/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=SHALLOWEST --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 language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:55:31,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:55:31,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:55:31,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:55:31,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:55:31,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:55:31,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:55:31,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:55:31,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:55:31,111 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:55:31,112 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:55:31,114 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:55:31,114 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:55:31,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:55:31,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:55:31,125 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:55:31,126 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:55:31,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:55:31,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:55:31,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:55:31,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:55:31,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:55:31,176 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:55:31,180 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:55:31,189 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:55:31,190 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:55:31,191 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:55:31,193 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:55:31,194 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:55:31,195 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:55:31,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:55:31,197 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:55:31,199 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:55:31,200 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:55:31,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:55:31,202 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:55:31,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:55:31,204 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:55:31,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:55:31,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:55:31,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:55:31,215 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 [2020-10-26 23:55:31,268 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:55:31,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:55:31,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:55:31,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:55:31,273 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:55:31,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:55:31,274 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:55:31,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:55:31,274 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:55:31,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:55:31,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:55:31,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:55:31,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:55:31,276 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:55:31,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:55:31,277 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:55:31,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:55:31,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:55:31,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:55:31,277 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:55:31,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:55:31,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:55:31,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:55:31,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:55:31,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:55:31,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:55:31,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:55:31,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:55:31,279 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:55:31,280 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:55:31,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:55:31,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:55:31,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:55:31,844 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:55:31,845 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:55:31,846 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label22.c [2020-10-26 23:55:31,934 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7e47513e/44689736083443928167d2d0ddc43212/FLAG9f47b2d57 [2020-10-26 23:55:32,785 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:55:32,786 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label22.c [2020-10-26 23:55:32,808 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7e47513e/44689736083443928167d2d0ddc43212/FLAG9f47b2d57 [2020-10-26 23:55:32,939 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7e47513e/44689736083443928167d2d0ddc43212 [2020-10-26 23:55:32,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:55:32,951 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:55:32,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:55:32,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:55:32,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:55:32,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:55:32" (1/1) ... [2020-10-26 23:55:32,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55780ec0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:55:32, skipping insertion in model container [2020-10-26 23:55:32,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:55:32" (1/1) ... [2020-10-26 23:55:32,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:55:33,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:55:33,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:55:33,974 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:55:34,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:55:34,285 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:55:34,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:55:34 WrapperNode [2020-10-26 23:55:34,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:55:34,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:55:34,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:55:34,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:55:34,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:55:34" (1/1) ... [2020-10-26 23:55:34,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:55:34" (1/1) ... [2020-10-26 23:55:34,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:55:34" (1/1) ... [2020-10-26 23:55:34,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:55:34" (1/1) ... [2020-10-26 23:55:34,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:55:34" (1/1) ... [2020-10-26 23:55:34,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:55:34" (1/1) ... [2020-10-26 23:55:34,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:55:34" (1/1) ... [2020-10-26 23:55:34,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:55:34,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:55:34,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:55:34,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:55:34,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:55:34" (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 [2020-10-26 23:55:34,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:55:34,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:55:34,599 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:55:34,599 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:55:34,600 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:55:34,600 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:55:34,600 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:55:34,600 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:55:34,600 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:55:34,601 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:55:34,601 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:55:34,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:55:34,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:55:34,601 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:55:34,601 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:55:34,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:55:34,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:55:34,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:55:34,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:55:34,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:55:34,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:55:37,326 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:55:37,326 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:55:37,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:55:37 BoogieIcfgContainer [2020-10-26 23:55:37,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:55:37,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:55:37,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:55:37,335 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:55:37,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:55:32" (1/3) ... [2020-10-26 23:55:37,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2895109b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:55:37, skipping insertion in model container [2020-10-26 23:55:37,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:55:34" (2/3) ... [2020-10-26 23:55:37,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2895109b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:55:37, skipping insertion in model container [2020-10-26 23:55:37,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:55:37" (3/3) ... [2020-10-26 23:55:37,338 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label22.c [2020-10-26 23:55:37,351 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:55:37,357 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:55:37,371 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:55:37,401 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:55:37,401 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:55:37,402 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:55:37,402 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:55:37,402 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:55:37,402 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:55:37,402 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:55:37,402 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:55:37,436 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-26 23:55:37,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-26 23:55:37,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:37,443 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] [2020-10-26 23:55:37,444 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:37,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:37,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1604022684, now seen corresponding path program 1 times [2020-10-26 23:55:37,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:37,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539047074] [2020-10-26 23:55:37,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:37,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:38,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:38,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-26 23:55:38,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:38,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 561 [2020-10-26 23:55:38,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:38,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:55:38,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:55:38,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-26 23:55:38,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:55:38,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:55:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:38,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:38,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:38,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:55:38,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:38,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 23:55:38,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:38,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:55:38,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:38,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:55:38,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:38,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:55:38,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539047074] [2020-10-26 23:55:38,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:55:38,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:55:38,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709585864] [2020-10-26 23:55:38,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:55:38,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:55:38,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:55:38,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:55:38,467 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-26 23:55:43,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:55:43,521 INFO L93 Difference]: Finished difference Result 1174 states and 2171 transitions. [2020-10-26 23:55:43,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:55:43,523 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-26 23:55:43,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:55:43,550 INFO L225 Difference]: With dead ends: 1174 [2020-10-26 23:55:43,550 INFO L226 Difference]: Without dead ends: 697 [2020-10-26 23:55:43,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:55:43,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-26 23:55:43,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 690. [2020-10-26 23:55:43,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-10-26 23:55:43,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1078 transitions. [2020-10-26 23:55:43,677 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1078 transitions. Word has length 20 [2020-10-26 23:55:43,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:55:43,678 INFO L481 AbstractCegarLoop]: Abstraction has 690 states and 1078 transitions. [2020-10-26 23:55:43,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:55:43,678 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1078 transitions. [2020-10-26 23:55:43,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-26 23:55:43,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:43,684 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-26 23:55:43,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:55:43,685 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:43,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:43,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1010905366, now seen corresponding path program 1 times [2020-10-26 23:55:43,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:43,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208371614] [2020-10-26 23:55:43,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:43,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:44,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:44,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:44,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-26 23:55:44,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:55:44,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1073 [2020-10-26 23:55:44,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:44,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:55:44,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:55:44,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:55:44,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:55:44,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:55:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:44,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:44,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:44,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:55:44,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:44,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:55:44,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:44,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:55:44,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:44,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:55:44,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:55:45,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:55:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:45,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:45,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:45,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 23:55:45,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:45,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-26 23:55:45,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:45,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:45,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:45,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:55:45,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:45,373 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:55:45,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208371614] [2020-10-26 23:55:45,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:55:45,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 