/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/recursive-simple/id_i5_o5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 17:24:54,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:24:54,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:24:54,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:24:54,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:24:54,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:24:54,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:24:54,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:24:54,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:24:54,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:24:54,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:24:54,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:24:54,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:24:54,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:24:54,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:24:54,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:24:54,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:24:54,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:24:54,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:24:54,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:24:54,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:24:54,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:24:54,422 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:24:54,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:24:54,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:24:54,434 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:24:54,434 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:24:54,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:24:54,437 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:24:54,438 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:24:54,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:24:54,440 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:24:54,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:24:54,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:24:54,444 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:24:54,444 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:24:54,445 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:24:54,445 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:24:54,445 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:24:54,446 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:24:54,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:24:54,456 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 17:24:54,506 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:24:54,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:24:54,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:24:54,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:24:54,509 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:24:54,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:24:54,509 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:24:54,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:24:54,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:24:54,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:24:54,510 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:24:54,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:24:54,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:24:54,511 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:24:54,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:24:54,512 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:24:54,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:24:54,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:24:54,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:24:54,513 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:24:54,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:24:54,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:24:54,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:24:54,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:24:54,514 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:24:54,514 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:24:54,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:24:54,515 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:24:54,515 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:24:54,515 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:24:54,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:24:54,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:24:54,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:24:54,909 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:24:54,910 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:24:54,911 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i5_o5-2.c [2020-10-28 17:24:54,984 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d8b592e2/a309cb5a7df84ab8851ec4f81b2fc48c/FLAG9d85ffbda [2020-10-28 17:24:55,646 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:24:55,647 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_i5_o5-2.c [2020-10-28 17:24:55,655 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d8b592e2/a309cb5a7df84ab8851ec4f81b2fc48c/FLAG9d85ffbda [2020-10-28 17:24:56,027 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d8b592e2/a309cb5a7df84ab8851ec4f81b2fc48c [2020-10-28 17:24:56,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:24:56,041 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:24:56,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:24:56,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:24:56,051 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:24:56,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:24:56" (1/1) ... [2020-10-28 17:24:56,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@795720d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:24:56, skipping insertion in model container [2020-10-28 17:24:56,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:24:56" (1/1) ... [2020-10-28 17:24:56,065 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:24:56,082 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:24:56,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:24:56,340 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:24:56,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:24:56,380 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:24:56,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:24:56 WrapperNode [2020-10-28 17:24:56,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:24:56,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:24:56,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:24:56,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:24:56,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:24:56" (1/1) ... [2020-10-28 17:24:56,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:24:56" (1/1) ... [2020-10-28 17:24:56,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:24:56" (1/1) ... [2020-10-28 17:24:56,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:24:56" (1/1) ... [2020-10-28 17:24:56,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:24:56" (1/1) ... [2020-10-28 17:24:56,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:24:56" (1/1) ... [2020-10-28 17:24:56,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:24:56" (1/1) ... [2020-10-28 17:24:56,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:24:56,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:24:56,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:24:56,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:24:56,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:24:56" (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 17:24:56,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:24:56,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:24:56,521 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:24:56,521 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-10-28 17:24:56,521 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:24:56,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 17:24:56,522 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:24:56,522 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:24:56,522 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:24:56,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:24:56,522 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-10-28 17:24:56,523 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:24:56,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:24:56,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:24:56,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:24:56,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:24:56,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:24:56,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:24:56,761 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:24:56,761 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 17:24:56,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:24:56 BoogieIcfgContainer [2020-10-28 17:24:56,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:24:56,765 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:24:56,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:24:56,770 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:24:56,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:24:56" (1/3) ... [2020-10-28 17:24:56,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a8748cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:24:56, skipping insertion in model container [2020-10-28 17:24:56,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:24:56" (2/3) ... [2020-10-28 17:24:56,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a8748cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:24:56, skipping insertion in model container [2020-10-28 17:24:56,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:24:56" (3/3) ... [2020-10-28 17:24:56,774 INFO L111 eAbstractionObserver]: Analyzing ICFG id_i5_o5-2.c [2020-10-28 17:24:56,788 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:24:56,793 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:24:56,826 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:24:56,887 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:24:56,888 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:24:56,888 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:24:56,888 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:24:56,888 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:24:56,888 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:24:56,889 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:24:56,889 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:24:56,930 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-28 17:24:56,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-28 17:24:56,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:24:56,937 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:24:56,938 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:24:56,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:24:56,945 INFO L82 PathProgramCache]: Analyzing trace with hash 560135365, now seen corresponding path program 1 times [2020-10-28 17:24:56,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:24:56,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468445642] [2020-10-28 17:24:56,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:24:57,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:57,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:57,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:57,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:24:57,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:57,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-10-28 17:24:57,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:57,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:57,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:24:57,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:24:57,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:24:57,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:24:57,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:24:57,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:57,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:57,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:57,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:24:57,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:57,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:24:57,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:57,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:57,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:24:57,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:24:57,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:24:57,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:24:57,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:24:57,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:57,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:57,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:57,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:24:57,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:57,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:24:57,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:57,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:57,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:24:57,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:24:57,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:24:57,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:24:57,641 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 17:24:57,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468445642] [2020-10-28 17:24:57,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:24:57,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 17:24:57,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492796217] [2020-10-28 17:24:57,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:24:57,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:24:57,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:24:57,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:24:57,668 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 6 states. [2020-10-28 17:24:57,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:24:57,944 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2020-10-28 17:24:57,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:24:57,946 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-28 17:24:57,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:24:57,956 INFO L225 Difference]: With dead ends: 36 [2020-10-28 17:24:57,956 INFO L226 Difference]: Without dead ends: 20 [2020-10-28 17:24:57,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:24:57,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-28 17:24:58,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-28 17:24:58,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-28 17:24:58,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-10-28 17:24:58,009 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 15 [2020-10-28 17:24:58,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:24:58,010 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-10-28 17:24:58,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:24:58,010 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-10-28 17:24:58,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-28 17:24:58,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:24:58,013 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:24:58,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:24:58,013 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:24:58,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:24:58,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1295611761, now seen corresponding path program 1 times [2020-10-28 17:24:58,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:24:58,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987835125] [2020-10-28 17:24:58,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:24:58,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:58,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:58,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:58,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 17:24:58,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:58,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-28 17:24:58,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:58,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:58,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:24:58,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:24:58,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:24:58,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:24:58,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:24:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:58,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:58,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:58,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:24:58,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:58,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:24:58,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:58,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:58,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:24:58,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:24:58,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:24:58,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:24:58,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:24:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:58,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:58,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:58,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 17:24:58,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:58,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 17:24:58,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:58,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:58,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:24:58,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:24:58,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:24:58,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:24:58,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:24:58,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:58,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:58,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:58,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:24:58,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:58,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:24:58,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:58,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:58,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:24:58,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:24:58,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:24:58,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:24:58,468 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 17:24:58,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987835125] [2020-10-28 17:24:58,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:24:58,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 17:24:58,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829843464] [2020-10-28 17:24:58,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:24:58,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:24:58,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:24:58,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:24:58,473 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 8 states. [2020-10-28 17:24:58,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:24:58,742 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-10-28 17:24:58,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 17:24:58,743 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-10-28 17:24:58,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:24:58,744 INFO L225 Difference]: With dead ends: 28 [2020-10-28 17:24:58,745 INFO L226 Difference]: Without dead ends: 23 [2020-10-28 17:24:58,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:24:58,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-28 17:24:58,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-28 17:24:58,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-28 17:24:58,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-10-28 17:24:58,755 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 21 [2020-10-28 17:24:58,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:24:58,755 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-10-28 17:24:58,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:24:58,756 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-10-28 17:24:58,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 17:24:58,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:24:58,757 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:24:58,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 17:24:58,757 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:24:58,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:24:58,758 INFO L82 PathProgramCache]: Analyzing trace with hash -116387003, now seen corresponding path program 2 times [2020-10-28 17:24:58,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:24:58,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995331153] [2020-10-28 17:24:58,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:24:58,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:58,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:58,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:58,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 17:24:58,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:58,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-28 