/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:34:05,799 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:34:05,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:34:05,829 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:34:05,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:34:05,831 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:34:05,832 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:34:05,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:34:05,835 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:34:05,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:34:05,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:34:05,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:34:05,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:34:05,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:34:05,841 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:34:05,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:34:05,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:34:05,844 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:34:05,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:34:05,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:34:05,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:34:05,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:34:05,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:34:05,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:34:05,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:34:05,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:34:05,856 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:34:05,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:34:05,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:34:05,858 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:34:05,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:34:05,859 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:34:05,860 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:34:05,861 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:34:05,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:34:05,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:34:05,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:34:05,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:34:05,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:34:05,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:34:05,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:34:05,866 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 09:34:05,899 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:34:05,900 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:34:05,901 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:34:05,901 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:34:05,902 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:34:05,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:34:05,902 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:34:05,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:34:05,903 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:34:05,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:34:05,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:34:05,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:34:05,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:34:05,904 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:34:05,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:34:05,904 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:34:05,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:34:05,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:34:05,905 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:34:05,905 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:34:05,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:34:05,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:34:05,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:34:05,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:34:05,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:34:05,906 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:34:05,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:34:05,906 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:34:05,907 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:34:05,907 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:34:06,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:34:06,277 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:34:06,284 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:34:06,286 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:34:06,289 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:34:06,290 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label29.c [2020-10-13 09:34:06,368 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6feb43e0d/05f012ab87164601a39d852a8a2dab6b/FLAG51366b152 [2020-10-13 09:34:07,188 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:34:07,190 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label29.c [2020-10-13 09:34:07,230 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6feb43e0d/05f012ab87164601a39d852a8a2dab6b/FLAG51366b152 [2020-10-13 09:34:07,300 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6feb43e0d/05f012ab87164601a39d852a8a2dab6b [2020-10-13 09:34:07,318 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:34:07,321 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:34:07,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:34:07,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:34:07,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:34:07,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:34:07" (1/1) ... [2020-10-13 09:34:07,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34f77297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:07, skipping insertion in model container [2020-10-13 09:34:07,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:34:07" (1/1) ... [2020-10-13 09:34:07,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:34:07,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:34:08,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:34:08,673 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:34:09,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:34:09,149 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:34:09,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:09 WrapperNode [2020-10-13 09:34:09,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:34:09,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:34:09,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:34:09,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:34:09,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:09" (1/1) ... [2020-10-13 09:34:09,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:09" (1/1) ... [2020-10-13 09:34:09,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:09" (1/1) ... [2020-10-13 09:34:09,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:09" (1/1) ... [2020-10-13 09:34:09,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:09" (1/1) ... [2020-10-13 09:34:09,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:09" (1/1) ... [2020-10-13 09:34:09,420 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:09" (1/1) ... [2020-10-13 09:34:09,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:34:09,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:34:09,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:34:09,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:34:09,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:34:09,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:34:09,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:34:09,514 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:34:09,514 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:34:09,514 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:34:09,514 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:34:09,515 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:34:09,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:34:09,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:34:09,516 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:34:09,516 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:34:09,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:34:09,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:34:18,831 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:34:18,832 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:34:18,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:34:18 BoogieIcfgContainer [2020-10-13 09:34:18,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:34:18,844 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:34:18,844 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:34:18,848 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:34:18,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:34:07" (1/3) ... [2020-10-13 09:34:18,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a5edd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:34:18, skipping insertion in model container [2020-10-13 