23:55:45,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655362522] [2020-10-26 23:55:45,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:55:45,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:55:45,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:55:45,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:55:45,382 INFO L87 Difference]: Start difference. First operand 690 states and 1078 transitions. Second operand 8 states. [2020-10-26 23:55:50,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:55:50,833 INFO L93 Difference]: Finished difference Result 1741 states and 2663 transitions. [2020-10-26 23:55:50,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:55:50,834 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2020-10-26 23:55:50,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:55:50,842 INFO L225 Difference]: With dead ends: 1741 [2020-10-26 23:55:50,843 INFO L226 Difference]: Without dead ends: 1057 [2020-10-26 23:55:50,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:55:50,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2020-10-26 23:55:50,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 1040. [2020-10-26 23:55:50,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1040 states. [2020-10-26 23:55:50,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1424 transitions. [2020-10-26 23:55:50,900 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1424 transitions. Word has length 95 [2020-10-26 23:55:50,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:55:50,901 INFO L481 AbstractCegarLoop]: Abstraction has 1040 states and 1424 transitions. [2020-10-26 23:55:50,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:55:50,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1424 transitions. [2020-10-26 23:55:50,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-26 23:55:50,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:50,912 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-26 23:55:50,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:55:50,913 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:50,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:50,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1986641380, now seen corresponding path program 1 times [2020-10-26 23:55:50,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:50,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742926458] [2020-10-26 23:55:50,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:50,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:51,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:51,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:51,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:51,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:55:51,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:55:51,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 860 [2020-10-26 23:55:51,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:51,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:55:51,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:55:51,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:55:51,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:51,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:55:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:51,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:51,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:51,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:55:51,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:51,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:55:51,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:51,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:55:51,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:51,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:55:51,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:55:51,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:55:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:52,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:52,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:52,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:55:52,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:52,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-26 23:55:52,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:52,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:52,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:52,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:55:52,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:52,230 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:55:52,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742926458] [2020-10-26 23:55:52,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:55:52,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:55:52,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549527232] [2020-10-26 23:55:52,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:55:52,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:55:52,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:55:52,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:55:52,234 INFO L87 Difference]: Start difference. First operand 1040 states and 1424 transitions. Second operand 7 states. [2020-10-26 23:55:57,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:55:57,679 INFO L93 Difference]: Finished difference Result 3173 states and 4420 transitions. [2020-10-26 23:55:57,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:55:57,680 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-26 23:55:57,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:55:57,694 INFO L225 Difference]: With dead ends: 3173 [2020-10-26 23:55:57,694 INFO L226 Difference]: Without dead ends: 2139 [2020-10-26 23:55:57,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:55:57,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2020-10-26 23:55:57,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 2090. [2020-10-26 23:55:57,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2090 states. [2020-10-26 23:55:57,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 2622 transitions. [2020-10-26 23:55:57,801 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 2622 transitions. Word has length 96 [2020-10-26 23:55:57,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:55:57,802 INFO L481 AbstractCegarLoop]: Abstraction has 2090 states and 2622 transitions. [2020-10-26 23:55:57,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:55:57,802 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 2622 transitions. [2020-10-26 23:55:57,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-26 23:55:57,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:57,804 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-26 23:55:57,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:55:57,804 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:57,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:57,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1854829366, now seen corresponding path program 1 times [2020-10-26 23:55:57,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:57,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888078888] [2020-10-26 23:55:57,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:57,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:58,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:58,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-26 23:55:58,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:58,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-26 23:55:58,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:58,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:58,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-26 23:55:58,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 23:55:58,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:55:58,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:55:58,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:58,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:58,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:58,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:55:58,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:58,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:55:58,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:58,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:58,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:58,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:58,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:58,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:55:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:58,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:58,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:58,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:55:58,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:58,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-26 23:55:58,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:58,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:55:58,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:58,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 23:55:58,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:58,392 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:55:58,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888078888] [2020-10-26 23:55:58,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:55:58,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:55:58,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480669464] [2020-10-26 23:55:58,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:55:58,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:55:58,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:55:58,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:55:58,395 INFO L87 Difference]: Start difference. First operand 2090 states and 2622 transitions. Second operand 5 states. [2020-10-26 23:56:02,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:56:02,901 INFO L93 Difference]: Finished difference Result 4886 states and 6272 transitions. [2020-10-26 23:56:02,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:56:02,902 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-26 23:56:02,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:56:02,918 INFO L225 Difference]: With dead ends: 4886 [2020-10-26 23:56:02,918 INFO L226 Difference]: Without dead ends: 2802 [2020-10-26 23:56:02,924 INFO L677 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 [2020-10-26 23:56:02,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2802 states. [2020-10-26 23:56:03,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2802 to 2786. [2020-10-26 23:56:03,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2786 states. [2020-10-26 23:56:03,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 3426 transitions. [2020-10-26 23:56:03,032 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 3426 transitions. Word has length 111 [2020-10-26 23:56:03,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:56:03,033 INFO L481 AbstractCegarLoop]: Abstraction has 2786 states and 3426 transitions. [2020-10-26 23:56:03,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:56:03,034 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 3426 transitions. [2020-10-26 23:56:03,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-26 23:56:03,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:56:03,049 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:56:03,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:56:03,050 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:56:03,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:56:03,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1895569840, now seen corresponding path program 1 times [2020-10-26 23:56:03,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:56:03,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319391987] [2020-10-26 23:56:03,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:56:03,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:03,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:03,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:03,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:04,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:04,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:05,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:06,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:08,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:08,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-26 23:56:08,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 23:56:08,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-26 23:56:08,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:08,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:56:08,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:56:08,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-26 23:56:08,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:08,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:56:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:08,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:08,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:08,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:56:08,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:08,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:56:08,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:08,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:56:08,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:08,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:56:08,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:08,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:56:08,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:08,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:08,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:08,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:08,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:56:08,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:56:08,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-26 23:56:08,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:08,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:08,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:08,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 23:56:08,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:08,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:56:08,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:08,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:08,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:08,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:56:08,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:08,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-26 23:56:08,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:08,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:08,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:08,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:56:08,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:56:08,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-26 23:56:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:08,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:09,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:09,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:56:09,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:09,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-26 23:56:09,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:09,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:09,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:56:09,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:09,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:09,272 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 41 proven. 