/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/Problem16_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:19:41,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:19:41,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:19:41,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:19:41,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:19:41,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:19:41,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:19:41,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:19:41,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:19:41,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:19:41,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:19:41,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:19:41,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:19:41,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:19:41,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:19:41,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:19:41,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:19:41,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:19:41,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:19:41,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:19:41,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:19:41,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:19:41,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:19:41,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:19:41,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:19:41,071 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:19:41,071 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:19:41,072 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:19:41,073 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:19:41,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:19:41,074 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:19:41,075 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:19:41,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:19:41,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:19:41,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:19:41,078 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:19:41,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:19:41,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:19:41,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:19:41,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:19:41,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:19:41,084 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 09:19:41,107 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:19:41,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:19:41,109 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:19:41,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:19:41,109 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:19:41,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:19:41,110 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:19:41,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:19:41,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:19:41,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:19:41,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:19:41,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:19:41,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:19:41,111 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:19:41,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:19:41,112 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:19:41,112 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:19:41,112 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:19:41,112 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:19:41,113 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:19:41,113 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:19:41,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:19:41,113 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:19:41,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:19:41,114 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:19:41,114 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:19:41,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:19:41,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:19:41,114 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:19:41,115 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 09:19:41,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:19:41,494 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:19:41,500 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:19:41,504 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:19:41,505 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:19:41,507 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label29.c [2020-10-13 09:19:41,584 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70fce3b2f/b863c60af766472da00589801cf5be40/FLAG89f68fb6c [2020-10-13 09:19:42,266 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:19:42,267 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label29.c [2020-10-13 09:19:42,287 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70fce3b2f/b863c60af766472da00589801cf5be40/FLAG89f68fb6c [2020-10-13 09:19:42,418 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70fce3b2f/b863c60af766472da00589801cf5be40 [2020-10-13 09:19:42,429 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:19:42,431 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:19:42,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:19:42,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:19:42,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:19:42,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:19:42" (1/1) ... [2020-10-13 09:19:42,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60fd920f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:42, skipping insertion in model container [2020-10-13 09:19:42,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:19:42" (1/1) ... [2020-10-13 09:19:42,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:19:42,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:19:43,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:19:43,649 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:19:43,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:19:43,995 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:19:43,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:43 WrapperNode [2020-10-13 09:19:43,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:19:43,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:19:43,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:19:43,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:19:44,013 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:43" (1/1) ... [2020-10-13 09:19:44,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:43" (1/1) ... [2020-10-13 09:19:44,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:43" (1/1) ... [2020-10-13 09:19:44,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:43" (1/1) ... [2020-10-13 09:19:44,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:43" (1/1) ... [2020-10-13 09:19:44,153 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:43" (1/1) ... [2020-10-13 09:19:44,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:43" (1/1) ... [2020-10-13 09:19:44,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:19:44,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:19:44,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:19:44,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:19:44,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:43" (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 09:19:44,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:19:44,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:19:44,246 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:19:44,246 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:19:44,246 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:19:44,246 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:19:44,246 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:19:44,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:19:44,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:19:44,248 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:19:44,248 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:19:44,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:19:44,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:19:46,336 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:19:46,336 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:19:46,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:19:46 BoogieIcfgContainer [2020-10-13 09:19:46,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:19:46,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:19:46,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:19:46,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:19:46,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:19:42" (1/3) ... [2020-10-13 09:19:46,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cba6a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:19:46, skipping insertion in model container [2020-10-13 09:19:46,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:43" (2/3) ... [2020-10-13 09:19:46,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cba6a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:19:46, skipping insertion in model container [2020-10-13 09:19:46,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:19:46" (3/3) ... [2020-10-13 09:19:46,355 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label29.c [2020-10-13 09:19:46,367 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:19:46,376 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:19:46,390 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:19:46,418 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:19:46,418 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:19:46,418 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:19:46,418 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:19:46,418 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:19:46,419 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:19:46,419 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:19:46,419 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:19:46,446 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2020-10-13 09:19:46,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 09:19:46,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:46,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:19:46,456 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:46,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:46,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1301398987, now seen corresponding path program 1 times [2020-10-13 09:19:46,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:46,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505445457] [2020-10-13 09:19:46,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:46,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:46,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:47,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:47,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 09:19:47,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:47,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-10-13 09:19:47,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:47,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:19:47,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:19:47,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 09:19:47,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:19:47,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:47,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:47,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:47,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:47,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:47,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:47,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 09:19:47,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:47,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:47,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:47,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:19:47,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:47,238 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 09:19:47,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505445457] [2020-10-13 09:19:47,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:19:47,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 09:19:47,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877693503] [2020-10-13 09:19:47,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:19:47,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:47,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:19:47,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:19:47,264 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 5 states. [2020-10-13 09:19:52,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:52,846 INFO L93 Difference]: Finished difference Result 1515 states and 2849 transitions. [2020-10-13 09:19:52,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:19:52,850 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-10-13 09:19:52,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:52,879 INFO L225 Difference]: With dead ends: 1515 [2020-10-13 09:19:52,879 INFO L226 Difference]: Without dead ends: 1038 [2020-10-13 09:19:52,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:19:52,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2020-10-13 09:19:53,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1034. [2020-10-13 09:19:53,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1034 states. [2020-10-13 09:19:53,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1485 transitions. [2020-10-13 09:19:53,026 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1485 transitions. Word has length 52 [2020-10-13 09:19:53,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:53,026 INFO L479 AbstractCegarLoop]: Abstraction has 1034 states and 1485 transitions. [2020-10-13 09:19:53,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:19:53,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1485 transitions. [2020-10-13 09:19:53,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 09:19:53,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:53,033 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:19:53,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:19:53,034 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:53,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:53,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1632546648, now seen corresponding path program 1 times [2020-10-13 09:19:53,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:53,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202480416] [2020-10-13 09:19:53,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:53,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:53,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:53,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:54,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:54,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 09:19:54,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:19:54,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 961 [2020-10-13 09:19:54,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:54,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:54,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 09:19:54,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 09:19:54,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:19:54,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:54,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:54,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:54,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:54,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:54,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:19:54,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:54,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:54,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:54,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:54,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:19:54,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:54,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:54,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:54,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:54,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:19:54,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:54,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 09:19:54,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:54,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:54,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:54,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:19:54,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:54,303 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:19:54,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202480416] [2020-10-13 09:19:54,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:54,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:19:54,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000751970] [2020-10-13 09:19:54,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:19:54,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:54,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:19:54,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:19:54,308 INFO L87 Difference]: Start difference. First operand 1034 states and 1485 transitions. Second operand 5 states. [2020-10-13 09:19:58,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:58,132 INFO L93 Difference]: Finished difference Result 2408 states and 3593 transitions. [2020-10-13 09:19:58,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:19:58,133 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-13 09:19:58,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:58,145 INFO L225 Difference]: With dead ends: 2408 [2020-10-13 09:19:58,145 INFO L226 Difference]: Without dead ends: 1380 [2020-10-13 09:19:58,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:19:58,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2020-10-13 09:19:58,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1376. [2020-10-13 09:19:58,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1376 states. [2020-10-13 09:19:58,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 1900 transitions. [2020-10-13 09:19:58,225 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 1900 transitions. Word has length 128 [2020-10-13 09:19:58,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:58,228 INFO L479 AbstractCegarLoop]: Abstraction has 1376 states and 1900 transitions. [2020-10-13 09:19:58,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:19:58,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 1900 transitions. [2020-10-13 09:19:58,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-13 09:19:58,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:58,248 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:19:58,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:19:58,249 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:58,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:58,249 INFO L82 PathProgramCache]: Analyzing trace with hash -255710665, now seen corresponding path program 1 times [2020-10-13 09:19:58,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:58,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406314727] [2020-10-13 09:19:58,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:58,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:58,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:58,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:59,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:59,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:00,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:02,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:02,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:20:02,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:20:02,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4608 [2020-10-13 09:20:02,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:02,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:02,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 198 [2020-10-13 09:20:02,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 09:20:02,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:03,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:03,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:03,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:03,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:03,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:03,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:03,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:20:03,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:03,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:03,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:03,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:03,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:03,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:03,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:03,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:03,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:03,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:20:03,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:03,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 09:20:03,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:03,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:03,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:03,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:03,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:03,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 09:20:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:03,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:03,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:03,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:20:03,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:03,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 