17:24:58,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:58,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:58,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:24:58,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:24:58,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:24:58,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:24:58,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:24:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:58,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:58,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:58,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:24:58,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:58,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:24:58,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:58,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:58,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:24:58,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:24:58,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:24:58,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:24:58,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:24:58,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:58,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:59,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:59,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:24:59,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:59,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 17:24:59,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:59,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:59,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:24:59,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:24:59,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 17:24:59,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:24:59,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:24:59,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:59,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:59,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:59,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 17:24:59,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:59,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 17:24:59,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:59,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:59,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:24:59,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:24:59,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 17:24:59,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:24:59,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:24:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:59,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:59,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:59,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:24:59,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:59,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:24:59,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:59,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:59,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:24:59,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:24:59,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:24:59,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:24:59,133 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 17:24:59,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995331153] [2020-10-28 17:24:59,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:24:59,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 17:24:59,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273775405] [2020-10-28 17:24:59,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:24:59,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:24:59,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:24:59,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:24:59,136 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 9 states. [2020-10-28 17:24:59,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:24:59,450 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-10-28 17:24:59,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 17:24:59,451 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-10-28 17:24:59,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:24:59,452 INFO L225 Difference]: With dead ends: 31 [2020-10-28 17:24:59,452 INFO L226 Difference]: Without dead ends: 26 [2020-10-28 17:24:59,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-28 17:24:59,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-28 17:24:59,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-28 17:24:59,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-28 17:24:59,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-10-28 17:24:59,461 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 27 [2020-10-28 17:24:59,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:24:59,461 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-10-28 17:24:59,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:24:59,461 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-10-28 17:24:59,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-28 17:24:59,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:24:59,463 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:24:59,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 17:24:59,463 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:24:59,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:24:59,464 INFO L82 PathProgramCache]: Analyzing trace with hash -738125937, now seen corresponding path program 3 times [2020-10-28 17:24:59,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:24:59,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211196506] [2020-10-28 17:24:59,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:24:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:59,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:59,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:59,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 17:24:59,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:59,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-28 17:24:59,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:59,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:59,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:24:59,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:24:59,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 17:24:59,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:24:59,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:24:59,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:59,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:59,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:59,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:24:59,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:59,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:24:59,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:59,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:59,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:24:59,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:24:59,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:24:59,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:24:59,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:24:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:59,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:59,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:59,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 17:24:59,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:59,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-28 17:24:59,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:59,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:59,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:24:59,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:24:59,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 17:24:59,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:24:59,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:24:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:59,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:25:00,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:25:00,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:25:00,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:25:00,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 17:25:00,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:25:00,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:25:00,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:25:00,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:25:00,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 17:25:00,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:25:00,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:25:00,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:25:00,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:25:00,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:25:00,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 17:25:00,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:25:00,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 17:25:00,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:25:00,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:25:00,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:25:00,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:25:00,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 17:25:00,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:25:00,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:25:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:25:00,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:25:00,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:25:00,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:25:00,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:25:00,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:25:00,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:25:00,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:25:00,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:25:00,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:25:00,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:25:00,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:25:00,135 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-28 17:25:00,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211196506] [2020-10-28 17:25:00,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:25:00,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 17:25:00,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844541023] [2020-10-28 17:25:00,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:25:00,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:25:00,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:25:00,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:25:00,138 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 10 states. [2020-10-28 17:25:00,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:25:00,515 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-10-28 17:25:00,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 17:25:00,515 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-10-28 17:25:00,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:25:00,517 INFO L225 Difference]: With dead ends: 34 [2020-10-28 17:25:00,517 INFO L226 Difference]: Without dead ends: 29 [2020-10-28 17:25:00,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-10-28 17:25:00,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-28 17:25:00,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-28 17:25:00,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-28 17:25:00,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-10-28 17:25:00,531 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 33 [2020-10-28 17:25:00,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:25:00,532 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-10-28 17:25:00,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:25:00,532 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-10-28 17:25:00,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-28 17:25:00,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:25:00,534 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:25:00,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 17:25:00,535 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:25:00,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:25:00,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1342585285, now seen corresponding path program 4 times [2020-10-28 17:25:00,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:25:00,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356269221] [2020-10-28 17:25:00,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:25:00,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:25:00,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:25:00,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:25:00,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 17:25:00,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:25:00,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-28 17:25:00,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:25:00,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:25:00,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:25:00,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:25:00,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 17:25:00,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:25:00,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:25:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:25:00,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:25:00,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:25:00,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:25:00,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:25:00,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:25:00,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:25:00,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:25:00,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:25:00,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:25:00,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:25:00,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:25:00,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:25:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:25:00,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:25:00,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:25:00,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 17:25:00,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:25:00,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-28 17:25:00,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:25:00,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:25:00,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:25:00,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:25:00,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:25:00,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:25:00,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:25:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:25:00,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:25:00,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:25:00,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 17:25:00,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:25:00,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 17:25:00,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:25:00,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:25:00,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:25:00,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:25:00,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 17:25:00,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:25:01,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:25:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:25:01,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:25:01,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:25:01,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:25:01,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:25:01,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 17:25:01,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:25:01,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:25:01,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:25:01,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:25:01,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 17:25:01,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:25:01,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:25:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:25:01,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:25:01,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:25:01,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 17:25:01,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:25:01,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:25:01,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:25:01,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:25:01,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:25:01,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:25:01,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 17:25:01,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:25:01,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:25:01,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:25:01,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:25:01,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:25:01,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:25:01,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:25:01,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:25:01,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:25:01,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:25:01,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:25:01,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:25:01,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:25:01,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:25:01,165 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 6 proven. 32 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-28 17:25:01,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356269221] [2020-10-28 17:25:01,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:25:01,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 17:25:01,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656093956] [2020-10-28 17:25:01,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:25:01,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:25:01,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:25:01,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:25:01,168 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 12 states. [2020-10-28 17:25:01,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:25:01,553 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-10-28 17:25:01,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 17:25:01,554 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2020-10-28 17:25:01,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:25:01,555 INFO L225 Difference]: With dead ends: 37 [2020-10-28 17:25:01,555 INFO L226 Difference]: Without dead ends: 32 [2020-10-28 17:25:01,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:25:01,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-28 17:25:01,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-28 17:25:01,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-28 17:25:01,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2020-10-28 17:25:01,564 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 39 [2020-10-28 17:25:01,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:25:01,564 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2020-10-28 17:25:01,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:25:01,564 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-10-28 17:25:01,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-28 17:25:01,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:25:01,566 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:25:01,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 17:25:01,566 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:25:01,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:25:01,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1660180111, now seen corresponding path program 5 times [2020-10-28 17:25:01,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:25:01,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679934265] [2020-10-28 17:25:01,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:25:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:25:01,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:25:01,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:25:01,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 17:25:01,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:25:01,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-28 17:25:01,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:25:01,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:25:01,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 17:25:01,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 17:25:01,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 17:25:01,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:25:01,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:25:01,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:25:01,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:25:01,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:25:01,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:25:01,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:25:01,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:25:01,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:25:01,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:25:01,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:25:01,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:25:01,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:25:01,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:25:01,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:25:01,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:25:01,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:25:02,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:25:02,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 17:25:02,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:25:02,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 17:25:02,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:25:02,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:25:02,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 17:25:02,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:25:02,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 17:25:02,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:25:02,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:25:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:25:02,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:25:02,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:25:02,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 17:25:02,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:25:02,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 17:25:02,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:25:02,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:25:02,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:25:02,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:25:02,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 17:25:02,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:25:02,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:25:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:25:02,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:25:02,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:25:02,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 17:25:02,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:25:02,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-28 17:25:02,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:25:02,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:25:02,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:25:02,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:25:02,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 17:25:02,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:25:02,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:25:02,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:25:02,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:25:02,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:25:02,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:25:02,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:25:02,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 17:25:02,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:25:02,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:25:02,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:25:02,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:25:02,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 17:25:02,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:25:02,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:25:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:25:02,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:25:02,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:25:02,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 17:25:02,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:25:02,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:25:02,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:25:02,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:25:02,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:25:02,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:25:02,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:25:02,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:25:02,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:25:02,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:25:02,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:25:02,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:25:02,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:25:02,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:25:02,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:25:02,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:25:02,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:25:02,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:25:02,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:25:02,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:25:02,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:25:02,636 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-28 17:25:02,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679934265] [2020-10-28 17:25:02,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:25:02,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 17:25:02,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416934462] [2020-10-28 17:25:02,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 17:25:02,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:25:02,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 17:25:02,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-28 17:25:02,641 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 16 states. [2020-10-28 17:25:03,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:25:03,604 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2020-10-28 17:25:03,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 17:25:03,605 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2020-10-28 17:25:03,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:25:03,606 INFO L225 Difference]: With dead ends: 40 [2020-10-28 17:25:03,607 INFO L226 Difference]: Without dead ends: 35 [2020-10-28 17:25:03,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2020-10-28 17:25:03,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-28 17:25:03,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-28 17:25:03,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-28 17:25:03,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-10-28 17:25:03,615 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 45 [2020-10-28 17:25:03,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:25:03,615 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-10-28 17:25:03,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 17:25:03,616 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-10-28 17:25:03,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-28 17:25:03,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:25:03,617 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:25:03,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 17:25:03,618 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:25:03,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:25:03,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1624338501, now seen corresponding path program 6 times [2020-10-28 17:25:03,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:25:03,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132492635] [2020-10-28 17:25:03,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:25:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:25:03,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:25:03,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:25:04,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:25:04,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 17:25:04,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:25:04,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 574 [2020-10-28 17:25:04,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:25:04,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:25:04,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 17:25:04,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:25:04,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 17:25:04,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:25:04,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:25:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:25:04,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:25:04,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:25:04,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:25:04,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:25:04,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:25:04,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:25:04,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:25:04,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:25:04,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:25:04,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:25:04,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:25:04,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:25:04,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:25:04,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:25:04,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:25:04,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 17:25:04,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:25:04,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-28 17:25:04,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:25:04,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:25:04,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 17:25:04,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:25:04,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 17:25:04,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:25:04,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:25:04,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:25:04,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:25:04,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:25:04,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 17:25:04,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:25:04,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 17:25:04,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:25:04,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:25:04,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 17:25:04,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:25:04,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 17:25:04,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:25:04,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:25:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:25:04,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:25:04,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:25:04,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 