/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=DEEPEST --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_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 18:36:08,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 18:36:08,842 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 18:36:08,902 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 18:36:08,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 18:36:08,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 18:36:08,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 18:36:08,919 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 18:36:08,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 18:36:08,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 18:36:08,931 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 18:36:08,933 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 18:36:08,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 18:36:08,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 18:36:08,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 18:36:08,945 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 18:36:08,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 18:36:08,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 18:36:08,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 18:36:08,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 18:36:08,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 18:36:08,965 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 18:36:08,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 18:36:08,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 18:36:08,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 18:36:08,981 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 18:36:08,982 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 18:36:08,983 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 18:36:08,984 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 18:36:08,985 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 18:36:08,985 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 18:36:08,988 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 18:36:08,990 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 18:36:08,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 18:36:08,992 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 18:36:08,992 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 18:36:08,993 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 18:36:08,993 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 18:36:08,993 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 18:36:08,994 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 18:36:08,995 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 18:36:09,003 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 [2020-10-27 18:36:09,057 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 18:36:09,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 18:36:09,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 18:36:09,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 18:36:09,063 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 18:36:09,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 18:36:09,063 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 18:36:09,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 18:36:09,064 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 18:36:09,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 18:36:09,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 18:36:09,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 18:36:09,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 18:36:09,066 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 18:36:09,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 18:36:09,066 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 18:36:09,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 18:36:09,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 18:36:09,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 18:36:09,067 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 18:36:09,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 18:36:09,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:36:09,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 18:36:09,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 18:36:09,068 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 18:36:09,068 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 18:36:09,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 18:36:09,069 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 18:36:09,069 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 18:36:09,069 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 18:36:09,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 18:36:09,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 18:36:09,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 18:36:09,561 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 18:36:09,562 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 18:36:09,563 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label05.c [2020-10-27 18:36:09,643 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d49c15e2/1c3261ffb3b64af9829e9713bbf39c8b/FLAG256454667 [2020-10-27 18:36:10,492 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 18:36:10,493 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label05.c [2020-10-27 18:36:10,517 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d49c15e2/1c3261ffb3b64af9829e9713bbf39c8b/FLAG256454667 [2020-10-27 18:36:10,603 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d49c15e2/1c3261ffb3b64af9829e9713bbf39c8b [2020-10-27 18:36:10,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 18:36:10,616 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 18:36:10,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 18:36:10,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 18:36:10,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 18:36:10,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:36:10" (1/1) ... [2020-10-27 18:36:10,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3de45a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:36:10, skipping insertion in model container [2020-10-27 18:36:10,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:36:10" (1/1) ... [2020-10-27 18:36:10,643 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 18:36:10,729 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 18:36:11,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:36:11,623 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 18:36:11,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:36:11,976 INFO L208 MainTranslator]: Completed translation [2020-10-27 18:36:11,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:36:11 WrapperNode [2020-10-27 18:36:11,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 18:36:11,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 18:36:11,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 18:36:11,979 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 18:36:11,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:36:11" (1/1) ... [2020-10-27 18:36:11,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:36:11" (1/1) ... [2020-10-27 18:36:12,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:36:11" (1/1) ... [2020-10-27 18:36:12,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:36:11" (1/1) ... [2020-10-27 18:36:12,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:36:11" (1/1) ... [2020-10-27 18:36:12,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:36:11" (1/1) ... [2020-10-27 18:36:12,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:36:11" (1/1) ... [2020-10-27 18:36:12,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 18:36:12,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 18:36:12,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 18:36:12,219 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 18:36:12,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:36:11" (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 [2020-10-27 18:36:12,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 18:36:12,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 18:36:12,308 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 18:36:12,309 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 18:36:12,309 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 18:36:12,309 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 18:36:12,310 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 18:36:12,310 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 18:36:12,310 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 18:36:12,311 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 18:36:12,312 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 18:36:12,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 18:36:12,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 18:36:12,312 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 18:36:12,312 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 18:36:12,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 18:36:12,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 18:36:12,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 18:36:12,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 18:36:12,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 18:36:12,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 18:36:15,084 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 18:36:15,085 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 18:36:15,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:36:15 BoogieIcfgContainer [2020-10-27 18:36:15,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 18:36:15,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 18:36:15,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 18:36:15,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 18:36:15,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:36:10" (1/3) ... [2020-10-27 18:36:15,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6b1fcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:36:15, skipping insertion in model container [2020-10-27 18:36:15,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:36:11" (2/3) ... [2020-10-27 18:36:15,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6b1fcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:36:15, skipping insertion in model container [2020-10-27 18:36:15,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:36:15" (3/3) ... [2020-10-27 18:36:15,097 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label05.c [2020-10-27 18:36:15,110 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 18:36:15,116 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 18:36:15,131 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 18:36:15,164 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 18:36:15,165 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 18:36:15,165 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 18:36:15,165 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 18:36:15,165 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 18:36:15,165 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 18:36:15,166 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 18:36:15,166 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 18:36:15,194 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-27 18:36:15,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 18:36:15,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:36:15,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:36:15,202 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:36:15,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:36:15,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1612006268, now seen corresponding path program 1 times [2020-10-27 18:36:15,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:36:15,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794869010] [2020-10-27 18:36:15,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:36:15,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:15,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:15,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:15,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 18:36:15,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:15,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 568 [2020-10-27 18:36:15,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:15,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:36:15,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:36:15,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 18:36:15,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 18:36:16,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:36:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:16,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:16,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:16,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:36:16,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:16,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 18:36:16,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:16,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:36:16,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:16,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:36:16,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:36:16,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:36:16,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794869010] [2020-10-27 18:36:16,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:36:16,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 18:36:16,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529295154] [2020-10-27 18:36:16,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 18:36:16,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:36:16,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 18:36:16,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 18:36:16,248 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-27 18:36:20,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:36:20,896 INFO L93 Difference]: Finished difference Result 1174 states and 2171 transitions. [2020-10-27 18:36:20,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:36:20,898 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-27 18:36:20,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:36:20,937 INFO L225 Difference]: With dead ends: 1174 [2020-10-27 18:36:20,938 INFO L226 Difference]: Without dead ends: 697 [2020-10-27 18:36:20,951 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 [2020-10-27 18:36:20,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-27 18:36:21,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 690. [2020-10-27 18:36:21,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-10-27 18:36:21,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1078 transitions. [2020-10-27 18:36:21,099 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1078 transitions. Word has length 26 [2020-10-27 18:36:21,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:36:21,100 INFO L481 AbstractCegarLoop]: Abstraction has 690 states and 1078 transitions. [2020-10-27 18:36:21,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 18:36:21,100 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1078 transitions. [2020-10-27 18:36:21,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 18:36:21,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:36:21,105 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:36:21,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 18:36:21,106 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:36:21,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:36:21,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1937786658, now seen corresponding path program 1 times [2020-10-27 18:36:21,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:36:21,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781452314] [2020-10-27 18:36:21,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:36:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:21,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:21,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:22,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:22,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:36:22,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:36:22,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1215 [2020-10-27 18:36:22,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:22,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:36:22,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-27 18:36:22,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 18:36:22,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:36:22,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:36:22,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:22,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:22,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:22,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:36:22,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:22,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 18:36:22,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:22,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:22,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:22,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:22,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:36:22,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:36:22,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:22,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:22,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:22,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 18:36:22,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:22,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-27 18:36:22,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:22,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:36:22,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:22,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 18:36:22,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:22,764 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:36:22,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781452314] [2020-10-27 18:36:22,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:36:22,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 18:36:22,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929947943] [2020-10-27 18:36:22,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:36:22,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:36:22,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:36:22,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:36:22,769 INFO L87 Difference]: Start difference. First operand 690 states and 1078 transitions. Second operand 6 states. [2020-10-27 18:36:28,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:36:28,885 INFO L93 Difference]: Finished difference Result 2746 states and 4357 transitions. [2020-10-27 18:36:28,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:36:28,886 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-10-27 18:36:28,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:36:28,900 INFO L225 Difference]: With dead ends: 2746 [2020-10-27 18:36:28,900 INFO L226 Difference]: Without dead ends: 2062 [2020-10-27 18:36:28,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:36:28,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2062 states. [2020-10-27 18:36:28,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2062 to 2058. [2020-10-27 18:36:28,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2058 states. [2020-10-27 18:36:28,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2058 states to 2058 states and 2928 transitions. [2020-10-27 18:36:28,980 INFO L78 Accepts]: Start accepts. Automaton has 2058 states and 2928 transitions. Word has length 101 [2020-10-27 18:36:28,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:36:28,981 INFO L481 AbstractCegarLoop]: Abstraction has 2058 states and 2928 transitions. [2020-10-27 18:36:28,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:36:28,981 INFO L276 IsEmpty]: Start isEmpty. Operand 2058 states and 2928 transitions. [2020-10-27 18:36:28,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-27 18:36:28,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:36:28,991 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:36:28,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 18:36:28,991 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:36:28,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:36:28,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1627198314, now seen corresponding path program 1 times [2020-10-27 18:36:28,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:36:28,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481657361] [2020-10-27 18:36:28,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:36:29,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:29,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:29,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:29,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:30,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:30,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:31,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:31,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-27 18:36:31,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:36:31,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2829 [2020-10-27 18:36:31,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:31,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:36:31,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-10-27 18:36:31,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 18:36:31,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:31,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:36:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:31,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:32,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:32,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:36:32,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:32,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:36:32,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:32,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:32,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:32,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:32,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:32,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:36:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:32,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:32,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:32,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:36:32,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:32,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 18:36:32,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:32,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:32,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:32,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:32,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:32,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:36:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:32,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:32,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:32,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 18:36:32,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:32,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 18:36:32,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:32,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:36:32,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:32,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 18:36:32,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:36:32,303 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-27 18:36:32,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481657361] [2020-10-27 18:36:32,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:36:32,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:36:32,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940375945] [2020-10-27 18:36:32,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:36:32,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:36:32,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:36:32,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:36:32,306 INFO L87 Difference]: Start difference. First operand 2058 states and 2928 transitions. Second operand 5 states. [2020-10-27 18:36:38,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:36:38,760 INFO L93 Difference]: Finished difference Result 5482 states and 7911 transitions. [2020-10-27 18:36:38,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:36:38,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-10-27 18:36:38,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:36:38,785 INFO L225 Difference]: With dead ends: 5482 [2020-10-27 18:36:38,785 INFO L226 Difference]: Without dead ends: 3430 [2020-10-27 18:36:38,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:36:38,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3430 states. [2020-10-27 18:36:38,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3430 to 3089. [2020-10-27 18:36:38,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3089 states. [2020-10-27 18:36:38,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3089 states to 3089 states and 4339 transitions. [2020-10-27 18:36:38,903 INFO L78 Accepts]: Start accepts. Automaton has 3089 states and 4339 transitions. Word has length 189 [2020-10-27 18:36:38,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:36:38,905 INFO L481 AbstractCegarLoop]: Abstraction has 3089 states and 4339 transitions. [2020-10-27 18:36:38,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:36:38,905 INFO L276 IsEmpty]: Start isEmpty. Operand 3089 states and 4339 transitions. [2020-10-27 18:36:38,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-27 18:36:38,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:36:38,913 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:36:38,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 18:36:38,914 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:36:38,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:36:38,914 INFO L82 PathProgramCache]: Analyzing trace with hash -92395772, now seen corresponding path program 1 times [2020-10-27 18:36:38,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:36:38,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009691463] [2020-10-27 18:36:38,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:36:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:39,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:39,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:39,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:39,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:44,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:44,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-27 18:36:44,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:36:44,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 18:36:44,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:44,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:36:44,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 256 [2020-10-27 18:36:44,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 18:36:44,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:36:44,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:36:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:44,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:44,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:44,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:36:44,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:44,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:36:44,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:44,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:44,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:44,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:44,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:44,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:36:44,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:44,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:44,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:44,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 18:36:44,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:44,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 18:36:44,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:44,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:44,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:44,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:44,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:44,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 18:36:44,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:44,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:44,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:44,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 18:36:44,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:44,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-27 18:36:44,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:44,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:36:44,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:44,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-27 18:36:44,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:44,562 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-27 18:36:44,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009691463] [2020-10-27 18:36:44,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:36:44,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:36:44,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97876484] [2020-10-27 18:36:44,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:36:44,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:36:44,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:36:44,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:36:44,565 INFO L87 Difference]: Start difference. First operand 3089 states and 4339 transitions. Second operand 5 states. [2020-10-27 18:36:50,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:36:50,486 INFO L93 Difference]: Finished difference Result 8219 states and 11744 transitions. [2020-10-27 18:36:50,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:36:50,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 270 [2020-10-27 18:36:50,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:36:50,523 INFO L225 Difference]: With dead ends: 8219 [2020-10-27 18:36:50,523 INFO L226 Difference]: Without dead ends: 5136 [2020-10-27 18:36:50,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:36:50,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5136 states. [2020-10-27 18:36:50,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5136 to 5132. [2020-10-27 18:36:50,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5132 states. [2020-10-27 18:36:50,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5132 states to 5132 states and 6849 transitions. [2020-10-27 18:36:50,681 INFO L78 Accepts]: Start accepts. Automaton has 5132 states and 6849 transitions. Word has length 270 [2020-10-27 18:36:50,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:36:50,682 INFO L481 AbstractCegarLoop]: Abstraction has 5132 states and 6849 transitions. [2020-10-27 18:36:50,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:36:50,682 INFO L276 IsEmpty]: Start isEmpty. Operand 5132 states and 6849 transitions. [2020-10-27 18:36:50,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-10-27 18:36:50,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:36:50,689 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-27 18:36:50,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 18:36:50,690 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:36:50,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:36:50,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1426410460, now seen corresponding path program 1 times [2020-10-27 18:36:50,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:36:50,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222644161] [2020-10-27 18:36:50,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:36:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:50,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:50,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:50,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:53,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:55,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:55,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-10-27 18:36:55,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:36:55,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 18:36:55,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:55,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:36:55,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-10-27 18:36:55,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 18:36:55,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:55,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:36:55,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:55,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:55,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:55,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:36:55,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:55,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:36:55,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:55,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:55,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:55,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:55,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:55,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:36:55,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:55,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:55,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:55,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:36:55,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:55,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 18:36:55,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:55,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:55,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:55,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:55,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 18:36:55,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:36:55,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:56,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:56,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:56,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 18:36:56,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:56,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-27 18:36:56,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:56,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:36:56,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:56,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 18:36:56,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:56,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-27 18:36:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:56,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:56,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:56,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:56,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 18:36:56,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:36:56,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-10-27 18:36:56,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:56,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:36:56,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:36:56,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 18:36:56,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:56,695 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 212 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-27 18:36:56,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222644161] [2020-10-27 18:36:56,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:36:56,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:36:56,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462176249] [2020-10-27 18:36:56,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:36:56,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:36:56,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:36:56,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:36:56,699 INFO L87 Difference]: Start difference. First operand 5132 states and 6849 transitions. Second operand 7 states. [2020-10-27 18:37:04,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:37:04,585 INFO L93 Difference]: Finished difference Result 13747 states and 19031 transitions. [2020-10-27 18:37:04,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:37:04,586 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 276 [2020-10-27 18:37:04,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:37:04,643 INFO L225 Difference]: With dead ends: 13747 [2020-10-27 18:37:04,643 INFO L226 Difference]: Without dead ends: 8278 [2020-10-27 18:37:04,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:37:04,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8278 states. [2020-10-27 18:37:04,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8278 to 8274. [2020-10-27 18:37:04,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8274 states. [2020-10-27 18:37:04,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8274 states to 8274 states and 11011 transitions. [2020-10-27 18:37:04,946 INFO L78 Accepts]: Start accepts. Automaton has 8274 states and 11011 transitions. Word has length 276 [2020-10-27 18:37:04,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:37:04,947 INFO L481 AbstractCegarLoop]: Abstraction has 8274 states and 11011 transitions. [2020-10-27 18:37:04,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:37:04,947 INFO L276 IsEmpty]: Start isEmpty. Operand 8274 states and 11011 transitions. [2020-10-27 18:37:04,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-27 18:37:04,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:37:04,960 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:37:04,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 18:37:04,961 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:37:04,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:37:04,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1651137942, now seen corresponding path program 1 times [2020-10-27 18:37:04,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:37:04,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584673659] [2020-10-27 18:37:04,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:37:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:05,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:05,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:05,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:06,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:06,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:09,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:09,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-27 18:37:09,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:37:09,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4282 [2020-10-27 18:37:09,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:09,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:37:09,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 303 [2020-10-27 18:37:09,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 18:37:09,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:09,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:37:09,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:09,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:09,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:09,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:37:09,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:09,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:37:09,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:09,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:09,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:09,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:09,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:09,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:37:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:09,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:09,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:09,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:37:09,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:09,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 18:37:09,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:09,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:09,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:09,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:09,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:09,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:37:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:09,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:09,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:09,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-27 18:37:09,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:09,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-27 18:37:09,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:09,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:37:09,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:09,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-27 18:37:09,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:09,894 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-27 18:37:09,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584673659] [2020-10-27 18:37:09,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:37:09,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:37:09,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677174468] [2020-10-27 18:37:09,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:37:09,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:37:09,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:37:09,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:37:09,898 INFO L87 Difference]: Start difference. First operand 8274 states and 11011 transitions. Second operand 5 states. [2020-10-27 18:37:16,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:37:16,071 INFO L93 Difference]: Finished difference Result 20652 states and 28187 transitions. [2020-10-27 18:37:16,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:37:16,073 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 317 [2020-10-27 18:37:16,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:37:16,154 INFO L225 Difference]: With dead ends: 20652 [2020-10-27 18:37:16,154 INFO L226 Difference]: Without dead ends: 12384 [2020-10-27 18:37:16,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:37:16,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12384 states. [2020-10-27 18:37:16,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12384 to 12380. [2020-10-27 18:37:16,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12380 states. [2020-10-27 18:37:16,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12380 states to 12380 states and 16246 transitions. [2020-10-27 18:37:16,567 INFO L78 Accepts]: Start accepts. Automaton has 12380 states and 16246 transitions. Word has length 317 [2020-10-27 18:37:16,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:37:16,568 INFO L481 AbstractCegarLoop]: Abstraction has 12380 states and 16246 transitions. [2020-10-27 18:37:16,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:37:16,568 INFO L276 IsEmpty]: Start isEmpty. Operand 12380 states and 16246 transitions. [2020-10-27 18:37:16,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-27 18:37:16,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:37:16,591 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:37:16,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 18:37:16,591 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:37:16,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:37:16,592 INFO L82 PathProgramCache]: Analyzing trace with hash -11013268, now seen corresponding path program 1 times [2020-10-27 18:37:16,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:37:16,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358670246] [2020-10-27 18:37:16,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:37:16,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:16,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:16,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:17,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:18,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:18,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 390 [2020-10-27 18:37:18,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:37:18,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1779 [2020-10-27 18:37:18,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:18,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:37:18,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-27 18:37:18,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 18:37:18,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:18,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:37:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:18,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:18,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:18,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:37:18,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:18,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:37:18,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:18,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:18,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:18,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:18,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:37:18,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:37:18,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:18,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:18,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:18,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:37:18,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:18,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 18:37:18,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:18,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:37:18,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:18,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 18:37:18,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:18,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:37:18,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:18,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:18,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:19,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:19,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-27 18:37:19,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:37:19,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 511 [2020-10-27 18:37:19,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:19,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:37:19,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:37:19,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 260 [2020-10-27 18:37:19,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:20,379 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 18:37:20,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358670246] [2020-10-27 18:37:20,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:37:20,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 18:37:20,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145076026] [2020-10-27 18:37:20,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:37:20,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:37:20,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:37:20,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:37:20,382 INFO L87 Difference]: Start difference. First operand 12380 states and 16246 transitions. Second operand 6 states. [2020-10-27 18:37:24,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:37:24,399 INFO L93 Difference]: Finished difference Result 24963 states and 32919 transitions. [2020-10-27 18:37:24,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:37:24,401 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 376 [2020-10-27 18:37:24,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:37:24,461 INFO L225 Difference]: With dead ends: 24963 [2020-10-27 18:37:24,462 INFO L226 Difference]: Without dead ends: 12435 [2020-10-27 18:37:24,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-27 18:37:24,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12435 states. [2020-10-27 18:37:24,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12435 to 12373. [2020-10-27 18:37:24,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12373 states. [2020-10-27 18:37:24,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12373 states to 12373 states and 15679 transitions. [2020-10-27 18:37:24,954 INFO L78 Accepts]: Start accepts. Automaton has 12373 states and 15679 transitions. Word has length 376 [2020-10-27 18:37:24,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:37:24,954 INFO L481 AbstractCegarLoop]: Abstraction has 12373 states and 15679 transitions. [2020-10-27 18:37:24,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:37:24,955 INFO L276 IsEmpty]: Start isEmpty. Operand 12373 states and 15679 transitions. [2020-10-27 18:37:24,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-10-27 18:37:24,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:37:24,973 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:37:24,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 18:37:24,973 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:37:24,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:37:24,974 INFO L82 PathProgramCache]: Analyzing trace with hash 2085607256, now seen corresponding path program 1 times [2020-10-27 18:37:24,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:37:24,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127606160] [2020-10-27 18:37:24,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:37:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:25,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:25,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:25,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:27,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:30,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:30,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 402 [2020-10-27 18:37:30,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:37:30,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 18:37:30,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:30,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:37:30,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 374 [2020-10-27 18:37:30,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 18:37:30,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:30,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:37:30,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:30,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:30,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:30,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:37:30,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:30,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:37:30,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:30,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:30,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:30,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:30,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:30,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:37:30,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:30,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:30,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:30,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 18:37:30,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:30,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 18:37:30,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:30,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:30,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:30,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:30,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:37:30,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 18:37:30,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:30,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:30,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:30,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-27 18:37:30,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:30,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-27 18:37:30,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:30,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:37:30,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:30,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 257 [2020-10-27 18:37:30,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:30,771 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-27 18:37:30,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127606160] [2020-10-27 18:37:30,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:37:30,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:37:30,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014860190] [2020-10-27 18:37:30,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:37:30,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:37:30,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:37:30,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:37:30,773 INFO L87 Difference]: Start difference. First operand 12373 states and 15679 transitions. Second operand 5 states. [2020-10-27 18:37:35,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:37:35,271 INFO L93 Difference]: Finished difference Result 27081 states and 34709 transitions. [2020-10-27 18:37:35,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:37:35,272 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 388 [2020-10-27 18:37:35,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:37:35,357 INFO L225 Difference]: With dead ends: 27081 [2020-10-27 18:37:35,358 INFO L226 Difference]: Without dead ends: 14742 [2020-10-27 18:37:35,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:37:35,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14742 states. [2020-10-27 18:37:35,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14742 to 14738. [2020-10-27 18:37:35,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14738 states. [2020-10-27 18:37:35,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14738 states to 14738 states and 18452 transitions. [2020-10-27 18:37:35,922 INFO L78 Accepts]: Start accepts. Automaton has 14738 states and 18452 transitions. Word has length 388 [2020-10-27 18:37:35,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:37:35,923 INFO L481 AbstractCegarLoop]: Abstraction has 14738 states and 18452 transitions. [2020-10-27 18:37:35,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:37:35,923 INFO L276 IsEmpty]: Start isEmpty. Operand 14738 states and 18452 transitions. [2020-10-27 18:37:35,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2020-10-27 18:37:35,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:37:35,944 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:37:35,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 18:37:35,945 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:37:35,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:37:35,945 INFO L82 PathProgramCache]: Analyzing trace with hash -234235628, now seen corresponding path program 1 times [2020-10-27 18:37:35,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:37:35,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520808336] [2020-10-27 18:37:35,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:37:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:36,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:36,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:38,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:40,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:41,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:41,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 410 [2020-10-27 18:37:41,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:37:41,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 18:37:41,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:41,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:37:41,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-27 18:37:41,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 18:37:41,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:41,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:37:41,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:41,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:41,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:41,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:37:41,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:41,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:37:41,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:41,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:41,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:41,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:41,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:41,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:37:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:41,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:41,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:41,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 18:37:41,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:41,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 18:37:41,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:41,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:37:41,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:41,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 18:37:41,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:41,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-27 18:37:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:41,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:41,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:41,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:41,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-27 18:37:41,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:37:41,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 661 [2020-10-27 18:37:41,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:41,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:37:41,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:37:41,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 260 [2020-10-27 18:37:41,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:43,140 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 18:37:43,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520808336] [2020-10-27 18:37:43,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:37:43,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 18:37:43,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822130690] [2020-10-27 18:37:43,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 18:37:43,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:37:43,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 18:37:43,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 18:37:43,143 INFO L87 Difference]: Start difference. First operand 14738 states and 18452 transitions. Second operand 10 states. [2020-10-27 18:37:43,484 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2020-10-27 18:37:43,693 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2020-10-27 18:37:44,049 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2020-10-27 18:37:44,214 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 71 [2020-10-27 18:37:45,246 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2020-10-27 18:37:45,532 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2020-10-27 18:37:46,334 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2020-10-27 18:37:49,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:37:49,612 INFO L93 Difference]: Finished difference Result 25152 states and 31619 transitions. [2020-10-27 18:37:49,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 18:37:49,614 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 396 [2020-10-27 18:37:49,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:37:49,650 INFO L225 Difference]: With dead ends: 25152 [2020-10-27 18:37:49,650 INFO L226 Difference]: Without dead ends: 10187 [2020-10-27 18:37:49,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2020-10-27 18:37:49,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10187 states. [2020-10-27 18:37:49,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10187 to 9914. [2020-10-27 18:37:49,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9914 states. [2020-10-27 18:37:49,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9914 states to 9914 states and 11341 transitions. [2020-10-27 18:37:49,889 INFO L78 Accepts]: Start accepts. Automaton has 9914 states and 11341 transitions. Word has length 396 [2020-10-27 18:37:49,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:37:49,890 INFO L481 AbstractCegarLoop]: Abstraction has 9914 states and 11341 transitions. [2020-10-27 18:37:49,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 18:37:49,890 INFO L276 IsEmpty]: Start isEmpty. Operand 9914 states and 11341 transitions. [2020-10-27 18:37:49,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2020-10-27 18:37:49,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:37:49,908 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:37:49,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 18:37:49,908 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:37:49,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:37:49,909 INFO L82 PathProgramCache]: Analyzing trace with hash 9333806, now seen corresponding path program 1 times [2020-10-27 18:37:49,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:37:49,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377775870] [2020-10-27 18:37:49,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:37:50,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:50,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:50,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:50,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:52,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:52,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:52,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:55,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:55,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 491 [2020-10-27 18:37:55,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:37:55,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 18:37:55,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:55,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:37:55,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 463 [2020-10-27 18:37:55,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 18:37:55,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:55,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:37:55,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:55,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:55,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:55,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:37:55,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:55,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:37:55,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:55,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:55,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:55,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:55,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:55,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:37:55,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:55,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:55,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:55,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 18:37:55,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:55,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 18:37:55,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:55,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:55,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:55,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:55,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:55,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 18:37:55,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:55,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:55,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:55,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-27 18:37:55,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:55,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 18:37:55,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:55,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:55,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:55,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:55,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:55,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-10-27 18:37:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:55,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:55,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:55,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 18:37:55,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:55,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 18:37:55,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:55,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:37:55,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:55,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 18:37:55,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:55,659 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 57 proven. 3 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2020-10-27 18:37:55,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377775870] [2020-10-27 18:37:55,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:37:55,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:37:55,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075645570] [2020-10-27 18:37:55,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:37:55,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:37:55,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:37:55,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:37:55,662 INFO L87 Difference]: Start difference. First operand 9914 states and 11341 transitions. Second operand 5 states. [2020-10-27 18:37:59,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:37:59,364 INFO L93 Difference]: Finished difference Result 22200 states and 25590 transitions. [2020-10-27 18:37:59,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:37:59,365 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 475 [2020-10-27 18:37:59,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:37:59,402 INFO L225 Difference]: With dead ends: 22200 [2020-10-27 18:37:59,402 INFO L226 Difference]: Without dead ends: 12292 [2020-10-27 18:37:59,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:37:59,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12292 states. [2020-10-27 18:37:59,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12292 to 12288. [2020-10-27 18:37:59,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12288 states. [2020-10-27 18:37:59,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12288 states to 12288 states and 13959 transitions. [2020-10-27 18:37:59,779 INFO L78 Accepts]: Start accepts. Automaton has 12288 states and 13959 transitions. Word has length 475 [2020-10-27 18:37:59,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:37:59,780 INFO L481 AbstractCegarLoop]: Abstraction has 12288 states and 13959 transitions. [2020-10-27 18:37:59,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:37:59,780 INFO L276 IsEmpty]: Start isEmpty. Operand 12288 states and 13959 transitions. [2020-10-27 18:37:59,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2020-10-27 18:37:59,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:37:59,816 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:37:59,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 18:37:59,817 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:37:59,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:37:59,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1160532458, now seen corresponding path program 1 times [2020-10-27 18:37:59,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:37:59,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669541857] [2020-10-27 18:37:59,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:37:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:59,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:00,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:00,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:00,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:04,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:04,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:04,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 589 [2020-10-27 18:38:04,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:38:04,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 18:38:04,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:04,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:38:04,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 227 [2020-10-27 18:38:04,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 335 [2020-10-27 18:38:04,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:05,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:38:05,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:05,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:05,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:05,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:38:05,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:05,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:38:05,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:05,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:38:05,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:05,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:38:05,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:05,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:38:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:05,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:05,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:05,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 18:38:05,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:05,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 18:38:05,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:05,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:38:05,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:05,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:38:05,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:05,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 18:38:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:05,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:05,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:05,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:38:05,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:05,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 18:38:05,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:05,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:38:05,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:05,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 18:38:05,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:05,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-27 18:38:05,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:05,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:05,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:05,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:05,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 18:38:05,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:38:05,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-27 18:38:05,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:05,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:38:05,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:38:05,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 18:38:05,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:05,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-27 18:38:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:05,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:05,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:05,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-27 18:38:05,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:05,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 393 [2020-10-27 18:38:05,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:05,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:38:05,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:38:05,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 260 [2020-10-27 18:38:05,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:06,182 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 490 proven. 4 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-27 18:38:06,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669541857] [2020-10-27 18:38:06,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:38:06,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 18:38:06,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449174103] [2020-10-27 18:38:06,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 18:38:06,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:38:06,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 18:38:06,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-27 18:38:06,185 INFO L87 Difference]: Start difference. First operand 12288 states and 13959 transitions. Second operand 9 states. [2020-10-27 18:38:12,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:38:12,126 INFO L93 Difference]: Finished difference Result 28664 states and 32814 transitions. [2020-10-27 18:38:12,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 18:38:12,127 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 571 [2020-10-27 18:38:12,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:38:12,177 INFO L225 Difference]: With dead ends: 28664 [2020-10-27 18:38:12,177 INFO L226 Difference]: Without dead ends: 16382 [2020-10-27 18:38:12,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-10-27 18:38:12,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16382 states. [2020-10-27 18:38:12,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16382 to 15030. [2020-10-27 18:38:12,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15030 states. [2020-10-27 18:38:12,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15030 states to 15030 states and 16604 transitions. [2020-10-27 18:38:12,527 INFO L78 Accepts]: Start accepts. Automaton has 15030 states and 16604 transitions. Word has length 571 [2020-10-27 18:38:12,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:38:12,528 INFO L481 AbstractCegarLoop]: Abstraction has 15030 states and 16604 transitions. [2020-10-27 18:38:12,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 18:38:12,528 INFO L276 IsEmpty]: Start isEmpty. Operand 15030 states and 16604 transitions. [2020-10-27 18:38:12,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2020-10-27 18:38:12,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:38:12,553 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:38:12,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 18:38:12,553 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:38:12,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:38:12,554 INFO L82 PathProgramCache]: Analyzing trace with hash -878352656, now seen corresponding path program 1 times [2020-10-27 18:38:12,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:38:12,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733228692] [2020-10-27 18:38:12,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:38:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:12,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:12,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:12,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:14,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:17,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:17,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 628 [2020-10-27 18:38:17,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:38:17,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-27 18:38:17,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:17,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:38:17,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 227 [2020-10-27 18:38:17,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 18:38:17,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:17,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:38:17,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:17,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:17,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:17,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:38:17,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:17,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:38:17,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:17,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:38:17,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:17,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:38:17,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:17,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:38:17,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:17,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:17,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:17,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 18:38:17,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:17,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 18:38:17,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:17,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:38:17,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:17,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:38:17,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:17,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 18:38:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:17,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:17,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:17,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:38:17,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:17,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-27 18:38:17,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:17,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:38:17,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:17,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 18:38:17,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:18,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-27 18:38:18,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:18,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:18,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:18,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:38:18,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:18,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-27 18:38:18,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:18,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:38:18,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:38:18,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 18:38:18,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:18,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-10-27 18:38:18,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:18,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:18,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:18,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-27 18:38:18,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:18,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 18:38:18,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:18,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:38:18,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-27 18:38:18,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:38:18,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:18,724 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 289 proven. 109 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2020-10-27 18:38:18,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733228692] [2020-10-27 18:38:18,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:38:18,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:38:18,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051714432] [2020-10-27 18:38:18,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:38:18,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:38:18,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:38:18,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:38:18,727 INFO L87 Difference]: Start difference. First operand 15030 states and 16604 transitions. Second operand 7 states. [2020-10-27 18:38:23,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:38:23,061 INFO L93 Difference]: Finished difference Result 32104 states and 35754 transitions. [2020-10-27 18:38:23,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:38:23,062 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 610 [2020-10-27 18:38:23,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:38:23,112 INFO L225 Difference]: With dead ends: 32104 [2020-10-27 18:38:23,113 INFO L226 Difference]: Without dead ends: 17084 [2020-10-27 18:38:23,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:38:23,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17084 states. [2020-10-27 18:38:23,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17084 to 15387. [2020-10-27 18:38:23,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15387 states. [2020-10-27 18:38:23,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15387 states to 15387 states and 16871 transitions. [2020-10-27 18:38:23,457 INFO L78 Accepts]: Start accepts. Automaton has 15387 states and 16871 transitions. Word has length 610 [2020-10-27 18:38:23,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:38:23,458 INFO L481 AbstractCegarLoop]: Abstraction has 15387 states and 16871 transitions. [2020-10-27 18:38:23,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:38:23,458 INFO L276 IsEmpty]: Start isEmpty. Operand 15387 states and 16871 transitions. [2020-10-27 18:38:23,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 675 [2020-10-27 18:38:23,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:38:23,476 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:38:23,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 18:38:23,476 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:38:23,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:38:23,477 INFO L82 PathProgramCache]: Analyzing trace with hash 324788752, now seen corresponding path program 1 times [2020-10-27 18:38:23,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:38:23,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891631040] [2020-10-27 18:38:23,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:38:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:23,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:23,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:23,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:25,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:28,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:28,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 692 [2020-10-27 18:38:28,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:38:28,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 18:38:28,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:28,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:38:28,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 291 [2020-10-27 18:38:28,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 18:38:28,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:28,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:38:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:28,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:28,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:28,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:38:28,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:28,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:38:28,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:28,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:38:28,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:28,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:38:28,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:28,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:38:28,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:28,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:28,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:28,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 18:38:28,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:28,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 18:38:28,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:28,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:38:28,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:28,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:38:28,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:28,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 18:38:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:28,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:28,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:28,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 18:38:28,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:28,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 18:38:28,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:28,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:38:28,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:28,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-27 18:38:28,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:28,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-10-27 18:38:28,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:28,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:29,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:29,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:38:29,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:29,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 18:38:29,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:29,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:38:29,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:38:29,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 18:38:29,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:29,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2020-10-27 18:38:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:29,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:29,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:29,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-27 18:38:29,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:29,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-27 18:38:29,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:29,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:38:29,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-27 18:38:29,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:38:29,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:29,623 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 299 proven. 109 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2020-10-27 18:38:29,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891631040] [2020-10-27 18:38:29,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:38:29,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:38:29,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561884722] [2020-10-27 18:38:29,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:38:29,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:38:29,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:38:29,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:38:29,625 INFO L87 Difference]: Start difference. First operand 15387 states and 16871 transitions. Second operand 7 states. [2020-10-27 18:38:33,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:38:33,945 INFO L93 Difference]: Finished difference Result 30434 states and 33408 transitions. [2020-10-27 18:38:33,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:38:33,946 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 674 [2020-10-27 18:38:33,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:38:33,986 INFO L225 Difference]: With dead ends: 30434 [2020-10-27 18:38:33,986 INFO L226 Difference]: Without dead ends: 15053 [2020-10-27 18:38:34,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:38:34,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15053 states. [2020-10-27 18:38:34,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15053 to 15043. [2020-10-27 18:38:34,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15043 states. [2020-10-27 18:38:34,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15043 states to 15043 states and 16150 transitions. [2020-10-27 18:38:34,282 INFO L78 Accepts]: Start accepts. Automaton has 15043 states and 16150 transitions. Word has length 674 [2020-10-27 18:38:34,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:38:34,283 INFO L481 AbstractCegarLoop]: Abstraction has 15043 states and 16150 transitions. [2020-10-27 18:38:34,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:38:34,283 INFO L276 IsEmpty]: Start isEmpty. Operand 15043 states and 16150 transitions. [2020-10-27 18:38:34,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2020-10-27 18:38:34,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:38:34,305 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 18:38:34,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 18:38:34,305 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:38:34,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:38:34,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1383204620, now seen corresponding path program 1 times [2020-10-27 18:38:34,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:38:34,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919922414] [2020-10-27 18:38:34,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:38:34,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:34,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:34,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:34,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:36,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:39,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:39,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 836 [2020-10-27 18:38:39,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:38:39,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 18:38:39,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:39,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:38:39,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 435 [2020-10-27 18:38:39,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 18:38:39,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:39,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:38:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:39,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:39,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:39,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:38:39,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:39,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:38:39,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:39,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:38:39,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:39,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:38:39,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:39,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:38:39,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:39,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:39,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:39,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 18:38:39,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:39,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 18:38:39,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:39,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:38:39,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:39,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:38:39,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:39,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 18:38:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:39,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:39,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:39,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 18:38:39,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:39,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 18:38:39,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:39,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:38:39,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:39,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:38:39,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:39,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-10-27 18:38:39,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:39,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:39,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:39,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 18:38:39,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:39,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 18:38:39,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:39,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:38:39,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:39,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-27 18:38:39,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:39,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-10-27 18:38:39,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:39,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:39,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:39,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:38:39,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:39,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 18:38:39,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:39,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:38:39,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:38:39,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 18:38:39,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:39,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2020-10-27 18:38:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:40,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:40,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:40,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-27 18:38:40,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:40,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-27 18:38:40,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:40,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:38:40,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-27 18:38:40,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:38:40,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:40,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1363 backedges. 433 proven. 109 refuted. 0 times theorem prover too weak. 821 trivial. 0 not checked. [2020-10-27 18:38:40,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919922414] [2020-10-27 18:38:40,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:38:40,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:38:40,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129018690] [2020-10-27 18:38:40,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:38:40,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:38:40,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:38:40,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:38:40,746 INFO L87 Difference]: Start difference. First operand 15043 states and 16150 transitions. Second operand 7 states. [2020-10-27 18:38:45,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:38:45,644 INFO L93 Difference]: Finished difference Result 33701 states and 37120 transitions. [2020-10-27 18:38:45,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 18:38:45,646 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 816 [2020-10-27 18:38:45,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:38:45,713 INFO L225 Difference]: With dead ends: 33701 [2020-10-27 18:38:45,714 INFO L226 Difference]: Without dead ends: 18664 [2020-10-27 18:38:45,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-27 18:38:45,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18664 states. [2020-10-27 18:38:46,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18664 to 18105. [2020-10-27 18:38:46,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18105 states. [2020-10-27 18:38:46,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18105 states to 18105 states and 19431 transitions. [2020-10-27 18:38:46,142 INFO L78 Accepts]: Start accepts. Automaton has 18105 states and 19431 transitions. Word has length 816 [2020-10-27 18:38:46,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:38:46,143 INFO L481 AbstractCegarLoop]: Abstraction has 18105 states and 19431 transitions. [2020-10-27 18:38:46,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:38:46,143 INFO L276 IsEmpty]: Start isEmpty. Operand 18105 states and 19431 transitions. [2020-10-27 18:38:46,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 896 [2020-10-27 18:38:46,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:38:46,170 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:38:46,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 18:38:46,171 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:38:46,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:38:46,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1517341014, now seen corresponding path program 1 times [2020-10-27 18:38:46,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:38:46,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376244824] [2020-10-27 18:38:46,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:38:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:46,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:46,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:46,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:46,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:51,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:51,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:51,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 915 [2020-10-27 18:38:51,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:38:51,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 18:38:51,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:51,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:38:51,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 514 [2020-10-27 18:38:51,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 18:38:51,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:51,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:38:51,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:51,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:51,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:51,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:38:51,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:51,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 18:38:51,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:51,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:38:51,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:51,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:38:51,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:51,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:38:51,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:51,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:51,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:51,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 18:38:51,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:51,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 18:38:51,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:51,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:38:51,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:51,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:38:51,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:51,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 18:38:51,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:51,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:51,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:51,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:38:51,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:51,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 18:38:51,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:51,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:38:51,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:51,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:38:51,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:51,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-10-27 18:38:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:51,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:51,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:51,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-27 18:38:51,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:51,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-27 18:38:51,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:51,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:38:51,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:51,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 245 [2020-10-27 18:38:51,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:51,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2020-10-27 18:38:51,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:51,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:52,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:52,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:38:52,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:52,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 18:38:52,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:52,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:38:52,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:38:52,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 18:38:52,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:52,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 618 [2020-10-27 18:38:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:52,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:52,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:52,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-27 18:38:52,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:52,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-27 18:38:52,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:52,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:38:52,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-27 18:38:52,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:38:52,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:52,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 433 proven. 109 refuted. 0 times theorem prover too weak. 853 trivial. 0 not checked. [2020-10-27 18:38:52,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376244824] [2020-10-27 18:38:52,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:38:52,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:38:52,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37910176] [2020-10-27 18:38:52,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:38:52,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:38:52,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:38:52,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:38:52,932 INFO L87 Difference]: Start difference. First operand 18105 states and 19431 transitions. Second operand 7 states. [2020-10-27 18:38:57,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:38:57,534 INFO L93 Difference]: Finished difference Result 38137 states and 41848 transitions. [2020-10-27 18:38:57,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 18:38:57,535 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 895 [2020-10-27 18:38:57,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:38:57,601 INFO L225 Difference]: With dead ends: 38137 [2020-10-27 18:38:57,601 INFO L226 Difference]: Without dead ends: 20038 [2020-10-27 18:38:57,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-27 18:38:57,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20038 states. [2020-10-27 18:38:58,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20038 to 19798. [2020-10-27 18:38:58,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19798 states. [2020-10-27 18:38:58,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19798 states to 19798 states and 21142 transitions. [2020-10-27 18:38:58,042 INFO L78 Accepts]: Start accepts. Automaton has 19798 states and 21142 transitions. Word has length 895 [2020-10-27 18:38:58,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:38:58,043 INFO L481 AbstractCegarLoop]: Abstraction has 19798 states and 21142 transitions. [2020-10-27 18:38:58,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:38:58,043 INFO L276 IsEmpty]: Start isEmpty. Operand 19798 states and 21142 transitions. [2020-10-27 18:38:58,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 973 [2020-10-27 18:38:58,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:38:58,073 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:38:58,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 18:38:58,074 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:38:58,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:38:58,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1739192752, now seen corresponding path program 1 times [2020-10-27 18:38:58,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:38:58,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780359507] [2020-10-27 18:38:58,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:38:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:58,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:58,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:58,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:03,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:03,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 994 [2020-10-27 18:39:03,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:39:03,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-27 18:39:03,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:03,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:39:03,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 590 [2020-10-27 18:39:03,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 18:39:03,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:03,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:39:03,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:03,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:03,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:03,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:39:03,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:03,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:39:03,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:03,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:39:03,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:03,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:39:03,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:03,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:39:03,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:03,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:03,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:03,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 18:39:03,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:03,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 18:39:03,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:03,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:39:03,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:03,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:39:03,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:03,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 18:39:03,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:03,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:03,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:03,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:39:03,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:03,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 18:39:03,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:03,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:39:03,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:03,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:39:03,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:03,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-10-27 18:39:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:03,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:03,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:03,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-27 18:39:03,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:03,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-27 18:39:03,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:03,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:39:03,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:03,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 321 [2020-10-27 18:39:03,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:03,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:39:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:03,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:04,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:04,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 18:39:04,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:04,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-27 18:39:04,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:04,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:39:04,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:04,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 18:39:04,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:04,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 585 [2020-10-27 18:39:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:04,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:04,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:04,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:39:04,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:04,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 18:39:04,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:04,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:39:04,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:39:04,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 18:39:04,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:04,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 695 [2020-10-27 18:39:04,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:04,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:04,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:04,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-27 18:39:04,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:04,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 18:39:04,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:04,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:39:04,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-27 18:39:04,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:39:04,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:05,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 433 proven. 109 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked. [2020-10-27 18:39:05,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [780359507] [2020-10-27 18:39:05,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:39:05,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:39:05,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500780086] [2020-10-27 18:39:05,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:39:05,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:39:05,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:39:05,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:39:05,140 INFO L87 Difference]: Start difference. First operand 19798 states and 21142 transitions. Second operand 7 states. [2020-10-27 18:39:11,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:39:11,331 INFO L93 Difference]: Finished difference Result 40859 states and 44310 transitions. [2020-10-27 18:39:11,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:39:11,334 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 972 [2020-10-27 18:39:11,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:39:11,380 INFO L225 Difference]: With dead ends: 40859 [2020-10-27 18:39:11,380 INFO L226 Difference]: Without dead ends: 21067 [2020-10-27 18:39:11,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:39:11,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21067 states. [2020-10-27 18:39:11,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21067 to 20823. [2020-10-27 18:39:11,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20823 states. [2020-10-27 18:39:11,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20823 states to 20823 states and 22199 transitions. [2020-10-27 18:39:11,906 INFO L78 Accepts]: Start accepts. Automaton has 20823 states and 22199 transitions. Word has length 972 [2020-10-27 18:39:11,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:39:11,907 INFO L481 AbstractCegarLoop]: Abstraction has 20823 states and 22199 transitions. [2020-10-27 18:39:11,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:39:11,907 INFO L276 IsEmpty]: Start isEmpty. Operand 20823 states and 22199 transitions. [2020-10-27 18:39:11,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1043 [2020-10-27 18:39:11,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:39:11,937 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:39:11,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 18:39:11,938 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:39:11,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:39:11,938 INFO L82 PathProgramCache]: Analyzing trace with hash -276392960, now seen corresponding path program 1 times [2020-10-27 18:39:11,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:39:11,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721211676] [2020-10-27 18:39:11,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:39:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:12,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:12,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:12,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:16,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:17,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:17,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1064 [2020-10-27 18:39:17,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:39:17,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5128 [2020-10-27 18:39:17,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:17,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:39:17,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 775 [2020-10-27 18:39:17,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 262 [2020-10-27 18:39:17,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:17,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:39:17,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:17,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:17,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:17,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:39:17,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:17,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:39:17,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:17,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:39:17,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:17,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:39:17,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:17,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:39:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:17,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:17,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:17,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 18:39:17,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:17,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 18:39:17,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:17,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:39:17,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:17,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:39:17,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:17,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 18:39:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:17,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:17,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:17,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-27 18:39:17,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:17,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 18:39:17,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:17,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:39:17,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:17,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:39:17,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:17,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-10-27 18:39:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:17,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:17,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:17,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:39:17,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:17,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:39:17,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:17,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:39:17,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:17,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:39:17,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:17,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-10-27 18:39:17,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:17,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:17,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:17,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 18:39:17,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:17,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 18:39:17,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:17,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:39:17,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:17,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:39:17,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:17,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 655 [2020-10-27 18:39:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:17,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:17,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:17,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:39:17,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:17,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 18:39:17,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:17,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:39:17,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:17,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 18:39:17,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:17,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 765 [2020-10-27 18:39:18,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:18,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:18,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:18,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-27 18:39:18,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:18,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-27 18:39:18,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:18,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:39:18,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:39:18,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 260 [2020-10-27 18:39:18,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:18,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1888 backedges. 853 proven. 2 refuted. 0 times theorem prover too weak. 1033 trivial. 0 not checked. [2020-10-27 18:39:18,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721211676] [2020-10-27 18:39:18,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:39:18,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:39:18,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912275705] [2020-10-27 18:39:18,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:39:18,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:39:18,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:39:18,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:39:18,987 INFO L87 Difference]: Start difference. First operand 20823 states and 22199 transitions. Second operand 7 states. [2020-10-27 18:39:23,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:39:23,747 INFO L93 Difference]: Finished difference Result 41355 states and 44169 transitions. [2020-10-27 18:39:23,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:39:23,748 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1042 [2020-10-27 18:39:23,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:39:23,788 INFO L225 Difference]: With dead ends: 41355 [2020-10-27 18:39:23,788 INFO L226 Difference]: Without dead ends: 20879 [2020-10-27 18:39:23,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:39:23,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20879 states. [2020-10-27 18:39:24,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20879 to 18476. [2020-10-27 18:39:24,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18476 states. [2020-10-27 18:39:24,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18476 states to 18476 states and 19333 transitions. [2020-10-27 18:39:24,112 INFO L78 Accepts]: Start accepts. Automaton has 18476 states and 19333 transitions. Word has length 1042 [2020-10-27 18:39:24,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:39:24,114 INFO L481 AbstractCegarLoop]: Abstraction has 18476 states and 19333 transitions. [2020-10-27 18:39:24,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:39:24,114 INFO L276 IsEmpty]: Start isEmpty. Operand 18476 states and 19333 transitions. [2020-10-27 18:39:24,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1243 [2020-10-27 18:39:24,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:39:24,141 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:39:24,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 18:39:24,141 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:39:24,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:39:24,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1903434956, now seen corresponding path program 1 times [2020-10-27 18:39:24,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:39:24,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867270646] [2020-10-27 18:39:24,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:39:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:24,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:24,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:24,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:24,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:29,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:29,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1266 [2020-10-27 18:39:29,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:39:29,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5173 [2020-10-27 18:39:29,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:29,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:39:29,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 582 [2020-10-27 18:39:29,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 18:39:29,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:29,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:39:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:29,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:29,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:29,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:39:29,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:29,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:39:29,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:29,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:39:29,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:29,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:39:29,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:29,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:39:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:29,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:29,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:29,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 18:39:29,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:29,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 18:39:29,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:29,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:39:29,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:29,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:39:29,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:29,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 18:39:29,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:29,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:29,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:29,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 18:39:29,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:29,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 18:39:29,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:29,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:39:29,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:29,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:39:29,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:29,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-27 18:39:29,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:30,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:30,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:30,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:39:30,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:30,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-27 18:39:30,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:30,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:39:30,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:30,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-27 18:39:30,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:30,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2020-10-27 18:39:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:30,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:30,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:30,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 18:39:30,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:30,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 18:39:30,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:30,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:39:30,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:39:30,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 18:39:30,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:30,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 647 [2020-10-27 18:39:30,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:30,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:30,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:30,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-27 18:39:30,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:30,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-27 18:39:30,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:30,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:39:30,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-27 18:39:30,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:39:30,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:30,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 901 [2020-10-27 18:39:30,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:30,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:30,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:30,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-27 18:39:30,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:30,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-27 18:39:30,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:30,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:39:30,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-10-27 18:39:30,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:39:30,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:30,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:39:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:30,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:30,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:30,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 18:39:30,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:30,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 18:39:30,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:30,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:39:30,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:30,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:39:30,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:31,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2229 backedges. 346 proven. 138 refuted. 0 times theorem prover too weak. 1745 trivial. 0 not checked. [2020-10-27 18:39:31,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867270646] [2020-10-27 18:39:31,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:39:31,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:39:31,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856002321] [2020-10-27 18:39:31,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:39:31,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:39:31,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:39:31,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:39:31,970 INFO L87 Difference]: Start difference. First operand 18476 states and 19333 transitions. Second operand 7 states.