09:34:18,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:09" (2/3) ... [2020-10-13 09:34:18,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a5edd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:34:18, skipping insertion in model container [2020-10-13 09:34:18,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:34:18" (3/3) ... [2020-10-13 09:34:18,853 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label29.c [2020-10-13 09:34:18,868 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:34:18,879 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:34:18,897 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:34:18,933 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:34:18,933 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:34:18,934 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:34:18,934 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:34:18,934 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:34:18,934 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:34:18,934 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:34:18,935 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:34:18,975 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-13 09:34:18,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 09:34:18,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:34:18,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:34:18,991 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:34:18,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:34:18,999 INFO L82 PathProgramCache]: Analyzing trace with hash 216258473, now seen corresponding path program 1 times [2020-10-13 09:34:19,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:34:19,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288974431] [2020-10-13 09:34:19,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:34:19,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:19,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:19,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:19,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 09:34:19,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:19,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 560 [2020-10-13 09:34:19,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:19,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:34:19,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:34:19,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 09:34:19,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:34:20,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:34:20,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:20,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:20,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:20,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:34:20,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:20,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:34:20,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:20,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:34:20,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:20,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:34:20,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:20,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:34:20,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288974431] [2020-10-13 09:34:20,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:34:20,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:34:20,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476682427] [2020-10-13 09:34:20,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:34:20,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:34:20,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:34:20,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:34:20,139 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-13 09:34:31,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:34:31,694 INFO L93 Difference]: Finished difference Result 1716 states and 3126 transitions. [2020-10-13 09:34:31,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:34:31,701 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-10-13 09:34:31,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:34:31,736 INFO L225 Difference]: With dead ends: 1716 [2020-10-13 09:34:31,736 INFO L226 Difference]: Without dead ends: 1034 [2020-10-13 09:34:31,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:34:31,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2020-10-13 09:34:31,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1008. [2020-10-13 09:34:31,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1008 states. [2020-10-13 09:34:31,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1705 transitions. [2020-10-13 09:34:31,886 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1705 transitions. Word has length 71 [2020-10-13 09:34:31,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:34:31,888 INFO L479 AbstractCegarLoop]: Abstraction has 1008 states and 1705 transitions. [2020-10-13 09:34:31,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:34:31,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1705 transitions. [2020-10-13 09:34:31,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-13 09:34:31,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:34:31,897 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:34:31,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:34:31,897 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:34:31,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:34:31,898 INFO L82 PathProgramCache]: Analyzing trace with hash 2068363867, now seen corresponding path program 1 times [2020-10-13 09:34:31,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:34:31,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127337282] [2020-10-13 09:34:31,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:34:31,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:31,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:32,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:33,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:33,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-13 09:34:33,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:34:33,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1410 [2020-10-13 09:34:33,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:33,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:34:33,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 09:34:33,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:34:33,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:34:33,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:34:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:33,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:33,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:33,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:34:33,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:33,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:34:33,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:33,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:34:33,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:33,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:34:33,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:33,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:34:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:33,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:33,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:33,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:34:33,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:33,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 09:34:33,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:33,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:34:33,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:33,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:34:33,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:33,680 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:34:33,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127337282] [2020-10-13 09:34:33,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:34:33,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:34:33,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189619718] [2020-10-13 09:34:33,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:34:33,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:34:33,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:34:33,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:34:33,685 INFO L87 Difference]: Start difference. First operand 1008 states and 1705 transitions. Second operand 5 states. [2020-10-13 09:34:45,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:34:45,452 INFO L93 Difference]: Finished difference Result 2916 states and 4999 transitions. [2020-10-13 09:34:45,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:34:45,453 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-10-13 09:34:45,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:34:45,470 INFO L225 Difference]: With dead ends: 2916 [2020-10-13 09:34:45,470 INFO L226 