166 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-26 23:56:09,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319391987] [2020-10-26 23:56:09,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:56:09,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:56:09,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844142586] [2020-10-26 23:56:09,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:56:09,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:56:09,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:56:09,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:56:09,275 INFO L87 Difference]: Start difference. First operand 2786 states and 3426 transitions. Second operand 8 states. [2020-10-26 23:56:14,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:56:14,869 INFO L93 Difference]: Finished difference Result 6990 states and 8748 transitions. [2020-10-26 23:56:14,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:56:14,870 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 304 [2020-10-26 23:56:14,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:56:14,889 INFO L225 Difference]: With dead ends: 6990 [2020-10-26 23:56:14,889 INFO L226 Difference]: Without dead ends: 3485 [2020-10-26 23:56:14,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:56:14,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3485 states. [2020-10-26 23:56:14,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3485 to 3459. [2020-10-26 23:56:14,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3459 states. [2020-10-26 23:56:14,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3459 states to 3459 states and 3731 transitions. [2020-10-26 23:56:14,990 INFO L78 Accepts]: Start accepts. Automaton has 3459 states and 3731 transitions. Word has length 304 [2020-10-26 23:56:14,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:56:14,991 INFO L481 AbstractCegarLoop]: Abstraction has 3459 states and 3731 transitions. [2020-10-26 23:56:14,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:56:14,991 INFO L276 IsEmpty]: Start isEmpty. Operand 3459 states and 3731 transitions. [2020-10-26 23:56:15,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2020-10-26 23:56:15,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:56:15,003 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:56:15,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:56:15,003 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:56:15,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:56:15,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1425081012, now seen corresponding path program 1 times [2020-10-26 23:56:15,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:56:15,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556492348] [2020-10-26 23:56:15,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:56:15,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:15,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:15,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:15,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:20,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:20,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 492 [2020-10-26 23:56:20,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:56:20,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-26 23:56:20,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:20,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:56:20,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:56:20,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:56:20,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:20,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:56:20,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:20,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:20,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:20,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:56:20,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:20,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:56:20,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:20,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:56:20,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:20,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:56:20,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:20,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:56:20,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:20,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:20,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:20,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:56:20,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:20,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-26 23:56:20,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:20,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:20,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:20,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 23:56:20,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:20,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 23:56:20,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:20,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:20,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:20,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:56:20,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:20,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-26 23:56:20,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:20,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:20,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-26 23:56:20,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:20,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:20,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-26 23:56:20,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:20,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:20,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:20,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:56:20,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:20,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 23:56:20,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:20,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:20,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:56:20,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:20,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:20,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-26 23:56:20,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:20,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:20,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:20,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:56:20,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:20,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-26 23:56:20,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:20,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:20,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:56:20,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:20,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:21,281 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 48 proven. 285 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2020-10-26 23:56:21,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556492348] [2020-10-26 23:56:21,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:56:21,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:56:21,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43260114] [2020-10-26 23:56:21,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:56:21,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:56:21,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:56:21,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:56:21,285 INFO L87 Difference]: Start difference. First operand 3459 states and 3731 transitions. Second operand 7 states. [2020-10-26 23:56:25,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:56:25,620 INFO L93 Difference]: Finished difference Result 10031 states and 10967 transitions. [2020-10-26 23:56:25,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:56:25,622 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 474 [2020-10-26 23:56:25,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:56:25,653 INFO L225 Difference]: With dead ends: 10031 [2020-10-26 23:56:25,654 INFO L226 Difference]: Without dead ends: 6578 [2020-10-26 23:56:25,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:56:25,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6578 states. [2020-10-26 23:56:25,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6578 to 6223. [2020-10-26 23:56:25,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6223 states. [2020-10-26 23:56:25,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6223 states to 6223 states and 6764 transitions. [2020-10-26 23:56:25,839 INFO L78 Accepts]: Start accepts. Automaton has 6223 states and 6764 transitions. Word has length 474 [2020-10-26 23:56:25,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:56:25,840 INFO L481 AbstractCegarLoop]: Abstraction has 6223 states and 6764 transitions. [2020-10-26 23:56:25,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:56:25,840 INFO L276 IsEmpty]: Start isEmpty. Operand 6223 states and 6764 transitions. [2020-10-26 23:56:25,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2020-10-26 23:56:25,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:56:25,858 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:56:25,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:56:25,859 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:56:25,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:56:25,859 INFO L82 PathProgramCache]: Analyzing trace with hash 876410698, now seen corresponding path program 1 times [2020-10-26 23:56:25,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:56:25,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719771829] [2020-10-26 23:56:25,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:56:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:26,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:26,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:26,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:26,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:31,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:31,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 595 [2020-10-26 23:56:31,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:56:31,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-26 23:56:31,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:31,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:56:31,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:56:31,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-26 23:56:31,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:31,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:56:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:31,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:31,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:31,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:56:31,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:31,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:56:31,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:31,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:56:31,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:31,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:56:31,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:31,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:56:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:31,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:31,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:31,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-26 23:56:31,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:31,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 476 [2020-10-26 23:56:31,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:31,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:31,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:31,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-26 23:56:31,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:56:32,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-26 23:56:32,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:32,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:32,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:32,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:56:32,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:32,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-26 23:56:32,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:32,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:32,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:56:32,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:32,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:32,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-26 23:56:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:32,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:32,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:32,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:56:32,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:32,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 23:56:32,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:32,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:32,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:56:32,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:32,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:32,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2020-10-26 23:56:32,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:32,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:32,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:32,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:56:32,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:32,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-26 23:56:32,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:32,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:32,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:56:32,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:32,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:33,257 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 48 proven. 293 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2020-10-26 23:56:33,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719771829] [2020-10-26 23:56:33,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:56:33,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:56:33,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562127907] [2020-10-26 23:56:33,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:56:33,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:56:33,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:56:33,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:56:33,261 INFO L87 Difference]: Start difference. First operand 6223 states and 6764 transitions. Second operand 7 states. [2020-10-26 23:56:37,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:56:37,051 INFO L93 Difference]: Finished difference Result 12470 states and 13602 transitions. [2020-10-26 23:56:37,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:56:37,052 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 577 [2020-10-26 23:56:37,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:56:37,078 INFO L225 Difference]: With dead ends: 12470 [2020-10-26 23:56:37,079 INFO L226 Difference]: Without dead ends: 6590 [2020-10-26 23:56:37,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:56:37,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6590 states. [2020-10-26 23:56:37,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6590 to 6570. [2020-10-26 23:56:37,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6570 states. [2020-10-26 23:56:37,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6570 states to 6570 states and 7140 transitions. [2020-10-26 23:56:37,269 INFO L78 Accepts]: Start accepts. Automaton has 6570 states and 7140 transitions. Word has length 577 [2020-10-26 23:56:37,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:56:37,270 INFO L481 AbstractCegarLoop]: Abstraction has 6570 states and 7140 transitions. [2020-10-26 23:56:37,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:56:37,270 INFO L276 IsEmpty]: Start isEmpty. Operand 6570 states and 7140 transitions. [2020-10-26 23:56:37,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2020-10-26 23:56:37,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:56:37,300 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:56:37,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:56:37,301 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:56:37,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:56:37,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1112010948, now seen corresponding path program 1 times [2020-10-26 23:56:37,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:56:37,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348955033] [2020-10-26 23:56:37,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:56:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:37,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:37,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:37,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:42,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:42,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:42,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 716 [2020-10-26 23:56:42,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:56:42,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-26 23:56:42,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:42,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:42,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-26 23:56:42,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:56:42,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-26 23:56:42,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:56:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:42,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:42,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:42,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:56:42,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:42,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-26 23:56:42,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:42,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:42,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:42,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:42,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:42,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:56:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:42,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:42,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:42,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:56:42,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:42,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-26 23:56:42,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:42,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:56:42,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:42,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-26 23:56:42,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:43,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:56:43,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:43,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:43,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:43,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:56:43,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:43,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-26 23:56:43,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:43,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:43,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:43,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:56:43,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:43,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-26 23:56:43,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:43,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:43,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:43,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:56:43,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:43,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:56:43,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:43,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:43,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:56:43,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:43,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:43,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-10-26 23:56:43,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:43,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:43,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:43,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:56:43,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:43,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:56:43,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:43,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:43,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:56:43,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:43,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:43,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2020-10-26 23:56:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:43,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:43,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:43,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:56:43,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:43,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 23:56:43,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:43,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:43,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:56:43,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:43,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:44,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 198 proven. 