/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/Problem15_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:04:41,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:04:41,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:04:41,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:04:41,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:04:41,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:04:41,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:04:41,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:04:41,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:04:41,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:04:41,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:04:41,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:04:41,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:04:41,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:04:41,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:04:41,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:04:41,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:04:41,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:04:41,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:04:41,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:04:41,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:04:41,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:04:41,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:04:41,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:04:41,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:04:41,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:04:41,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:04:41,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:04:41,090 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:04:41,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:04:41,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:04:41,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:04:41,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:04:41,093 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:04:41,094 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:04:41,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:04:41,095 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:04:41,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:04:41,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:04:41,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:04:41,097 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:04:41,098 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 09:04:41,123 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:04:41,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:04:41,125 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:04:41,125 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:04:41,125 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:04:41,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:04:41,126 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:04:41,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:04:41,126 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:04:41,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:04:41,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:04:41,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:04:41,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:04:41,127 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:04:41,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:04:41,127 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:04:41,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:04:41,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:04:41,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:04:41,128 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:04:41,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:04:41,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:04:41,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:04:41,129 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:04:41,129 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:04:41,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:04:41,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:04:41,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:04:41,130 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:04:41,130 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 09:04:41,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:04:41,529 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:04:41,537 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:04:41,539 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:04:41,541 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:04:41,541 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label31.c [2020-10-13 09:04:41,625 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09b410ecd/d43dff29ffde4a42b5607bf24f518353/FLAG8f1941145 [2020-10-13 09:04:42,292 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:04:42,293 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label31.c [2020-10-13 09:04:42,314 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09b410ecd/d43dff29ffde4a42b5607bf24f518353/FLAG8f1941145 [2020-10-13 09:04:42,462 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09b410ecd/d43dff29ffde4a42b5607bf24f518353 [2020-10-13 09:04:42,471 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:04:42,473 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:04:42,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:04:42,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:04:42,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:04:42,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:04:42" (1/1) ... [2020-10-13 09:04:42,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@143143ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:42, skipping insertion in model container [2020-10-13 09:04:42,485 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:04:42" (1/1) ... [2020-10-13 09:04:42,494 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:04:42,597 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:04:43,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:04:43,774 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:04:44,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:04:44,201 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:04:44,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:44 WrapperNode [2020-10-13 09:04:44,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:04:44,204 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:04:44,205 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:04:44,205 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:04:44,223 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:44" (1/1) ... [2020-10-13 09:04:44,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:44" (1/1) ... [2020-10-13 09:04:44,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:44" (1/1) ... [2020-10-13 09:04:44,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:44" (1/1) ... [2020-10-13 09:04:44,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:44" (1/1) ... [2020-10-13 09:04:44,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:44" (1/1) ... [2020-10-13 09:04:44,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:44" (1/1) ... [2020-10-13 09:04:44,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:04:44,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:04:44,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:04:44,444 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:04:44,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:44" (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 09:04:44,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:04:44,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:04:44,551 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:04:44,551 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:04:44,552 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:04:44,552 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:04:44,552 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:04:44,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:04:44,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:04:44,553 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:04:44,553 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:04:44,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:04:44,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:04:51,069 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:04:51,069 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:04:51,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:04:51 BoogieIcfgContainer [2020-10-13 09:04:51,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:04:51,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:04:51,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:04:51,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:04:51,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:04:42" (1/3) ... [2020-10-13 09:04:51,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e0c051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:04:51, skipping insertion in model container [2020-10-13 09:04:51,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:44" (2/3) ... [2020-10-13 09:04:51,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e0c051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:04:51, skipping insertion in model container [2020-10-13 09:04:51,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:04:51" (3/3) ... [2020-10-13 09:04:51,098 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label31.c [2020-10-13 09:04:51,111 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:04:51,126 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:04:51,141 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:04:51,169 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:04:51,169 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:04:51,170 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:04:51,170 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:04:51,170 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:04:51,170 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:04:51,170 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:04:51,170 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:04:51,199 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-13 09:04:51,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 09:04:51,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:04:51,211 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:04:51,212 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:04:51,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:04:51,218 INFO L82 PathProgramCache]: Analyzing trace with hash 2120890949, now seen corresponding path program 1 times [2020-10-13 09:04:51,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:04:51,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601639046] [2020-10-13 09:04:51,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:04:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:51,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:51,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:51,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 09:04:51,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:51,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-10-13 09:04:51,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:51,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:04:51,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:04:51,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 09:04:51,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:04:52,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:04:52,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:52,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:52,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:52,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:04:52,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:52,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 09:04:52,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:52,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:04:52,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:52,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:04:52,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:52,175 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 09:04:52,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601639046] [2020-10-13 09:04:52,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:04:52,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:04:52,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567911983] [2020-10-13 09:04:52,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:04:52,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:04:52,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:04:52,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:04:52,209 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-13 09:04:58,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:04:58,771 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-13 09:04:58,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:04:58,774 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-10-13 09:04:58,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:04:58,803 INFO L225 Difference]: With dead ends: 1199 [2020-10-13 09:04:58,803 INFO L226 Difference]: Without dead ends: 697 [2020-10-13 09:04:58,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:04:58,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-13 09:04:58,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-13 09:04:58,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-13 09:04:58,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-13 09:04:58,929 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 71 [2020-10-13 09:04:58,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:04:58,930 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-13 09:04:58,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:04:58,930 