09:20:03,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:03,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:03,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:03,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-13 09:20:03,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:03,276 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-13 09:20:03,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406314727] [2020-10-13 09:20:03,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:03,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:20:03,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537340715] [2020-10-13 09:20:03,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:20:03,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:03,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:20:03,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:20:03,283 INFO L87 Difference]: Start difference. First operand 1376 states and 1900 transitions. Second operand 6 states. [2020-10-13 09:20:07,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:20:07,575 INFO L93 Difference]: Finished difference Result 3434 states and 4847 transitions. [2020-10-13 09:20:07,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:20:07,576 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 238 [2020-10-13 09:20:07,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:20:07,594 INFO L225 Difference]: With dead ends: 3434 [2020-10-13 09:20:07,594 INFO L226 Difference]: Without dead ends: 2064 [2020-10-13 09:20:07,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 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 09:20:07,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2064 states. [2020-10-13 09:20:07,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2064 to 2060. [2020-10-13 09:20:07,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2060 states. [2020-10-13 09:20:07,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 2817 transitions. [2020-10-13 09:20:07,661 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 2817 transitions. Word has length 238 [2020-10-13 09:20:07,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:20:07,663 INFO L479 AbstractCegarLoop]: Abstraction has 2060 states and 2817 transitions. [2020-10-13 09:20:07,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:20:07,663 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 2817 transitions. [2020-10-13 09:20:07,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-13 09:20:07,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:07,669 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:20:07,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:20:07,670 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:07,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:07,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1344487794, now seen corresponding path program 1 times [2020-10-13 09:20:07,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:07,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913360319] [2020-10-13 09:20:07,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:07,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:07,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:07,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:08,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:10,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:11,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:12,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:12,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:12,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:12,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-13 09:20:12,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 09:20:12,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-13 09:20:12,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:12,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:12,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 272 [2020-10-13 09:20:12,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 09:20:12,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:12,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:12,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:12,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:12,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:12,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:12,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:20:12,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:12,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:12,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:12,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:12,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:20:12,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:12,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:12,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:12,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:12,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:20:12,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:12,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 09:20:12,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:12,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:12,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:12,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:12,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:20:12,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 09:20:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:12,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:12,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:12,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:20:12,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:12,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 09:20:12,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:12,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:12,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:12,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:12,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:20:13,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-13 09:20:13,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:13,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:13,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:13,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:20:13,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:13,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 09:20:13,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:13,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:13,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:13,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 09:20:13,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:20:13,348 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 138 proven. 3 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2020-10-13 09:20:13,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913360319] [2020-10-13 09:20:13,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:13,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:20:13,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144622946] [2020-10-13 09:20:13,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:20:13,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:13,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:20:13,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:20:13,354 INFO L87 Difference]: Start difference. First operand 2060 states and 2817 transitions. Second operand 5 states. [2020-10-13 09:20:16,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:20:16,884 INFO L93 Difference]: Finished difference Result 6161 states and 8524 transitions. [2020-10-13 09:20:16,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:20:16,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 310 [2020-10-13 09:20:16,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:20:16,913 INFO L225 Difference]: With dead ends: 6161 [2020-10-13 09:20:16,913 INFO L226 Difference]: Without dead ends: 4107 [2020-10-13 09:20:16,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 09:20:16,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4107 states. [2020-10-13 09:20:17,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4107 to 3766. [2020-10-13 09:20:17,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3766 states. [2020-10-13 09:20:17,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3766 states to 3766 states and 4902 transitions. [2020-10-13 09:20:17,070 INFO L78 Accepts]: Start accepts. Automaton has 3766 states and 4902 transitions. Word has length 310 [2020-10-13 09:20:17,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:20:17,071 INFO L479 AbstractCegarLoop]: Abstraction has 3766 states and 4902 transitions. [2020-10-13 09:20:17,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:20:17,071 INFO L276 IsEmpty]: Start isEmpty. Operand 3766 states and 4902 transitions. [2020-10-13 09:20:17,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2020-10-13 09:20:17,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:17,084 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:20:17,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:20:17,084 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:17,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:17,085 INFO L82 PathProgramCache]: Analyzing trace with hash 861920798, now seen corresponding path program 1 times [2020-10-13 09:20:17,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:17,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541927161] [2020-10-13 09:20:17,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:17,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:17,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:17,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:17,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:18,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:18,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:21,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:21,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:22,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:22,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:22,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 459 [2020-10-13 09:20:22,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 09:20:22,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 09:20:22,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:22,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:22,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-13 09:20:22,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:20:22,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:22,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:22,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:22,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:22,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:22,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:22,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:20:22,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:22,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:22,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:22,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:22,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:22,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:22,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:22,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:22,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:22,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:20:22,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:22,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 09:20:22,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:22,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:22,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:22,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 09:20:22,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:22,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 09:20:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:22,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:22,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:22,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:22,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:20:22,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:20:22,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-13 09:20:22,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:22,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:22,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:20:22,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 09:20:22,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:22,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-13 09:20:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:22,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:22,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:22,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:20:22,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:22,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 09:20:22,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:22,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:22,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-13 09:20:22,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:22,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:22,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-10-13 09:20:22,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:22,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:22,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:22,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:20:22,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:22,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 09:20:22,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:22,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:22,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 09:20:22,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:22,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:23,268 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 268 proven. 162 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-10-13 09:20:23,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541927161] [2020-10-13 09:20:23,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:23,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:20:23,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802709563] [2020-10-13 09:20:23,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:20:23,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:23,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:20:23,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:20:23,276 INFO L87 Difference]: Start difference. First operand 3766 states and 4902 transitions. Second operand 6 states. [2020-10-13 09:20:27,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:20:27,085 INFO L93 Difference]: Finished difference Result 7652 states and 9966 transitions. [2020-10-13 09:20:27,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:20:27,086 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 443 [2020-10-13 09:20:27,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:20:27,106 INFO L225 Difference]: With dead ends: 7652 [2020-10-13 09:20:27,106 INFO L226 Difference]: Without dead ends: 3828 [2020-10-13 09:20:27,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 09:20:27,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3828 states. [2020-10-13 09:20:27,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3828 to 3766. [2020-10-13 09:20:27,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3766 states. [2020-10-13 09:20:27,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3766 states to 3766 states and 4659 transitions. [2020-10-13 09:20:27,210 INFO L78 Accepts]: Start accepts. Automaton has 3766 states and 4659 transitions. Word has length 443 [2020-10-13 09:20:27,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:20:27,210 INFO L479 AbstractCegarLoop]: Abstraction has 3766 states and 4659 transitions. [2020-10-13 09:20:27,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:20:27,211 INFO L276 IsEmpty]: Start isEmpty. Operand 3766 states and 4659 transitions. [2020-10-13 09:20:27,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2020-10-13 09:20:27,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:27,223 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 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 09:20:27,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:20:27,224 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:27,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:27,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1248060450, now seen corresponding path program 1 times [2020-10-13 09:20:27,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:27,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849135278] [2020-10-13 09:20:27,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:27,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:27,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:27,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:27,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:27,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:31,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:31,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:31,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:32,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:32,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 491 [2020-10-13 09:20:32,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 09:20:32,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-13 09:20:32,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:32,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:32,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-13 09:20:32,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:20:32,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:32,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:32,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:32,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:32,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:32,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:32,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:32,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:20:32,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:32,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:32,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:32,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:32,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:20:32,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:32,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:32,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:32,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 09:20:32,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:32,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-13 09:20:32,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:32,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:32,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:32,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 09:20:32,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:20:32,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-13 09:20:32,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:32,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:32,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:32,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:32,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:20:32,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:20:32,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 09:20:32,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:32,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:32,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:20:32,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 09:20:32,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:32,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-10-13 09:20:32,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:32,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:32,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:32,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:20:32,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:32,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 09:20:32,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:32,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:32,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-13 09:20:32,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:32,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:32,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2020-10-13 09:20:32,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:32,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:32,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:32,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:20:32,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:32,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 09:20:32,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:32,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:32,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 09:20:32,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:32,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:33,057 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 268 proven. 