Difference]: Without dead ends: 1914 [2020-10-13 09:34:45,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:34:45,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2020-10-13 09:34:45,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1899. [2020-10-13 09:34:45,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1899 states. [2020-10-13 09:34:45,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1899 states to 1899 states and 2834 transitions. [2020-10-13 09:34:45,576 INFO L78 Accepts]: Start accepts. Automaton has 1899 states and 2834 transitions. Word has length 140 [2020-10-13 09:34:45,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:34:45,580 INFO L479 AbstractCegarLoop]: Abstraction has 1899 states and 2834 transitions. [2020-10-13 09:34:45,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:34:45,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1899 states and 2834 transitions. [2020-10-13 09:34:45,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-13 09:34:45,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:34:45,595 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:34:45,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:34:45,595 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:34:45,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:34:45,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1582760359, now seen corresponding path program 1 times [2020-10-13 09:34:45,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:34:45,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799357487] [2020-10-13 09:34:45,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:34:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:45,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:45,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:46,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:47,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:47,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:47,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 09:34:47,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:34:47,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2103 [2020-10-13 09:34:47,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:47,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:34:47,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 09:34:47,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:34:47,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:34:47,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:34:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:47,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:47,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:47,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:34:47,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:47,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:34:47,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:47,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:34:47,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:47,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:34:47,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:34:47,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:34:48,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:48,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:48,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:48,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:34:48,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:48,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-13 09:34:48,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:48,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:34:48,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:48,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:34:48,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:34:48,280 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:34:48,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799357487] [2020-10-13 09:34:48,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:34:48,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:34:48,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708637487] [2020-10-13 09:34:48,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:34:48,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:34:48,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:34:48,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:34:48,286 INFO L87 Difference]: Start difference. First operand 1899 states and 2834 transitions. Second operand 5 states. [2020-10-13 09:34:58,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:34:58,824 INFO L93 Difference]: Finished difference Result 3821 states and 5719 transitions. [2020-10-13 09:34:58,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:34:58,827 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-13 09:34:58,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:34:58,842 INFO L225 Difference]: With dead ends: 3821 [2020-10-13 09:34:58,842 INFO L226 Difference]: Without dead ends: 1912 [2020-10-13 09:34:58,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:34:58,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2020-10-13 09:34:58,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1899. [2020-10-13 09:34:58,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1899 states. [2020-10-13 09:34:58,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1899 states to 1899 states and 2830 transitions. [2020-10-13 09:34:58,921 INFO L78 Accepts]: Start accepts. Automaton has 1899 states and 2830 transitions. Word has length 146 [2020-10-13 09:34:58,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:34:58,922 INFO L479 AbstractCegarLoop]: Abstraction has 1899 states and 2830 transitions. [2020-10-13 09:34:58,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:34:58,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1899 states and 2830 transitions. [2020-10-13 09:34:58,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-13 09:34:58,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:34:58,926 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:34:58,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:34:58,926 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:34:58,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:34:58,927 INFO L82 PathProgramCache]: Analyzing trace with hash 400970031, now seen corresponding path program 1 times [2020-10-13 09:34:58,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:34:58,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [400243719] [2020-10-13 09:34:58,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:34:58,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:58,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:59,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:59,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:00,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:00,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 09:35:00,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:35:00,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1404 [2020-10-13 09:35:00,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:00,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:35:00,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 09:35:00,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 09:35:00,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:00,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:35:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:00,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:00,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:00,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:35:00,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:00,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:35:00,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:00,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:35:00,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:00,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:35:00,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:00,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:35:00,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:00,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:00,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:00,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:35:00,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:00,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 09:35:00,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:00,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:35:00,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:00,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:35:00,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:00,874 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:35:00,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [400243719] [2020-10-13 09:35:00,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:35:00,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:35:00,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808049459] [2020-10-13 09:35:00,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:35:00,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:35:00,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:35:00,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:35:00,877 INFO L87 Difference]: Start difference. First operand 1899 states and 2830 transitions. Second operand 5 states. [2020-10-13 09:35:13,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:35:13,586 INFO L93 Difference]: Finished difference Result 3852 states and 5742 transitions. [2020-10-13 09:35:13,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:35:13,592 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-13 09:35:13,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:35:13,604 INFO L225 Difference]: With dead ends: 3852 [2020-10-13 09:35:13,605 INFO L226 Difference]: Without dead ends: 1912 [2020-10-13 09:35:13,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:35:13,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2020-10-13 09:35:13,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1899. [2020-10-13 09:35:13,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1899 states. [2020-10-13 09:35:13,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1899 states to 1899 states and 2826 transitions. [2020-10-13 09:35:13,673 INFO L78 Accepts]: Start accepts. Automaton has 1899 states and 2826 transitions. Word has length 150 [2020-10-13 09:35:13,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:35:13,674 INFO L479 AbstractCegarLoop]: Abstraction has 1899 states and 2826 transitions. [2020-10-13 09:35:13,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:35:13,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1899 states and 2826 transitions. [2020-10-13 09:35:13,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-13 09:35:13,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:35:13,678 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:35:13,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:35:13,678 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:35:13,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:35:13,679 INFO L82 PathProgramCache]: Analyzing trace with hash 598775912, now seen corresponding path program 1 times [2020-10-13 09:35:13,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:35:13,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231087394] [2020-10-13 09:35:13,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:35:13,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:13,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:13,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:14,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:14,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:35:14,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:35:14,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1069 [2020-10-13 09:35:14,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:14,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:35:14,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 09:35:14,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:35:14,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:14,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:35:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:14,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:14,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:14,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:35:14,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:14,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:35:14,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:14,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:35:14,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:14,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:35:14,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:35:14,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:35:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:14,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:15,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:15,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 09:35:15,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:15,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 09:35:15,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:15,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:35:15,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:15,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 09:35:15,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:15,080 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:35:15,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231087394] [2020-10-13 09:35:15,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:35:15,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:35:15,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450561199] [2020-10-13 09:35:15,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:35:15,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:35:15,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:35:15,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:35:15,083 INFO L87 Difference]: Start difference. First operand 1899 states and 2826 transitions. Second operand 5 states. [2020-10-13 09:35:31,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:35:31,092 INFO L93 Difference]: Finished difference Result 5561 states and 8412 transitions. [2020-10-13 09:35:31,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:35:31,094 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-13 09:35:31,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:35:31,115 INFO L225 Difference]: With dead ends: 5561 [2020-10-13 09:35:31,115 INFO L226 Difference]: Without dead ends: 3668 [2020-10-13 09:35:31,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:35:31,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3668 states. [2020-10-13 09:35:31,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3668 to 3654. [2020-10-13 09:35:31,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3654 states. [2020-10-13 09:35:31,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 5497 transitions. [2020-10-13 09:35:31,236 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 5497 transitions. Word has length 153 [2020-10-13 09:35:31,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:35:31,236 INFO L479 AbstractCegarLoop]: Abstraction has 3654 states and 5497 transitions. [2020-10-13 09:35:31,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:35:31,237 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 5497 transitions. [2020-10-13 09:35:31,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-13 09:35:31,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:35:31,240 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:35:31,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:35:31,241 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:35:31,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:35:31,241 INFO L82 PathProgramCache]: Analyzing trace with hash 2032709680, now seen corresponding path program 1 times [2020-10-13 09:35:31,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:35:31,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890822610] [2020-10-13 09:35:31,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:35:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:31,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:31,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:31,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:32,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:36,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:36,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 09:35:36,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:35:36,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 09:35:36,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:36,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:35:36,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-13 09:35:36,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:35:36,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:36,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:35:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:36,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:36,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:36,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:35:36,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:36,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:35:36,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:36,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:35:36,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:36,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:35:36,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:35:36,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:35:36,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:36,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:36,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:36,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 09:35:36,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:36,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-13 09:35:36,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:36,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:35:36,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:36,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 09:35:36,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:36,637 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:35:36,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890822610] [2020-10-13 09:35:36,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:35:36,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:35:36,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641768592] [2020-10-13 09:35:36,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:35:36,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:35:36,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:35:36,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:35:36,641 INFO L87 Difference]: Start difference. First operand 3654 states and 5497 transitions. Second operand 5 states. [2020-10-13 09:35:57,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:35:57,171 INFO L93 Difference]: Finished difference Result 7750 states and 11864 transitions. [2020-10-13 09:35:57,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:35:57,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-13 09:35:57,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:35:57,196 INFO L225 Difference]: With dead ends: 7750 [2020-10-13 09:35:57,196 INFO L226 Difference]: Without dead ends: 4102 [2020-10-13 09:35:57,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:35:57,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4102 states. [2020-10-13 09:35:57,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4102 to 3654. [2020-10-13 09:35:57,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3654 states. [2020-10-13 09:35:57,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 5497 transitions. [2020-10-13 09:35:57,332 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 5497 transitions. Word has length 157 [2020-10-13 09:35:57,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:35:57,333 INFO L479 AbstractCegarLoop]: Abstraction has 3654 states and 5497 transitions. [2020-10-13 09:35:57,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:35:57,333 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 5497 transitions. [2020-10-13 09:35:57,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-13 09:35:57,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:35:57,337 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:35:57,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:35:57,338 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:35:57,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:35:57,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1210408980, now seen corresponding path program 1 times [2020-10-13 09:35:57,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:35:57,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39426816] [2020-10-13 09:35:57,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:35:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:57,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:57,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:58,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:58,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:58,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:58,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-13 09:35:58,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:35:58,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1598 [2020-10-13 09:35:58,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:58,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:35:58,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 09:35:58,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 09:35:58,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:59,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:35:59,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:59,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:59,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:59,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:35:59,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:59,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:35:59,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:59,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:35:59,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:59,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:35:59,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:59,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:35:59,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:59,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:59,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:59,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 09:35:59,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:59,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 09:35:59,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:59,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:35:59,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:59,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:35:59,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:35:59,390 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:35:59,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39426816] [2020-10-13 09:35:59,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:35:59,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:35:59,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895455554] [2020-10-13 09:35:59,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:35:59,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:35:59,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:35:59,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:35:59,395 INFO L87 Difference]: Start difference. First operand 3654 states and 5497 transitions. Second operand 5 states. [2020-10-13 09:36:12,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:36:12,123 INFO L93 Difference]: Finished difference Result 7339 states and 11072 transitions. [2020-10-13 09:36:12,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:36:12,125 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-13 09:36:12,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:36:12,143 INFO L225 Difference]: With dead ends: 7339 [2020-10-13 09:36:12,144 INFO L226 Difference]: Without dead ends: 3667 [2020-10-13 09:36:12,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:36:12,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3667 states. [2020-10-13 09:36:12,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3667 to 3654. [2020-10-13 09:36:12,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3654 states. [2020-10-13 09:36:12,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 5493 transitions. [2020-10-13 09:36:12,261 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 5493 transitions. Word has length 159 [2020-10-13 09:36:12,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:36:12,261 INFO L479 AbstractCegarLoop]: Abstraction has 3654 states and 5493 transitions. [2020-10-13 09:36:12,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:36:12,262 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 5493 transitions. [2020-10-13 09:36:12,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-13 09:36:12,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:36:12,266 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:36:12,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:36:12,266 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:36:12,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:36:12,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1188952100, now seen corresponding path program 1 times [2020-10-13 09:36:12,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:36:12,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946253910] [2020-10-13 09:36:12,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:36:12,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:12,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:12,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:12,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:14,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:14,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-13 09:36:14,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:36:14,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2339 [2020-10-13 09:36:14,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:14,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:36:14,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-13 09:36:14,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:36:14,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:36:15,120 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 27 [2020-10-13 09:36:15,287 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 23 [2020-10-13 09:36:15,483 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2020-10-13 09:36:15,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:36:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:15,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:15,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:15,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:36:15,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:15,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:36:15,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:15,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:36:15,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:15,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:36:15,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:36:15,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:36:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:15,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:15,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:15,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 09:36:15,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:15,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 09:36:15,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:15,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:36:15,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:15,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 09:36:15,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:36:15,890 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:36:15,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946253910] [2020-10-13 09:36:15,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:36:15,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:36:15,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674989034] [2020-10-13 09:36:15,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:36:15,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:36:15,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:36:15,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:36:15,893 INFO L87 Difference]: Start difference. First operand 3654 states and 5493 transitions. Second operand 8 states. [2020-10-13 09:36:18,030 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2020-10-13 09:36:18,993 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2020-10-13 09:36:19,778 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2020-10-13 09:36:30,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:36:30,956 INFO L93 Difference]: Finished difference Result 7555 states and 11327 transitions. [2020-10-13 09:36:30,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 09:36:30,958 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 163 [2020-10-13 09:36:30,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:36:30,977 INFO L225 Difference]: With dead ends: 7555 [2020-10-13 09:36:30,977 INFO L226 Difference]: Without dead ends: 3667 [2020-10-13 09:36:30,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2020-10-13 09:36:30,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3667 states. [2020-10-13 09:36:31,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3667 to 3654. [2020-10-13 09:36:31,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3654 states. [2020-10-13 09:36:31,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 5475 transitions. [2020-10-13 09:36:31,151 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 5475 transitions. Word has length 163 [2020-10-13 09:36:31,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:36:31,151 INFO L479 AbstractCegarLoop]: Abstraction has 3654 states and 5475 transitions. [2020-10-13 09:36:31,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:36:31,151 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 5475 transitions. [2020-10-13 09:36:31,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-13 09:36:31,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:36:31,156 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:36:31,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:36:31,156 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:36:31,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:36:31,157 INFO L82 PathProgramCache]: Analyzing trace with hash -436041937, now seen corresponding path program 1 times [2020-10-13 09:36:31,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:36:31,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517114473] [2020-10-13 09:36:31,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:36:31,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:31,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:31,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:31,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:32,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:32,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 09:36:32,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:36:32,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1425 [2020-10-13 09:36:32,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:32,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:36:32,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 09:36:32,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:36:32,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 09:36:32,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:36:32,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:32,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:32,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:32,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:36:32,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:32,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:36:32,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:32,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:36:32,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:32,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:36:32,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:36:32,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:36:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:33,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:33,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:33,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:36:33,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:33,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-13 09:36:33,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:33,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:36:33,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:33,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 09:36:33,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:36:33,319 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:36:33,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517114473] [2020-10-13 09:36:33,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:36:33,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:36:33,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178595636] [2020-10-13 09:36:33,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:36:33,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:36:33,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:36:33,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:36:33,323 INFO L87 Difference]: Start difference. First operand 3654 states and 5475 transitions. Second operand 5 states. [2020-10-13 09:36:48,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:36:48,728 INFO L93 Difference]: Finished difference Result 7337 states and 11031 transitions. [2020-10-13 09:36:48,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:36:48,730 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-10-13 09:36:48,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:36:48,743 INFO L225 Difference]: With dead ends: 7337 [2020-10-13 09:36:48,743 INFO L226 Difference]: Without dead ends: 3667 [2020-10-13 09:36:48,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:36:48,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3667 states. [2020-10-13 09:36:48,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3667 to 3654. [2020-10-13 09:36:48,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3654 states. [2020-10-13 09:36:48,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 5467 transitions. [2020-10-13 09:36:48,829 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 5467 transitions. Word has length 166 [2020-10-13 09:36:48,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:36:48,829 INFO L479 AbstractCegarLoop]: Abstraction has 3654 states and 5467 transitions. [2020-10-13 09:36:48,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:36:48,829 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 5467 transitions. [2020-10-13 09:36:48,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-13 09:36:48,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:36:48,833 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:36:48,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:36:48,834 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:36:48,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:36:48,834 INFO L82 PathProgramCache]: Analyzing trace with hash -62338893, now seen corresponding path program 1 times [2020-10-13 09:36:48,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:36:48,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106625534] [2020-10-13 09:36:48,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:36:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:48,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:49,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:49,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:49,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 09:36:49,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:36:49,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1053 [2020-10-13 09:36:49,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:49,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:36:49,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-13 09:36:49,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:36:49,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:36:50,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:36:50,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:50,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:50,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:50,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:36:50,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:50,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:36:50,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:50,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:36:50,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:50,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:36:50,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:36:50,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:36:50,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:50,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:50,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:50,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 09:36:50,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:50,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 09:36:50,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:50,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:36:50,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:50,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-13 09:36:50,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:36:50,229 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:36:50,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106625534] [2020-10-13 09:36:50,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:36:50,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:36:50,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130046624] [2020-10-13 09:36:50,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:36:50,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:36:50,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:36:50,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:36:50,232 INFO L87 Difference]: Start difference. First operand 3654 states and 5467 transitions. Second operand 5 states. [2020-10-13 09:37:06,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:37:06,387 INFO L93 Difference]: Finished difference Result 10404 states and 15930 transitions. [2020-10-13 09:37:06,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:37:06,391 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-13 09:37:06,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:37:06,411 INFO L225 Difference]: With dead ends: 10404 [2020-10-13 09:37:06,411 INFO L226 Difference]: Without dead ends: 6756 [2020-10-13 09:37:06,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:37:06,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6756 states. [2020-10-13 09:37:06,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6756 to 6744. [2020-10-13 09:37:06,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6744 states. [2020-10-13 09:37:06,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6744 states to 6744 states and 9157 transitions. [2020-10-13 09:37:06,565 INFO L78 Accepts]: Start accepts. Automaton has 6744 states and 9157 transitions. Word has length 168 [2020-10-13 09:37:06,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:37:06,565 INFO L479 AbstractCegarLoop]: Abstraction has 6744 states and 9157 transitions. [2020-10-13 09:37:06,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:37:06,566 INFO L276 IsEmpty]: Start isEmpty. Operand 6744 states and 9157 transitions. [2020-10-13 09:37:06,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 09:37:06,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:37:06,572 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:37:06,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:37:06,573 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:37:06,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:37:06,573 INFO L82 PathProgramCache]: Analyzing trace with hash -454536350, now seen corresponding path program 1 times [2020-10-13 09:37:06,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:37:06,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513651149] [2020-10-13 09:37:06,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:37:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:06,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:06,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:07,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:08,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:08,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:08,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 09:37:08,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:37:08,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1859 [2020-10-13 09:37:08,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:08,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:37:08,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-13 09:37:08,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:37:08,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:08,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:37:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:08,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:08,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:08,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:37:08,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:37:08,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:37:08,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:08,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:37:08,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:37:08,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:37:08,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:08,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:37:08,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:08,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:08,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:08,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 09:37:08,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:37:08,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-13 09:37:08,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:08,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:37:08,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:37:08,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 09:37:08,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:37:09,006 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 23 [2020-10-13 09:37:09,066 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:37:09,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513651149] [2020-10-13 09:37:09,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:37:09,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:37:09,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989940550] [2020-10-13 09:37:09,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:37:09,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:37:09,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:37:09,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:37:09,069 INFO L87 Difference]: Start difference. First operand 6744 states and 9157 transitions. Second operand 6 states. [2020-10-13 09:37:23,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:37:23,798 INFO L93 Difference]: Finished difference Result 13522 states and 18411 transitions. [2020-10-13 09:37:23,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:37:23,806 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2020-10-13 09:37:23,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:37:23,826 INFO L225 Difference]: With dead ends: 13522 [2020-10-13 09:37:23,827 INFO L226 Difference]: Without dead ends: 6752 [2020-10-13 09:37:23,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:37:23,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6752 states. [2020-10-13 09:37:24,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6752 to 6744. [2020-10-13 09:37:24,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6744 states. [2020-10-13 09:37:24,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6744 states to 6744 states and 9149 transitions. [2020-10-13 09:37:24,058 INFO L78 Accepts]: Start accepts. Automaton has 6744 states and 9149 transitions. Word has length 172 [2020-10-13 09:37:24,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:37:24,058 INFO L479 AbstractCegarLoop]: Abstraction has 6744 states and 9149 transitions. [2020-10-13 09:37:24,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:37:24,059 INFO L276 IsEmpty]: Start isEmpty. Operand 6744 states and 9149 transitions. [2020-10-13 09:37:24,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-13 09:37:24,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:37:24,064 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:37:24,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:37:24,064 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:37:24,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:37:24,065 INFO L82 PathProgramCache]: Analyzing trace with hash 751016537, now seen corresponding path program 1 times [2020-10-13 09:37:24,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:37:24,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359983013] [2020-10-13 09:37:24,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:37:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:24,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:24,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:24,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:25,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:25,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:25,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:37:25,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:37:25,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1391 [2020-10-13 09:37:25,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:25,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:37:25,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-13 09:37:25,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:37:25,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:25,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:37:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:25,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:25,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:25,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:37:25,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:37:25,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:37:25,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:25,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:37:25,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:37:25,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:37:25,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:25,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:37:25,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:25,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:25,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:25,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 09:37:25,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:37:25,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 09:37:25,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:25,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:37:25,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:37:25,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:37:25,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:25,798 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:37:25,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359983013] [2020-10-13 09:37:25,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:37:25,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 09:37:25,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293852691] [2020-10-13 09:37:25,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:37:25,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:37:25,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:37:25,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:37:25,801 INFO L87 Difference]: Start difference. First operand 6744 states and 9149 transitions. Second operand 5 states. [2020-10-13 09:37:43,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:37:43,290 INFO L93 Difference]: Finished difference Result 16118 states and 22696 transitions. [2020-10-13 09:37:43,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:37:43,295 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-10-13 09:37:43,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:37:43,325 INFO L225 Difference]: With dead ends: 16118 [2020-10-13 09:37:43,325 INFO L226 Difference]: Without dead ends: 9380 [2020-10-13 09:37:43,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:37:43,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9380 states. [2020-10-13 09:37:43,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9380 to 8504. [2020-10-13 09:37:43,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8504 states. [2020-10-13 09:37:43,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8504 states to 8504 states and 11261 transitions. [2020-10-13 09:37:43,614 INFO L78 Accepts]: Start accepts. Automaton has 8504 states and 11261 transitions. Word has length 191 [2020-10-13 09:37:43,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:37:43,615 INFO L479 AbstractCegarLoop]: Abstraction has 8504 states and 11261 transitions. [2020-10-13 09:37:43,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:37:43,615 INFO L276 IsEmpty]: Start isEmpty. Operand 8504 states and 11261 transitions. [2020-10-13 09:37:43,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-13 09:37:43,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:37:43,623 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:37:43,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:37:43,624 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:37:43,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:37:43,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1844291040, now seen corresponding path program 1 times [2020-10-13 09:37:43,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:37:43,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920647578] [2020-10-13 09:37:43,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:37:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:43,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:43,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:44,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:44,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:44,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-13 09:37:44,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:37:44,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1188 [2020-10-13 09:37:44,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:44,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:37:44,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-13 09:37:44,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 09:37:44,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:45,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:37:45,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:45,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:45,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:45,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:37:45,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:37:45,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:37:45,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:45,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:37:45,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:37:45,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:37:45,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:45,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:37:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:45,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:45,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:45,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-13 09:37:45,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:37:45,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 09:37:45,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:45,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:37:45,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:37:45,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-13 09:37:45,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:45,383 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:37:45,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920647578] [2020-10-13 09:37:45,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:37:45,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:37:45,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519617204] [2020-10-13 09:37:45,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:37:45,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:37:45,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:37:45,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:37:45,394 INFO L87 Difference]: Start difference. First operand 8504 states and 11261 transitions. Second operand 5 states.