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-13 09:04:58,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-13 09:04:58,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:04:58,938 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:04:58,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:04:58,939 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:04:58,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:04:58,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1052620642, now seen corresponding path program 1 times [2020-10-13 09:04:58,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:04:58,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850483235] [2020-10-13 09:04:58,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:04:58,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:59,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:59,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:59,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:02,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:02,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-13 09:05:02,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:05:02,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3696 [2020-10-13 09:05:02,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:02,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:05:02,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 09:05:02,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 09:05:02,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:05:03,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:05:03,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:03,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:03,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:03,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:05:03,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:03,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:05:03,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:03,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:03,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:03,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:03,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:03,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:05:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:03,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:03,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:03,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:05:03,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:03,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 09:05:03,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:03,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:05:03,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:03,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:05:03,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-13 09:05:03,277 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:05:03,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850483235] [2020-10-13 09:05:03,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:05:03,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:05:03,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202118231] [2020-10-13 09:05:03,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:05:03,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:05:03,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:05:03,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:05:03,283 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 8 states. [2020-10-13 09:05:10,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:05:10,082 INFO L93 Difference]: Finished difference Result 1507 states and 2170 transitions. [2020-10-13 09:05:10,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:05:10,089 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 140 [2020-10-13 09:05:10,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:05:10,102 INFO L225 Difference]: With dead ends: 1507 [2020-10-13 09:05:10,102 INFO L226 Difference]: Without dead ends: 695 [2020-10-13 09:05:10,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:05:10,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-10-13 09:05:10,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 691. [2020-10-13 09:05:10,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-13 09:05:10,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 929 transitions. [2020-10-13 09:05:10,161 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 929 transitions. Word has length 140 [2020-10-13 09:05:10,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:05:10,162 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 929 transitions. [2020-10-13 09:05:10,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:05:10,162 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 929 transitions. [2020-10-13 09:05:10,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-13 09:05:10,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:05:10,180 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:05:10,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:05:10,181 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:05:10,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:05:10,182 INFO L82 PathProgramCache]: Analyzing trace with hash 538255193, now seen corresponding path program 1 times [2020-10-13 09:05:10,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:05:10,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451957409] [2020-10-13 09:05:10,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:05:10,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:10,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:10,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:12,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:12,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-13 09:05:12,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:05:12,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1756 [2020-10-13 09:05:12,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:12,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:05:12,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 09:05:12,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:05:12,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:12,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:05:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:12,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:12,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:12,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:05:12,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:12,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:05:12,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:12,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:12,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:12,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:12,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:12,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:05:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:12,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:12,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:12,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:05:12,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:12,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-13 09:05:12,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:12,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:05:12,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:12,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:05:12,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:05:12,418 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:05:12,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451957409] [2020-10-13 09:05:12,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:05:12,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:05:12,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902832214] [2020-10-13 09:05:12,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:05:12,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:05:12,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:05:12,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:05:12,424 INFO L87 Difference]: Start difference. First operand 691 states and 929 transitions. Second operand 5 states. [2020-10-13 09:05:18,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:05:18,589 INFO L93 Difference]: Finished difference Result 1742 states and 2432 transitions. [2020-10-13 09:05:18,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:05:18,591 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-13 09:05:18,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:05:18,601 INFO L225 Difference]: With dead ends: 1742 [2020-10-13 09:05:18,602 INFO L226 Difference]: Without dead ends: 1057 [2020-10-13 09:05:18,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:05:18,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2020-10-13 09:05:18,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 1050. [2020-10-13 09:05:18,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1050 states. [2020-10-13 09:05:18,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1461 transitions. [2020-10-13 09:05:18,639 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1461 transitions. Word has length 151 [2020-10-13 09:05:18,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:05:18,641 INFO L479 AbstractCegarLoop]: Abstraction has 1050 states and 1461 transitions. [2020-10-13 09:05:18,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:05:18,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1461 transitions. [2020-10-13 09:05:18,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-13 09:05:18,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:05:18,645 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:05:18,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:05:18,645 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:05:18,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:05:18,646 INFO L82 PathProgramCache]: Analyzing trace with hash -210435940, now seen corresponding path program 1 times [2020-10-13 09:05:18,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:05:18,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600256966] [2020-10-13 09:05:18,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:05:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:18,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:18,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:19,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:20,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:20,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-13 09:05:20,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:05:20,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1741 [2020-10-13 09:05:20,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:20,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:05:20,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-13 09:05:20,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 09:05:20,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:05:20,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:05:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:20,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:20,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:20,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:05:20,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:20,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:05:20,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:20,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:20,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:20,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:20,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:05:20,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:05:20,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:20,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:20,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:20,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:05:20,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:20,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 09:05:20,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:20,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:05:20,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:20,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 09:05:20,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:21,031 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:05:21,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600256966] [2020-10-13 09:05:21,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:05:21,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:05:21,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120198707] [2020-10-13 09:05:21,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:05:21,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:05:21,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:05:21,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:05:21,037 INFO L87 Difference]: Start difference. First operand 1050 states and 1461 transitions. Second operand 8 states. [2020-10-13 09:05:30,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:05:30,441 INFO L93 Difference]: Finished difference Result 2191 states and 3029 transitions. [2020-10-13 09:05:30,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:05:30,443 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 162 [2020-10-13 09:05:30,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:05:30,452 INFO L225 Difference]: With dead ends: 2191 [2020-10-13 09:05:30,453 INFO L226 Difference]: Without dead ends: 1054 [2020-10-13 09:05:30,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:05:30,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2020-10-13 09:05:30,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 1050. [2020-10-13 09:05:30,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1050 states. [2020-10-13 