56,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 04:14:56,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:56,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 04:14:56,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:56,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:56,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:14:56,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:56,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 04:14:56,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:56,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 04:14:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:56,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:56,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:56,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 04:14:56,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:56,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 04:14:56,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:56,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:56,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:14:56,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:14:56,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 04:14:56,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:56,552 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 156 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:14:56,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1461239464] [2020-10-14 04:14:56,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:14:56,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:14:56,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421366182] [2020-10-14 04:14:56,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:14:56,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:14:56,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:14:56,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:14:56,555 INFO L87 Difference]: Start difference. First operand 19158 states and 23021 transitions. Second operand 8 states. [2020-10-14 04:15:08,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:15:08,912 INFO L93 Difference]: Finished difference Result 47751 states and 59687 transitions. [2020-10-14 04:15:08,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 04:15:08,913 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 201 [2020-10-14 04:15:08,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:15:09,005 INFO L225 Difference]: With dead ends: 47751 [2020-10-14 04:15:09,006 INFO L226 Difference]: Without dead ends: 28599 [2020-10-14 04:15:09,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:15:09,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28599 states. [2020-10-14 04:15:09,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28599 to 28551. [2020-10-14 04:15:09,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28551 states. [2020-10-14 04:15:09,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28551 states to 28551 states and 33657 transitions. [2020-10-14 04:15:09,475 INFO L78 Accepts]: Start accepts. Automaton has 28551 states and 33657 transitions. Word has length 201 [2020-10-14 04:15:09,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:15:09,476 INFO L479 AbstractCegarLoop]: Abstraction has 28551 states and 33657 transitions. [2020-10-14 04:15:09,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:15:09,476 INFO L276 IsEmpty]: Start isEmpty. Operand 28551 states and 33657 transitions. [2020-10-14 04:15:09,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-14 04:15:09,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:15:09,481 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 04:15:09,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:15:09,481 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:15:09,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:15:09,482 INFO L82 PathProgramCache]: Analyzing trace with hash 260701444, now seen corresponding path program 1 times [2020-10-14 04:15:09,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:15:09,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284295047] [2020-10-14 04:15:09,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:15:09,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:09,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:09,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:09,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:12,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:13,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:13,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-14 04:15:13,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:15:13,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3949 [2020-10-14 04:15:13,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:13,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:13,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:15:13,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 04:15:13,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 04:15:13,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:13,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:15:13,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:13,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:13,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:13,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:15:13,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:13,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:15:13,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:13,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:13,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:15:13,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:13,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:15:13,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:13,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:15:13,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:13,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:13,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:13,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 04:15:13,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:13,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 04:15:13,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:13,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:13,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:15:13,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:13,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 04:15:13,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:13,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 04:15:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:13,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:13,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:13,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:15:13,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:13,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 04:15:13,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:13,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:13,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:15:13,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:15:13,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 04:15:13,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:13,803 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 156 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:15:13,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284295047] [2020-10-14 04:15:13,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:15:13,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:15:13,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261571256] [2020-10-14 04:15:13,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:15:13,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:15:13,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:15:13,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:15:13,806 INFO L87 Difference]: Start difference. First operand 28551 states and 33657 transitions. Second operand 8 states. [2020-10-14 04:15:24,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:15:24,583 INFO L93 Difference]: Finished difference Result 53795 states and 63723 transitions. [2020-10-14 04:15:24,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 04:15:24,588 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 209 [2020-10-14 04:15:24,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:15:24,639 INFO L225 Difference]: With dead ends: 53795 [2020-10-14 04:15:24,639 INFO L226 Difference]: Without dead ends: 23121 [2020-10-14 04:15:24,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:15:24,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23121 states. [2020-10-14 04:15:25,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23121 to 20252. [2020-10-14 04:15:25,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20252 states. [2020-10-14 04:15:25,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20252 states to 20252 states and 22552 transitions. [2020-10-14 04:15:25,078 INFO L78 Accepts]: Start accepts. Automaton has 20252 states and 22552 transitions. Word has length 209 [2020-10-14 04:15:25,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:15:25,079 INFO L479 AbstractCegarLoop]: Abstraction has 20252 states and 22552 transitions. [2020-10-14 04:15:25,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:15:25,079 INFO L276 IsEmpty]: Start isEmpty. Operand 20252 states and 22552 transitions. [2020-10-14 04:15:25,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-10-14 04:15:25,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:15:25,088 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:15:25,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:15:25,089 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:15:25,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:15:25,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1909252046, now seen corresponding path program 1 times [2020-10-14 04:15:25,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:15:25,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974784379] [2020-10-14 