301 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2020-10-26 23:56:44,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348955033] [2020-10-26 23:56:44,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:56:44,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:56:44,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126074854] [2020-10-26 23:56:44,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:56:44,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:56:44,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:56:44,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:56:44,260 INFO L87 Difference]: Start difference. First operand 6570 states and 7140 transitions. Second operand 7 states. [2020-10-26 23:56:48,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:56:48,337 INFO L93 Difference]: Finished difference Result 15530 states and 17108 transitions. [2020-10-26 23:56:48,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:56:48,338 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 696 [2020-10-26 23:56:48,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:56:48,390 INFO L225 Difference]: With dead ends: 15530 [2020-10-26 23:56:48,390 INFO L226 Difference]: Without dead ends: 9642 [2020-10-26 23:56:48,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:56:48,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9642 states. [2020-10-26 23:56:48,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9642 to 9632. [2020-10-26 23:56:48,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9632 states. [2020-10-26 23:56:48,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9632 states to 9632 states and 10362 transitions. [2020-10-26 23:56:48,690 INFO L78 Accepts]: Start accepts. Automaton has 9632 states and 10362 transitions. Word has length 696 [2020-10-26 23:56:48,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:56:48,692 INFO L481 AbstractCegarLoop]: Abstraction has 9632 states and 10362 transitions. [2020-10-26 23:56:48,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:56:48,692 INFO L276 IsEmpty]: Start isEmpty. Operand 9632 states and 10362 transitions. [2020-10-26 23:56:48,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 860 [2020-10-26 23:56:48,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:56:48,724 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:56:48,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:56:48,725 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:56:48,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:56:48,726 INFO L82 PathProgramCache]: Analyzing trace with hash -959025346, now seen corresponding path program 1 times [2020-10-26 23:56:48,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:56:48,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143338127] [2020-10-26 23:56:48,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:56:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:48,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:49,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:49,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:52,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:53,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:53,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:53,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 881 [2020-10-26 23:56:53,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:56:53,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-26 23:56:53,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:53,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:53,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-26 23:56:53,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:56:53,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:54,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:56:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:54,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:54,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:54,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:56:54,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:54,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:56:54,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:54,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:54,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:54,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:54,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:54,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:56:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:54,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:54,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:54,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:56:54,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:54,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-26 23:56:54,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:54,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:54,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:54,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:54,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:54,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:56:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:54,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:54,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:54,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:56:54,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:54,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-26 23:56:54,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:54,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:56:54,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:54,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 23:56:54,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:54,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:56:54,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:54,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:54,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:54,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:56:54,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:54,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-26 23:56:54,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:54,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:54,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:54,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:56:54,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:54,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-26 23:56:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:54,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:54,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:54,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:56:54,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:54,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:56:54,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:54,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:54,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:56:54,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:54,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:54,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-26 23:56:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:54,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:54,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:54,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:56:54,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:54,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:56:54,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:54,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:54,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:56:54,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:54,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:54,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 709 [2020-10-26 23:56:54,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:54,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:54,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:54,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 23:56:54,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:54,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-26 23:56:54,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:54,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:54,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 23:56:54,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:54,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:55,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1753 backedges. 324 proven. 347 refuted. 0 times theorem prover too weak. 1082 trivial. 0 not checked. [2020-10-26 23:56:55,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143338127] [2020-10-26 23:56:55,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:56:55,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:56:55,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189686053] [2020-10-26 23:56:55,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:56:55,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:56:55,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:56:55,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:56:55,800 INFO L87 Difference]: Start difference. First operand 9632 states and 10362 transitions. Second operand 7 states. [2020-10-26 23:56:59,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:56:59,897 INFO L93 Difference]: Finished difference Result 21298 states and 22946 transitions. [2020-10-26 23:56:59,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:56:59,898 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 859 [2020-10-26 23:56:59,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:56:59,938 INFO L225 Difference]: With dead ends: 21298 [2020-10-26 23:56:59,939 INFO L226 Difference]: Without dead ends: 12348 [2020-10-26 23:56:59,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:56:59,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12348 states. [2020-10-26 23:57:00,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12348 to 12340. [2020-10-26 23:57:00,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12340 states. [2020-10-26 23:57:00,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12340 states to 12340 states and 13200 transitions. [2020-10-26 23:57:00,280 INFO L78 Accepts]: Start accepts. Automaton has 12340 states and 13200 transitions. Word has length 859 [2020-10-26 23:57:00,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:00,281 INFO L481 AbstractCegarLoop]: Abstraction has 12340 states and 13200 transitions. [2020-10-26 23:57:00,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:57:00,282 INFO L276 IsEmpty]: Start isEmpty. Operand 12340 states and 13200 transitions. [2020-10-26 23:57:00,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 880 [2020-10-26 23:57:00,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:00,306 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:57:00,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:57:00,307 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:00,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:00,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1709698594, now seen corresponding path program 1 times [2020-10-26 23:57:00,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:00,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519353451] [2020-10-26 23:57:00,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:00,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:00,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:00,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:01,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:01,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:05,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:05,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 899 [2020-10-26 23:57:05,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:57:05,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-26 23:57:05,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:05,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:57:05,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:57:05,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 504 [2020-10-26 23:57:05,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:05,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:05,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:05,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:05,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:05,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:05,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:05,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:57:05,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:05,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:05,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:05,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:57:05,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:05,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:57:05,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:05,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:06,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:06,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:06,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:57:06,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:57:06,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 404 [2020-10-26 23:57:06,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:06,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:06,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:06,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-26 23:57:06,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:06,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:57:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:06,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:06,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:06,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-26 23:57:06,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:06,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-26 23:57:06,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:06,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:06,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:06,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-26 23:57:06,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:06,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-26 23:57:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:06,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:07,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:07,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:57:07,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:07,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-26 23:57:07,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:07,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:07,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:57:07,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:07,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:07,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2020-10-26 23:57:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:07,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:07,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:07,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:57:07,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:07,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:57:07,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:07,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:07,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:57:07,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:07,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:07,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 729 [2020-10-26 23:57:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:07,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:07,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:07,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 23:57:07,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:07,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-26 23:57:07,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:07,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:07,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 23:57:07,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:07,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:08,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1368 backedges. 