09:05:30,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1441 transitions. [2020-10-13 09:05:30,500 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1441 transitions. Word has length 162 [2020-10-13 09:05:30,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:05:30,501 INFO L479 AbstractCegarLoop]: Abstraction has 1050 states and 1441 transitions. [2020-10-13 09:05:30,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:05:30,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1441 transitions. [2020-10-13 09:05:30,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-13 09:05:30,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:05:30,506 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:05:30,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:05:30,507 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:05:30,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:05:30,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1735279168, now seen corresponding path program 1 times [2020-10-13 09:05:30,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:05:30,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907543238] [2020-10-13 09:05:30,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:05:30,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:30,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:30,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:31,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:31,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:31,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-13 09:05:31,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:05:31,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1303 [2020-10-13 09:05:31,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:31,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:05:31,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-13 09:05:31,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 09:05:31,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:31,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:05:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:31,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:31,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:31,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:05:31,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:31,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:05:31,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:31,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:31,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:31,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:31,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:31,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:05:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:32,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:32,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:32,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 09:05:32,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:32,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-13 09:05:32,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:32,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:05:32,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:32,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 09:05:32,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:32,280 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:05:32,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907543238] [2020-10-13 09:05:32,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:05:32,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:05:32,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125179699] [2020-10-13 09:05:32,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:05:32,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:05:32,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:05:32,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:05:32,284 INFO L87 Difference]: Start difference. First operand 1050 states and 1441 transitions. Second operand 5 states. [2020-10-13 09:05:38,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:05:38,608 INFO L93 Difference]: Finished difference Result 2127 states and 2919 transitions. [2020-10-13 09:05:38,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:05:38,617 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-13 09:05:38,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:05:38,624 INFO L225 Difference]: With dead ends: 2127 [2020-10-13 09:05:38,625 INFO L226 Difference]: Without dead ends: 1054 [2020-10-13 09:05:38,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:05:38,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2020-10-13 09:05:38,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 1050. [2020-10-13 09:05:38,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1050 states. [2020-10-13 09:05:38,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1439 transitions. [2020-10-13 09:05:38,667 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1439 transitions. Word has length 167 [2020-10-13 09:05:38,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:05:38,667 INFO L479 AbstractCegarLoop]: Abstraction has 1050 states and 1439 transitions. [2020-10-13 09:05:38,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:05:38,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1439 transitions. [2020-10-13 09:05:38,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 09:05:38,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:05:38,671 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:05:38,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:05:38,671 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:05:38,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:05:38,672 INFO L82 PathProgramCache]: Analyzing trace with hash 94527059, now seen corresponding path program 1 times [2020-10-13 09:05:38,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:05:38,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275601084] [2020-10-13 09:05:38,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:05:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:38,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:39,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:39,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:39,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 09:05:39,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:05:39,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1239 [2020-10-13 09:05:39,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:39,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:05:39,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-13 09:05:39,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:05:39,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:40,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:05:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:40,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:40,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:40,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:05:40,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:40,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:05:40,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:40,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:40,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:40,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:40,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:40,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:05:40,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:40,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:40,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:40,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 09:05:40,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:40,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-13 09:05:40,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:40,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:05:40,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:40,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-13 09:05:40,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:40,303 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:05:40,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275601084] [2020-10-13 09:05:40,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:05:40,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:05:40,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746674045] [2020-10-13 09:05:40,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:05:40,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:05:40,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:05:40,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:05:40,307 INFO L87 Difference]: Start difference. First operand 1050 states and 1439 transitions. Second operand 5 states. [2020-10-13 09:05:46,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:05:46,993 INFO L93 Difference]: Finished difference Result 3051 states and 4218 transitions. [2020-10-13 09:05:46,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:05:46,994 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-13 09:05:46,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:05:47,004 INFO L225 Difference]: With dead ends: 3051 [2020-10-13 09:05:47,004 INFO L226 Difference]: Without dead ends: 2007 [2020-10-13 09:05:47,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:05:47,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2020-10-13 09:05:47,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 1995. [2020-10-13 09:05:47,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1995 states. [2020-10-13 09:05:47,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 2493 transitions. [2020-10-13 09:05:47,057 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 2493 transitions. Word has length 170 [2020-10-13 09:05:47,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:05:47,058 INFO L479 AbstractCegarLoop]: Abstraction has 1995 states and 2493 transitions. [2020-10-13 09:05:47,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:05:47,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 2493 transitions. [2020-10-13 09:05:47,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-13 09:05:47,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:05:47,061 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:05:47,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:05:47,062 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:05:47,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:05:47,062 INFO L82 PathProgramCache]: Analyzing trace with hash -596415108, now seen corresponding path program 1 times [2020-10-13 09:05:47,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:05:47,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595571800] [2020-10-13 09:05:47,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:05:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:47,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:47,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:47,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:48,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:48,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-13 09:05:48,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:05:48,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1250 [2020-10-13 09:05:48,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:48,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:05:48,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-13 09:05:48,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:05:48,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:48,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:05:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:48,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:48,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:48,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:05:48,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:48,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:05:48,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:48,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:48,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:48,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:48,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:48,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:05:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:48,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:48,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:48,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:05:48,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:48,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-13 09:05:48,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:48,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:05:48,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:48,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-13 09:05:48,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:48,679 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:05:48,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595571800] [2020-10-13 09:05:48,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:05:48,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:05:48,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848461067] [2020-10-13 09:05:48,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:05:48,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:05:48,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:05:48,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:05:48,683 INFO L87 Difference]: Start difference. First operand 1995 states and 2493 transitions. Second operand 5 states. [2020-10-13 09:05:57,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:05:57,300 INFO L93 Difference]: Finished difference Result 4931 states and 6344 transitions. [2020-10-13 09:05:57,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:05:57,303 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-10-13 