04:15:25,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:15:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:25,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:25,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:25,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:25,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:30,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:30,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-10-14 04:15:30,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:15:30,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 04:15:30,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:30,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:30,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:15:30,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 04:15:30,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 04:15:30,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:30,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:15:30,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:30,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:30,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:30,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:15:30,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:30,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:15:30,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:30,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:30,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:15:30,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:30,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:15:30,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:30,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:15:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:30,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:30,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:30,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:15:30,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:30,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 04:15:30,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:30,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:30,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:15:30,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:30,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 04:15:30,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:30,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:15:30,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:30,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:30,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:30,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 04:15:30,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:30,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-14 04:15:30,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:30,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:30,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:15:30,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:15:30,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 04:15:30,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:30,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-14 04:15:30,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:30,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:30,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:30,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:15:30,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:30,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 04:15:30,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:30,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:30,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:15:30,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 04:15:30,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:15:30,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:15:30,922 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 242 proven. 87 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-14 04:15:30,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974784379] [2020-10-14 04:15:30,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:15:30,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:15:30,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422490057] [2020-10-14 04:15:30,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:15:30,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:15:30,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:15:30,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:15:30,925 INFO L87 Difference]: Start difference. First operand 20252 states and 22552 transitions. Second operand 7 states. [2020-10-14 04:15:43,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:15:43,390 INFO L93 Difference]: Finished difference Result 49757 states and 57720 transitions. [2020-10-14 04:15:43,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:15:43,392 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 368 [2020-10-14 04:15:43,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:15:43,469 INFO L225 Difference]: With dead ends: 49757 [2020-10-14 04:15:43,470 INFO L226 Difference]: Without dead ends: 30221 [2020-10-14 04:15:43,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:15:43,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30221 states. [2020-10-14 04:15:44,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30221 to 29971. [2020-10-14 04:15:44,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29971 states. [2020-10-14 04:15:44,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29971 states to 29971 states and 33285 transitions. [2020-10-14 04:15:44,127 INFO L78 Accepts]: Start accepts. Automaton has 29971 states and 33285 transitions. Word has length 368 [2020-10-14 04:15:44,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:15:44,128 INFO L479 AbstractCegarLoop]: Abstraction has 29971 states and 33285 transitions. [2020-10-14 04:15:44,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:15:44,128 INFO L276 IsEmpty]: Start isEmpty. Operand 29971 states and 33285 transitions. [2020-10-14 04:15:44,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2020-10-14 04:15:44,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:15:44,149 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, 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, 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] [2020-10-14 04:15:44,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:15:44,149 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:15:44,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:15:44,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1193412654, now seen corresponding path program 1 times [2020-10-14 04:15:44,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:15:44,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725975728] [2020-10-14 04:15:44,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:15:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:44,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:44,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:44,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:47,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:48,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:49,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:49,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 462 [2020-10-14 04:15:49,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:15:49,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 04:15:49,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:49,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:49,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:15:49,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 320 [2020-10-14 04:15:49,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 04:15:49,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:15:49,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:15:49,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:49,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:49,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:49,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:15:49,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:49,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:15:49,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:49,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:49,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:15:49,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:49,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:15:49,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:49,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:15:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:49,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:49,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:49,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-14 04:15:49,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:49,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 04:15:49,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:49,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:49,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:15:49,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:49,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:15:49,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:49,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-14 04:15:49,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:49,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:49,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:49,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:15:49,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:49,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 04:15:49,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:49,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:49,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:15:49,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:49,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 04:15:49,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:49,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-14 04:15:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:49,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:49,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:49,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:15:49,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:49,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 04:15:49,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:49,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:49,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:15:49,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:15:49,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 04:15:49,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:50,139 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 296 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-14 04:15:50,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725975728] [2020-10-14 04:15:50,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:15:50,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:15:50,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220080379] [2020-10-14 04:15:50,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:15:50,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:15:50,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:15:50,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:15:50,149 INFO L87 Difference]: Start difference. First operand 29971 states and 33285 transitions. Second operand 7 states. [2020-10-14 04:16:05,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:16:05,340 INFO L93 Difference]: Finished difference Result 77359 states and 88378 transitions. [2020-10-14 04:16:05,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:16:05,341 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 448 [2020-10-14 04:16:05,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:16:05,436 INFO L225 Difference]: With dead ends: 77359 [2020-10-14 04:16:05,437 INFO L226 Difference]: Without dead ends: 44866 [2020-10-14 04:16:05,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:16:05,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44866 states. [2020-10-14 04:16:06,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44866 to 44123. [2020-10-14 04:16:06,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44123 states. [2020-10-14 04:16:06,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44123 states to 44123 states and 47493 transitions. [2020-10-14 04:16:06,330 INFO L78 Accepts]: Start accepts. Automaton has 44123 states and 47493 transitions. Word has length 448 [2020-10-14 04:16:06,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:16:06,331 INFO L479 AbstractCegarLoop]: Abstraction has 44123 states and 47493 transitions. [2020-10-14 04:16:06,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:16:06,331 INFO L276 IsEmpty]: Start isEmpty. Operand 44123 states and 47493 transitions. [2020-10-14 04:16:06,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 671 [2020-10-14 04:16:06,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:16:06,376 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:16:06,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:16:06,377 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:16:06,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:16:06,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1338652832, now seen corresponding path program 1 times [2020-10-14 04:16:06,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:16:06,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367011472] [2020-10-14 04:16:06,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:16:06,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:06,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:06,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:07,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:07,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:08,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:11,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:11,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 684 [2020-10-14 04:16:11,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:16:11,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 04:16:11,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:11,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:11,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:16:11,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 244 [2020-10-14 04:16:11,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-14 04:16:11,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:11,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:16:11,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:11,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:11,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:11,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:16:11,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:11,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:16:11,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:11,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:11,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:11,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:11,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:11,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:11,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:16:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:11,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:11,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:11,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-14 04:16:11,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:11,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-14 04:16:11,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:11,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:11,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:16:11,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:11,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 229 [2020-10-14 04:16:11,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:11,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-14 04:16:11,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:11,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:12,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:12,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 04:16:12,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:12,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-14 04:16:12,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:12,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:12,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:16:12,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:16:12,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-14 04:16:12,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:12,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2020-10-14 04:16:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:12,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:12,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:12,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 04:16:12,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:12,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 04:16:12,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:12,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:12,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:12,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 04:16:12,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:12,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:12,826 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 359 proven. 160 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2020-10-14 04:16:12,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367011472] [2020-10-14 04:16:12,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:16:12,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:16:12,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221728705] [2020-10-14 04:16:12,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:16:12,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:16:12,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:16:12,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:16:12,830 INFO L87 Difference]: Start difference. First operand 44123 states and 47493 transitions. Second operand 7 states. [2020-10-14 04:16:22,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:16:22,646 INFO L93 Difference]: Finished difference Result 87812 states and 95586 transitions. [2020-10-14 04:16:22,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:16:22,648 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 670 [2020-10-14 04:16:22,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:16:22,746 INFO L225 Difference]: With dead ends: 87812 [2020-10-14 04:16:22,746 INFO L226 Difference]: Without dead ends: 45107 [2020-10-14 04:16:22,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:16:22,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45107 states. [2020-10-14 04:16:23,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45107 to 44883. [2020-10-14 04:16:23,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44883 states. [2020-10-14 04:16:23,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44883 states to 44883 states and 48337 transitions. [2020-10-14 04:16:23,845 INFO L78 Accepts]: Start accepts. Automaton has 44883 states and 48337 transitions. Word has length 670 [2020-10-14 04:16:23,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:16:23,848 INFO L479 AbstractCegarLoop]: Abstraction has 44883 states and 48337 transitions. [2020-10-14 04:16:23,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:16:23,848 INFO L276 IsEmpty]: Start isEmpty. Operand 44883 states and 48337 transitions. [2020-10-14 04:16:23,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2020-10-14 04:16:23,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:16:23,892 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:16:23,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:16:23,893 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:16:23,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:16:23,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1717872192, now seen corresponding path program 1 times [2020-10-14 04:16:23,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:16:23,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47688643] [2020-10-14 04:16:23,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:16:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:23,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:24,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:25,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:25,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:26,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:28,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:28,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 704 [2020-10-14 04:16:28,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:16:28,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 04:16:28,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:28,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:28,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:16:28,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 446 [2020-10-14 04:16:28,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 04:16:28,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:29,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:16:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:29,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:29,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:29,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:16:29,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:29,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:16:29,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:29,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:29,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:29,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:29,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:29,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:29,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:16:29,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:29,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:29,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:29,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-14 04:16:29,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:29,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 04:16:29,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:29,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:29,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:29,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:29,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:29,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:30,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-14 04:16:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:30,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:30,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:30,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 04:16:30,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:30,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 04:16:30,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:30,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:30,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:30,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:30,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:30,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:30,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2020-10-14 04:16:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:30,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:30,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:30,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:16:30,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:30,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 04:16:30,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:30,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:30,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:16:30,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:30,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 04:16:30,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:30,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2020-10-14 04:16:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:30,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:30,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:30,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 04:16:30,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:30,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 04:16:30,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:30,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:30,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:16:30,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:16:30,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 04:16:30,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:30,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-10-14 04:16:30,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:30,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:30,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:30,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:16:30,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:30,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 04:16:30,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:30,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:30,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:30,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 04:16:30,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:30,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:30,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 540 proven. 87 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2020-10-14 04:16:30,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47688643] [2020-10-14 04:16:30,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:16:30,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:16:30,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736070600] [2020-10-14 04:16:30,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:16:30,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:16:30,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:16:30,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:16:30,888 INFO L87 Difference]: Start difference. First operand 44883 states and 48337 transitions. Second operand 7 states. [2020-10-14 04:16:40,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:16:40,560 INFO L93 Difference]: Finished difference Result 110246 states and 122611 transitions. [2020-10-14 04:16:40,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:16:40,562 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 686 [2020-10-14 04:16:40,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:16:40,751 INFO L225 Difference]: With dead ends: 110246 [2020-10-14 04:16:40,751 INFO L226 Difference]: Without dead ends: 66781 [2020-10-14 04:16:40,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:16:40,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66781 states. [2020-10-14 04:16:41,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66781 to 65629. [2020-10-14 04:16:41,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65629 states. [2020-10-14 04:16:41,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65629 states to 65629 states and 70943 transitions. [2020-10-14 04:16:41,803 INFO L78 Accepts]: Start accepts. Automaton has 65629 states and 70943 transitions. Word has length 686 [2020-10-14 04:16:41,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:16:41,804 INFO L479 AbstractCegarLoop]: Abstraction has 65629 states and 70943 transitions. [2020-10-14 04:16:41,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:16:41,805 INFO L276 IsEmpty]: Start isEmpty. Operand 65629 states and 70943 transitions. [2020-10-14 04:16:41,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2020-10-14 04:16:41,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:16:41,839 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:16:41,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 04:16:41,840 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:16:41,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:16:41,840 INFO L82 PathProgramCache]: Analyzing trace with hash -908856261, now seen corresponding path program 1 times [2020-10-14 04:16:41,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:16:41,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953878448] [2020-10-14 04:16:41,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:16:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:41,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:42,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:42,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:45,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:45,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:46,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:46,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:46,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 712 [2020-10-14 04:16:46,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:16:46,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-14 04:16:46,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:46,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:46,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:16:46,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 244 [2020-10-14 04:16:46,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-14 04:16:46,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:47,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:16:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:47,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:47,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:47,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:16:47,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:47,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:16:47,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:47,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:47,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:47,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:47,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:47,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:47,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:16:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:47,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:47,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:47,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-14 04:16:47,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:47,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 04:16:47,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:47,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:47,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:16:47,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:47,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 229 [2020-10-14 04:16:47,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:47,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-14 04:16:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:47,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:47,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:47,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-14 04:16:47,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:47,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 04:16:47,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:47,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:47,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:16:47,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:16:47,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-14 04:16:47,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:47,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2020-10-14 04:16:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:47,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:47,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:47,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 04:16:47,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:47,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 04:16:47,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:47,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:47,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:47,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 04:16:47,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:47,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:47,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2020-10-14 04:16:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:47,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:47,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:47,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:16:47,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:47,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 04:16:47,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:47,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:47,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:47,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 04:16:47,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:47,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:47,899 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 370 proven. 221 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-14 04:16:47,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953878448] [2020-10-14 04:16:47,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:16:47,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:16:47,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277040507] [2020-10-14 04:16:47,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:16:47,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:16:47,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:16:47,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:16:47,902 INFO L87 Difference]: Start difference. First operand 65629 states and 70943 transitions. Second operand 7 states. [2020-10-14 04:17:00,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:17:00,013 INFO L93 Difference]: Finished difference Result 146906 states and 160046 transitions. [2020-10-14 04:17:00,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:17:00,019 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 696 [2020-10-14 04:17:00,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:17:00,176 INFO L225 Difference]: With dead ends: 146906 [2020-10-14 04:17:00,176 INFO L226 Difference]: Without dead ends: 81973 [2020-10-14 04:17:00,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:17:00,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81973 states. [2020-10-14 04:17:01,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81973 to 81220. [2020-10-14 04:17:01,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81220 states. [2020-10-14 04:17:01,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81220 states to 81220 states and 87740 transitions. [2020-10-14 04:17:01,232 INFO L78 Accepts]: Start accepts. Automaton has 81220 states and 87740 transitions. Word has length 696 [2020-10-14 04:17:01,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:17:01,233 INFO L479 AbstractCegarLoop]: Abstraction has 81220 states and 87740 transitions. [2020-10-14 04:17:01,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:17:01,233 INFO L276 IsEmpty]: Start isEmpty. Operand 81220 states and 87740 transitions. [2020-10-14 04:17:01,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2020-10-14 04:17:01,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:17:01,287 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:17:01,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 04:17:01,287 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:17:01,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:17:01,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1999385953, now seen corresponding path program 1 times [2020-10-14 04:17:01,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:17:01,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549977233] [2020-10-14 04:17:01,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:17:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:01,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:01,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:02,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:06,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:06,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 804 [2020-10-14 04:17:06,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:17:06,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 04:17:06,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:06,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:06,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:17:06,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 520 [2020-10-14 04:17:06,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-14 04:17:06,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:17:06,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:17:06,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:06,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:06,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:06,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:17:06,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:06,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:17:06,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:06,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:06,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:17:06,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:06,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:17:06,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:17:06,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:17:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:06,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:06,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:06,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:17:06,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:06,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 04:17:06,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:06,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:06,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:17:06,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:06,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:17:06,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:17:06,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:17:06,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:06,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:06,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:06,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 390 [2020-10-14 04:17:06,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:06,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-14 04:17:06,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:06,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:06,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:17:06,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:06,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 381 [2020-10-14 04:17:06,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:17:06,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:17:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:06,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:06,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:06,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 04:17:06,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:06,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 04:17:06,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:06,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:06,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:17:06,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:06,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 04:17:06,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:17:07,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-14 04:17:07,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:07,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:07,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:07,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 04:17:07,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:07,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 04:17:07,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:07,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:07,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:17:07,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:17:07,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 04:17:07,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:17:07,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 654 [2020-10-14 04:17:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:07,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:07,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:07,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:17:07,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:07,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 04:17:07,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:07,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:07,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:17:07,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 04:17:07,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:17:07,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:17:09,201 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 446 proven. 87 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2020-10-14 04:17:09,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549977233] [2020-10-14 04:17:09,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:17:09,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:17:09,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267792567] [2020-10-14 04:17:09,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:17:09,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:17:09,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:17:09,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:17:09,203 INFO L87 Difference]: Start difference. First operand 81220 states and 87740 transitions. Second operand 7 states. [2020-10-14 04:17:18,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:17:18,199 INFO L93 Difference]: Finished difference Result 161752 states and 174837 transitions. [2020-10-14 04:17:18,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:17:18,201 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 786 [2020-10-14 04:17:18,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:17:18,322 INFO L225 Difference]: With dead ends: 161752 [2020-10-14 04:17:18,322 INFO L226 Difference]: Without dead ends: 81239 [2020-10-14 04:17:18,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:17:18,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81239 states. [2020-10-14 04:17:19,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81239 to 80497. [2020-10-14 04:17:19,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80497 states. [2020-10-14 04:17:19,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80497 states to 80497 states and 85826 transitions. [2020-10-14 04:17:19,603 INFO L78 Accepts]: Start accepts. Automaton has 80497 states and 85826 transitions. Word has length 786 [2020-10-14 04:17:19,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:17:19,604 INFO L479 AbstractCegarLoop]: Abstraction has 80497 states and 85826 transitions. [2020-10-14 04:17:19,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:17:19,604 INFO L276 IsEmpty]: Start isEmpty. Operand 80497 states and 85826 transitions. [2020-10-14 04:17:19,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 788 [2020-10-14 04:17:19,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:17:19,635 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:17:19,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 04:17:19,635 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:17:19,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:17:19,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1608444502, now seen corresponding path program 1 times [2020-10-14 04:17:19,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:17:19,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738013887] [2020-10-14 04:17:19,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:17:19,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:19,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:19,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:20,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:22,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:24,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:24,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 805 [2020-10-14 04:17:24,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:17:24,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 04:17:24,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:24,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:24,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:17:24,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 663 [2020-10-14 04:17:24,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 04:17:24,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:17:24,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:17:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:24,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:24,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:24,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:17:24,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:24,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:17:24,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:24,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:24,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:17:24,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:24,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:17:24,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:17:24,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:17:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:24,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:24,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:24,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:17:24,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:24,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 04:17:24,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:24,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:24,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:17:24,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:24,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:17:24,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:17:24,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:17:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:24,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:24,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:24,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 390 [2020-10-14 04:17:24,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:24,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 04:17:24,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:24,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:24,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:17:24,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:24,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:17:24,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:17:25,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:17:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:25,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:25,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:25,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 04:17:25,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:25,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 04:17:25,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:25,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:25,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:17:25,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:25,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:17:25,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:17:25,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-14 04:17:25,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:25,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:25,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:25,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 04:17:25,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:25,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 04:17:25,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:25,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:25,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:17:25,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:25,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 04:17:25,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:17:25,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 655 [2020-10-14 04:17:25,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:25,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:25,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:25,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:17:25,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:25,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 04:17:25,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:25,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:25,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:17:25,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:17:25,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 04:17:25,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:17:26,744 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 445 proven. 2 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2020-10-14 04:17:26,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738013887] [2020-10-14 04:17:26,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:17:26,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:17:26,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309175355] [2020-10-14 04:17:26,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:17:26,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:17:26,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:17:26,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:17:26,746 INFO L87 Difference]: Start difference. First operand 80497 states and 85826 transitions. Second operand 7 states.