73 proven. 698 refuted. 0 times theorem prover too weak. 597 trivial. 0 not checked. [2020-10-26 23:57:08,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519353451] [2020-10-26 23:57:08,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:57:08,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:57:08,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753038675] [2020-10-26 23:57:08,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:57:08,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:08,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:57:08,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:57:08,424 INFO L87 Difference]: Start difference. First operand 12340 states and 13200 transitions. Second operand 7 states. [2020-10-26 23:57:12,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:12,594 INFO L93 Difference]: Finished difference Result 24014 states and 25737 transitions. [2020-10-26 23:57:12,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:57:12,595 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 879 [2020-10-26 23:57:12,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:12,647 INFO L225 Difference]: With dead ends: 24014 [2020-10-26 23:57:12,647 INFO L226 Difference]: Without dead ends: 12356 [2020-10-26 23:57:12,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:57:12,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12356 states. [2020-10-26 23:57:13,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12356 to 12340. [2020-10-26 23:57:13,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12340 states. [2020-10-26 23:57:13,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12340 states to 12340 states and 13192 transitions. [2020-10-26 23:57:13,090 INFO L78 Accepts]: Start accepts. Automaton has 12340 states and 13192 transitions. Word has length 879 [2020-10-26 23:57:13,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:13,092 INFO L481 AbstractCegarLoop]: Abstraction has 12340 states and 13192 transitions. [2020-10-26 23:57:13,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:57:13,092 INFO L276 IsEmpty]: Start isEmpty. Operand 12340 states and 13192 transitions. [2020-10-26 23:57:13,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 951 [2020-10-26 23:57:13,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:13,120 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:57:13,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:57:13,120 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:13,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:13,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1064318984, now seen corresponding path program 1 times [2020-10-26 23:57:13,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:13,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349183729] [2020-10-26 23:57:13,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:13,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:13,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:13,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:14,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:18,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:18,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 972 [2020-10-26 23:57:18,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:57:18,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-10-26 23:57:18,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:18,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:18,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-26 23:57:18,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-26 23:57:18,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:18,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:18,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:18,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:18,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:18,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:18,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:57:18,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:18,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:18,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:18,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:18,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:18,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:57:18,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:18,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:18,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:18,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:57:18,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:18,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-26 23:57:18,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:18,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:18,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:18,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:18,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:18,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:57:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:18,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:18,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:18,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-26 23:57:18,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:18,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 23:57:18,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:18,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:18,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:18,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-26 23:57:18,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:18,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-26 23:57:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:18,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:19,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:19,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-26 23:57:19,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:19,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-26 23:57:19,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:19,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:19,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:19,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-26 23:57:19,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:19,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-10-26 23:57:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:19,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:19,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:19,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:57:19,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:19,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:57:19,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:19,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:19,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:57:19,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:19,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:19,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 690 [2020-10-26 23:57:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:19,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:19,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:19,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:57:19,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:19,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:57:19,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:19,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:19,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:57:19,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:19,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:19,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 800 [2020-10-26 23:57:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:19,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:19,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:19,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 23:57:19,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:19,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-26 23:57:19,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:19,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:19,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 23:57:19,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:19,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:19,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1973 backedges. 415 proven. 356 refuted. 0 times theorem prover too weak. 1202 trivial. 0 not checked. [2020-10-26 23:57:19,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349183729] [2020-10-26 23:57:19,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:57:19,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:57:19,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748779165] [2020-10-26 23:57:19,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:57:19,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:19,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:57:19,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:57:19,987 INFO L87 Difference]: Start difference. First operand 12340 states and 13192 transitions. Second operand 7 states. [2020-10-26 23:57:24,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:24,260 INFO L93 Difference]: Finished difference Result 26718 states and 28902 transitions. [2020-10-26 23:57:24,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:57:24,266 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 950 [2020-10-26 23:57:24,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:24,316 INFO L225 Difference]: With dead ends: 26718 [2020-10-26 23:57:24,317 INFO L226 Difference]: Without dead ends: 15060 [2020-10-26 23:57:24,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:57:24,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15060 states. [2020-10-26 23:57:24,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15060 to 14707. [2020-10-26 23:57:24,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14707 states. [2020-10-26 23:57:24,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14707 states to 14707 states and 15623 transitions. [2020-10-26 23:57:24,754 INFO L78 Accepts]: Start accepts. Automaton has 14707 states and 15623 transitions. Word has length 950 [2020-10-26 23:57:24,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:24,756 INFO L481 AbstractCegarLoop]: Abstraction has 14707 states and 15623 transitions. [2020-10-26 23:57:24,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:57:24,756 INFO L276 IsEmpty]: Start isEmpty. Operand 14707 states and 15623 transitions. [2020-10-26 23:57:24,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1175 [2020-10-26 23:57:24,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:24,797 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 23:57:24,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:57:24,798 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:24,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:24,799 INFO L82 PathProgramCache]: Analyzing trace with hash 777150504, now seen corresponding path program 1 times [2020-10-26 23:57:24,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:24,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911446493] [2020-10-26 23:57:24,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:25,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:25,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:25,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:30,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:30,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1196 [2020-10-26 23:57:30,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:57:30,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-26 23:57:30,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:30,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:30,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-26 23:57:30,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-26 23:57:30,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:30,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:30,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:30,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:30,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:30,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:30,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:57:30,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:30,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:30,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:30,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:30,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:30,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:57:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:30,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:30,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:30,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:57:30,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:30,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:57:30,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:30,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:30,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:30,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:30,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:30,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:57:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:30,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:30,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:30,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-26 23:57:30,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:30,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-26 23:57:30,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:30,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:30,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:30,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-26 23:57:30,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:30,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-26 23:57:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:30,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:30,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:30,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-26 23:57:30,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:30,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-26 23:57:30,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:30,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:30,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:30,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-26 23:57:30,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:30,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 633 [2020-10-26 23:57:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:30,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:30,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:30,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-26 23:57:30,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:30,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-26 23:57:30,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:30,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:30,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-26 23:57:30,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:30,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:30,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 777 [2020-10-26 23:57:30,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:30,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:31,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:31,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-26 23:57:31,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:31,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-26 23:57:31,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:31,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:31,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-26 23:57:31,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:31,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:31,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1050 [2020-10-26 23:57:31,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:31,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:31,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:31,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-26 23:57:31,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:31,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:57:31,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:31,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:31,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-26 23:57:31,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:31,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:32,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2382 backedges. 421 proven. 412 refuted. 0 times theorem prover too weak. 1549 trivial. 0 not checked. [2020-10-26 23:57:32,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911446493] [2020-10-26 23:57:32,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:57:32,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:57:32,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405842981] [2020-10-26 23:57:32,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:57:32,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:32,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:57:32,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:57:32,168 INFO L87 Difference]: Start difference. First operand 14707 states and 15623 transitions. Second operand 7 states. [2020-10-26 23:57:38,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:38,274 INFO L93 Difference]: Finished difference Result 31134 states and 33264 transitions. [2020-10-26 23:57:38,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:57:38,275 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1174 [2020-10-26 23:57:38,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:38,331 INFO L225 Difference]: With dead ends: 31134 [2020-10-26 23:57:38,331 INFO L226 Difference]: Without dead ends: 17109 [2020-10-26 23:57:38,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:57:38,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17109 states. [2020-10-26 23:57:38,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17109 to 17103. [2020-10-26 23:57:38,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17103 states. [2020-10-26 23:57:38,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17103 states to 17103 states and 18235 transitions. [2020-10-26 23:57:38,709 INFO L78 Accepts]: Start accepts. Automaton has 17103 states and 18235 transitions. Word has length 1174 [2020-10-26 23:57:38,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:38,710 INFO L481 AbstractCegarLoop]: Abstraction has 17103 states and 18235 transitions. [2020-10-26 23:57:38,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:57:38,711 INFO L276 IsEmpty]: Start isEmpty. Operand 17103 states and 18235 transitions. [2020-10-26 23:57:38,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1177 [2020-10-26 23:57:38,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:38,753 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:57:38,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:57:38,754 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:38,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:38,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1967715996, now seen corresponding path program 1 times [2020-10-26 23:57:38,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:38,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194893362] [2020-10-26 23:57:38,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:38,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:39,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:39,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:41,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:42,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:42,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:43,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:43,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:43,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1198 [2020-10-26 23:57:43,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:57:43,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-26 23:57:43,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:43,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:43,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 641 [2020-10-26 23:57:43,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-26 23:57:43,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:44,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:44,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:44,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:44,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:44,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:44,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:57:44,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:44,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:44,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:44,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:44,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:44,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:57:44,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:44,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:44,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:44,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:57:44,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:44,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 23:57:44,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:44,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:44,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:44,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:44,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:44,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:57:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:44,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:44,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:44,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-26 23:57:44,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:44,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:57:44,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:44,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:44,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:44,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:44,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:44,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-26 23:57:44,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:44,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:44,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:44,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-26 23:57:44,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:44,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-26 23:57:44,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:44,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:44,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:44,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-26 23:57:44,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:44,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-26 23:57:44,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:44,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:44,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:44,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-26 23:57:44,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:44,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-26 23:57:44,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:44,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:44,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:44,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-26 23:57:44,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:44,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 779 [2020-10-26 23:57:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:44,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:44,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:44,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-26 23:57:44,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:44,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-26 23:57:44,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:44,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:44,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-26 23:57:44,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:44,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:44,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1052 [2020-10-26 23:57:45,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:45,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:45,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:45,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-26 23:57:45,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:45,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-26 23:57:45,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:45,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:45,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-26 23:57:45,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:45,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:45,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2386 backedges. 529 proven. 252 refuted. 0 times theorem prover too weak. 1605 trivial. 0 not checked. [2020-10-26 23:57:45,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194893362] [2020-10-26 23:57:45,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:57:45,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:57:45,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755015435] [2020-10-26 23:57:45,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:57:45,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:45,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:57:45,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:57:45,956 INFO L87 Difference]: Start difference. First operand 17103 states and 18235 transitions. Second operand 7 states. [2020-10-26 23:57:50,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:50,519 INFO L93 Difference]: Finished difference Result 35564 states and 38142 transitions. [2020-10-26 23:57:50,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:57:50,521 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1176 [2020-10-26 23:57:50,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:50,570 INFO L225 Difference]: With dead ends: 35564 [2020-10-26 23:57:50,570 INFO L226 Difference]: Without dead ends: 18804 [2020-10-26 23:57:50,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:57:50,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18804 states. [2020-10-26 23:57:50,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18804 to 17442. [2020-10-26 23:57:50,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17442 states. [2020-10-26 23:57:50,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17442 states to 17442 states and 18518 transitions. [2020-10-26 23:57:50,955 INFO L78 Accepts]: Start accepts. Automaton has 17442 states and 18518 transitions. Word has length 1176 [2020-10-26 23:57:50,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:50,957 INFO L481 AbstractCegarLoop]: Abstraction has 17442 states and 18518 transitions. [2020-10-26 23:57:50,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:57:50,957 INFO L276 IsEmpty]: Start isEmpty. Operand 17442 states and 18518 transitions. [2020-10-26 23:57:51,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1444 [2020-10-26 23:57:51,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:51,030 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:57:51,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:57:51,030 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:51,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:51,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1953558374, now seen corresponding path program 1 times [2020-10-26 23:57:51,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:51,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216964435] [2020-10-26 23:57:51,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:51,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:51,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:51,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:52,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:56,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:56,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:56,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1467 [2020-10-26 23:57:56,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:57:56,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-26 23:57:56,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:56,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:56,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-26 23:57:56,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:57:56,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:56,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:56,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:56,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:56,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:56,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:56,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:57:56,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:56,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:56,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:56,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:56,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:56,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:57:56,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:56,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:56,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:56,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:57:56,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:56,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 23:57:56,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:56,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:56,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:56,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:56,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:56,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:57:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:56,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:56,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:56,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-26 23:57:56,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:56,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-26 23:57:56,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:56,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:56,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:56,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-26 23:57:56,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:56,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-26 23:57:56,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:56,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:57,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:57,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:57:57,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:57,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-26 23:57:57,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:57,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:57,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:57,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:57:57,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:57,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-26 23:57:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:57,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:57,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:57,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-26 23:57:57,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:57,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-26 23:57:57,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:57,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:57,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-26 23:57:57,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:57,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:57,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2020-10-26 23:57:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:57,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:57,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:57,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-26 23:57:57,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:57,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-26 23:57:57,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:57,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:57,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-26 23:57:57,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:57,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:57,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1067 [2020-10-26 23:57:57,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:57,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:57,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:57,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-26 23:57:57,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:57,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:57:57,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:57,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:57,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-26 23:57:57,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:57,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:57,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1179 [2020-10-26 23:57:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:57,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:57,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:57,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-26 23:57:57,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:57,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-26 23:57:57,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:57,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:57,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-10-26 23:57:57,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:57,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:59,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3580 backedges. 373 proven. 489 refuted. 0 times theorem prover too weak. 2718 trivial. 0 not checked. [2020-10-26 23:57:59,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216964435] [2020-10-26 23:57:59,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:57:59,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:57:59,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959611577] [2020-10-26 23:57:59,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:57:59,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:59,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:57:59,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:57:59,491 INFO L87 Difference]: Start difference. First operand 17442 states and 18518 transitions. Second operand 7 states. [2020-10-26 23:58:04,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:58:04,256 INFO L93 Difference]: Finished difference Result 34547 states and 36722 transitions. [2020-10-26 23:58:04,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:58:04,258 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1443 [2020-10-26 23:58:04,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:58:04,302 INFO L225 Difference]: With dead ends: 34547 [2020-10-26 23:58:04,302 INFO L226 Difference]: Without dead ends: 17791 [2020-10-26 23:58:04,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:58:04,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17791 states. [2020-10-26 23:58:04,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17791 to 17783. [2020-10-26 23:58:04,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17783 states. [2020-10-26 23:58:04,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17783 states to 17783 states and 18864 transitions. [2020-10-26 23:58:04,678 INFO L78 Accepts]: Start accepts. Automaton has 17783 states and 18864 transitions. Word has length 1443 [2020-10-26 23:58:04,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:58:04,680 INFO L481 AbstractCegarLoop]: Abstraction has 17783 states and 18864 transitions. [2020-10-26 23:58:04,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:58:04,680 INFO L276 IsEmpty]: Start isEmpty. Operand 17783 states and 18864 transitions. [2020-10-26 23:58:04,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1446 [2020-10-26 23:58:04,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:58:04,724 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:58:04,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:58:04,724 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:58:04,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:58:04,725 INFO L82 PathProgramCache]: Analyzing trace with hash -164640546, now seen corresponding path program 1 times [2020-10-26 23:58:04,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:58:04,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855495698] [2020-10-26 23:58:04,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:58:04,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:05,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:05,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:05,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:08,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:09,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:09,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1469 [2020-10-26 23:58:09,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:58:09,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-26 23:58:09,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:09,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:09,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-26 23:58:09,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:58:09,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:10,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:58:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:10,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:10,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:10,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:58:10,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:10,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:58:10,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:10,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:10,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:10,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:10,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:10,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:58:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:10,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:10,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:10,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:58:10,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:10,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-26 23:58:10,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:10,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:10,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:10,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:10,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:10,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:58:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:10,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:10,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:10,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-26 23:58:10,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:10,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-26 23:58:10,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:10,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:58:10,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:10,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-26 23:58:10,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:10,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-26 23:58:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:10,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:10,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:10,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:58:10,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:10,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-26 23:58:10,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:10,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:10,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:10,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:58:10,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:11,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-26 23:58:11,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:11,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:11,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:11,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-26 23:58:11,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:11,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-26 23:58:11,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:11,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:11,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-26 23:58:11,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:11,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:11,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2020-10-26 23:58:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:11,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:11,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:11,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-26 23:58:11,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:11,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-26 23:58:11,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:11,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:11,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-26 23:58:11,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:11,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:11,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1069 [2020-10-26 23:58:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:11,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:11,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:11,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-26 23:58:11,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:11,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:58:11,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:11,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:11,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-26 23:58:11,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:11,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:11,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1181 [2020-10-26 23:58:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:11,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:11,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:11,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-26 23:58:11,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:11,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-26 23:58:11,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:11,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:11,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-10-26 23:58:11,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:11,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:13,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3586 backedges. 373 proven. 489 refuted. 0 times theorem prover too weak. 2724 trivial. 0 not checked. [2020-10-26 23:58:13,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855495698] [2020-10-26 23:58:13,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:58:13,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:58:13,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805146571] [2020-10-26 23:58:13,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:58:13,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:58:13,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:58:13,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:58:13,380 INFO L87 Difference]: Start difference. First operand 17783 states and 18864 transitions. Second operand 7 states. [2020-10-26 23:58:18,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:58:18,261 INFO L93 Difference]: Finished difference Result 37923 states and 40638 transitions. [2020-10-26 23:58:18,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:58:18,262 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1445 [2020-10-26 23:58:18,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:58:18,312 INFO L225 Difference]: With dead ends: 37923 [2020-10-26 23:58:18,312 INFO L226 Difference]: Without dead ends: 20826 [2020-10-26 23:58:18,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:58:18,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20826 states. [2020-10-26 23:58:18,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20826 to 20150. [2020-10-26 23:58:18,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20150 states. [2020-10-26 23:58:18,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20150 states to 20150 states and 21309 transitions. [2020-10-26 23:58:18,741 INFO L78 Accepts]: Start accepts. Automaton has 20150 states and 21309 transitions. Word has length 1445 [2020-10-26 23:58:18,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:58:18,743 INFO L481 AbstractCegarLoop]: Abstraction has 20150 states and 21309 transitions. [2020-10-26 23:58:18,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:58:18,743 INFO L276 IsEmpty]: Start isEmpty. Operand 20150 states and 21309 transitions. [2020-10-26 23:58:18,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1656 [2020-10-26 23:58:18,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:58:18,801 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:58:18,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 23:58:18,802 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:58:18,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:58:18,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1290003762, now seen corresponding path program 1 times [2020-10-26 23:58:18,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:58:18,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853001448] [2020-10-26 23:58:18,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:58:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:19,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:19,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:19,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:24,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:24,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1683 [2020-10-26 23:58:24,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:58:24,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5305 [2020-10-26 23:58:24,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:24,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:24,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 851 [2020-10-26 23:58:24,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-26 23:58:24,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:24,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:58:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:24,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:24,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:24,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:58:24,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:24,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:58:24,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:24,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:24,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:24,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:24,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:24,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:58:24,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:24,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:24,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:24,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:58:24,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:24,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-26 23:58:24,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:24,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:24,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:24,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:24,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:24,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:58:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:24,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:25,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:25,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:58:25,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:25,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:58:25,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:25,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:25,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:25,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:25,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:25,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:58:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:25,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:25,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:25,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:58:25,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:25,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-26 23:58:25,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:25,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:25,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:25,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:25,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:25,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-26 23:58:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:25,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:25,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:25,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:58:25,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:25,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:58:25,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:25,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:25,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:25,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:25,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:25,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-26 23:58:25,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:25,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:25,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:25,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-26 23:58:25,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:25,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-26 23:58:25,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:25,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:58:25,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:25,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-26 23:58:25,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:25,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-26 23:58:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:25,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:26,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:26,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-26 23:58:26,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:26,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 475 [2020-10-26 23:58:26,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:26,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:26,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:26,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-26 23:58:26,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:26,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1114 [2020-10-26 23:58:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:26,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:26,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:26,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-26 23:58:26,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:26,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:58:26,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:26,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:26,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-26 23:58:26,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:26,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:26,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1226 [2020-10-26 23:58:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:26,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:26,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:26,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-26 23:58:26,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:26,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-26 23:58:26,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:26,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:26,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-10-26 23:58:26,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:26,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:26,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1478 [2020-10-26 23:58:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:26,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:26,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:26,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-26 23:58:26,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:26,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-26 23:58:26,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:26,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:26,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-26 23:58:26,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:26,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:28,791 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 1006 proven. 522 refuted. 0 times theorem prover too weak. 3739 trivial. 0 not checked. [2020-10-26 23:58:28,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853001448] [2020-10-26 23:58:28,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:58:28,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:58:28,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080067230] [2020-10-26 23:58:28,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:58:28,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:58:28,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:58:28,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:58:28,795 INFO L87 Difference]: Start difference. First operand 20150 states and 21309 transitions. Second operand 7 states. [2020-10-26 23:58:33,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:58:33,561 INFO L93 Difference]: Finished difference Result 39626 states and 41947 transitions. [2020-10-26 23:58:33,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:58:33,562 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1655 [2020-10-26 23:58:33,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:58:33,615 INFO L225 Difference]: With dead ends: 39626 [2020-10-26 23:58:33,615 INFO L226 Difference]: Without dead ends: 20162 [2020-10-26 23:58:33,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:58:33,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20162 states. [2020-10-26 23:58:34,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20162 to 19815. [2020-10-26 23:58:34,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19815 states. [2020-10-26 23:58:34,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19815 states to 19815 states and 20953 transitions. [2020-10-26 23:58:34,111 INFO L78 Accepts]: Start accepts. Automaton has 19815 states and 20953 transitions. Word has length 1655 [2020-10-26 23:58:34,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:58:34,113 INFO L481 AbstractCegarLoop]: Abstraction has 19815 states and 20953 transitions. [2020-10-26 23:58:34,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:58:34,113 INFO L276 IsEmpty]: Start isEmpty. Operand 19815 states and 20953 transitions. [2020-10-26 23:58:34,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1761 [2020-10-26 23:58:34,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:58:34,168 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 23:58:34,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 23:58:34,168 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:58:34,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:58:34,169 INFO L82 PathProgramCache]: Analyzing trace with hash 2069474644, now seen corresponding path program 1 times [2020-10-26 23:58:34,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:58:34,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681297999] [2020-10-26 23:58:34,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:58:34,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:34,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:35,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:35,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:36,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:39,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:39,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1792 [2020-10-26 23:58:39,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:58:39,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-26 23:58:39,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:39,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:39,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 726 [2020-10-26 23:58:39,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:58:39,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:39,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:58:39,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:39,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:39,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:39,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:58:39,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:39,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:58:39,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:39,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:39,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:39,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:39,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:39,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:58:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:39,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:40,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:40,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:58:40,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:40,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 23:58:40,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:40,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:40,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:40,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:40,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:40,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:58:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:40,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:40,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:40,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:58:40,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:40,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:58:40,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:40,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:40,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:40,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:40,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:40,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:58:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:40,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:40,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:40,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:58:40,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:40,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:58:40,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:40,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:40,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:40,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:40,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:40,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-26 23:58:40,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:40,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:40,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:40,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:58:40,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:40,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 23:58:40,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:40,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:40,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:40,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:40,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:40,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-26 23:58:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:40,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:40,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:40,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:58:40,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:40,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 23:58:40,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:40,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:58:40,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:40,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-26 23:58:40,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:40,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2020-10-26 23:58:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:40,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:40,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:40,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:58:40,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:40,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-26 23:58:40,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:40,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:40,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:40,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-26 23:58:40,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:40,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-10-26 23:58:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:40,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:40,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:40,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-26 23:58:40,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:40,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-26 23:58:40,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:40,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:40,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 248 [2020-10-26 23:58:40,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:40,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:41,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1081 [2020-10-26 23:58:41,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:41,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:41,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:41,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:58:41,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:41,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:58:41,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:41,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:41,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:58:41,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:41,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:41,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1191 [2020-10-26 23:58:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:41,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:41,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:41,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 23:58:41,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:41,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-26 23:58:41,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:41,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:41,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 23:58:41,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:41,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:41,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1329 [2020-10-26 23:58:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:41,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:41,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:41,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-26 23:58:41,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:41,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-26 23:58:41,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:41,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:41,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-26 23:58:41,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:41,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:58:41,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1583 [2020-10-26 23:58:41,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:41,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:41,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:41,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-26 23:58:41,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:41,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-26 23:58:41,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:41,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:41,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-26 23:58:41,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:41,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:43,194 INFO L134 CoverageAnalysis]: Checked inductivity of 6768 backedges. 752 proven. 557 refuted. 0 times theorem prover too weak. 5459 trivial. 0 not checked. [2020-10-26 23:58:43,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681297999] [2020-10-26 23:58:43,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:58:43,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:58:43,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144143289] [2020-10-26 23:58:43,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:58:43,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:58:43,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:58:43,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:58:43,197 INFO L87 Difference]: Start difference. First operand 19815 states and 20953 transitions. Second operand 7 states. [2020-10-26 23:58:49,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:58:49,563 INFO L93 Difference]: Finished difference Result 42669 states and 45217 transitions. [2020-10-26 23:58:49,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:58:49,564 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1760 [2020-10-26 23:58:49,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:58:49,623 INFO L225 Difference]: With dead ends: 42669 [2020-10-26 23:58:49,623 INFO L226 Difference]: Without dead ends: 23540 [2020-10-26 23:58:49,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:58:49,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23540 states. [2020-10-26 23:58:50,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23540 to 23198. [2020-10-26 23:58:50,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23198 states. [2020-10-26 23:58:50,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23198 states to 23198 states and 24457 transitions. [2020-10-26 23:58:50,329 INFO L78 Accepts]: Start accepts. Automaton has 23198 states and 24457 transitions. Word has length 1760 [2020-10-26 23:58:50,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:58:50,331 INFO L481 AbstractCegarLoop]: Abstraction has 23198 states and 24457 transitions. [2020-10-26 23:58:50,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:58:50,331 INFO L276 IsEmpty]: Start isEmpty. Operand 23198 states and 24457 transitions. [2020-10-26 23:58:50,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1792 [2020-10-26 23:58:50,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:58:50,395 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:58:50,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 23:58:50,395 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:58:50,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:58:50,396 INFO L82 PathProgramCache]: Analyzing trace with hash 412406930, now seen corresponding path program 1 times [2020-10-26 23:58:50,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:58:50,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114382669] [2020-10-26 23:58:50,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:58:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:51,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:51,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking...