/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/Problem15_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:12:17,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:12:17,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:12:17,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:12:17,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:12:17,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:12:17,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:12:17,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:12:17,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:12:17,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:12:17,293 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:12:17,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:12:17,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:12:17,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:12:17,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:12:17,303 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:12:17,305 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:12:17,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:12:17,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:12:17,326 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:12:17,329 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:12:17,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:12:17,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:12:17,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:12:17,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:12:17,346 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:12:17,346 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:12:17,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:12:17,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:12:17,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:12:17,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:12:17,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:12:17,356 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:12:17,357 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:12:17,358 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:12:17,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:12:17,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:12:17,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:12:17,385 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:12:17,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:12:17,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:12:17,391 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 [2020-10-28 13:12:17,433 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:12:17,434 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:12:17,436 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:12:17,436 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:12:17,436 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:12:17,436 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:12:17,437 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:12:17,437 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:12:17,437 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:12:17,437 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:12:17,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:12:17,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:12:17,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:12:17,438 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:12:17,438 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:12:17,439 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:12:17,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:12:17,439 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:12:17,439 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:12:17,440 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:12:17,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:12:17,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:12:17,440 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:12:17,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:12:17,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:12:17,441 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:12:17,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:12:17,441 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:12:17,442 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:12:17,442 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:12:17,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:12:17,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:12:17,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:12:17,903 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:12:17,903 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:12:17,904 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label53.c [2020-10-28 13:12:17,996 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36725cb5b/69a56ecd7a7c47fc9866fe0248b016fe/FLAG03ad52d5e [2020-10-28 13:12:19,054 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:12:19,054 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label53.c [2020-10-28 13:12:19,082 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36725cb5b/69a56ecd7a7c47fc9866fe0248b016fe/FLAG03ad52d5e [2020-10-28 13:12:19,117 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36725cb5b/69a56ecd7a7c47fc9866fe0248b016fe [2020-10-28 13:12:19,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:12:19,131 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:12:19,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:12:19,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:12:19,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:12:19,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:12:19" (1/1) ... [2020-10-28 13:12:19,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@407f7f84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:12:19, skipping insertion in model container [2020-10-28 13:12:19,150 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:12:19" (1/1) ... [2020-10-28 13:12:19,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:12:19,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:12:20,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:12:20,217 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:12:20,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:12:20,561 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:12:20,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:12:20 WrapperNode [2020-10-28 13:12:20,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:12:20,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:12:20,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:12:20,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:12:20,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:12:20" (1/1) ... [2020-10-28 13:12:20,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:12:20" (1/1) ... [2020-10-28 13:12:20,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:12:20" (1/1) ... [2020-10-28 13:12:20,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:12:20" (1/1) ... [2020-10-28 13:12:20,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:12:20" (1/1) ... [2020-10-28 13:12:20,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:12:20" (1/1) ... [2020-10-28 13:12:20,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:12:20" (1/1) ... [2020-10-28 13:12:20,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:12:20,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:12:20,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:12:20,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:12:20,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:12:20" (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 [2020-10-28 13:12:20,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:12:20,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:12:20,892 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:12:20,892 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:12:20,893 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:12:20,893 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:12:20,893 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:12:20,893 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:12:20,894 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:12:20,894 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:12:20,895 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:12:20,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:12:20,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:12:20,896 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:12:20,896 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:12:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:12:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:12:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:12:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:12:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:12:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:12:24,722 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:12:24,723 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:12:24,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:12:24 BoogieIcfgContainer [2020-10-28 13:12:24,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:12:24,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:12:24,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:12:24,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:12:24,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:12:19" (1/3) ... [2020-10-28 13:12:24,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@551a2191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:12:24, skipping insertion in model container [2020-10-28 13:12:24,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:12:20" (2/3) ... [2020-10-28 13:12:24,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@551a2191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:12:24, skipping insertion in model container [2020-10-28 13:12:24,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:12:24" (3/3) ... [2020-10-28 13:12:24,742 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label53.c [2020-10-28 13:12:24,756 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:12:24,762 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:12:24,778 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:12:24,829 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:12:24,829 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:12:24,830 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:12:24,830 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:12:24,830 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:12:24,830 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:12:24,830 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:12:24,830 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:12:24,876 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-28 13:12:24,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-28 13:12:24,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:12:24,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:12:24,890 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:12:24,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:12:24,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1338382857, now seen corresponding path program 1 times [2020-10-28 13:12:24,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:12:24,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174462687] [2020-10-28 13:12:24,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:12:25,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:25,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:25,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:25,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 13:12:25,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:25,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 735 [2020-10-28 13:12:25,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:25,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:25,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:12:25,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:12:25,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-28 13:12:25,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:12:26,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:12:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:26,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:26,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:26,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:12:26,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:26,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 13:12:26,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:26,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:26,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:12:26,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:12:26,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:12:26,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:12:26,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:12:26,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174462687] [2020-10-28 13:12:26,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:12:26,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:12:26,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550102494] [2020-10-28 13:12:26,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:12:26,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:12:26,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:12:26,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:12:26,286 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-28 13:12:34,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:12:34,883 INFO L93 Difference]: Finished difference Result 1204 states and 2170 transitions. [2020-10-28 13:12:34,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:12:34,888 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-10-28 13:12:34,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:12:34,910 INFO L225 Difference]: With dead ends: 1204 [2020-10-28 13:12:34,910 INFO L226 Difference]: Without dead ends: 698 [2020-10-28 13:12:34,927 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 [2020-10-28 13:12:34,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-10-28 13:12:35,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 692. [2020-10-28 13:12:35,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-28 13:12:35,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1013 transitions. [2020-10-28 13:12:35,069 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1013 transitions. Word has length 54 [2020-10-28 13:12:35,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:12:35,070 INFO L481 AbstractCegarLoop]: Abstraction has 692 states and 1013 transitions. [2020-10-28 13:12:35,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:12:35,070 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1013 transitions. [2020-10-28 13:12:35,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-28 13:12:35,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:12:35,077 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:12:35,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:12:35,078 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:12:35,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:12:35,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1181195362, now seen corresponding path program 1 times [2020-10-28 13:12:35,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:12:35,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976635454] [2020-10-28 13:12:35,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:12:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:35,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:35,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:36,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:38,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:38,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-28 13:12:38,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:12:38,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3246 [2020-10-28 13:12:38,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:38,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:38,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:12:38,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:12:38,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:12:38,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:12:38,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:12:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:38,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:38,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:38,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:12:38,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:38,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 13:12:38,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:38,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:38,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:12:38,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:12:38,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:12:38,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-28 13:12:38,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:12:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:38,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:38,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:38,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:12:38,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:38,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-28 13:12:38,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:38,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:38,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:12:38,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:12:38,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:12:38,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:12:39,003 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:12:39,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976635454] [2020-10-28 13:12:39,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:12:39,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:12:39,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826417678] [2020-10-28 13:12:39,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:12:39,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:12:39,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:12:39,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:12:39,013 INFO L87 Difference]: Start difference. First operand 692 states and 1013 transitions. Second operand 7 states. [2020-10-28 13:12:47,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:12:47,414 INFO L93 Difference]: Finished difference Result 1712 states and 2419 transitions. [2020-10-28 13:12:47,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:12:47,417 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-10-28 13:12:47,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:12:47,425 INFO L225 Difference]: With dead ends: 1712 [2020-10-28 13:12:47,426 INFO L226 Difference]: Without dead ends: 1026 [2020-10-28 13:12:47,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:12:47,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2020-10-28 13:12:47,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1015. [2020-10-28 13:12:47,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2020-10-28 13:12:47,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1368 transitions. [2020-10-28 13:12:47,474 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1368 transitions. Word has length 123 [2020-10-28 13:12:47,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:12:47,475 INFO L481 AbstractCegarLoop]: Abstraction has 1015 states and 1368 transitions. [2020-10-28 13:12:47,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:12:47,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1368 transitions. [2020-10-28 13:12:47,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-28 13:12:47,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:12:47,480 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:12:47,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:12:47,481 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:12:47,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:12:47,481 INFO L82 PathProgramCache]: Analyzing trace with hash -143146406, now seen corresponding path program 1 times [2020-10-28 13:12:47,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:12:47,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264441711] [2020-10-28 13:12:47,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:12:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:47,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:47,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:48,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:49,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:49,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-28 13:12:49,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:12:49,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1531 [2020-10-28 13:12:49,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:49,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:49,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:12:49,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:12:49,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 13:12:49,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:49,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:12:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:49,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:49,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:49,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:12:49,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:49,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:12:49,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:49,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:49,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:12:49,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:12:49,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:12:49,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:49,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:12:49,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:49,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:49,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:49,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:12:49,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:49,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-28 13:12:49,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:49,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:49,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:12:49,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:12:49,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:12:49,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:49,460 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:12:49,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1264441711] [2020-10-28 13:12:49,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:12:49,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:12:49,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260739972] [2020-10-28 13:12:49,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:12:49,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:12:49,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:12:49,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:12:49,463 INFO L87 Difference]: Start difference. First operand 1015 states and 1368 transitions. Second operand 7 states. [2020-10-28 13:12:59,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:12:59,654 INFO L93 Difference]: Finished difference Result 2388 states and 3398 transitions. [2020-10-28 13:12:59,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:12:59,658 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2020-10-28 13:12:59,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:12:59,667 INFO L225 Difference]: With dead ends: 2388 [2020-10-28 13:12:59,668 INFO L226 Difference]: Without dead ends: 1686 [2020-10-28 13:12:59,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:12:59,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2020-10-28 13:12:59,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1336. [2020-10-28 13:12:59,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1336 states. [2020-10-28 13:12:59,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 1730 transitions. [2020-10-28 13:12:59,723 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 1730 transitions. Word has length 128 [2020-10-28 13:12:59,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:12:59,724 INFO L481 AbstractCegarLoop]: Abstraction has 1336 states and 1730 transitions. [2020-10-28 13:12:59,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:12:59,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 1730 transitions. [2020-10-28 13:12:59,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-28 13:12:59,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:12:59,730 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:12:59,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:12:59,731 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:12:59,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:12:59,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1776441136, now seen corresponding path program 1 times [2020-10-28 13:12:59,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:12:59,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324814525] [2020-10-28 13:12:59,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:12:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:59,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:59,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:00,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:01,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:01,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:02,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:04,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:04,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-28 13:13:04,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:13:04,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 13:13:04,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:04,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:04,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:13:04,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:13:04,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-28 13:13:04,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:13:04,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:13:04,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:04,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:04,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:04,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:13:04,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:04,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:13:04,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:04,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:04,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:13:04,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:04,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:13:04,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:13:04,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:13:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:04,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:05,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:05,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:13:05,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:05,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-28 13:13:05,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:05,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:05,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:13:05,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:05,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 13:13:05,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 13:13:05,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 13:13:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:05,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:05,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:05,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:05,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 13:13:05,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:13:05,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-28 13:13:05,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:05,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:05,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:13:05,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:13:05,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 13:13:05,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:05,652 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 120 proven. 46 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:13:05,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324814525] [2020-10-28 13:13:05,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:13:05,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:13:05,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570549496] [2020-10-28 13:13:05,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:13:05,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:13:05,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:13:05,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:13:05,655 INFO L87 Difference]: Start difference. First operand 1336 states and 1730 transitions. Second operand 7 states. [2020-10-28 13:13:23,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:13:23,785 INFO L93 Difference]: Finished difference Result 3701 states and 4902 transitions. [2020-10-28 13:13:23,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:13:23,787 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 228 [2020-10-28 13:13:23,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:13:23,806 INFO L225 Difference]: With dead ends: 3701 [2020-10-28 13:13:23,807 INFO L226 Difference]: Without dead ends: 2371 [2020-10-28 13:13:23,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:13:23,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2020-10-28 13:13:23,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 2323. [2020-10-28 13:13:23,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2323 states. [2020-10-28 13:13:23,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 2879 transitions. [2020-10-28 13:13:23,916 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 2879 transitions. Word has length 228 [2020-10-28 13:13:23,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:13:23,918 INFO L481 AbstractCegarLoop]: Abstraction has 2323 states and 2879 transitions. [2020-10-28 13:13:23,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:13:23,919 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 2879 transitions. [2020-10-28 13:13:23,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-28 13:13:23,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:13:23,932 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:13:23,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:13:23,933 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:13:23,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:13:23,933 INFO L82 PathProgramCache]: Analyzing trace with hash -371326493, now seen corresponding path program 1 times [2020-10-28 13:13:23,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:13:23,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124717579] [2020-10-28 13:13:23,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:13:24,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:24,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:24,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:24,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:24,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:25,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:25,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:29,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:29,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-28 13:13:29,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:13:29,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-28 13:13:29,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:29,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:29,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:13:29,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:13:29,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 13:13:29,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:29,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:13:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:29,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:29,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:29,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:13:29,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:29,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:13:29,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:29,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:29,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:13:29,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:29,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:13:29,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:29,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:13:29,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:29,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:29,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:29,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:13:29,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:29,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 13:13:29,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:29,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:29,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:13:29,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:29,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 13:13:29,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:29,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 13:13:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:29,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:29,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:29,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 13:13:29,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:29,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-28 13:13:29,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:29,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:29,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:13:29,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:13:29,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 13:13:29,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:29,793 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:13:29,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124717579] [2020-10-28 13:13:29,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:13:29,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:13:29,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639875934] [2020-10-28 13:13:29,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:13:29,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:13:29,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:13:29,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:13:29,797 INFO L87 Difference]: Start difference. First operand 2323 states and 2879 transitions. Second operand 7 states. [2020-10-28 13:13:41,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:13:41,307 INFO L93 Difference]: Finished difference Result 5659 states and 7231 transitions. [2020-10-28 13:13:41,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:13:41,309 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 272 [2020-10-28 13:13:41,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:13:41,331 INFO L225 Difference]: With dead ends: 5659 [2020-10-28 13:13:41,331 INFO L226 Difference]: Without dead ends: 2983 [2020-10-28 13:13:41,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:13:41,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2020-10-28 13:13:41,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 2931. [2020-10-28 13:13:41,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2931 states. [2020-10-28 13:13:41,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2931 states to 2931 states and 3343 transitions. [2020-10-28 13:13:41,449 INFO L78 Accepts]: Start accepts. Automaton has 2931 states and 3343 transitions. Word has length 272 [2020-10-28 13:13:41,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:13:41,449 INFO L481 AbstractCegarLoop]: Abstraction has 2931 states and 3343 transitions. [2020-10-28 13:13:41,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:13:41,449 INFO L276 IsEmpty]: Start isEmpty. Operand 2931 states and 3343 transitions. [2020-10-28 13:13:41,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-10-28 13:13:41,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:13:41,457 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:13:41,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:13:41,458 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:13:41,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:13:41,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1436519807, now seen corresponding path program 1 times [2020-10-28 13:13:41,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:13:41,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545903690] [2020-10-28 13:13:41,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:13:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:41,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:41,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:43,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:46,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:46,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 353 [2020-10-28 13:13:46,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:13:46,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 13:13:46,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:46,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:46,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:13:46,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:13:46,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-28 13:13:46,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:46,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:13:46,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:46,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:46,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:46,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:13:46,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:46,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 13:13:46,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:46,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:46,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:13:46,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:46,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:13:46,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:46,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:13:46,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:46,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:47,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:47,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:13:47,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:47,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-10-28 13:13:47,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:47,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:47,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:13:47,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:13:47,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:13:47,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:47,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 13:13:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:47,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:47,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:47,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 13:13:47,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:47,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 13:13:47,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:47,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:47,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:13:47,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-28 13:13:47,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:13:47,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:13:47,959 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 92 proven. 80 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:13:47,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545903690] [2020-10-28 13:13:47,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:13:47,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:13:47,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647797451] [2020-10-28 13:13:47,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:13:47,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:13:47,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:13:47,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:13:47,963 INFO L87 Difference]: Start difference. First operand 2931 states and 3343 transitions. Second operand 7 states. [2020-10-28 13:13:56,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:13:56,012 INFO L93 Difference]: Finished difference Result 6225 states and 7081 transitions. [2020-10-28 13:13:56,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:13:56,017 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 339 [2020-10-28 13:13:56,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:13:56,037 INFO L225 Difference]: With dead ends: 6225 [2020-10-28 13:13:56,037 INFO L226 Difference]: Without dead ends: 3304 [2020-10-28 13:13:56,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:13:56,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3304 states. [2020-10-28 13:13:56,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3304 to 3239. [2020-10-28 13:13:56,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3239 states. [2020-10-28 13:13:56,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3239 states to 3239 states and 3655 transitions. [2020-10-28 13:13:56,176 INFO L78 Accepts]: Start accepts. Automaton has 3239 states and 3655 transitions. Word has length 339 [2020-10-28 13:13:56,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:13:56,177 INFO L481 AbstractCegarLoop]: Abstraction has 3239 states and 3655 transitions. [2020-10-28 13:13:56,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:13:56,177 INFO L276 IsEmpty]: Start isEmpty. Operand 3239 states and 3655 transitions. [2020-10-28 13:13:56,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2020-10-28 13:13:56,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:13:56,188 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:13:56,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:13:56,189 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:13:56,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:13:56,190 INFO L82 PathProgramCache]: Analyzing trace with hash -632619638, now seen corresponding path program 1 times [2020-10-28 13:13:56,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:13:56,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694115002] [2020-10-28 13:13:56,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:13:56,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:56,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:57,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:58,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:58,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 427 [2020-10-28 13:13:58,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:13:58,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2486 [2020-10-28 13:13:58,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:58,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:58,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:13:58,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:13:58,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 13:13:58,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:59,055 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:13:59,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:13:59,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:59,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:59,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:59,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:13:59,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:59,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:13:59,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:59,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:59,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:13:59,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:59,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:13:59,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:13:59,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:13:59,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:59,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:59,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:59,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:13:59,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:59,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-10-28 13:13:59,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:59,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:59,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:13:59,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:59,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:13:59,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:13:59,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:13:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:59,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:59,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:59,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 13:13:59,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:59,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-28 13:13:59,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:59,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:59,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:13:59,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:13:59,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:13:59,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:00,361 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:14:00,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694115002] [2020-10-28 13:14:00,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:14:00,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:14:00,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191297144] [2020-10-28 13:14:00,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:14:00,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:14:00,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:14:00,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:14:00,366 INFO L87 Difference]: Start difference. First operand 3239 states and 3655 transitions. Second operand 7 states. [2020-10-28 13:14:09,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:14:09,306 INFO L93 Difference]: Finished difference Result 7828 states and 9109 transitions. [2020-10-28 13:14:09,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:14:09,308 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 413 [2020-10-28 13:14:09,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:14:09,335 INFO L225 Difference]: With dead ends: 7828 [2020-10-28 13:14:09,335 INFO L226 Difference]: Without dead ends: 4902 [2020-10-28 13:14:09,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:14:09,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4902 states. [2020-10-28 13:14:09,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4902 to 4849. [2020-10-28 13:14:09,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4849 states. [2020-10-28 13:14:09,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4849 states to 4849 states and 5400 transitions. [2020-10-28 13:14:09,498 INFO L78 Accepts]: Start accepts. Automaton has 4849 states and 5400 transitions. Word has length 413 [2020-10-28 13:14:09,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:14:09,499 INFO L481 AbstractCegarLoop]: Abstraction has 4849 states and 5400 transitions. [2020-10-28 13:14:09,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:14:09,499 INFO L276 IsEmpty]: Start isEmpty. Operand 4849 states and 5400 transitions. [2020-10-28 13:14:09,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2020-10-28 13:14:09,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:14:09,509 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:14:09,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:14:09,510 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:14:09,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:14:09,511 INFO L82 PathProgramCache]: Analyzing trace with hash -670479736, now seen corresponding path program 1 times [2020-10-28 13:14:09,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:14:09,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458653983] [2020-10-28 13:14:09,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:14:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:09,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:10,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:12,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:12,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 453 [2020-10-28 13:14:12,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:14:12,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2673 [2020-10-28 13:14:12,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:12,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:12,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:14:12,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:14:12,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 13:14:12,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:12,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:14:12,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:12,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:12,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:12,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:14:12,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:12,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:14:12,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:12,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:12,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:12,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:12,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:12,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:12,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:14:12,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:12,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:12,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:12,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:14:12,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:12,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 393 [2020-10-28 13:14:12,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:12,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:12,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:14:12,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:12,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:14:12,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:13,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:14:13,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:13,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:13,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:13,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:14:13,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:13,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-28 13:14:13,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:13,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:13,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:14:13,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:14:13,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:14:13,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:13,975 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:14:13,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458653983] [2020-10-28 13:14:13,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:14:13,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:14:13,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415164080] [2020-10-28 13:14:13,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:14:13,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:14:13,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:14:13,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:14:13,979 INFO L87 Difference]: Start difference. First operand 4849 states and 5400 transitions. Second operand 7 states. [2020-10-28 13:14:24,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:14:24,548 INFO L93 Difference]: Finished difference Result 10357 states and 11514 transitions. [2020-10-28 13:14:24,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:14:24,550 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 439 [2020-10-28 13:14:24,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:14:24,586 INFO L225 Difference]: With dead ends: 10357 [2020-10-28 13:14:24,586 INFO L226 Difference]: Without dead ends: 5821 [2020-10-28 13:14:24,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:14:24,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5821 states. [2020-10-28 13:14:24,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5821 to 5786. [2020-10-28 13:14:24,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5786 states. [2020-10-28 13:14:24,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5786 states to 5786 states and 6357 transitions. [2020-10-28 13:14:24,791 INFO L78 Accepts]: Start accepts. Automaton has 5786 states and 6357 transitions. Word has length 439 [2020-10-28 13:14:24,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:14:24,792 INFO L481 AbstractCegarLoop]: Abstraction has 5786 states and 6357 transitions. [2020-10-28 13:14:24,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:14:24,792 INFO L276 IsEmpty]: Start isEmpty. Operand 5786 states and 6357 transitions. [2020-10-28 13:14:24,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2020-10-28 13:14:24,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:14:24,799 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:14:24,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:14:24,799 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:14:24,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:14:24,800 INFO L82 PathProgramCache]: Analyzing trace with hash -334373376, now seen corresponding path program 1 times [2020-10-28 13:14:24,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:14:24,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684063506] [2020-10-28 13:14:24,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:14:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:25,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:25,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:25,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 465 [2020-10-28 13:14:25,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:25,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 994 [2020-10-28 13:14:25,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:25,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:25,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:14:25,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:14:25,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-28 13:14:25,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:26,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:14:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:26,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:26,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:26,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:14:26,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:26,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:14:26,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:26,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:26,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:26,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:26,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:26,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:14:26,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:14:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:26,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:26,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:26,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:14:26,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:26,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-28 13:14:26,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:26,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:26,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:26,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:26,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:26,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:26,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:14:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:26,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:26,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:26,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:14:26,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:26,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-28 13:14:26,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:26,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:26,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:14:26,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:26,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:14:26,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:14:26,896 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-28 13:14:26,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684063506] [2020-10-28 13:14:26,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:14:26,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:14:26,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468708261] [2020-10-28 13:14:26,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:14:26,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:14:26,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:14:26,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:14:26,899 INFO L87 Difference]: Start difference. First operand 5786 states and 6357 transitions. Second operand 5 states. [2020-10-28 13:14:35,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:14:35,533 INFO L93 Difference]: Finished difference Result 12837 states and 14457 transitions. [2020-10-28 13:14:35,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:14:35,536 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 451 [2020-10-28 13:14:35,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:14:35,582 INFO L225 Difference]: With dead ends: 12837 [2020-10-28 13:14:35,582 INFO L226 Difference]: Without dead ends: 7364 [2020-10-28 13:14:35,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:14:35,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7364 states. [2020-10-28 13:14:35,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7364 to 7351. [2020-10-28 13:14:35,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7351 states. [2020-10-28 13:14:35,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7351 states to 7351 states and 8066 transitions. [2020-10-28 13:14:35,834 INFO L78 Accepts]: Start accepts. Automaton has 7351 states and 8066 transitions. Word has length 451 [2020-10-28 13:14:35,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:14:35,835 INFO L481 AbstractCegarLoop]: Abstraction has 7351 states and 8066 transitions. [2020-10-28 13:14:35,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:14:35,835 INFO L276 IsEmpty]: Start isEmpty. Operand 7351 states and 8066 transitions. [2020-10-28 13:14:35,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2020-10-28 13:14:35,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:14:35,844 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:14:35,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:14:35,844 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:14:35,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:14:35,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1323272238, now seen corresponding path program 1 times [2020-10-28 13:14:35,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:14:35,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708137425] [2020-10-28 13:14:35,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:14:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:36,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:36,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:37,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:38,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:38,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:38,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 568 [2020-10-28 13:14:38,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:14:38,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2972 [2020-10-28 13:14:38,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:38,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:38,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:14:38,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:14:38,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-28 13:14:38,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:39,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:14:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:39,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:39,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:39,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:14:39,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:39,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:14:39,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:39,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:39,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:39,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:39,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:39,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:39,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:14:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:39,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:39,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:39,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:14:39,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:39,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-28 13:14:39,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:39,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:39,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:39,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:39,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:39,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:39,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:14:39,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:39,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:39,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:39,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:14:39,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:39,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 13:14:39,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:39,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:39,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:14:39,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:39,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:14:39,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:39,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:14:39,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:39,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:39,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:40,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:40,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 13:14:40,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:14:40,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-28 13:14:40,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:40,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:40,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:14:40,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:14:40,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 13:14:40,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:40,330 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 290 proven. 47 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-28 13:14:40,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708137425] [2020-10-28 13:14:40,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:14:40,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:14:40,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924955794] [2020-10-28 13:14:40,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:14:40,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:14:40,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:14:40,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:14:40,335 INFO L87 Difference]: Start difference. First operand 7351 states and 8066 transitions. Second operand 6 states. [2020-10-28 13:14:42,386 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:14:50,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:14:50,046 INFO L93 Difference]: Finished difference Result 16009 states and 17920 transitions. [2020-10-28 13:14:50,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:14:50,048 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 552 [2020-10-28 13:14:50,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:14:50,088 INFO L225 Difference]: With dead ends: 16009 [2020-10-28 13:14:50,088 INFO L226 Difference]: Without dead ends: 9260 [2020-10-28 13:14:50,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:14:50,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9260 states. [2020-10-28 13:14:50,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9260 to 8924. [2020-10-28 13:14:50,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8924 states. [2020-10-28 13:14:50,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8924 states to 8924 states and 9814 transitions. [2020-10-28 13:14:50,366 INFO L78 Accepts]: Start accepts. Automaton has 8924 states and 9814 transitions. Word has length 552 [2020-10-28 13:14:50,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:14:50,368 INFO L481 AbstractCegarLoop]: Abstraction has 8924 states and 9814 transitions. [2020-10-28 13:14:50,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:14:50,368 INFO L276 IsEmpty]: Start isEmpty. Operand 8924 states and 9814 transitions. [2020-10-28 13:14:50,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2020-10-28 13:14:50,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:14:50,380 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-28 13:14:50,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:14:50,381 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:14:50,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:14:50,382 INFO L82 PathProgramCache]: Analyzing trace with hash -64900030, now seen corresponding path program 1 times [2020-10-28 13:14:50,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:14:50,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144074223] [2020-10-28 13:14:50,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:14:50,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:50,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:51,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:52,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:54,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:54,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 595 [2020-10-28 13:14:54,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:14:54,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3644 [2020-10-28 13:14:54,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:54,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:54,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:14:54,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:14:54,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-28 13:14:54,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:54,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:14:54,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:54,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:54,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:54,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:14:54,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:54,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:14:54,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:54,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:54,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:54,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:54,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:54,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:54,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:14:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:54,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:54,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:54,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:14:54,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:54,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-28 13:14:54,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:54,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:54,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:54,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:54,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:54,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:54,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:14:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:54,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:54,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:54,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:14:54,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:54,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-28 13:14:54,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:54,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:54,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:14:54,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:54,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:14:54,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:54,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:14:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:54,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:55,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:55,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-28 13:14:55,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:55,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-28 13:14:55,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:55,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:55,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:14:55,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:14:55,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-28 13:14:55,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:55,381 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 376 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:14:55,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144074223] [2020-10-28 13:14:55,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:14:55,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:14:55,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815887072] [2020-10-28 13:14:55,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:14:55,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:14:55,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:14:55,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:14:55,384 INFO L87 Difference]: Start difference. First operand 8924 states and 9814 transitions. Second operand 7 states. [2020-10-28 13:15:08,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:15:08,560 INFO L93 Difference]: Finished difference Result 19737 states and 22167 transitions. [2020-10-28 13:15:08,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:15:08,561 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 579 [2020-10-28 13:15:08,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:15:08,604 INFO L225 Difference]: With dead ends: 19737 [2020-10-28 13:15:08,604 INFO L226 Difference]: Without dead ends: 12356 [2020-10-28 13:15:08,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:15:08,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12356 states. [2020-10-28 13:15:08,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12356 to 11108. [2020-10-28 13:15:08,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11108 states. [2020-10-28 13:15:08,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11108 states to 11108 states and 12411 transitions. [2020-10-28 13:15:08,962 INFO L78 Accepts]: Start accepts. Automaton has 11108 states and 12411 transitions. Word has length 579 [2020-10-28 13:15:08,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:15:08,963 INFO L481 AbstractCegarLoop]: Abstraction has 11108 states and 12411 transitions. [2020-10-28 13:15:08,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:15:08,964 INFO L276 IsEmpty]: Start isEmpty. Operand 11108 states and 12411 transitions. [2020-10-28 13:15:08,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2020-10-28 13:15:08,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:15:08,977 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:15:08,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:15:08,977 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:15:08,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:15:08,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1433493282, now seen corresponding path program 1 times [2020-10-28 13:15:08,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:15:08,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829025943] [2020-10-28 13:15:08,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:15:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:09,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:09,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:09,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:10,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:14,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:14,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 675 [2020-10-28 13:15:14,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:15:14,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 13:15:14,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:14,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:14,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:15:14,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 449 [2020-10-28 13:15:14,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 222 [2020-10-28 13:15:14,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:14,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:15:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:14,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:14,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:14,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:15:14,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:14,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:15:14,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:14,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:14,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:15:14,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:14,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:15:14,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:14,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:15:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:14,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:14,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:14,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-28 13:15:14,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:14,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 13:15:14,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:14,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:14,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:15:14,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:14,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:15:14,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:14,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-28 13:15:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:14,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:14,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:14,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:15:14,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:14,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-28 13:15:14,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:14,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:14,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:15:14,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:14,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-28 13:15:14,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:14,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2020-10-28 13:15:14,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:14,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:15,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:15,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:15,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-28 13:15:15,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:15:15,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 428 [2020-10-28 13:15:15,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:15,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:15,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:15:15,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:15,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-28 13:15:15,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:15,789 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 144 proven. 3 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2020-10-28 13:15:15,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829025943] [2020-10-28 13:15:15,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:15:15,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:15:15,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530465691] [2020-10-28 13:15:15,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:15:15,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:15:15,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:15:15,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:15:15,792 INFO L87 Difference]: Start difference. First operand 11108 states and 12411 transitions. Second operand 5 states. [2020-10-28 13:15:22,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:15:22,030 INFO L93 Difference]: Finished difference Result 22212 states and 25010 transitions. [2020-10-28 13:15:22,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:15:22,032 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 659 [2020-10-28 13:15:22,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:15:22,075 INFO L225 Difference]: With dead ends: 22212 [2020-10-28 13:15:22,076 INFO L226 Difference]: Without dead ends: 12647 [2020-10-28 13:15:22,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:15:22,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12647 states. [2020-10-28 13:15:22,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12647 to 11415. [2020-10-28 13:15:22,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11415 states. [2020-10-28 13:15:22,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11415 states to 11415 states and 12768 transitions. [2020-10-28 13:15:22,374 INFO L78 Accepts]: Start accepts. Automaton has 11415 states and 12768 transitions. Word has length 659 [2020-10-28 13:15:22,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:15:22,375 INFO L481 AbstractCegarLoop]: Abstraction has 11415 states and 12768 transitions. [2020-10-28 13:15:22,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:15:22,375 INFO L276 IsEmpty]: Start isEmpty. Operand 11415 states and 12768 transitions. [2020-10-28 13:15:22,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2020-10-28 13:15:22,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:15:22,394 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:15:22,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:15:22,395 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:15:22,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:15:22,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1708280335, now seen corresponding path program 1 times [2020-10-28 13:15:22,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:15:22,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629177387] [2020-10-28 13:15:22,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:15:22,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:22,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:23,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:24,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:27,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:27,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 746 [2020-10-28 13:15:27,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:15:27,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4665 [2020-10-28 13:15:27,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:27,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:27,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:15:27,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 491 [2020-10-28 13:15:27,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 13:15:27,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:27,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:15:27,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:27,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:27,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:27,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:15:27,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:27,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:15:27,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:27,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:27,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:15:27,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:27,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:15:27,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:27,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:15:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:27,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:27,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:27,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:15:27,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:27,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-28 13:15:27,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:27,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:27,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:15:27,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:27,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:15:27,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:27,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:15:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:27,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:27,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:27,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 13:15:27,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:27,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-28 13:15:27,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:27,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:27,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:15:27,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:27,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-28 13:15:27,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:28,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-28 13:15:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:28,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:28,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:28,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:15:28,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:28,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-28 13:15:28,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:28,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:28,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:15:28,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:15:28,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:15:28,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-10-28 13:15:28,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2020-10-28 13:15:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:28,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:28,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:28,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:15:28,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:28,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 13:15:28,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:28,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:28,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:15:28,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:15:28,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:15:28,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:28,769 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 351 proven. 79 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2020-10-28 13:15:28,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629177387] [2020-10-28 13:15:28,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:15:28,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:15:28,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653979309] [2020-10-28 13:15:28,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:15:28,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:15:28,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:15:28,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:15:28,771 INFO L87 Difference]: Start difference. First operand 11415 states and 12768 transitions. Second operand 7 states. [2020-10-28 13:15:39,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:15:39,054 INFO L93 Difference]: Finished difference Result 28763 states and 32509 transitions. [2020-10-28 13:15:39,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:15:39,057 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 728 [2020-10-28 13:15:39,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:15:39,117 INFO L225 Difference]: With dead ends: 28763 [2020-10-28 13:15:39,117 INFO L226 Difference]: Without dead ends: 17661 [2020-10-28 13:15:39,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:15:39,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17661 states. [2020-10-28 13:15:39,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17661 to 17328. [2020-10-28 13:15:39,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17328 states. [2020-10-28 13:15:39,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17328 states to 17328 states and 19257 transitions. [2020-10-28 13:15:39,599 INFO L78 Accepts]: Start accepts. Automaton has 17328 states and 19257 transitions. Word has length 728 [2020-10-28 13:15:39,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:15:39,601 INFO L481 AbstractCegarLoop]: Abstraction has 17328 states and 19257 transitions. [2020-10-28 13:15:39,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:15:39,601 INFO L276 IsEmpty]: Start isEmpty. Operand 17328 states and 19257 transitions. [2020-10-28 13:15:39,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 741 [2020-10-28 13:15:39,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:15:39,623 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:15:39,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:15:39,624 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:15:39,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:15:39,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1382178725, now seen corresponding path program 1 times [2020-10-28 13:15:39,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:15:39,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597935343] [2020-10-28 13:15:39,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:15:39,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:39,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:40,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:41,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:42,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:42,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 758 [2020-10-28 13:15:42,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:15:42,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2607 [2020-10-28 13:15:42,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:42,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:42,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:15:42,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 585 [2020-10-28 13:15:42,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-28 13:15:42,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:42,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:15:42,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:42,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:42,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:42,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:15:42,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:42,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:15:42,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:42,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:42,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:15:42,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:42,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:15:42,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:42,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:15:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:42,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:42,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:42,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:15:42,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:42,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 13:15:42,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:42,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:42,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:15:42,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:42,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:15:42,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:42,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:15:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:42,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:42,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:42,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:15:42,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:42,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:15:42,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:42,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:42,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:15:42,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:42,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:15:42,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:42,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:15:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:42,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:43,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:43,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-28 13:15:43,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:43,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-28 13:15:43,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:43,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:43,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:15:43,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:43,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-28 13:15:43,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:43,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2020-10-28 13:15:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:43,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:43,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:43,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:15:43,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:43,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-28 13:15:43,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:43,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:43,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:15:43,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:15:43,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 13:15:43,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:43,746 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 526 proven. 2 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2020-10-28 13:15:43,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597935343] [2020-10-28 13:15:43,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:15:43,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:15:43,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592993028] [2020-10-28 13:15:43,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:15:43,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:15:43,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:15:43,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:15:43,749 INFO L87 Difference]: Start difference. First operand 17328 states and 19257 transitions. Second operand 7 states. [2020-10-28 13:15:53,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:15:53,290 INFO L93 Difference]: Finished difference Result 39048 states and 44099 transitions. [2020-10-28 13:15:53,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:15:53,292 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 740 [2020-10-28 13:15:53,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:15:53,368 INFO L225 Difference]: With dead ends: 39048 [2020-10-28 13:15:53,368 INFO L226 Difference]: Without dead ends: 23877 [2020-10-28 13:15:53,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:15:53,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23877 states.