09:05:57,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:05:57,318 INFO L225 Difference]: With dead ends: 4931 [2020-10-13 09:05:57,318 INFO L226 Difference]: Without dead ends: 2942 [2020-10-13 09:05:57,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 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 09:05:57,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-10-13 09:05:57,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 2934. [2020-10-13 09:05:57,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2934 states. [2020-10-13 09:05:57,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2934 states to 2934 states and 3552 transitions. [2020-10-13 09:05:57,396 INFO L78 Accepts]: Start accepts. Automaton has 2934 states and 3552 transitions. Word has length 181 [2020-10-13 09:05:57,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:05:57,397 INFO L479 AbstractCegarLoop]: Abstraction has 2934 states and 3552 transitions. [2020-10-13 09:05:57,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:05:57,397 INFO L276 IsEmpty]: Start isEmpty. Operand 2934 states and 3552 transitions. [2020-10-13 09:05:57,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-13 09:05:57,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:05:57,403 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:05:57,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:05:57,403 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:05:57,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:05:57,404 INFO L82 PathProgramCache]: Analyzing trace with hash 890041437, now seen corresponding path program 1 times [2020-10-13 09:05:57,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:05:57,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832430674] [2020-10-13 09:05:57,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:05:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:57,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:57,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:57,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:59,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:02,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:02,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-13 09:06:02,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:06:02,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4811 [2020-10-13 09:06:02,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:02,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:06:02,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-13 09:06:02,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 09:06:02,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:06:02,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:06:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:02,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:02,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:02,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:06:02,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:02,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:06:02,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:02,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:02,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:02,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:02,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:02,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:06:02,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:02,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:02,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:02,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:06:02,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:02,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:06:02,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:02,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:02,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:02,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:02,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:02,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 09:06:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:02,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:02,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:02,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:06:02,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:02,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 09:06:02,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:02,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:06:02,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:02,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 09:06:02,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:02,692 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-13 09:06:02,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832430674] [2020-10-13 09:06:02,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:06:02,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:06:02,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187512875] [2020-10-13 09:06:02,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:06:02,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:06:02,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:06:02,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:06:02,695 INFO L87 Difference]: Start difference. First operand 2934 states and 3552 transitions. Second operand 5 states. [2020-10-13 09:06:09,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:06:09,402 INFO L93 Difference]: Finished difference Result 5890 states and 7155 transitions. [2020-10-13 09:06:09,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:06:09,404 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-10-13 09:06:09,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:06:09,417 INFO L225 Difference]: With dead ends: 5890 [2020-10-13 09:06:09,417 INFO L226 Difference]: Without dead ends: 2942 [2020-10-13 09:06:09,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:06:09,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-10-13 09:06:09,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 2934. [2020-10-13 09:06:09,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2934 states. [2020-10-13 09:06:09,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2934 states to 2934 states and 3550 transitions. [2020-10-13 09:06:09,492 INFO L78 Accepts]: Start accepts. Automaton has 2934 states and 3550 transitions. Word has length 223 [2020-10-13 09:06:09,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:06:09,493 INFO L479 AbstractCegarLoop]: Abstraction has 2934 states and 3550 transitions. [2020-10-13 09:06:09,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:06:09,493 INFO L276 IsEmpty]: Start isEmpty. Operand 2934 states and 3550 transitions. [2020-10-13 09:06:09,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-13 09:06:09,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:06:09,499 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:06:09,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:06:09,500 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:06:09,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:06:09,500 INFO L82 PathProgramCache]: Analyzing trace with hash -513755035, now seen corresponding path program 1 times [2020-10-13 09:06:09,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:06:09,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042623659] [2020-10-13 09:06:09,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:06:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:09,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:09,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:09,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:10,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:14,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:14,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-13 09:06:14,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:06:14,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 09:06:14,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:14,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:06:14,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-13 09:06:14,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:06:14,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:14,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:06:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:14,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:14,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:14,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:06:14,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:14,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:06:14,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:14,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:14,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:14,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:14,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:14,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:06:14,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:14,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:14,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:14,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:06:14,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:14,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 09:06:14,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:14,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:14,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:14,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:14,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:14,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 09:06:14,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:14,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:14,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:14,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:06:14,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:14,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 09:06:14,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:14,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:06:14,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:14,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:06:14,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:14,954 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-13 09:06:14,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042623659] [2020-10-13 09:06:14,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:06:14,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:06:14,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478878506] [2020-10-13 09:06:14,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:06:14,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:06:14,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:06:14,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:06:14,966 INFO L87 Difference]: Start difference. First operand 2934 states and 3550 transitions. Second operand 5 states. [2020-10-13 09:06:21,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:06:21,360 INFO L93 Difference]: Finished difference Result 5886 states and 7147 transitions. [2020-10-13 09:06:21,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:06:21,363 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 227 [2020-10-13 09:06:21,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:06:21,375 INFO L225 Difference]: With dead ends: 5886 [2020-10-13 09:06:21,376 INFO L226 Difference]: Without dead ends: 2942 [2020-10-13 09:06:21,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:06:21,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-10-13 09:06:21,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 2934. [2020-10-13 09:06:21,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2934 states. [2020-10-13 09:06:21,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2934 states to 2934 states and 3548 transitions. [2020-10-13 09:06:21,456 INFO L78 Accepts]: Start accepts. Automaton has 2934 states and 3548 transitions. Word has length 227 [2020-10-13 09:06:21,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:06:21,457 INFO L479 AbstractCegarLoop]: Abstraction has 2934 states and 3548 transitions. [2020-10-13 09:06:21,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:06:21,457 INFO L276 IsEmpty]: Start isEmpty. Operand 2934 states and 3548 transitions. [2020-10-13 09:06:21,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-13 09:06:21,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:06:21,463 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:06:21,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:06:21,463 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:06:21,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:06:21,464 INFO L82 PathProgramCache]: Analyzing trace with hash -193449367, now seen corresponding path program 1 times [2020-10-13 09:06:21,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:06:21,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181783302] [2020-10-13 09:06:21,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:06:21,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:21,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:21,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:22,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:24,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:24,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-13 09:06:24,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:06:24,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2563 [2020-10-13 09:06:24,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:24,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:06:24,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-10-13 09:06:24,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 09:06:24,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:24,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:06:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:24,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:24,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:24,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:06:24,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:24,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:06:24,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:24,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:24,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:24,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:24,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:24,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:06:24,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:24,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:24,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:24,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:06:24,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:24,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 09:06:24,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:24,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:24,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:24,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:24,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:24,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 09:06:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:24,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:24,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:24,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 09:06:24,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:24,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 09:06:24,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:24,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:06:24,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:24,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 09:06:24,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:24,657 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-13 09:06:24,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181783302] [2020-10-13 09:06:24,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:06:24,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:06:24,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735304600] [2020-10-13 09:06:24,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:06:24,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:06:24,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:06:24,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:06:24,660 INFO L87 Difference]: Start difference. First operand 2934 states and 3548 transitions. Second operand 6 states. [2020-10-13 09:06:29,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:06:29,676 INFO L93 Difference]: Finished difference Result 5897 states and 7154 transitions. [2020-10-13 09:06:29,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:06:29,679 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 229 [2020-10-13 09:06:29,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:06:29,692 INFO L225 Difference]: With dead ends: 5897 [2020-10-13 09:06:29,692 INFO L226 Difference]: Without dead ends: 2942 [2020-10-13 09:06:29,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:06:29,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-10-13 09:06:29,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 2934. [2020-10-13 09:06:29,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2934 states. [2020-10-13 09:06:29,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2934 states to 2934 states and 3546 transitions. [2020-10-13 09:06:29,763 INFO L78 Accepts]: Start accepts. Automaton has 2934 states and 3546 transitions. Word has length 229 [2020-10-13 09:06:29,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:06:29,764 INFO L479 AbstractCegarLoop]: Abstraction has 2934 states and 3546 transitions. [2020-10-13 09:06:29,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:06:29,764 INFO L276 IsEmpty]: Start isEmpty. Operand 2934 states and 3546 transitions. [2020-10-13 09:06:29,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-13 09:06:29,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:06:29,770 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:29,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:06:29,771 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:06:29,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:06:29,771 INFO L82 PathProgramCache]: Analyzing trace with hash 444291365, now seen corresponding path program 1 times [2020-10-13 09:06:29,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:06:29,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343131764] [2020-10-13 09:06:29,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:06:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:29,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:29,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:30,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:31,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:31,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-13 09:06:31,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:06:31,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1941 [2020-10-13 09:06:31,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:31,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:06:31,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-13 09:06:31,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 09:06:31,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:31,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:06:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:31,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:31,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:31,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:06:31,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:31,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:06:31,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:31,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:31,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:31,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:31,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:31,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:06:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:32,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:32,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:32,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-13 09:06:32,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:32,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-13 09:06:32,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:32,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:06:32,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:32,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-13 09:06:32,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:32,306 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:06:32,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343131764] [2020-10-13 09:06:32,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:06:32,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:06:32,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477039634] [2020-10-13 09:06:32,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:06:32,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:06:32,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:06:32,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:06:32,310 INFO L87 Difference]: Start difference. First operand 2934 states and 3546 transitions. Second operand 5 states. [2020-10-13 09:06:39,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:06:39,203 INFO L93 Difference]: Finished difference Result 5898 states and 7151 transitions. [2020-10-13 09:06:39,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:06:39,204 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 241 [2020-10-13 09:06:39,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:06:39,213 INFO L225 Difference]: With dead ends: 5898 [2020-10-13 09:06:39,213 INFO L226 Difference]: Without dead ends: 2942 [2020-10-13 09:06:39,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:06:39,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-10-13 09:06:39,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 2934. [2020-10-13 09:06:39,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2934 states. [2020-10-13 09:06:39,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2934 states to 2934 states and 3540 transitions. [2020-10-13 09:06:39,278 INFO L78 Accepts]: Start accepts. Automaton has 2934 states and 3540 transitions. Word has length 241 [2020-10-13 09:06:39,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:06:39,278 INFO L479 AbstractCegarLoop]: Abstraction has 2934 states and 3540 transitions. [2020-10-13 09:06:39,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:06:39,279 INFO L276 IsEmpty]: Start isEmpty. Operand 2934 states and 3540 transitions. [2020-10-13 09:06:39,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-13 09:06:39,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:06:39,285 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:06:39,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:06:39,286 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:06:39,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:06:39,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1959916940, now seen corresponding path program 1 times [2020-10-13 09:06:39,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:06:39,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417690551] [2020-10-13 09:06:39,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:06:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:39,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:39,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:40,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:40,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:41,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:42,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:42,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-13 09:06:42,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:06:42,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2712 [2020-10-13 09:06:42,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:42,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:06:42,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-13 09:06:42,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 09:06:42,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:42,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:06:42,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:42,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:42,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:42,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:06:42,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:42,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:06:42,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:42,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:42,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:42,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:42,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:42,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:06:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:42,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:42,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:42,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:06:42,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:42,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:06:42,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:42,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:42,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:42,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:42,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:42,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 09:06:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:42,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:42,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:42,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 09:06:42,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:42,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 09:06:42,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:42,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:06:42,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:42,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 09:06:42,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:42,416 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-13 09:06:42,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417690551] [2020-10-13 09:06:42,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:06:42,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:06:42,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852278746] [2020-10-13 09:06:42,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:06:42,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:06:42,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:06:42,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:06:42,419 INFO L87 Difference]: Start difference. First operand 2934 states and 3540 transitions. Second operand 5 states. [2020-10-13 09:06:49,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:06:49,973 INFO L93 Difference]: Finished difference Result 5924 states and 7165 transitions. [2020-10-13 09:06:49,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:06:49,975 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 244 [2020-10-13 09:06:49,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:06:49,984 INFO L225 Difference]: With dead ends: 5924 [2020-10-13 09:06:49,985 INFO L226 Difference]: Without dead ends: 2942 [2020-10-13 09:06:49,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:06:49,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-10-13 09:06:50,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 2934. [2020-10-13 09:06:50,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2934 states. [2020-10-13 09:06:50,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2934 states to 2934 states and 3536 transitions. [2020-10-13 09:06:50,047 INFO L78 Accepts]: Start accepts. Automaton has 2934 states and 3536 transitions. Word has length 244 [2020-10-13 09:06:50,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:06:50,048 INFO L479 AbstractCegarLoop]: Abstraction has 2934 states and 3536 transitions. [2020-10-13 09:06:50,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:06:50,048 INFO L276 IsEmpty]: Start isEmpty. Operand 2934 states and 3536 transitions. [2020-10-13 09:06:50,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-13 09:06:50,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:06:50,054 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:06:50,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:06:50,055 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:06:50,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:06:50,055 INFO L82 PathProgramCache]: Analyzing trace with hash 882142776, now seen corresponding path program 1 times [2020-10-13 09:06:50,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:06:50,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113577638] [2020-10-13 09:06:50,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:06:50,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:50,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:50,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:51,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:51,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:51,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:51,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-13 09:06:51,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:06:51,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1868 [2020-10-13 09:06:51,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:51,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:06:51,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-10-13 09:06:51,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 09:06:51,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:52,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:06:52,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:52,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:52,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:52,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:06:52,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:52,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:06:52,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:52,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:52,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:52,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:52,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:52,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:06:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:52,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:52,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:52,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:06:52,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:52,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:06:52,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:52,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:52,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:52,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:52,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:06:52,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 09:06:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:52,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:52,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:52,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-13 09:06:52,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:52,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-13 09:06:52,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:52,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:06:52,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:52,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-13 09:06:52,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:52,454 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-13 09:06:52,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113577638] [2020-10-13 09:06:52,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:06:52,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:06:52,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178752066] [2020-10-13 09:06:52,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:06:52,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:06:52,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:06:52,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:06:52,457 INFO L87 Difference]: Start difference. First operand 2934 states and 3536 transitions. Second operand 5 states. [2020-10-13 09:06:58,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:06:58,770 INFO L93 Difference]: Finished difference Result 5927 states and 7158 transitions. [2020-10-13 09:06:58,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:06:58,772 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 249 [2020-10-13 09:06:58,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:06:58,784 INFO L225 Difference]: With dead ends: 5927 [2020-10-13 09:06:58,784 INFO L226 Difference]: Without dead ends: 2942 [2020-10-13 09:06:58,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:06:58,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-10-13 09:06:58,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 2934. [2020-10-13 09:06:58,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2934 states. [2020-10-13 09:06:58,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2934 states to 2934 states and 3534 transitions. [2020-10-13 09:06:58,848 INFO L78 Accepts]: Start accepts. Automaton has 2934 states and 3534 transitions. Word has length 249 [2020-10-13 09:06:58,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:06:58,849 INFO L479 AbstractCegarLoop]: Abstraction has 2934 states and 3534 transitions. [2020-10-13 09:06:58,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:06:58,849 INFO L276 IsEmpty]: Start isEmpty. Operand 2934 states and 3534 transitions. [2020-10-13 09:06:58,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-13 09:06:58,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:06:58,855 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:06:58,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:06:58,856 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:06:58,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:06:58,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1530943914, now seen corresponding path program 1 times [2020-10-13 09:06:58,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:06:58,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518986102] [2020-10-13 09:06:58,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:06:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:58,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:59,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:59,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:59,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:01,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:01,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:03,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:03,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-13 09:07:03,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:07:03,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4966 [2020-10-13 09:07:03,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:03,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 09:07:03,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-10-13 09:07:03,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 09:07:03,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:04,315 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 25 [2020-10-13 09:07:04,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:07:04,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:04,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:04,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:04,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:07:04,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:04,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:07:04,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:04,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:07:04,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:04,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:07:04,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:04,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:07:04,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:04,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:04,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:04,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:07:04,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:04,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 09:07:04,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:04,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:07:04,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:04,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:07:04,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:04,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 09:07:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:04,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:04,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:04,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 09:07:04,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:04,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 09:07:04,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:04,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 09:07:04,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:04,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-13 09:07:04,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:04,666 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-13 09:07:04,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518986102] [2020-10-13 09:07:04,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:07:04,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 09:07:04,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139638603] [2020-10-13 09:07:04,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 09:07:04,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:07:04,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 09:07:04,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-13 09:07:04,668 INFO L87 Difference]: Start difference. First operand 2934 states and 3534 transitions. Second operand 9 states. [2020-10-13 09:07:07,259 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2020-10-13 09:07:08,754 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-10-13 09:07:15,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:07:15,087 INFO L93 Difference]: Finished difference Result 7775 states and 9624 transitions. [2020-10-13 09:07:15,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:07:15,089 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 250 [2020-10-13 09:07:15,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:07:15,103 INFO L225 Difference]: With dead ends: 7775 [2020-10-13 09:07:15,103 INFO L226 Difference]: Without dead ends: 4795 [2020-10-13 09:07:15,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2020-10-13 09:07:15,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4795 states. [2020-10-13 09:07:15,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4795 to 4786. [2020-10-13 09:07:15,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4786 states. [2020-10-13 09:07:15,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4786 states to 4786 states and 5610 transitions. [2020-10-13 09:07:15,197 INFO L78 Accepts]: Start accepts. Automaton has 4786 states and 5610 transitions. Word has length 250 [2020-10-13 09:07:15,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:07:15,197 INFO L479 AbstractCegarLoop]: Abstraction has 4786 states and 5610 transitions. [2020-10-13 09:07:15,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 09:07:15,198 INFO L276 IsEmpty]: Start isEmpty. Operand 4786 states and 5610 transitions. [2020-10-13 09:07:15,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-13 09:07:15,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:07:15,207 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:07:15,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:07:15,207 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:07:15,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:07:15,208 INFO L82 PathProgramCache]: Analyzing trace with hash -338620961, now seen corresponding path program 1 times [2020-10-13 09:07:15,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:07:15,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501730271] [2020-10-13 09:07:15,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:07:15,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:15,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:15,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:16,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:17,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:17,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-13 09:07:17,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:07:17,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1810 [2020-10-13 09:07:17,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:17,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:07:17,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 207 [2020-10-13 09:07:17,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 09:07:17,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:17,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:07:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:17,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:17,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:17,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:07:17,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:17,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:07:17,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:17,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:07:17,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:17,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:07:17,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:17,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:07:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:17,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:17,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:17,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:07:17,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:17,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 09:07:17,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:17,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:07:17,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:17,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:07:17,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:17,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 09:07:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:17,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:17,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:17,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:07:17,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:17,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 09:07:17,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:17,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:07:17,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:17,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 09:07:17,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:17,435 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-13 09:07:17,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501730271] [2020-10-13 09:07:17,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:07:17,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:07:17,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197855173] [2020-10-13 09:07:17,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:07:17,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:07:17,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:07:17,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:07:17,437 INFO L87 Difference]: Start difference. First operand 4786 states and 5610 transitions. Second operand 5 states. [2020-10-13 09:07:25,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:07:25,469 INFO L93 Difference]: Finished difference Result 9598 states and 11275 transitions. [2020-10-13 09:07:25,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:07:25,474 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 266 [2020-10-13 09:07:25,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:07:25,489 INFO L225 Difference]: With dead ends: 9598 [2020-10-13 09:07:25,489 INFO L226 Difference]: Without dead ends: 4794 [2020-10-13 09:07:25,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:07:25,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4794 states. [2020-10-13 09:07:25,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4794 to 4786. [2020-10-13 09:07:25,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4786 states. [2020-10-13 09:07:25,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4786 states to 4786 states and 5608 transitions. [2020-10-13 09:07:25,588 INFO L78 Accepts]: Start accepts. Automaton has 4786 states and 5608 transitions. Word has length 266 [2020-10-13 09:07:25,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:07:25,589 INFO L479 AbstractCegarLoop]: Abstraction has 4786 states and 5608 transitions. [2020-10-13 09:07:25,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:07:25,589 INFO L276 IsEmpty]: Start isEmpty. Operand 4786 states and 5608 transitions. [2020-10-13 09:07:25,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-13 09:07:25,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:07:25,602 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:07:25,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:07:25,603 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:07:25,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:07:25,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1193036233, now seen corresponding path program 1 times [2020-10-13 09:07:25,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:07:25,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983280737] [2020-10-13 09:07:25,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:07:25,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:25,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:25,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:26,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:28,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:29,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:29,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-13 09:07:29,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:07:29,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3628 [2020-10-13 09:07:29,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:29,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:07:29,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 211 [2020-10-13 09:07:29,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 09:07:29,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:29,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:07:29,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:29,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:29,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:29,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:07:29,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:29,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:07:29,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:29,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:07:29,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:29,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:07:29,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:29,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:07:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:29,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:29,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:29,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:07:29,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:29,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 09:07:29,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:29,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:07:29,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:29,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:07:29,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:29,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 09:07:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:29,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:29,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:29,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 09:07:29,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:29,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 09:07:29,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:29,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 09:07:29,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:29,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-13 09:07:29,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:29,649 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-13 09:07:29,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983280737] [2020-10-13 09:07:29,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:07:29,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:07:29,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591840452] [2020-10-13 09:07:29,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:07:29,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:07:29,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:07:29,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:07:29,651 INFO L87 Difference]: Start difference. First operand 4786 states and 5608 transitions. Second operand 6 states. [2020-10-13 09:07:40,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:07:40,343 INFO L93 Difference]: Finished difference Result 13289 states and 15919 transitions. [2020-10-13 09:07:40,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:07:40,346 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 272 [2020-10-13 09:07:40,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:07:40,371 INFO L225 Difference]: With dead ends: 13289 [2020-10-13 09:07:40,371 INFO L226 Difference]: Without dead ends: 8509 [2020-10-13 09:07:40,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:07:40,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8509 states. [2020-10-13 09:07:40,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8509 to 7885. [2020-10-13 09:07:40,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7885 states. [2020-10-13 09:07:40,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7885 states to 7885 states and 9012 transitions. [2020-10-13 09:07:40,536 INFO L78 Accepts]: Start accepts. Automaton has 7885 states and 9012 transitions. Word has length 272 [2020-10-13 09:07:40,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:07:40,537 INFO L479 AbstractCegarLoop]: Abstraction has 7885 states and 9012 transitions. [2020-10-13 09:07:40,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:07:40,537 INFO L276 IsEmpty]: Start isEmpty. Operand 7885 states and 9012 transitions. [2020-10-13 09:07:40,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-13 09:07:40,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:07:40,547 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:07:40,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 09:07:40,547 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:07:40,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:07:40,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1185015633, now seen corresponding path program 1 times [2020-10-13 09:07:40,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:07:40,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090991105] [2020-10-13 09:07:40,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:07:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:40,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:40,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:40,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:42,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:42,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:43,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:43,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-13 09:07:43,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:07:43,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3274 [2020-10-13 09:07:43,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:43,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:07:43,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 214 [2020-10-13 09:07:43,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 09:07:43,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:43,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:07:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:44,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:44,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:44,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:07:44,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:44,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:07:44,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:44,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:07:44,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:44,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:07:44,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:44,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:07:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:44,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:44,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:44,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:07:44,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:44,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:07:44,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:44,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:07:44,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:44,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:07:44,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:44,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 09:07:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:44,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:44,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:44,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 09:07:44,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:44,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 09:07:44,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:44,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 09:07:44,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:44,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 09:07:44,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:44,354 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-13 09:07:44,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090991105] [2020-10-13 09:07:44,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:07:44,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:07:44,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988891723] [2020-10-13 09:07:44,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:07:44,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:07:44,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:07:44,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:07:44,357 INFO L87 Difference]: Start difference. First operand 7885 states and 9012 transitions. Second operand 6 states. [2020-10-13 09:07:56,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:07:56,768 INFO L93 Difference]: Finished difference Result 18296 states and 21344 transitions. [2020-10-13 09:07:56,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:07:56,771 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 275 [2020-10-13 09:07:56,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:07:56,805 INFO L225 Difference]: With dead ends: 18296 [2020-10-13 09:07:56,805 INFO L226 Difference]: Without dead ends: 10364 [2020-10-13 09:07:56,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:07:56,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10364 states. [2020-10-13 09:07:56,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10364 to 9128. [2020-10-13 09:07:56,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9128 states. [2020-10-13 09:07:56,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9128 states to 9128 states and 10553 transitions. [2020-10-13 09:07:56,997 INFO L78 Accepts]: Start accepts. Automaton has 9128 states and 10553 transitions. Word has length 275 [2020-10-13 09:07:56,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:07:56,998 INFO L479 AbstractCegarLoop]: Abstraction has 9128 states and 10553 transitions. [2020-10-13 09:07:56,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:07:56,998 INFO L276 IsEmpty]: Start isEmpty. Operand 9128 states and 10553 transitions. [2020-10-13 09:07:57,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-13 09:07:57,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:07:57,007 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:07:57,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 09:07:57,008 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:07:57,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:07:57,008 INFO L82 PathProgramCache]: Analyzing trace with hash -2145734892, now seen corresponding path program 1 times [2020-10-13 09:07:57,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:07:57,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906034335] [2020-10-13 09:07:57,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:07:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:57,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:57,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:57,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:00,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:02,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:02,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-13 09:08:02,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:08:02,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 09:08:02,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:02,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:08:02,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 222 [2020-10-13 09:08:02,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 09:08:02,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:02,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:08:02,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:02,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:02,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:02,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:08:02,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:02,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:08:02,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:02,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:08:02,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:08:02,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:08:02,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:02,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:08:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:02,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:02,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:02,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:08:02,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:02,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 09:08:02,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:02,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:08:02,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:08:02,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:08:02,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:02,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 09:08:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:02,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:02,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:02,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 09:08:02,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:02,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 09:08:02,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:02,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:08:02,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:08:02,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 09:08:02,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:02,398 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-13 09:08:02,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906034335] [2020-10-13 09:08:02,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:08:02,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:08:02,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255599504] [2020-10-13 09:08:02,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:08:02,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:08:02,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:08:02,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:08:02,400 INFO L87 Difference]: Start difference. First operand 9128 states and 10553 transitions. Second operand 5 states. [2020-10-13 09:08:11,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:08:11,006 INFO L93 Difference]: Finished difference Result 18270 states and 21167 transitions. [2020-10-13 09:08:11,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:08:11,016 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 281 [2020-10-13 09:08:11,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:08:11,042 INFO L225 Difference]: With dead ends: 18270 [2020-10-13 09:08:11,043 INFO L226 Difference]: Without dead ends: 9136 [2020-10-13 09:08:11,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:08:11,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9136 states. [2020-10-13 09:08:11,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9136 to 9128. [2020-10-13 09:08:11,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9128 states. [2020-10-13 09:08:11,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9128 states to 9128 states and 10537 transitions. [2020-10-13 09:08:11,242 INFO L78 Accepts]: Start accepts. Automaton has 9128 states and 10537 transitions. Word has length 281 [2020-10-13 09:08:11,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:08:11,243 INFO L479 AbstractCegarLoop]: Abstraction has 9128 states and 10537 transitions. [2020-10-13 09:08:11,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:08:11,244 INFO L276 IsEmpty]: Start isEmpty. Operand 9128 states and 10537 transitions. [2020-10-13 09:08:11,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-13 09:08:11,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:08:11,257 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, 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, 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 09:08:11,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 09:08:11,257 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:08:11,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:08:11,258 INFO L82 PathProgramCache]: Analyzing trace with hash 874854529, now seen corresponding path program 1 times [2020-10-13 09:08:11,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:08:11,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735462119] [2020-10-13 09:08:11,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:08:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:11,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:11,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:12,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:13,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:14,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:14,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-13 09:08:14,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:08:14,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3484 [2020-10-13 09:08:14,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:14,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:08:14,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-13 09:08:14,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:08:14,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:14,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:08:14,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:14,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:14,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:14,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:08:14,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:14,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:08:14,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:14,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:08:14,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:08:14,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:08:14,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:14,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:08:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:14,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:14,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:14,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 09:08:14,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:14,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 09:08:14,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:14,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:08:14,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:08:14,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:08:14,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:14,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-13 09:08:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:14,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:15,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:15,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 09:08:15,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:15,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 09:08:15,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:15,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:08:15,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:08:15,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 09:08:15,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:15,137 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-13 09:08:15,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735462119] [2020-10-13 09:08:15,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:08:15,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:08:15,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251480060] [2020-10-13 09:08:15,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:08:15,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:08:15,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:08:15,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:08:15,139 INFO L87 Difference]: Start difference. First operand 9128 states and 10537 transitions. Second operand 5 states. [2020-10-13 09:08:22,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:08:22,956 INFO L93 Difference]: Finished difference Result 21046 states and 24900 transitions. [2020-10-13 09:08:22,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:08:22,960 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 283 [2020-10-13 09:08:22,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:08:22,999 INFO L225 Difference]: With dead ends: 21046 [2020-10-13 09:08:22,999 INFO L226 Difference]: Without dead ends: 11924 [2020-10-13 09:08:23,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:08:23,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11924 states. [2020-10-13 09:08:23,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11924 to 11910. [2020-10-13 09:08:23,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11910 states. [2020-10-13 09:08:23,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11910 states to 11910 states and 13626 transitions. [2020-10-13 09:08:23,254 INFO L78 Accepts]: Start accepts. Automaton has 11910 states and 13626 transitions. Word has length 283 [2020-10-13 09:08:23,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:08:23,255 INFO L479 AbstractCegarLoop]: Abstraction has 11910 states and 13626 transitions. [2020-10-13 09:08:23,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:08:23,255 INFO L276 IsEmpty]: Start isEmpty. Operand 11910 states and 13626 transitions. [2020-10-13 09:08:23,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-13 09:08:23,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:08:23,266 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, 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, 1, 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 09:08:23,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 09:08:23,267 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:08:23,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:08:23,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1483899346, now seen corresponding path program 1 times [2020-10-13 09:08:23,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:08:23,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006942553] [2020-10-13 09:08:23,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:08:23,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:23,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:23,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:24,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking...