/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/Problem18_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:42:37,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:42:37,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:42:37,326 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:42:37,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:42:37,328 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:42:37,329 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:42:37,332 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:42:37,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:42:37,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:42:37,337 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:42:37,338 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:42:37,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:42:37,339 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:42:37,341 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:42:37,343 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:42:37,344 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:42:37,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:42:37,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:42:37,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:42:37,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:42:37,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:42:37,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:42:37,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:42:37,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:42:37,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:42:37,359 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:42:37,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:42:37,361 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:42:37,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:42:37,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:42:37,364 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:42:37,365 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:42:37,366 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:42:37,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:42:37,368 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:42:37,369 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:42:37,369 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:42:37,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:42:37,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:42:37,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:42:37,372 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 09:42:37,397 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:42:37,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:42:37,399 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:42:37,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:42:37,399 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:42:37,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:42:37,400 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:42:37,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:42:37,400 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:42:37,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:42:37,400 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:42:37,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:42:37,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:42:37,401 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:42:37,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:42:37,402 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:42:37,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:42:37,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:42:37,402 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:42:37,403 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:42:37,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:42:37,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:42:37,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:42:37,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:42:37,404 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:42:37,404 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:42:37,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:42:37,404 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:42:37,404 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:42:37,405 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 09:42:37,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:42:37,777 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:42:37,781 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:42:37,783 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:42:37,784 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:42:37,785 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label00.c [2020-10-13 09:42:37,864 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68b72704c/9104a2eeb96c4f5f952c89b6dd02c1bb/FLAGafb3e197b [2020-10-13 09:42:38,694 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:42:38,695 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label00.c [2020-10-13 09:42:38,733 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68b72704c/9104a2eeb96c4f5f952c89b6dd02c1bb/FLAGafb3e197b [2020-10-13 09:42:39,221 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68b72704c/9104a2eeb96c4f5f952c89b6dd02c1bb [2020-10-13 09:42:39,234 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:42:39,237 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:42:39,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:42:39,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:42:39,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:42:39,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:42:39" (1/1) ... [2020-10-13 09:42:39,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4815436f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:39, skipping insertion in model container [2020-10-13 09:42:39,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:42:39" (1/1) ... [2020-10-13 09:42:39,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:42:39,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:42:40,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:42:40,960 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:42:41,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:42:41,467 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:42:41,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:41 WrapperNode [2020-10-13 09:42:41,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:42:41,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:42:41,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:42:41,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:42:41,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:41" (1/1) ... [2020-10-13 09:42:41,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:41" (1/1) ... [2020-10-13 09:42:41,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:41" (1/1) ... [2020-10-13 09:42:41,576 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:41" (1/1) ... [2020-10-13 09:42:41,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:41" (1/1) ... [2020-10-13 09:42:41,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:41" (1/1) ... [2020-10-13 09:42:41,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:41" (1/1) ... [2020-10-13 09:42:41,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:42:41,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:42:41,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:42:41,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:42:41,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:41" (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 09:42:41,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:42:41,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:42:41,874 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:42:41,875 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:42:41,875 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 09:42:41,875 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:42:41,875 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:42:41,875 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:42:41,876 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 09:42:41,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:42:41,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:42:41,928 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:42:41,928 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:42:41,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:42:41,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:42:48,132 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:42:48,133 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:42:48,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:42:48 BoogieIcfgContainer [2020-10-13 09:42:48,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:42:48,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:42:48,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:42:48,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:42:48,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:42:39" (1/3) ... [2020-10-13 09:42:48,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@496df58a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:42:48, skipping insertion in model container [2020-10-13 09:42:48,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:41" (2/3) ... [2020-10-13 09:42:48,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@496df58a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:42:48, skipping insertion in model container [2020-10-13 09:42:48,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:42:48" (3/3) ... [2020-10-13 09:42:48,165 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label00.c [2020-10-13 09:42:48,178 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:42:48,191 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:42:48,209 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:42:48,249 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:42:48,249 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:42:48,250 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:42:48,250 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:42:48,250 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:42:48,250 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:42:48,250 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:42:48,251 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:42:48,303 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-13 09:42:48,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-13 09:42:48,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:42:48,315 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] [2020-10-13 09:42:48,316 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:42:48,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:42:48,325 INFO L82 PathProgramCache]: Analyzing trace with hash 760323554, now seen corresponding path program 1 times [2020-10-13 09:42:48,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:42:48,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939637154] [2020-10-13 09:42:48,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:42:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:48,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:49,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:49,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 09:42:49,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:42:49,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-10-13 09:42:49,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:49,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:42:49,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:42:49,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 09:42:49,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 81 [2020-10-13 09:42:49,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:42:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:49,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:49,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:49,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:42:49,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:42:49,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 09:42:49,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:49,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:42:49,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:42:49,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:42:49,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:42:49,352 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 09:42:49,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939637154] [2020-10-13 09:42:49,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:42:49,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:42:49,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392547902] [2020-10-13 09:42:49,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:42:49,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:42:49,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:42:49,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:42:49,390 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2020-10-13 09:42:57,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:42:57,946 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2020-10-13 09:42:57,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:42:57,950 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-13 09:42:57,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:42:58,006 INFO L225 Difference]: With dead ends: 2270 [2020-10-13 09:42:58,006 INFO L226 Difference]: Without dead ends: 1432 [2020-10-13 09:42:58,022 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 09:42:58,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-13 09:42:58,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2020-10-13 09:42:58,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-10-13 09:42:58,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2331 transitions. [2020-10-13 09:42:58,266 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2331 transitions. Word has length 25 [2020-10-13 09:42:58,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:42:58,267 INFO L479 AbstractCegarLoop]: Abstraction has 1425 states and 2331 transitions. [2020-10-13 09:42:58,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:42:58,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2331 transitions. [2020-10-13 09:42:58,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-13 09:42:58,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:42:58,279 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:42:58,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:42:58,280 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:42:58,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:42:58,280 INFO L82 PathProgramCache]: Analyzing trace with hash 277822566, now seen corresponding path program 1 times [2020-10-13 09:42:58,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:42:58,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264726737] [2020-10-13 09:42:58,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:42:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:58,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:58,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:59,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:59,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 09:42:59,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:42:59,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 900 [2020-10-13 09:42:59,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:59,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:42:59,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 09:42:59,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 09:42:59,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:42:59,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:42:59,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:59,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:59,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:59,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:42:59,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:42:59,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:42:59,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:59,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:42:59,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:42:59,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:42:59,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:42:59,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:42:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:59,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:59,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:59,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:42:59,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:42:59,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 09:42:59,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:59,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:42:59,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:42:59,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 09:42:59,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-13 09:42:59,563 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:42:59,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264726737] [2020-10-13 09:42:59,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:42:59,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:42:59,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103173300] [2020-10-13 09:42:59,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:42:59,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:42:59,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:42:59,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:42:59,568 INFO L87 Difference]: Start difference. First operand 1425 states and 2331 transitions. Second operand 6 states. [2020-10-13 09:43:13,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:43:13,784 INFO L93 Difference]: Finished difference Result 5709 states and 9469 transitions. [2020-10-13 09:43:13,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:43:13,785 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2020-10-13 09:43:13,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:43:13,811 INFO L225 Difference]: With dead ends: 5709 [2020-10-13 09:43:13,811 INFO L226 Difference]: Without dead ends: 4290 [2020-10-13 09:43:13,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:43:13,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4290 states. [2020-10-13 09:43:13,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4290 to 4278. [2020-10-13 09:43:13,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4278 states. [2020-10-13 09:43:13,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4278 states to 4278 states and 6520 transitions. [2020-10-13 09:43:13,953 INFO L78 Accepts]: Start accepts. Automaton has 4278 states and 6520 transitions. Word has length 95 [2020-10-13 09:43:13,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:43:13,954 INFO L479 AbstractCegarLoop]: Abstraction has 4278 states and 6520 transitions. [2020-10-13 09:43:13,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:43:13,955 INFO L276 IsEmpty]: Start isEmpty. Operand 4278 states and 6520 transitions. [2020-10-13 09:43:13,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 09:43:13,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:43:13,958 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:43:13,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:43:13,959 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:43:13,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:43:13,959 INFO L82 PathProgramCache]: Analyzing trace with hash 425980331, now seen corresponding path program 1 times [2020-10-13 09:43:13,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:43:13,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887811142] [2020-10-13 09:43:13,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:43:13,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:13,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:14,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:14,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:14,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 09:43:14,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:43:14,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 500 [2020-10-13 09:43:14,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:14,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:43:14,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 09:43:14,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 09:43:14,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:43:14,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:43:14,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:14,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:14,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:14,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:43:14,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:14,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:43:14,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:14,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:43:14,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:14,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:43:14,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:43:14,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:43:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:14,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:14,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:14,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:43:14,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:14,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 09:43:14,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:14,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:43:14,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:14,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:43:14,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:43:14,701 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:43:14,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887811142] [2020-10-13 09:43:14,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:43:14,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:43:14,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894396238] [2020-10-13 09:43:14,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:43:14,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:43:14,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:43:14,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:43:14,705 INFO L87 Difference]: Start difference. First operand 4278 states and 6520 transitions. Second operand 6 states. [2020-10-13 09:43:27,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:43:27,178 INFO L93 Difference]: Finished difference Result 12815 states and 19831 transitions. [2020-10-13 09:43:27,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:43:27,183 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2020-10-13 09:43:27,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:43:27,237 INFO L225 Difference]: With dead ends: 12815 [2020-10-13 09:43:27,237 INFO L226 Difference]: Without dead ends: 8543 [2020-10-13 09:43:27,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:43:27,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8543 states. [2020-10-13 09:43:27,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8543 to 8535. [2020-10-13 09:43:27,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8535 states. [2020-10-13 09:43:27,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8535 states to 8535 states and 12691 transitions. [2020-10-13 09:43:27,574 INFO L78 Accepts]: Start accepts. Automaton has 8535 states and 12691 transitions. Word has length 96 [2020-10-13 09:43:27,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:43:27,575 INFO L479 AbstractCegarLoop]: Abstraction has 8535 states and 12691 transitions. [2020-10-13 09:43:27,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:43:27,575 INFO L276 IsEmpty]: Start isEmpty. Operand 8535 states and 12691 transitions. [2020-10-13 09:43:27,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2020-10-13 09:43:27,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:43:27,613 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:43:27,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:43:27,613 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:43:27,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:43:27,614 INFO L82 PathProgramCache]: Analyzing trace with hash -167440247, now seen corresponding path program 1 times [2020-10-13 09:43:27,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:43:27,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391274979] [2020-10-13 09:43:27,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:43:27,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:27,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:28,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:29,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:31,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:31,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 441 [2020-10-13 09:43:31,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:43:31,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3681 [2020-10-13 09:43:31,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:31,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:43:31,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 413 [2020-10-13 09:43:31,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 09:43:31,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:31,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:43:31,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:31,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:31,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:31,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:43:31,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:31,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:43:31,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:31,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:43:31,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:31,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:43:31,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:43:31,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:43:31,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:31,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:32,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:32,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-13 09:43:32,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:32,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-10-13 09:43:32,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:32,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:43:32,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:32,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 398 [2020-10-13 09:43:32,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:32,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:43:32,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:32,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:32,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:32,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 09:43:32,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:32,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-13 09:43:32,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:32,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:43:32,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:32,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 09:43:32,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:43:33,153 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:43:33,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391274979] [2020-10-13 09:43:33,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:43:33,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:43:33,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892921625] [2020-10-13 09:43:33,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:43:33,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:43:33,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:43:33,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:43:33,164 INFO L87 Difference]: Start difference. First operand 8535 states and 12691 transitions. Second operand 5 states. [2020-10-13 09:43:40,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:43:40,405 INFO L93 Difference]: Finished difference Result 17091 states and 25462 transitions. [2020-10-13 09:43:40,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:43:40,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 429 [2020-10-13 09:43:40,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:43:40,457 INFO L225 Difference]: With dead ends: 17091 [2020-10-13 09:43:40,457 INFO L226 Difference]: Without dead ends: 8543 [2020-10-13 09:43:40,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 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 09:43:40,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8543 states. [2020-10-13 09:43:40,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8543 to 8535. [2020-10-13 09:43:40,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8535 states. [2020-10-13 09:43:40,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8535 states to 8535 states and 12683 transitions. [2020-10-13 09:43:40,766 INFO L78 Accepts]: Start accepts. Automaton has 8535 states and 12683 transitions. Word has length 429 [2020-10-13 09:43:40,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:43:40,769 INFO L479 AbstractCegarLoop]: Abstraction has 8535 states and 12683 transitions. [2020-10-13 09:43:40,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:43:40,769 INFO L276 IsEmpty]: Start isEmpty. Operand 8535 states and 12683 transitions. [2020-10-13 09:43:40,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2020-10-13 09:43:40,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:43:40,793 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:43:40,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:43:40,794 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:43:40,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:43:40,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1505404310, now seen corresponding path program 1 times [2020-10-13 09:43:40,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:43:40,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757170166] [2020-10-13 09:43:40,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:43:40,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:40,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:41,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:42,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:45,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:45,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 502 [2020-10-13 09:43:45,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:43:45,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-13 09:43:45,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:45,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:43:45,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-13 09:43:45,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 09:43:45,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:43:46,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:43:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:46,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:46,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:46,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:43:46,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:46,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:43:46,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:46,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:43:46,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:46,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:43:46,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:43:46,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:43:46,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:46,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:46,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:46,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:43:46,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:46,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 09:43:46,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:46,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:43:46,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:46,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:43:46,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 09:43:46,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 09:43:46,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:46,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:46,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:46,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 395 [2020-10-13 09:43:46,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:46,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-10-13 09:43:46,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:46,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:43:46,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:46,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 386 [2020-10-13 09:43:46,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:43:46,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:43:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:46,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:46,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:46,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 09:43:46,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:46,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-13 09:43:46,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:46,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:43:46,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:46,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 09:43:46,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:43:47,320 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-13 09:43:47,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757170166] [2020-10-13 09:43:47,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:43:47,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:43:47,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568923565] [2020-10-13 09:43:47,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:43:47,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:43:47,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:43:47,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:43:47,325 INFO L87 Difference]: Start difference. First operand 8535 states and 12683 transitions. Second operand 5 states. [2020-10-13 09:43:57,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:43:57,745 INFO L93 Difference]: Finished difference Result 21323 states and 32898 transitions. [2020-10-13 09:43:57,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:43:57,747 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 488 [2020-10-13 09:43:57,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:43:57,815 INFO L225 Difference]: With dead ends: 21323 [2020-10-13 09:43:57,815 INFO L226 Difference]: Without dead ends: 12794 [2020-10-13 09:43:57,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 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 09:43:57,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12794 states. [2020-10-13 09:43:58,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12794 to 10680. [2020-10-13 09:43:58,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10680 states. [2020-10-13 09:43:58,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10680 states to 10680 states and 15359 transitions. [2020-10-13 09:43:58,132 INFO L78 Accepts]: Start accepts. Automaton has 10680 states and 15359 transitions. Word has length 488 [2020-10-13 09:43:58,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:43:58,134 INFO L479 AbstractCegarLoop]: Abstraction has 10680 states and 15359 transitions. [2020-10-13 09:43:58,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:43:58,134 INFO L276 IsEmpty]: Start isEmpty. Operand 10680 states and 15359 transitions. [2020-10-13 09:43:58,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2020-10-13 09:43:58,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:43:58,175 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:43:58,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:43:58,176 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:43:58,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:43:58,177 INFO L82 PathProgramCache]: Analyzing trace with hash -187461318, now seen corresponding path program 1 times [2020-10-13 09:43:58,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:43:58,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995186541] [2020-10-13 09:43:58,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:43:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:58,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:58,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:59,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:03,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:03,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 526 [2020-10-13 09:44:03,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:44:03,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 09:44:03,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:03,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:44:03,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 498 [2020-10-13 09:44:03,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 09:44:03,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:03,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:44:03,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:03,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:03,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:03,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:44:03,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:03,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 09:44:03,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:03,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:44:03,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:03,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:44:03,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:03,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:44:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:03,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:03,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:03,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:44:03,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:03,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:44:03,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:03,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:44:03,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:03,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:44:03,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:03,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 09:44:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:03,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:03,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:03,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-13 09:44:03,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:03,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-13 09:44:03,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:03,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:44:03,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:03,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 410 [2020-10-13 09:44:03,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:03,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:44:03,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:03,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:03,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:03,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 09:44:03,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:03,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 09:44:03,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:03,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:44:03,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:03,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 09:44:03,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:04,475 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-13 09:44:04,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995186541] [2020-10-13 09:44:04,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:44:04,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:44:04,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666087014] [2020-10-13 09:44:04,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:44:04,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:44:04,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:44:04,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:44:04,480 INFO L87 Difference]: Start difference. First operand 10680 states and 15359 transitions. Second operand 5 states. [2020-10-13 09:44:15,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:44:15,607 INFO L93 Difference]: Finished difference Result 25613 states and 38348 transitions. [2020-10-13 09:44:15,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:44:15,609 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 512 [2020-10-13 09:44:15,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:44:15,677 INFO L225 Difference]: With dead ends: 25613 [2020-10-13 09:44:15,678 INFO L226 Difference]: Without dead ends: 14939 [2020-10-13 09:44:15,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 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 09:44:15,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14939 states. [2020-10-13 09:44:16,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14939 to 12123. [2020-10-13 09:44:16,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12123 states. [2020-10-13 09:44:16,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12123 states to 12123 states and 17182 transitions. [2020-10-13 09:44:16,070 INFO L78 Accepts]: Start accepts. Automaton has 12123 states and 17182 transitions. Word has length 512 [2020-10-13 09:44:16,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:44:16,071 INFO L479 AbstractCegarLoop]: Abstraction has 12123 states and 17182 transitions. [2020-10-13 09:44:16,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:44:16,072 INFO L276 IsEmpty]: Start isEmpty. Operand 12123 states and 17182 transitions. [2020-10-13 09:44:16,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2020-10-13 09:44:16,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:44:16,103 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:44:16,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:44:16,103 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:44:16,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:44:16,104 INFO L82 PathProgramCache]: Analyzing trace with hash -826580599, now seen corresponding path program 1 times [2020-10-13 09:44:16,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:44:16,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483965086] [2020-10-13 09:44:16,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:44:16,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:16,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:17,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:18,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:21,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:21,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 587 [2020-10-13 09:44:21,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:44:21,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4828 [2020-10-13 09:44:21,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:21,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:44:21,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 556 [2020-10-13 09:44:21,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 09:44:21,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:21,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:44:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:21,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:21,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:21,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:44:21,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:21,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:44:21,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:21,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:44:21,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:21,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:44:21,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:44:21,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:44:21,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:21,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:21,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:21,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 553 [2020-10-13 09:44:21,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:21,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 418 [2020-10-13 09:44:21,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:21,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:44:21,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:21,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 541 [2020-10-13 09:44:21,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:21,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:44:21,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:22,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:22,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:22,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-13 09:44:22,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:22,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-13 09:44:22,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:22,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:44:22,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:22,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 256 [2020-10-13 09:44:22,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:22,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:44:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:22,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:22,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:22,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 09:44:22,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:22,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 09:44:22,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:22,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:44:22,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:22,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 09:44:22,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:44:22,753 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:44:22,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483965086] [2020-10-13 09:44:22,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:44:22,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:44:22,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319942955] [2020-10-13 09:44:22,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:44:22,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:44:22,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:44:22,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:44:22,757 INFO L87 Difference]: Start difference. First operand 12123 states and 17182 transitions. Second operand 5 states. [2020-10-13 09:44:29,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:44:29,453 INFO L93 Difference]: Finished difference Result 24274 states and 34499 transitions. [2020-10-13 09:44:29,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:44:29,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 573 [2020-10-13 09:44:29,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:44:29,500 INFO L225 Difference]: With dead ends: 24274 [2020-10-13 09:44:29,501 INFO L226 Difference]: Without dead ends: 12131 [2020-10-13 09:44:29,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 3 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 09:44:29,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12131 states. [2020-10-13 09:44:29,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12131 to 12123. [2020-10-13 09:44:29,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12123 states. [2020-10-13 09:44:29,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12123 states to 12123 states and 17170 transitions. [2020-10-13 09:44:29,796 INFO L78 Accepts]: Start accepts. Automaton has 12123 states and 17170 transitions. Word has length 573 [2020-10-13 09:44:29,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:44:29,798 INFO L479 AbstractCegarLoop]: Abstraction has 12123 states and 17170 transitions. [2020-10-13 09:44:29,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:44:29,798 INFO L276 IsEmpty]: Start isEmpty. Operand 12123 states and 17170 transitions. [2020-10-13 09:44:29,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2020-10-13 09:44:29,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:44:29,824 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:44:29,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:44:29,825 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:44:29,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:44:29,825 INFO L82 PathProgramCache]: Analyzing trace with hash 501461145, now seen corresponding path program 1 times [2020-10-13 09:44:29,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:44:29,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936497357] [2020-10-13 09:44:29,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:44:29,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:30,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:30,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:35,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:35,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 595 [2020-10-13 09:44:35,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:44:35,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-13 09:44:35,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:35,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 09:44:35,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:44:35,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 560 [2020-10-13 09:44:35,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:35,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:44:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:35,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:35,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:35,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:44:35,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:35,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:44:35,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:35,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:44:35,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:35,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:44:35,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:35,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:44:35,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:35,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:35,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:38,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:38,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 561 [2020-10-13 09:44:38,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:44:38,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3221 [2020-10-13 09:44:38,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:38,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 09:44:38,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:44:38,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 561 [2020-10-13 09:44:38,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:38,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:44:38,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:38,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:38,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:40,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:40,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-13 09:44:40,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:44:40,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1437 [2020-10-13 09:44:40,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:40,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:44:40,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:44:40,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 273 [2020-10-13 09:44:40,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:40,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:44:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:40,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:40,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:40,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 09:44:40,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:40,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 09:44:40,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:40,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:44:40,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:44:40,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 09:44:40,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:44:41,938 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:44:41,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936497357] [2020-10-13 09:44:41,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:44:41,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 09:44:41,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044267048] [2020-10-13 09:44:41,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 09:44:41,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:44:41,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 09:44:41,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-13 09:44:41,941 INFO L87 Difference]: Start difference. First operand 12123 states and 17170 transitions. Second operand 9 states. [2020-10-13 09:44:56,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:44:56,968 INFO L93 Difference]: Finished difference Result 32942 states and 47645 transitions. [2020-10-13 09:44:56,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 09:44:56,969 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 581 [2020-10-13 09:44:56,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:44:57,053 INFO L225 Difference]: With dead ends: 32942 [2020-10-13 09:44:57,053 INFO L226 Difference]: Without dead ends: 20825 [2020-10-13 09:44:57,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-10-13 09:44:57,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20825 states. [2020-10-13 09:44:57,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20825 to 20739. [2020-10-13 09:44:57,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20739 states. [2020-10-13 09:44:57,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20739 states to 20739 states and 29346 transitions. [2020-10-13 09:44:57,740 INFO L78 Accepts]: Start accepts. Automaton has 20739 states and 29346 transitions. Word has length 581 [2020-10-13 09:44:57,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:44:57,741 INFO L479 AbstractCegarLoop]: Abstraction has 20739 states and 29346 transitions. [2020-10-13 09:44:57,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 09:44:57,742 INFO L276 IsEmpty]: Start isEmpty. Operand 20739 states and 29346 transitions. [2020-10-13 09:44:57,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 941 [2020-10-13 09:44:57,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:44:57,818 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:44:57,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:44:57,819 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:44:57,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:44:57,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1019007430, now seen corresponding path program 1 times [2020-10-13 09:44:57,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:44:57,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150295327] [2020-10-13 09:44:57,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:44:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:58,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:58,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:58,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:58,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:02,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:02,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 960 [2020-10-13 09:45:02,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:45:02,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 09:45:02,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:02,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:45:02,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-13 09:45:02,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 09:45:02,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:03,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:45:03,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:03,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:03,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:03,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:45:03,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:03,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:45:03,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:03,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:45:03,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:03,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:45:03,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:03,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:45:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:03,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:03,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:03,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-13 09:45:03,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:03,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 09:45:03,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:03,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:45:03,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:03,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-13 09:45:03,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:45:03,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-13 09:45:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:03,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:03,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:03,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:03,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 09:45:03,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:45:03,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-13 09:45:03,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:03,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:45:03,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:45:03,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 09:45:03,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 09:45:03,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-10-13 09:45:03,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:03,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:03,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:03,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 09:45:03,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:03,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 09:45:03,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:03,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:45:03,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 09:45:03,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:45:03,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:45:03,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-10-13 09:45:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:03,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:04,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:04,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 561 [2020-10-13 09:45:04,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:04,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-13 09:45:04,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:04,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:45:04,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 558 [2020-10-13 09:45:04,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:45:04,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:45:04,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:45:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:04,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:04,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:04,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-13 09:45:04,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:04,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 09:45:04,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:04,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:45:04,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:04,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:45:04,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:04,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:45:04,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:04,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:04,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:04,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 09:45:04,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:04,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 09:45:04,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:04,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:45:04,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:04,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:45:04,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:05,050 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 166 proven. 169 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2020-10-13 09:45:05,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150295327] [2020-10-13 09:45:05,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:45:05,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:45:05,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495845487] [2020-10-13 09:45:05,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:45:05,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:45:05,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:45:05,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:45:05,053 INFO L87 Difference]: Start difference. First operand 20739 states and 29346 transitions. Second operand 6 states. [2020-10-13 09:45:14,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:45:14,820 INFO L93 Difference]: Finished difference Result 40895 states and 58289 transitions. [2020-10-13 09:45:14,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:45:14,821 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 940 [2020-10-13 09:45:14,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:45:14,892 INFO L225 Difference]: With dead ends: 40895 [2020-10-13 09:45:14,892 INFO L226 Difference]: Without dead ends: 20783 [2020-10-13 09:45:14,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 09:45:14,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20783 states. [2020-10-13 09:45:15,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20783 to 20731. [2020-10-13 09:45:15,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20731 states. [2020-10-13 09:45:15,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20731 states to 20731 states and 26597 transitions. [2020-10-13 09:45:15,436 INFO L78 Accepts]: Start accepts. Automaton has 20731 states and 26597 transitions. Word has length 940 [2020-10-13 09:45:15,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:45:15,436 INFO L479 AbstractCegarLoop]: Abstraction has 20731 states and 26597 transitions. [2020-10-13 09:45:15,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:45:15,437 INFO L276 IsEmpty]: Start isEmpty. Operand 20731 states and 26597 transitions. [2020-10-13 09:45:15,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1260 [2020-10-13 09:45:15,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:45:15,508 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:45:15,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:45:15,509 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:45:15,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:45:15,510 INFO L82 PathProgramCache]: Analyzing trace with hash -110366927, now seen corresponding path program 1 times [2020-10-13 09:45:15,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:45:15,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193372978] [2020-10-13 09:45:15,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:45:15,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:15,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:16,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:17,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:20,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:20,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1283 [2020-10-13 09:45:20,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:45:20,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-13 09:45:20,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:20,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:45:20,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 535 [2020-10-13 09:45:20,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 09:45:20,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:20,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:45:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:20,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:21,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:21,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:45:21,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:21,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:45:21,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:21,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:45:21,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:21,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:45:21,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:21,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:45:21,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:21,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:21,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:21,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-13 09:45:21,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:21,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-10-13 09:45:21,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:21,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:45:21,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:21,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 520 [2020-10-13 09:45:21,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:21,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:45:21,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:21,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:21,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:21,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-13 09:45:21,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:21,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-13 09:45:21,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:21,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:45:21,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:21,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-10-13 09:45:21,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:21,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:45:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:21,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:21,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:21,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 09:45:21,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:21,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 09:45:21,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:21,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:45:21,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:21,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 09:45:21,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:45:22,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-13 09:45:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:22,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:22,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:22,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:45:22,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:22,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 09:45:22,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:22,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:45:22,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:45:22,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 09:45:22,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:22,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 606 [2020-10-13 09:45:22,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:22,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:22,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:22,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:45:22,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:22,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 09:45:22,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:22,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:45:22,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 09:45:22,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:45:22,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:22,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 686 [2020-10-13 09:45:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:22,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:22,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:22,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 561 [2020-10-13 09:45:22,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:22,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-13 09:45:22,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:22,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:45:22,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 558 [2020-10-13 09:45:22,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:45:22,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:22,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:45:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:22,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:22,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:22,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-13 09:45:22,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:22,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 09:45:22,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:22,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:45:22,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:22,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:45:22,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:22,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:45:22,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:22,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:22,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:22,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 09:45:22,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:22,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 09:45:22,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:22,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:45:22,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:22,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:45:22,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:23,498 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 148 proven. 144 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked. [2020-10-13 09:45:23,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193372978] [2020-10-13 09:45:23,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:45:23,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:45:23,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114588896] [2020-10-13 09:45:23,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:45:23,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:45:23,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:45:23,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:45:23,501 INFO L87 Difference]: Start difference. First operand 20731 states and 26597 transitions. Second operand 7 states. [2020-10-13 09:45:31,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:45:31,120 INFO L93 Difference]: Finished difference Result 45977 states and 60634 transitions. [2020-10-13 09:45:31,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:45:31,125 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1259 [2020-10-13 09:45:31,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:45:31,230 INFO L225 Difference]: With dead ends: 45977 [2020-10-13 09:45:31,230 INFO L226 Difference]: Without dead ends: 25954 [2020-10-13 09:45:31,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:45:31,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25954 states. [2020-10-13 09:45:32,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25954 to 25906. [2020-10-13 09:45:32,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25906 states. [2020-10-13 09:45:32,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25906 states to 25906 states and 33472 transitions. [2020-10-13 09:45:32,134 INFO L78 Accepts]: Start accepts. Automaton has 25906 states and 33472 transitions. Word has length 1259 [2020-10-13 09:45:32,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:45:32,135 INFO L479 AbstractCegarLoop]: Abstraction has 25906 states and 33472 transitions. [2020-10-13 09:45:32,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:45:32,136 INFO L276 IsEmpty]: Start isEmpty. Operand 25906 states and 33472 transitions. [2020-10-13 09:45:32,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1109 [2020-10-13 09:45:32,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:45:32,190 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:45:32,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:45:32,190 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:45:32,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:45:32,191 INFO L82 PathProgramCache]: Analyzing trace with hash -228684062, now seen corresponding path program 1 times [2020-10-13 09:45:32,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:45:32,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901991621] [2020-10-13 09:45:32,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:45:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:32,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:32,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:37,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:37,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1128 [2020-10-13 09:45:37,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:45:37,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4814 [2020-10-13 09:45:37,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:37,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 09:45:37,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 535 [2020-10-13 09:45:37,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 563 [2020-10-13 09:45:37,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:37,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:45:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:37,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:37,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:37,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:45:37,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:37,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:45:37,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:37,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:45:37,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:37,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:45:37,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:37,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:45:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:37,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:37,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:37,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-13 09:45:37,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:37,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-13 09:45:37,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:37,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:45:37,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:37,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 520 [2020-10-13 09:45:37,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:37,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:45:37,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:37,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:37,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:37,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-13 09:45:37,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:37,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-13 09:45:37,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:37,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:45:37,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:37,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-10-13 09:45:37,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:37,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:45:37,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:37,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:37,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:37,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 09:45:37,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:37,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:45:37,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:37,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:45:37,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:37,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 09:45:37,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:38,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-13 09:45:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:38,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:39,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:39,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 561 [2020-10-13 09:45:39,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:39,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 912 [2020-10-13 09:45:39,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:39,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 09:45:39,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:45:39,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 561 [2020-10-13 09:45:39,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:39,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:45:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:39,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:39,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:39,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-13 09:45:39,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:39,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-10-13 09:45:39,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:39,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:45:39,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:45:39,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 273 [2020-10-13 09:45:39,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:39,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:45:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:39,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:39,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:39,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 09:45:39,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:39,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 09:45:39,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:39,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:45:39,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:45:39,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 09:45:39,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:42,028 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 552 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-13 09:45:42,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901991621] [2020-10-13 09:45:42,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:45:42,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:45:42,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506193538] [2020-10-13 09:45:42,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:45:42,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:45:42,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:45:42,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:45:42,032 INFO L87 Difference]: Start difference. First operand 25906 states and 33472 transitions. Second operand 8 states. [2020-10-13 09:45:55,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:45:55,685 INFO L93 Difference]: Finished difference Result 53454 states and 70497 transitions. [2020-10-13 09:45:55,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 09:45:55,686 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1108 [2020-10-13 09:45:55,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:45:55,763 INFO L225 Difference]: With dead ends: 53454 [2020-10-13 09:45:55,763 INFO L226 Difference]: Without dead ends: 24672 [2020-10-13 09:45:55,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-13 09:45:55,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24672 states. [2020-10-13 09:45:56,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24672 to 22529. [2020-10-13 09:45:56,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22529 states. [2020-10-13 09:45:56,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22529 states to 22529 states and 26966 transitions. [2020-10-13 09:45:56,292 INFO L78 Accepts]: Start accepts. Automaton has 22529 states and 26966 transitions. Word has length 1108 [2020-10-13 09:45:56,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:45:56,293 INFO L479 AbstractCegarLoop]: Abstraction has 22529 states and 26966 transitions. [2020-10-13 09:45:56,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:45:56,293 INFO L276 IsEmpty]: Start isEmpty. Operand 22529 states and 26966 transitions. [2020-10-13 09:45:56,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1402 [2020-10-13 09:45:56,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:45:56,350 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 09:45:56,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:45:56,352 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:45:56,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:45:56,352 INFO L82 PathProgramCache]: Analyzing trace with hash -642918795, now seen corresponding path program 1 times [2020-10-13 09:45:56,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:45:56,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961053971] [2020-10-13 09:45:56,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:45:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:56,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:56,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:57,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:59,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:01,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:01,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1427 [2020-10-13 09:46:01,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:46:01,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-13 09:46:01,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:01,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:46:01,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 765 [2020-10-13 09:46:01,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 09:46:01,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:01,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:46:01,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:01,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:01,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:01,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:46:01,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:01,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:46:01,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:01,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:01,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:01,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:01,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:01,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:46:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:01,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:01,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:01,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-13 09:46:01,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:01,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-13 09:46:01,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:01,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:01,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:01,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:01,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:02,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:46:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:02,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:02,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:02,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-13 09:46:02,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:02,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 09:46:02,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:02,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:02,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:02,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:02,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:02,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:46:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:02,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:02,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:02,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 09:46:02,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:02,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:46:02,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:02,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:02,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:02,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:02,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:02,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-13 09:46:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:02,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:02,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:02,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:46:02,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:02,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 09:46:02,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:02,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:02,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:02,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:02,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:02,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2020-10-13 09:46:02,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:02,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:02,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:02,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-13 09:46:02,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:02,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 09:46:02,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:02,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:46:02,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:02,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-13 09:46:02,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:02,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 755 [2020-10-13 09:46:02,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:02,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:02,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:02,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 09:46:02,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:02,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 09:46:02,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:02,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:46:02,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:46:02,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:46:02,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:02,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 828 [2020-10-13 09:46:02,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:02,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:02,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:02,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 561 [2020-10-13 09:46:02,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:02,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-13 09:46:02,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:02,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:02,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 558 [2020-10-13 09:46:02,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:02,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:02,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:46:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:02,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:02,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:02,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-13 09:46:02,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:02,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 09:46:02,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:03,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:03,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:03,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:03,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:03,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:46:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:03,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:03,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:03,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 09:46:03,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:03,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 09:46:03,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:03,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:03,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:03,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:03,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:04,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1447 backedges. 322 proven. 72 refuted. 0 times theorem prover too weak. 1053 trivial. 0 not checked. [2020-10-13 09:46:04,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961053971] [2020-10-13 09:46:04,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:46:04,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:46:04,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934854360] [2020-10-13 09:46:04,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:46:04,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:46:04,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:46:04,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:46:04,004 INFO L87 Difference]: Start difference. First operand 22529 states and 26966 transitions. Second operand 7 states.