17:25:04,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:25:04,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-28 17:25:04,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:25:04,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:25:04,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 17:25:04,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:25:04,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 17:25:04,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:25:04,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:25:04,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:25:04,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:25:04,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:25:04,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 17:25:04,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:25:04,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 17:25:04,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:25:04,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:25:04,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:25:04,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:25:04,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 17:25:04,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:25:04,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:25:04,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:25:04,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:25:04,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:25:04,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:25:04,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:25:04,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 17:25:04,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:25:04,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:25:04,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:25:04,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:25:04,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 17:25:04,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:25:04,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:25:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:25:04,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:25:04,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:25:04,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 17:25:04,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:25:04,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:25:04,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:25:04,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:25:04,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:25:04,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:25:04,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 17:25:04,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:25:04,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:25:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:25:04,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:25:04,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:25:04,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:25:04,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:25:04,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:25:04,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:25:04,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:25:04,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:25:04,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:25:04,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:25:04,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:25:04,990 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 61 proven. 14 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-28 17:25:04,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2132492635] [2020-10-28 17:25:04,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:25:04,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 17:25:04,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167462150] [2020-10-28 17:25:04,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 17:25:04,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:25:04,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 17:25:04,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:25:04,994 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 13 states. [2020-10-28 17:25:05,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:25:05,516 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-10-28 17:25:05,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:25:05,517 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2020-10-28 17:25:05,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:25:05,518 INFO L225 Difference]: With dead ends: 35 [2020-10-28 17:25:05,518 INFO L226 Difference]: Without dead ends: 0 [2020-10-28 17:25:05,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2020-10-28 17:25:05,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-28 17:25:05,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-28 17:25:05,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-28 17:25:05,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-28 17:25:05,520 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51 [2020-10-28 17:25:05,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:25:05,521 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-28 17:25:05,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 17:25:05,521 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-28 17:25:05,521 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-28 17:25:05,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 17:25:05,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-28 17:25:05,665 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-10-28 17:25:05,666 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-28 17:25:05,666 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-10-28 17:25:05,666 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-28 17:25:05,666 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-28 17:25:05,667 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-28 17:25:05,667 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-28 17:25:05,667 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-28 17:25:05,667 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-28 17:25:05,667 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-28 17:25:05,667 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-28 17:25:05,667 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true [2020-10-28 17:25:05,667 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 11 17) no Hoare annotation was computed. [2020-10-28 17:25:05,668 INFO L270 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: false [2020-10-28 17:25:05,668 INFO L274 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2020-10-28 17:25:05,668 INFO L274 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-10-28 17:25:05,668 INFO L270 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (and (<= main_~input~0 5) (<= 5 main_~input~0)) [2020-10-28 17:25:05,668 INFO L274 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-10-28 17:25:05,668 INFO L274 CegarLoopResult]: For program point L14-2(lines 11 17) no Hoare annotation was computed. [2020-10-28 17:25:05,668 INFO L274 CegarLoopResult]: For program point idFINAL(lines 6 9) no Hoare annotation was computed. [2020-10-28 17:25:05,669 INFO L274 CegarLoopResult]: For program point idEXIT(lines 6 9) no Hoare annotation was computed. [2020-10-28 17:25:05,669 INFO L270 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (= |id_#in~x| id_~x) [2020-10-28 17:25:05,669 INFO L277 CegarLoopResult]: At program point idENTRY(lines 6 9) the Hoare annotation is: true [2020-10-28 17:25:05,669 INFO L274 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-10-28 17:25:05,669 INFO L274 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-10-28 17:25:05,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 05:25:05 BoogieIcfgContainer [2020-10-28 17:25:05,674 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 17:25:05,677 INFO L168 Benchmark]: Toolchain (without parser) took 9640.67 ms. Allocated memory was 151.0 MB in the beginning and 280.0 MB in the end (delta: 129.0 MB). Free memory was 126.0 MB in the beginning and 162.6 MB in the end (delta: -36.6 MB). Peak memory consumption was 93.4 MB. Max. memory is 8.0 GB. [2020-10-28 17:25:05,678 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 123.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 17:25:05,679 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.81 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 116.6 MB in the end (delta: 8.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-28 17:25:05,679 INFO L168 Benchmark]: Boogie Preprocessor took 48.15 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 115.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 17:25:05,680 INFO L168 Benchmark]: RCFGBuilder took 328.26 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 103.3 MB in the end (delta: 11.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-28 17:25:05,681 INFO L168 Benchmark]: TraceAbstraction took 8909.03 ms. Allocated memory was 151.0 MB in the beginning and 280.0 MB in the end (delta: 129.0 MB). Free memory was 102.8 MB in the beginning and 162.6 MB in the end (delta: -59.8 MB). Peak memory consumption was 70.4 MB. Max. memory is 8.0 GB. [2020-10-28 17:25:05,684 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 123.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 336.81 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 116.6 MB in the end (delta: 8.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.15 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 115.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 328.26 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 103.3 MB in the end (delta: 11.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 8909.03 ms. Allocated memory was 151.0 MB in the beginning and 280.0 MB in the end (delta: 129.0 MB). Free memory was 102.8 MB in the beginning and 162.6 MB in the end (delta: -59.8 MB). Peak memory consumption was 70.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.6s, OverallIterations: 7, TraceHistogramMax: 7, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 114 SDtfs, 181 SDslu, 232 SDs, 0 SdLazy, 664 SolverSat, 108 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 172 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 17 PreInvPairs, 17 NumberOfFragments, 47 HoareAnnotationTreeSize, 17 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 121 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 231 NumberOfCodeBlocks, 231 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 224 ConstructedInterpolants, 0 QuantifiedInterpolants, 28260 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 180/294 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...