162 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2020-10-13 09:20:33,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849135278] [2020-10-13 09:20:33,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:33,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:20:33,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159722538] [2020-10-13 09:20:33,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:20:33,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:33,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:20:33,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:20:33,060 INFO L87 Difference]: Start difference. First operand 3766 states and 4659 transitions. Second operand 7 states. [2020-10-13 09:20:37,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:20:37,432 INFO L93 Difference]: Finished difference Result 9027 states and 11336 transitions. [2020-10-13 09:20:37,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:20:37,433 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 475 [2020-10-13 09:20:37,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:20:37,466 INFO L225 Difference]: With dead ends: 9027 [2020-10-13 09:20:37,466 INFO L226 Difference]: Without dead ends: 5190 [2020-10-13 09:20:37,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:20:37,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5190 states. [2020-10-13 09:20:37,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5190 to 4839. [2020-10-13 09:20:37,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4839 states. [2020-10-13 09:20:37,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4839 states to 4839 states and 6004 transitions. [2020-10-13 09:20:37,638 INFO L78 Accepts]: Start accepts. Automaton has 4839 states and 6004 transitions. Word has length 475 [2020-10-13 09:20:37,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:20:37,638 INFO L479 AbstractCegarLoop]: Abstraction has 4839 states and 6004 transitions. [2020-10-13 09:20:37,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:20:37,639 INFO L276 IsEmpty]: Start isEmpty. Operand 4839 states and 6004 transitions. [2020-10-13 09:20:37,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2020-10-13 09:20:37,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:37,659 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:20:37,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:20:37,660 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:37,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:37,660 INFO L82 PathProgramCache]: Analyzing trace with hash -270891339, now seen corresponding path program 1 times [2020-10-13 09:20:37,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:37,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967186683] [2020-10-13 09:20:37,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:37,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:37,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:37,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:38,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:39,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:39,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:39,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:42,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:42,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 534 [2020-10-13 09:20:42,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 09:20:42,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-13 09:20:42,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:42,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:42,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 176 [2020-10-13 09:20:42,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:20:42,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:42,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:42,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:42,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:42,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:42,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:42,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:20:42,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:42,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:42,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:42,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:42,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:42,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:42,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:42,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:42,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 09:20:42,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:42,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 09:20:42,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:42,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:42,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:42,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-13 09:20:42,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:43,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-13 09:20:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:43,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:43,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:43,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:43,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:20:43,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:20:43,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 09:20:43,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:43,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:43,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:20:43,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 09:20:43,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:43,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:20:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:43,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:43,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:43,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:20:43,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:43,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 09:20:43,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:43,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:43,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-13 09:20:43,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:43,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:43,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-10-13 09:20:43,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:43,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:43,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:43,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:20:43,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:43,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:20:43,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:43,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:43,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 09:20:43,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:43,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:43,365 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 268 proven. 162 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2020-10-13 09:20:43,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967186683] [2020-10-13 09:20:43,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:43,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:20:43,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137504957] [2020-10-13 09:20:43,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:20:43,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:43,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:20:43,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:20:43,367 INFO L87 Difference]: Start difference. First operand 4839 states and 6004 transitions. Second operand 7 states. [2020-10-13 09:20:46,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:20:46,247 INFO L93 Difference]: Finished difference Result 9790 states and 12312 transitions. [2020-10-13 09:20:46,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:20:46,249 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 518 [2020-10-13 09:20:46,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:20:46,274 INFO L225 Difference]: With dead ends: 9790 [2020-10-13 09:20:46,275 INFO L226 Difference]: Without dead ends: 4896 [2020-10-13 09:20:46,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:20:46,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4896 states. [2020-10-13 09:20:46,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4896 to 3440. [2020-10-13 09:20:46,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3440 states. [2020-10-13 09:20:46,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3440 states to 3440 states and 4005 transitions. [2020-10-13 09:20:46,421 INFO L78 Accepts]: Start accepts. Automaton has 3440 states and 4005 transitions. Word has length 518 [2020-10-13 09:20:46,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:20:46,422 INFO L479 AbstractCegarLoop]: Abstraction has 3440 states and 4005 transitions. [2020-10-13 09:20:46,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:20:46,423 INFO L276 IsEmpty]: Start isEmpty. Operand 3440 states and 4005 transitions. [2020-10-13 09:20:46,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2020-10-13 09:20:46,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:46,431 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:20:46,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:20:46,432 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:46,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:46,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1328529318, now seen corresponding path program 1 times [2020-10-13 09:20:46,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:46,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888453412] [2020-10-13 09:20:46,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:46,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:46,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:46,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:46,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:46,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:48,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:49,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:51,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:51,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 551 [2020-10-13 09:20:51,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:20:51,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 09:20:51,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:51,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:20:51,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-13 09:20:51,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:20:51,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:51,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:51,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:51,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:51,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:51,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:51,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:20:51,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:51,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:51,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:51,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:51,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:51,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:51,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:51,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:51,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:51,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 09:20:51,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:51,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 09:20:51,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:51,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:51,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:51,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-13 09:20:51,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:51,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-13 09:20:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:51,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:51,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:51,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:51,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:20:51,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:20:51,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-13 09:20:51,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:51,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:20:51,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:20:51,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 09:20:51,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:52,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-10-13 09:20:52,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:52,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:52,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:52,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:20:52,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:52,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 09:20:52,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:52,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:52,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-13 09:20:52,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:52,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:52,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-10-13 09:20:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:52,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:52,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:52,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:20:52,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:52,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 09:20:52,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:52,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:52,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 09:20:52,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:52,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:52,881 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 268 proven. 162 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2020-10-13 09:20:52,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888453412] [2020-10-13 09:20:52,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:52,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 09:20:52,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216803348] [2020-10-13 09:20:52,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 09:20:52,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:52,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 09:20:52,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:20:52,884 INFO L87 Difference]: Start difference. First operand 3440 states and 4005 transitions. Second operand 10 states. [2020-10-13 09:20:54,629 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2020-10-13 09:20:54,806 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-13 09:20:55,222 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-10-13 09:20:57,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:20:57,198 INFO L93 Difference]: Finished difference Result 7169 states and 8381 transitions. [2020-10-13 09:20:57,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 09:20:57,199 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 535 [2020-10-13 09:20:57,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:20:57,214 INFO L225 Difference]: With dead ends: 7169 [2020-10-13 09:20:57,214 INFO L226 Difference]: Without dead ends: 3644 [2020-10-13 09:20:57,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2020-10-13 09:20:57,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3644 states. [2020-10-13 09:20:57,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3644 to 3452. [2020-10-13 09:20:57,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3452 states. [2020-10-13 09:20:57,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3452 states to 3452 states and 3951 transitions. [2020-10-13 09:20:57,295 INFO L78 Accepts]: Start accepts. Automaton has 3452 states and 3951 transitions. Word has length 535 [2020-10-13 09:20:57,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:20:57,296 INFO L479 AbstractCegarLoop]: Abstraction has 3452 states and 3951 transitions. [2020-10-13 09:20:57,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 09:20:57,296 INFO L276 IsEmpty]: Start isEmpty. Operand 3452 states and 3951 transitions. [2020-10-13 09:20:57,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2020-10-13 09:20:57,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:57,313 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:20:57,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:20:57,314 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:57,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:57,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1248062257, now seen corresponding path program 1 times [2020-10-13 09:20:57,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:57,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843196821] [2020-10-13 09:20:57,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:57,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:57,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:57,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:58,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:02,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:02,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 631 [2020-10-13 09:21:02,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:21:02,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 09:21:02,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:02,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:21:02,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:21:02,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-13 09:21:02,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:02,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:21:02,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:02,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:02,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:02,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:21:02,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:02,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:21:02,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:02,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:21:02,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:02,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:21:02,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:02,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:21:02,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:02,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:02,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:02,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 09:21:02,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:02,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 09:21:02,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:02,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:02,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:21:02,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 09:21:02,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:02,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 09:21:02,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:02,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:02,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:02,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:21:02,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:02,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 09:21:02,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:02,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:02,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-13 09:21:02,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:02,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:02,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-13 09:21:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:02,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:02,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:02,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:21:02,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:02,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:21:02,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:02,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:02,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:21:02,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:02,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:02,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-13 09:21:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:02,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:02,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:02,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:21:02,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:02,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 09:21:02,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:02,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:02,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-13 09:21:02,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:02,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:02,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2020-10-13 09:21:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:02,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:02,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:02,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:21:02,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:02,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 09:21:02,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:02,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:02,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 09:21:02,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:02,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:03,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 225 proven. 380 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2020-10-13 09:21:03,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843196821] [2020-10-13 09:21:03,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:21:03,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:21:03,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797779337] [2020-10-13 09:21:03,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:21:03,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:21:03,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:21:03,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:21:03,016 INFO L87 Difference]: Start difference. First operand 3452 states and 3951 transitions. Second operand 7 states. [2020-10-13 09:21:05,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:21:05,738 INFO L93 Difference]: Finished difference Result 7285 states and 8366 transitions. [2020-10-13 09:21:05,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:21:05,739 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 613 [2020-10-13 09:21:05,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:21:05,760 INFO L225 Difference]: With dead ends: 7285 [2020-10-13 09:21:05,760 INFO L226 Difference]: Without dead ends: 3839 [2020-10-13 09:21:05,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:21:05,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3839 states. [2020-10-13 09:21:05,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3839 to 3808. [2020-10-13 09:21:05,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3808 states. [2020-10-13 09:21:05,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3808 states to 3808 states and 4340 transitions. [2020-10-13 09:21:05,851 INFO L78 Accepts]: Start accepts. Automaton has 3808 states and 4340 transitions. Word has length 613 [2020-10-13 09:21:05,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:21:05,852 INFO L479 AbstractCegarLoop]: Abstraction has 3808 states and 4340 transitions. [2020-10-13 09:21:05,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:21:05,852 INFO L276 IsEmpty]: Start isEmpty. Operand 3808 states and 4340 transitions. [2020-10-13 09:21:05,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 676 [2020-10-13 09:21:05,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:21:05,864 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:21:05,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:21:05,865 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:21:05,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:21:05,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1822912107, now seen corresponding path program 1 times [2020-10-13 09:21:05,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:21:05,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778711933] [2020-10-13 09:21:05,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:21:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:05,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:06,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:06,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:10,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:10,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 693 [2020-10-13 09:21:10,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:21:10,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 09:21:10,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:10,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:10,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 420 [2020-10-13 09:21:10,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 09:21:10,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:11,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:21:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:11,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:11,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:11,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:21:11,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:11,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:21:11,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:11,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:11,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:11,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:11,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:11,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:21:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:11,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:11,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:11,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:21:11,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:11,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 09:21:11,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:11,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:11,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:11,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:11,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:11,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-13 09:21:11,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:11,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:11,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:11,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:21:11,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:11,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 09:21:11,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:11,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:11,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:11,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:11,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:11,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-13 09:21:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:11,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:11,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:11,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:21:11,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:11,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 09:21:11,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:11,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:21:11,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:11,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 09:21:11,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:11,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2020-10-13 09:21:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:11,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:11,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:11,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:21:11,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:11,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 09:21:11,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:11,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:11,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:21:11,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:21:11,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:11,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2020-10-13 09:21:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:11,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:11,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:11,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:21:11,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:11,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 09:21:11,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:11,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:11,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 09:21:11,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:11,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:11,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1342 backedges. 568 proven. 106 refuted. 0 times theorem prover too weak. 668 trivial. 0 not checked. [2020-10-13 09:21:11,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778711933] [2020-10-13 09:21:11,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:21:11,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:21:11,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99644986] [2020-10-13 09:21:11,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:21:11,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:21:11,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:21:11,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:21:11,838 INFO L87 Difference]: Start difference. First operand 3808 states and 4340 transitions. Second operand 8 states. [2020-10-13 09:21:15,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:21:15,365 INFO L93 Difference]: Finished difference Result 9018 states and 10524 transitions. [2020-10-13 09:21:15,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:21:15,365 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 675 [2020-10-13 09:21:15,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:21:15,381 INFO L225 Difference]: With dead ends: 9018 [2020-10-13 09:21:15,381 INFO L226 Difference]: Without dead ends: 5553 [2020-10-13 09:21:15,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-13 09:21:15,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5553 states. [2020-10-13 09:21:15,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5553 to 5523. [2020-10-13 09:21:15,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5523 states. [2020-10-13 09:21:15,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5523 states to 5523 states and 6364 transitions. [2020-10-13 09:21:15,483 INFO L78 Accepts]: Start accepts. Automaton has 5523 states and 6364 transitions. Word has length 675 [2020-10-13 09:21:15,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:21:15,484 INFO L479 AbstractCegarLoop]: Abstraction has 5523 states and 6364 transitions. [2020-10-13 09:21:15,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:21:15,484 INFO L276 IsEmpty]: Start isEmpty. Operand 5523 states and 6364 transitions. [2020-10-13 09:21:15,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 887 [2020-10-13 09:21:15,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:21:15,510 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:21:15,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:21:15,510 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:21:15,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:21:15,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1112917434, now seen corresponding path program 1 times [2020-10-13 09:21:15,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:21:15,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588735760] [2020-10-13 09:21:15,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:21:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:15,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:15,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:16,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:17,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:18,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:20,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:20,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 908 [2020-10-13 09:21:20,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:21:20,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 09:21:20,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:20,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:20,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 303 [2020-10-13 09:21:20,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 09:21:20,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:20,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:21:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:20,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:20,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:20,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:21:20,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:20,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:21:20,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:20,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:20,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:20,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:20,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:20,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:21:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:20,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:20,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:20,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:21:20,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:20,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 09:21:20,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:20,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:20,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:20,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:20,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:20,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-13 09:21:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:20,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:20,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:20,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:21:20,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:20,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 09:21:20,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:20,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:21:20,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:20,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 09:21:20,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:20,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-13 09:21:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:20,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:20,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:20,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:21:20,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:20,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:21:20,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:20,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:20,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:21:20,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:21:20,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:21,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2020-10-13 09:21:21,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:21,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:21,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:21,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:21:21,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:21,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 09:21:21,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:21,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:21,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:21:21,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:21,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:21,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2020-10-13 09:21:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:21,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:21,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:21,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 09:21:21,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:21,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 09:21:21,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:21,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:21,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-13 09:21:21,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:21,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:21,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 625 [2020-10-13 09:21:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:21,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:21,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:21,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:21:21,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:21,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 09:21:21,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:21,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:21,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-13 09:21:21,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:21,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:21,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 735 [2020-10-13 09:21:21,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:21,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:21,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:21,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:21:21,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:21,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 09:21:21,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:21,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:21,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 09:21:21,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:21,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:21,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2449 backedges. 484 proven. 266 refuted. 0 times theorem prover too weak. 1699 trivial. 0 not checked. [2020-10-13 09:21:21,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588735760] [2020-10-13 09:21:21,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:21:21,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:21:21,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021059336] [2020-10-13 09:21:21,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:21:21,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:21:21,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:21:21,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:21:21,638 INFO L87 Difference]: Start difference. First operand 5523 states and 6364 transitions. Second operand 7 states. [2020-10-13 09:21:25,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:21:25,409 INFO L93 Difference]: Finished difference Result 12532 states and 15086 transitions. [2020-10-13 09:21:25,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:21:25,410 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 886 [2020-10-13 09:21:25,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:21:25,432 INFO L225 Difference]: With dead ends: 12532 [2020-10-13 09:21:25,433 INFO L226 Difference]: Without dead ends: 7352 [2020-10-13 09:21:25,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:21:25,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7352 states. [2020-10-13 09:21:25,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7352 to 7223. [2020-10-13 09:21:25,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7223 states. [2020-10-13 09:21:25,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7223 states to 7223 states and 8161 transitions. [2020-10-13 09:21:25,597 INFO L78 Accepts]: Start accepts. Automaton has 7223 states and 8161 transitions. Word has length 886 [2020-10-13 09:21:25,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:21:25,598 INFO L479 AbstractCegarLoop]: Abstraction has 7223 states and 8161 transitions. [2020-10-13 09:21:25,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:21:25,598 INFO L276 IsEmpty]: Start isEmpty. Operand 7223 states and 8161 transitions. [2020-10-13 09:21:25,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 898 [2020-10-13 09:21:25,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:21:25,616 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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, 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] [2020-10-13 09:21:25,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:21:25,617 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:21:25,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:21:25,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1675218532, now seen corresponding path program 1 times [2020-10-13 09:21:25,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:21:25,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120243611] [2020-10-13 09:21:25,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:21:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:25,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:25,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:26,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:30,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:30,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 917 [2020-10-13 09:21:30,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:21:30,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 09:21:30,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:30,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:30,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 644 [2020-10-13 09:21:30,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 09:21:30,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:30,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:21:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:30,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:30,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:30,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:21:30,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:30,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:21:30,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:30,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:30,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:30,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:30,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:30,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:21:30,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:30,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:30,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:30,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:21:30,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:30,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:21:30,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:30,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:30,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:30,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:30,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:30,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-13 09:21:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:30,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:30,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:30,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:21:30,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:30,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 09:21:30,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:30,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:30,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:30,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:30,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:30,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-13 09:21:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:30,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:31,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:31,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:21:31,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:31,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:21:31,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:31,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:31,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:31,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:31,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:31,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2020-10-13 09:21:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:31,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:31,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:31,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 09:21:31,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:31,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-13 09:21:31,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:31,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:21:31,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:31,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-13 09:21:31,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:31,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 636 [2020-10-13 09:21:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:31,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:31,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:31,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:21:31,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:31,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 09:21:31,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:31,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:31,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:21:31,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:21:31,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:31,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 746 [2020-10-13 09:21:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:31,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:31,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:31,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:21:31,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:31,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 09:21:31,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:31,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:31,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 09:21:31,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:31,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:31,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2078 backedges. 729 proven. 106 refuted. 0 times theorem prover too weak. 1243 trivial. 0 not checked. [2020-10-13 09:21:31,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120243611] [2020-10-13 09:21:31,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:21:31,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:21:31,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562799534] [2020-10-13 09:21:31,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:21:31,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:21:31,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:21:31,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:21:31,923 INFO L87 Difference]: Start difference. First operand 7223 states and 8161 transitions. Second operand 7 states. [2020-10-13 09:21:36,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:21:36,032 INFO L93 Difference]: Finished difference Result 16630 states and 19618 transitions. [2020-10-13 09:21:36,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:21:36,032 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 897 [2020-10-13 09:21:36,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:21:36,073 INFO L225 Difference]: With dead ends: 16630 [2020-10-13 09:21:36,073 INFO L226 Difference]: Without dead ends: 9750 [2020-10-13 09:21:36,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:21:36,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9750 states. [2020-10-13 09:21:36,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9750 to 9628. [2020-10-13 09:21:36,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9628 states. [2020-10-13 09:21:36,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9628 states to 9628 states and 10832 transitions. [2020-10-13 09:21:36,292 INFO L78 Accepts]: Start accepts. Automaton has 9628 states and 10832 transitions. Word has length 897 [2020-10-13 09:21:36,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:21:36,294 INFO L479 AbstractCegarLoop]: Abstraction has 9628 states and 10832 transitions. [2020-10-13 09:21:36,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:21:36,294 INFO L276 IsEmpty]: Start isEmpty. Operand 9628 states and 10832 transitions. [2020-10-13 09:21:36,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 987 [2020-10-13 09:21:36,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:21:36,320 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:21:36,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:21:36,321 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:21:36,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:21:36,321 INFO L82 PathProgramCache]: Analyzing trace with hash 190462620, now seen corresponding path program 1 times [2020-10-13 09:21:36,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:21:36,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754578551] [2020-10-13 09:21:36,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:21:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:36,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:36,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:39,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:40,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:41,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:41,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:41,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1004 [2020-10-13 09:21:41,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:21:41,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 09:21:41,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:41,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:41,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 952 [2020-10-13 09:21:41,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 09:21:41,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:41,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:21:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:41,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:41,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:41,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:21:41,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:41,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:21:41,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:41,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:41,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:41,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:41,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:41,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:21:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:41,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:41,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:41,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:21:41,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:41,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:21:41,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:41,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:41,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:41,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:41,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:41,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-13 09:21:41,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:41,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:41,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:41,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:21:41,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:41,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 09:21:41,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:41,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:41,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:41,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:41,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:41,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-13 09:21:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:41,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:41,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:41,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:21:41,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:41,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 09:21:41,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:41,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:41,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:41,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:41,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:41,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2020-10-13 09:21:41,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:41,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:41,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:41,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:21:41,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:41,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 09:21:41,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:41,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:41,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:41,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:41,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:42,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 767 [2020-10-13 09:21:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:42,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:42,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:42,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 09:21:42,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:42,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 09:21:42,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:42,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:21:42,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:42,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-13 09:21:42,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:42,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1772 backedges. 232 proven. 5 refuted. 0 times theorem prover too weak. 1535 trivial. 0 not checked. [2020-10-13 09:21:42,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754578551] [2020-10-13 09:21:42,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:21:42,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:21:42,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735137322] [2020-10-13 09:21:42,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:21:42,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:21:42,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:21:42,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:21:42,475 INFO L87 Difference]: Start difference. First operand 9628 states and 10832 transitions. Second operand 5 states. [2020-10-13 09:21:44,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:21:44,454 INFO L93 Difference]: Finished difference Result 18934 states and 21410 transitions. [2020-10-13 09:21:44,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:21:44,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 986 [2020-10-13 09:21:44,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:21:44,479 INFO L225 Difference]: With dead ends: 18934 [2020-10-13 09:21:44,479 INFO L226 Difference]: Without dead ends: 9636 [2020-10-13 09:21:44,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 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 09:21:44,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9636 states. [2020-10-13 09:21:44,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9636 to 9628. [2020-10-13 09:21:44,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9628 states. [2020-10-13 09:21:44,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9628 states to 9628 states and 10826 transitions. [2020-10-13 09:21:44,749 INFO L78 Accepts]: Start accepts. Automaton has 9628 states and 10826 transitions. Word has length 986 [2020-10-13 09:21:44,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:21:44,750 INFO L479 AbstractCegarLoop]: Abstraction has 9628 states and 10826 transitions. [2020-10-13 09:21:44,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:21:44,750 INFO L276 IsEmpty]: Start isEmpty. Operand 9628 states and 10826 transitions. [2020-10-13 09:21:44,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1030 [2020-10-13 09:21:44,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:21:44,777 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:21:44,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:21:44,778 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:21:44,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:21:44,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1997063685, now seen corresponding path program 1 times [2020-10-13 09:21:44,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:21:44,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630330154] [2020-10-13 09:21:44,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:21:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:44,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:45,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:48,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:49,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:49,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:49,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1047 [2020-10-13 09:21:49,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:21:49,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 09:21:49,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:49,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:49,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 995 [2020-10-13 09:21:49,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 09:21:49,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:50,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:21:50,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:50,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:50,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:50,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:21:50,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:50,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:21:50,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:50,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:50,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:50,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:50,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:50,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:21:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:50,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:50,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:50,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:21:50,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:50,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 09:21:50,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:50,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:50,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:50,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:50,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:50,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-13 09:21:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:50,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:50,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:50,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:21:50,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:50,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 09:21:50,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:50,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:50,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:50,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:50,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:50,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-13 09:21:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:50,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:50,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:50,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:21:50,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:50,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 09:21:50,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:50,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:50,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:50,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:50,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:50,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2020-10-13 09:21:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:50,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:50,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:50,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:21:50,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:50,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 09:21:50,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:50,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:50,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:50,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:50,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:50,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 767 [2020-10-13 09:21:50,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:50,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:50,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:50,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-13 09:21:50,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:50,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 09:21:50,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:50,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:21:50,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:50,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-13 09:21:50,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:50,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1835 backedges. 232 proven. 5 refuted. 0 times theorem prover too weak. 1598 trivial. 0 not checked. [2020-10-13 09:21:50,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630330154] [2020-10-13 09:21:50,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:21:50,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:21:50,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228492619] [2020-10-13 09:21:50,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:21:50,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:21:50,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:21:50,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:21:50,998 INFO L87 Difference]: Start difference. First operand 9628 states and 10826 transitions. Second operand 5 states. [2020-10-13 09:21:54,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:21:54,103 INFO L93 Difference]: Finished difference Result 21297 states and 24186 transitions. [2020-10-13 09:21:54,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:21:54,104 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1029 [2020-10-13 09:21:54,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:21:54,131 INFO L225 Difference]: With dead ends: 21297 [2020-10-13 09:21:54,131 INFO L226 Difference]: Without dead ends: 12012 [2020-10-13 09:21:54,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 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 09:21:54,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12012 states. [2020-10-13 09:21:54,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12012 to 12004. [2020-10-13 09:21:54,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12004 states. [2020-10-13 09:21:54,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12004 states to 12004 states and 13407 transitions. [2020-10-13 09:21:54,317 INFO L78 Accepts]: Start accepts. Automaton has 12004 states and 13407 transitions. Word has length 1029 [2020-10-13 09:21:54,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:21:54,318 INFO L479 AbstractCegarLoop]: Abstraction has 12004 states and 13407 transitions. [2020-10-13 09:21:54,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:21:54,319 INFO L276 IsEmpty]: Start isEmpty. Operand 12004 states and 13407 transitions. [2020-10-13 09:21:54,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1107 [2020-10-13 09:21:54,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:21:54,351 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:21:54,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:21:54,352 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:21:54,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:21:54,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1265835092, now seen corresponding path program 1 times [2020-10-13 09:21:54,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:21:54,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588912342] [2020-10-13 09:21:54,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:21:54,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:54,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:54,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:57,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:58,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:59,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:59,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:59,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1126 [2020-10-13 09:21:59,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:21:59,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5218 [2020-10-13 09:21:59,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:59,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:59,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1071 [2020-10-13 09:21:59,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 09:21:59,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:59,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:21:59,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:59,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:59,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:59,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:21:59,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:59,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:21:59,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:59,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:59,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:59,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:59,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:59,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:21:59,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:59,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:59,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:59,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:21:59,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:59,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:21:59,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:59,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:59,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:59,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:59,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:59,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-13 09:21:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:59,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:59,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:59,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:21:59,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:59,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 09:21:59,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:59,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:59,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:59,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:59,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:59,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-13 09:21:59,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:59,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:59,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:59,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:21:59,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:59,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:21:59,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:59,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:59,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:59,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:59,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:00,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2020-10-13 09:22:00,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:00,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:00,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:00,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:22:00,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:00,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 09:22:00,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:00,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:00,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:00,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:00,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:00,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 767 [2020-10-13 09:22:00,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:00,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:00,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:00,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-13 09:22:00,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:00,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-13 09:22:00,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:00,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:22:00,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:00,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 289 [2020-10-13 09:22:00,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:00,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:22:00,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:00,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:00,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:00,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 09:22:00,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:00,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:22:00,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:00,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:22:00,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:00,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 09:22:00,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:00,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 232 proven. 5 refuted. 0 times theorem prover too weak. 1653 trivial. 0 not checked. [2020-10-13 09:22:00,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588912342] [2020-10-13 09:22:00,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:22:00,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:22:00,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446343477] [2020-10-13 09:22:00,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:22:00,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:22:00,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:22:00,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:22:00,888 INFO L87 Difference]: Start difference. First operand 12004 states and 13407 transitions. Second operand 5 states. [2020-10-13 09:22:03,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:22:03,560 INFO L93 Difference]: Finished difference Result 25371 states and 28717 transitions. [2020-10-13 09:22:03,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:22:03,561 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1106 [2020-10-13 09:22:03,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:22:03,591 INFO L225 Difference]: With dead ends: 25371 [2020-10-13 09:22:03,592 INFO L226 Difference]: Without dead ends: 13710 [2020-10-13 09:22:03,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 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 09:22:03,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13710 states. [2020-10-13 09:22:03,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13710 to 13700. [2020-10-13 09:22:03,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13700 states. [2020-10-13 09:22:03,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13700 states to 13700 states and 15439 transitions. [2020-10-13 09:22:03,810 INFO L78 Accepts]: Start accepts. Automaton has 13700 states and 15439 transitions. Word has length 1106 [2020-10-13 09:22:03,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:22:03,811 INFO L479 AbstractCegarLoop]: Abstraction has 13700 states and 15439 transitions. [2020-10-13 09:22:03,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:22:03,811 INFO L276 IsEmpty]: Start isEmpty. Operand 13700 states and 15439 transitions. [2020-10-13 09:22:03,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1237 [2020-10-13 09:22:03,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:22:03,867 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:22:03,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:22:03,867 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:22:03,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:22:03,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1152868147, now seen corresponding path program 1 times [2020-10-13 09:22:03,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:22:03,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737395101] [2020-10-13 09:22:03,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:22:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:04,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:04,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:04,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:09,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:09,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1256 [2020-10-13 09:22:09,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:22:09,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 09:22:09,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:09,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:22:09,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:22:09,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-13 09:22:09,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:09,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:22:09,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:09,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:09,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:09,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:22:09,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:09,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:22:09,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:09,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:22:09,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:09,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:22:09,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:09,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:22:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:09,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:09,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:09,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:22:09,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:09,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-13 09:22:09,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:09,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:22:09,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:22:09,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 09:22:09,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:09,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-13 09:22:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:09,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:09,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:09,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:22:09,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:09,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 09:22:09,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:09,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:09,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-13 09:22:09,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:09,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:09,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-13 09:22:09,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:09,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:09,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:09,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:22:09,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:09,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 09:22:09,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:09,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:09,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-13 09:22:09,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:09,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:09,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2020-10-13 09:22:09,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:09,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:09,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:09,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:22:09,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:09,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 09:22:09,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:09,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:09,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:22:09,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:09,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:09,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 767 [2020-10-13 09:22:09,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:09,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:09,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:09,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-13 09:22:09,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:09,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 09:22:09,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:09,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:09,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-10-13 09:22:09,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:09,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:09,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1019 [2020-10-13 09:22:09,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:09,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:09,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:09,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 09:22:09,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:09,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 09:22:09,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:09,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:09,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 171 [2020-10-13 09:22:09,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:09,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:10,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2724 backedges. 270 proven. 752 refuted. 0 times theorem prover too weak. 1702 trivial. 0 not checked. [2020-10-13 09:22:10,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737395101] [2020-10-13 09:22:10,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:22:10,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:22:10,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133463046] [2020-10-13 09:22:10,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:22:10,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:22:10,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:22:10,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:22:10,582 INFO L87 Difference]: Start difference. First operand 13700 states and 15439 transitions. Second operand 7 states. [2020-10-13 09:22:13,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:22:13,642 INFO L93 Difference]: Finished difference Result 31462 states and 35458 transitions. [2020-10-13 09:22:13,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:22:13,647 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1236 [2020-10-13 09:22:13,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:22:13,682 INFO L225 Difference]: With dead ends: 31462 [2020-10-13 09:22:13,682 INFO L226 Difference]: Without dead ends: 18105 [2020-10-13 09:22:13,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:22:13,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18105 states. [2020-10-13 09:22:13,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18105 to 18099. [2020-10-13 09:22:13,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18099 states. [2020-10-13 09:22:13,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18099 states to 18099 states and 20064 transitions. [2020-10-13 09:22:13,923 INFO L78 Accepts]: Start accepts. Automaton has 18099 states and 20064 transitions. Word has length 1236 [2020-10-13 09:22:13,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:22:13,923 INFO L479 AbstractCegarLoop]: Abstraction has 18099 states and 20064 transitions. [2020-10-13 09:22:13,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:22:13,924 INFO L276 IsEmpty]: Start isEmpty. Operand 18099 states and 20064 transitions. [2020-10-13 09:22:13,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1442 [2020-10-13 09:22:13,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:22:13,962 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-13 09:22:13,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 09:22:13,963 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:22:13,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:22:13,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1480280230, now seen corresponding path program 1 times [2020-10-13 09:22:13,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:22:13,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144922610] [2020-10-13 09:22:13,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:22:14,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:14,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:14,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:14,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:15,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:19,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:19,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1461 [2020-10-13 09:22:19,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:22:19,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-13 09:22:19,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:19,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:22:19,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-13 09:22:19,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-13 09:22:19,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:19,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:22:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:19,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:19,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:19,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:22:19,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:19,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:22:19,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:19,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:19,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:19,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:19,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:19,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:22:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:19,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:19,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:19,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 09:22:19,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:19,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-13 09:22:19,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:19,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:22:19,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:19,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-13 09:22:19,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:19,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 09:22:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:19,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:19,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:19,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:22:19,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:19,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-13 09:22:19,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:19,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:22:19,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:22:19,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-13 09:22:19,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:19,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-13 09:22:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:19,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:19,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:19,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:22:19,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:19,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 09:22:19,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:19,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:19,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-13 09:22:19,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:19,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:20,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-10-13 09:22:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:20,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:20,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:20,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:22:20,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:20,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 09:22:20,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:20,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:20,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:22:20,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:20,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:20,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 972 [2020-10-13 09:22:20,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:20,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:20,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:20,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-13 09:22:20,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:20,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 09:22:20,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:20,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:20,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-10-13 09:22:20,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:20,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:20,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1224 [2020-10-13 09:22:20,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:20,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:20,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:20,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 09:22:20,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:20,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 09:22:20,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:20,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:20,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 171 [2020-10-13 09:22:20,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:20,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:21,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3406 backedges. 530 proven. 856 refuted. 0 times theorem prover too weak. 2020 trivial. 0 not checked. [2020-10-13 09:22:21,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144922610] [2020-10-13 09:22:21,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:22:21,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:22:21,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60188629] [2020-10-13 09:22:21,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:22:21,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:22:21,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:22:21,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:22:21,587 INFO L87 Difference]: Start difference. First operand 18099 states and 20064 transitions. Second operand 7 states. [2020-10-13 09:22:24,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:22:24,545 INFO L93 Difference]: Finished difference Result 35526 states and 39447 transitions. [2020-10-13 09:22:24,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:22:24,546 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1441 [2020-10-13 09:22:24,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:22:24,578 INFO L225 Difference]: With dead ends: 35526 [2020-10-13 09:22:24,578 INFO L226 Difference]: Without dead ends: 18109 [2020-10-13 09:22:24,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:22:24,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18109 states. [2020-10-13 09:22:24,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18109 to 18099. [2020-10-13 09:22:24,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18099 states. [2020-10-13 09:22:24,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18099 states to 18099 states and 20062 transitions. [2020-10-13 09:22:24,954 INFO L78 Accepts]: Start accepts. Automaton has 18099 states and 20062 transitions. Word has length 1441 [2020-10-13 09:22:24,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:22:24,955 INFO L479 AbstractCegarLoop]: Abstraction has 18099 states and 20062 transitions. [2020-10-13 09:22:24,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:22:24,955 INFO L276 IsEmpty]: Start isEmpty. Operand 18099 states and 20062 transitions. [2020-10-13 09:22:24,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1476 [2020-10-13 09:22:24,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:22:24,991 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:22:24,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 09:22:24,992 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:22:24,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:22:24,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1110957869, now seen corresponding path program 1 times [2020-10-13 09:22:24,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:22:24,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666989405] [2020-10-13 09:22:24,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:22:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:25,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:25,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:25,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:30,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:30,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1497 [2020-10-13 09:22:30,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:22:30,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-13 09:22:30,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:30,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:22:30,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-13 09:22:30,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-13 09:22:30,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:30,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:22:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:30,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:30,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:30,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:22:30,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:30,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:22:30,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:30,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:30,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:30,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:30,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:30,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:22:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:30,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:30,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:30,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:22:30,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:30,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 09:22:30,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:30,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:22:30,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:30,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-13 09:22:30,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:30,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:22:30,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:30,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:30,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:30,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:22:30,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:30,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-13 09:22:30,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:30,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:22:30,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:22:30,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 09:22:30,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:30,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-13 09:22:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:30,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:30,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:30,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:22:30,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:30,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 09:22:30,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:30,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:30,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-13 09:22:30,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:30,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:30,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-13 09:22:30,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:30,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:30,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:30,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:22:30,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:30,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 09:22:30,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:30,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:30,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-13 09:22:30,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:30,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:30,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2020-10-13 09:22:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:30,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:31,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:31,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:22:31,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:31,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 09:22:31,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:31,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:31,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:22:31,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:31,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:31,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1006 [2020-10-13 09:22:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:31,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:31,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:31,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-13 09:22:31,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:31,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 09:22:31,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:31,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:31,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-10-13 09:22:31,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:31,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:31,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1258 [2020-10-13 09:22:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:31,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:31,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:31,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 09:22:31,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:31,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 09:22:31,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:31,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:31,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 171 [2020-10-13 09:22:31,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:31,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:32,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 494 proven. 764 refuted. 0 times theorem prover too weak. 2648 trivial. 0 not checked. [2020-10-13 09:22:32,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666989405] [2020-10-13 09:22:32,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:22:32,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:22:32,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606060353] [2020-10-13 09:22:32,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:22:32,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:22:32,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:22:32,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:22:32,653 INFO L87 Difference]: Start difference. First operand 18099 states and 20062 transitions. Second operand 7 states. [2020-10-13 09:22:36,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:22:36,468 INFO L93 Difference]: Finished difference Result 36880 states and 41051 transitions. [2020-10-13 09:22:36,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:22:36,469 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1475 [2020-10-13 09:22:36,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:22:36,495 INFO L225 Difference]: With dead ends: 36880 [2020-10-13 09:22:36,495 INFO L226 Difference]: Without dead ends: 19124 [2020-10-13 09:22:36,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:22:36,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19124 states. [2020-10-13 09:22:36,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19124 to 18779. [2020-10-13 09:22:36,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18779 states. [2020-10-13 09:22:36,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18779 states to 18779 states and 20739 transitions. [2020-10-13 09:22:36,752 INFO L78 Accepts]: Start accepts. Automaton has 18779 states and 20739 transitions. Word has length 1475 [2020-10-13 09:22:36,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:22:36,752 INFO L479 AbstractCegarLoop]: Abstraction has 18779 states and 20739 transitions. [2020-10-13 09:22:36,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:22:36,752 INFO L276 IsEmpty]: Start isEmpty. Operand 18779 states and 20739 transitions. [2020-10-13 09:22:36,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1594 [2020-10-13 09:22:36,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:22:36,784 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:22:36,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 09:22:36,784 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:22:36,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:22:36,785 INFO L82 PathProgramCache]: Analyzing trace with hash -297487531, now seen corresponding path program 1 times [2020-10-13 09:22:36,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:22:36,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778592538] [2020-10-13 09:22:36,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:22:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:37,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:37,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:37,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:41,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:42,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:42,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1617 [2020-10-13 09:22:42,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:22:42,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-13 09:22:42,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:42,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:22:42,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-13 09:22:42,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-13 09:22:42,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:42,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:22:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:42,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:42,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:42,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:22:42,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:42,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:22:42,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:42,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:42,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:42,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:42,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:42,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:22:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:42,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:42,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:42,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:22:42,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:42,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 09:22:42,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:42,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:42,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:42,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:42,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:42,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:22:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:42,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:42,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:42,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-13 09:22:42,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:42,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 09:22:42,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:42,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:22:42,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:42,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-13 09:22:42,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:42,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-13 09:22:42,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:42,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:42,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:42,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:22:42,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:42,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 09:22:42,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:42,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:22:42,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:22:42,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-13 09:22:42,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:42,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-13 09:22:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:42,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:42,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:42,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:22:42,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:42,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 09:22:42,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:42,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:42,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-13 09:22:42,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:42,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:42,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2020-10-13 09:22:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:42,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:42,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:42,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:22:42,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:42,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 09:22:42,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:42,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:42,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:22:42,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:42,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:42,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1069 [2020-10-13 09:22:42,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:42,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:43,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:43,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-13 09:22:43,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:43,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 09:22:43,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:43,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:43,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 307 [2020-10-13 09:22:43,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:43,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:43,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:22:43,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:43,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:43,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:43,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 09:22:43,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:43,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:22:43,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:43,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:43,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:43,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:43,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:43,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1376 [2020-10-13 09:22:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:43,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:43,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:43,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 09:22:43,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:43,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 09:22:43,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:43,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:43,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 171 [2020-10-13 09:22:43,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:43,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:44,483 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 604 proven. 506 refuted. 0 times theorem prover too weak. 3050 trivial. 0 not checked. [2020-10-13 09:22:44,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778592538] [2020-10-13 09:22:44,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:22:44,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:22:44,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657227728] [2020-10-13 09:22:44,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:22:44,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:22:44,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:22:44,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:22:44,485 INFO L87 Difference]: Start difference. First operand 18779 states and 20739 transitions. Second operand 7 states. [2020-10-13 09:22:48,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:22:48,449 INFO L93 Difference]: Finished difference Result 38902 states and 43215 transitions. [2020-10-13 09:22:48,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:22:48,450 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1593 [2020-10-13 09:22:48,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:22:48,480 INFO L225 Difference]: With dead ends: 38902 [2020-10-13 09:22:48,480 INFO L226 Difference]: Without dead ends: 20468 [2020-10-13 09:22:48,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:22:48,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20468 states. [2020-10-13 09:22:48,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20468 to 20129. [2020-10-13 09:22:48,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20129 states. [2020-10-13 09:22:48,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20129 states to 20129 states and 22015 transitions. [2020-10-13 09:22:48,725 INFO L78 Accepts]: Start accepts. Automaton has 20129 states and 22015 transitions. Word has length 1593 [2020-10-13 09:22:48,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:22:48,725 INFO L479 AbstractCegarLoop]: Abstraction has 20129 states and 22015 transitions. [2020-10-13 09:22:48,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:22:48,726 INFO L276 IsEmpty]: Start isEmpty. Operand 20129 states and 22015 transitions. [2020-10-13 09:22:48,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1804 [2020-10-13 09:22:48,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:22:48,768 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:22:48,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 09:22:48,768 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:22:48,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:22:48,769 INFO L82 PathProgramCache]: Analyzing trace with hash 458920071, now seen corresponding path program 1 times [2020-10-13 09:22:48,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:22:48,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941800499] [2020-10-13 09:22:48,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:22:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:49,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:49,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:49,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:54,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:54,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1831 [2020-10-13 09:22:54,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:22:54,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5153 [2020-10-13 09:22:54,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:54,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 09:22:54,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1126 [2020-10-13 09:22:54,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-13 09:22:54,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:54,528 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-10-13 09:22:54,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:22:54,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:54,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:54,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:54,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:22:54,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:54,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:22:54,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:54,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:54,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:54,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:54,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:54,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:22:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:54,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:54,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:54,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 09:22:54,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:54,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 09:22:54,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:54,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:54,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:54,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:54,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:54,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 09:22:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:54,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:54,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:54,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 09:22:54,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:54,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:22:54,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:54,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:54,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:54,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:54,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:54,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-13 09:22:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:54,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:54,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:54,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:22:54,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:54,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 09:22:54,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:54,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:54,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:54,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:54,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:54,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-13 09:22:54,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:54,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:54,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:54,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:22:54,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:54,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 09:22:54,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:54,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:54,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:54,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:54,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:55,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-13 09:22:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:55,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:55,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:55,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:22:55,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:55,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:22:55,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:55,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:55,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:55,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:55,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:55,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-13 09:22:55,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:55,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:55,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:55,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:22:55,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:55,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-13 09:22:55,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:55,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:22:55,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:55,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-13 09:22:55,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:55,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1114 [2020-10-13 09:22:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:55,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:55,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:56,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:58,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:58,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-13 09:22:58,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:22:58,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2981 [2020-10-13 09:22:58,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:58,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:22:58,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:22:58,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-13 09:22:58,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:58,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:22:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:58,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:58,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:58,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 09:22:58,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:58,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 09:22:58,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:58,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:22:58,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:58,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 09:22:58,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:59,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1421 [2020-10-13 09:22:59,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:59,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:59,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:59,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 09:22:59,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:59,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 09:22:59,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:59,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:59,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-13 09:22:59,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:59,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:59,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1586 [2020-10-13 09:22:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:59,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:59,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:59,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 09:22:59,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:59,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 09:22:59,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:59,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:59,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 171 [2020-10-13 09:22:59,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:59,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:02,191 INFO L134 CoverageAnalysis]: Checked inductivity of 5949 backedges. 1566 proven. 334 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2020-10-13 09:23:02,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941800499] [2020-10-13 09:23:02,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:23:02,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 09:23:02,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626852215] [2020-10-13 09:23:02,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 09:23:02,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:23:02,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 09:23:02,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:23:02,194 INFO L87 Difference]: Start difference. First operand 20129 states and 22015 transitions. Second operand 10 states. [2020-10-13 09:23:07,520 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2020-10-13 09:23:09,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:23:09,112 INFO L93 Difference]: Finished difference Result 39917 states and 43686 transitions. [2020-10-13 09:23:09,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 09:23:09,113 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1803 [2020-10-13 09:23:09,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:23:09,142 INFO L225 Difference]: With dead ends: 39917 [2020-10-13 09:23:09,142 INFO L226 Difference]: Without dead ends: 20133 [2020-10-13 09:23:09,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2020-10-13 09:23:09,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20133 states. [2020-10-13 09:23:09,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20133 to 20129. [2020-10-13 09:23:09,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20129 states. [2020-10-13 09:23:09,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20129 states to 20129 states and 21992 transitions. [2020-10-13 09:23:09,376 INFO L78 Accepts]: Start accepts. Automaton has 20129 states and 21992 transitions. Word has length 1803 [2020-10-13 09:23:09,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:23:09,376 INFO L479 AbstractCegarLoop]: Abstraction has 20129 states and 21992 transitions. [2020-10-13 09:23:09,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 09:23:09,377 INFO L276 IsEmpty]: Start isEmpty. Operand 20129 states and 21992 transitions. [2020-10-13 09:23:09,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1861 [2020-10-13 09:23:09,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:23:09,412 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:23:09,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 09:23:09,412 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:23:09,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:23:09,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1297853321, now seen corresponding path program 1 times [2020-10-13 09:23:09,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:23:09,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662780305] [2020-10-13 09:23:09,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:23:09,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:09,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:10,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:11,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:14,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:14,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1888 [2020-10-13 09:23:14,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:23:14,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-13 09:23:14,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:14,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:23:14,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1240 [2020-10-13 09:23:14,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-13 09:23:14,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:14,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:23:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:14,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:14,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:14,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:23:14,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:14,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 09:23:14,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:14,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:14,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:14,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:14,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:14,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:23:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:14,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:14,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:14,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 09:23:14,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:14,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 09:23:14,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:14,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:14,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:14,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:14,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:15,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 09:23:15,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:15,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:15,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:15,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 09:23:15,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:15,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 09:23:15,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:15,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:15,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:15,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:15,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:15,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-13 09:23:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:15,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:15,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:15,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:23:15,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:15,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:23:15,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:15,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:15,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:15,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:15,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:15,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-13 09:23:15,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:15,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:15,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:15,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:23:15,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:15,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 09:23:15,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:15,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:15,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:15,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:15,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:15,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-13 09:23:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:15,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:15,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:15,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:23:15,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:15,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:23:15,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:15,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:15,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:15,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:15,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:15,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-13 09:23:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:15,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:15,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:15,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:23:15,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:15,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 09:23:15,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:15,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:15,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:15,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:15,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:15,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1114 [2020-10-13 09:23:15,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:15,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:15,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:15,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 09:23:15,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:15,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 09:23:15,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:15,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:23:15,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:15,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 09:23:15,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:15,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1226 [2020-10-13 09:23:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:15,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:15,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:15,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-13 09:23:15,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:15,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-13 09:23:15,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:15,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:23:15,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:23:15,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-13 09:23:15,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:16,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1478 [2020-10-13 09:23:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:16,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:16,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:16,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 09:23:16,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:16,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 09:23:16,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:16,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:16,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-13 09:23:16,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:16,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:16,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1643 [2020-10-13 09:23:16,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:16,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:16,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:16,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 09:23:16,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:16,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 09:23:16,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:16,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:16,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 171 [2020-10-13 09:23:16,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:16,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:17,696 INFO L134 CoverageAnalysis]: Checked inductivity of 6969 backedges. 1712 proven. 334 refuted. 0 times theorem prover too weak. 4923 trivial. 0 not checked. [2020-10-13 09:23:17,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662780305] [2020-10-13 09:23:17,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:23:17,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:23:17,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115385449] [2020-10-13 09:23:17,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:23:17,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:23:17,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:23:17,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:23:17,699 INFO L87 Difference]: Start difference. First operand 20129 states and 21992 transitions. Second operand 7 states.