/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/recHanoi03-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 17:15:40,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:15:40,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:15:40,766 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:15:40,767 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:15:40,768 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:15:40,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:15:40,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:15:40,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:15:40,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:15:40,777 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:15:40,779 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:15:40,779 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:15:40,780 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:15:40,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:15:40,783 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:15:40,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:15:40,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:15:40,788 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:15:40,790 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:15:40,792 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:15:40,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:15:40,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:15:40,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:15:40,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:15:40,810 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:15:40,810 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:15:40,812 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:15:40,815 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:15:40,816 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:15:40,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:15:40,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:15:40,823 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:15:40,825 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:15:40,826 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:15:40,826 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:15:40,827 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:15:40,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:15:40,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:15:40,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:15:40,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:15:40,832 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 17:15:40,890 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:15:40,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:15:40,896 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:15:40,896 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:15:40,896 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:15:40,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:15:40,897 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:15:40,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:15:40,898 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:15:40,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:15:40,899 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:15:40,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:15:40,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:15:40,900 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:15:40,900 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:15:40,900 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:15:40,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:15:40,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:15:40,901 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:15:40,901 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:15:40,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:15:40,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:15:40,902 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:15:40,902 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:15:40,902 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:15:40,902 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:15:40,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:15:40,903 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:15:40,903 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:15:40,903 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:15:41,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:15:41,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:15:41,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:15:41,356 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:15:41,356 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:15:41,357 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/recHanoi03-2.c [2020-10-28 17:15:41,440 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e337460da/622cff6980404194bc9a5268c94068b3/FLAGb057a8295 [2020-10-28 17:15:42,148 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:15:42,149 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/recHanoi03-2.c [2020-10-28 17:15:42,158 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e337460da/622cff6980404194bc9a5268c94068b3/FLAGb057a8295 [2020-10-28 17:15:42,494 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e337460da/622cff6980404194bc9a5268c94068b3 [2020-10-28 17:15:42,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:15:42,505 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:15:42,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:15:42,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:15:42,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:15:42,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:15:42" (1/1) ... [2020-10-28 17:15:42,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@232de4eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:15:42, skipping insertion in model container [2020-10-28 17:15:42,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:15:42" (1/1) ... [2020-10-28 17:15:42,524 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:15:42,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:15:42,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:15:42,721 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:15:42,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:15:42,751 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:15:42,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:15:42 WrapperNode [2020-10-28 17:15:42,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:15:42,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:15:42,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:15:42,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:15:42,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:15:42" (1/1) ... [2020-10-28 17:15:42,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:15:42" (1/1) ... [2020-10-28 17:15:42,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:15:42" (1/1) ... [2020-10-28 17:15:42,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:15:42" (1/1) ... [2020-10-28 17:15:42,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:15:42" (1/1) ... [2020-10-28 17:15:42,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:15:42" (1/1) ... [2020-10-28 17:15:42,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:15:42" (1/1) ... [2020-10-28 17:15:42,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:15:42,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:15:42,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:15:42,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:15:42,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:15:42" (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 17:15:42,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:15:42,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:15:42,879 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:15:42,879 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-10-28 17:15:42,879 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:15:42,880 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:15:42,880 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:15:42,880 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:15:42,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:15:42,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 17:15:42,880 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-10-28 17:15:42,881 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:15:42,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:15:42,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:15:42,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:15:42,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:15:42,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:15:42,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:15:43,239 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:15:43,240 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 17:15:43,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:15:43 BoogieIcfgContainer [2020-10-28 17:15:43,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:15:43,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:15:43,244 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:15:43,248 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:15:43,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:15:42" (1/3) ... [2020-10-28 17:15:43,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f658009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:15:43, skipping insertion in model container [2020-10-28 17:15:43,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:15:42" (2/3) ... [2020-10-28 17:15:43,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f658009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:15:43, skipping insertion in model container [2020-10-28 17:15:43,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:15:43" (3/3) ... [2020-10-28 17:15:43,252 INFO L111 eAbstractionObserver]: Analyzing ICFG recHanoi03-2.c [2020-10-28 17:15:43,268 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:15:43,274 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:15:43,290 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:15:43,323 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:15:43,323 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:15:43,323 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:15:43,323 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:15:43,324 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:15:43,324 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:15:43,324 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:15:43,324 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:15:43,347 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-28 17:15:43,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-28 17:15:43,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:15:43,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:15:43,356 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:15:43,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:15:43,392 INFO L82 PathProgramCache]: Analyzing trace with hash -874294957, now seen corresponding path program 1 times [2020-10-28 17:15:43,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:15:43,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203565009] [2020-10-28 17:15:43,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:15:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:43,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:44,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:44,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:15:44,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:44,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-28 17:15:44,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:44,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:44,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:15:44,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 17:15:44,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:15:44,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:15:44,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:15:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:44,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:44,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:44,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:15:44,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:44,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:15:44,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:44,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:44,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:44,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:44,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:44,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:15:44,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 17:15:44,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:44,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:44,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:44,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:15:44,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:44,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:15:44,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:44,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:44,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:15:44,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:44,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:15:44,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:15:44,272 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 17:15:44,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203565009] [2020-10-28 17:15:44,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:15:44,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 17:15:44,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391891941] [2020-10-28 17:15:44,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 17:15:44,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:15:44,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 17:15:44,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:15:44,303 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 7 states. [2020-10-28 17:15:44,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:15:44,802 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-10-28 17:15:44,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 17:15:44,805 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-10-28 17:15:44,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:15:44,815 INFO L225 Difference]: With dead ends: 39 [2020-10-28 17:15:44,816 INFO L226 Difference]: Without dead ends: 21 [2020-10-28 17:15:44,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:15:44,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-28 17:15:44,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-28 17:15:44,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-28 17:15:44,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-10-28 17:15:44,895 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 16 [2020-10-28 17:15:44,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:15:44,896 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-10-28 17:15:44,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 17:15:44,897 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-10-28 17:15:44,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 17:15:44,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:15:44,902 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:15:44,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:15:44,902 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:15:44,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:15:44,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1992247557, now seen corresponding path program 1 times [2020-10-28 17:15:44,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:15:44,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117613069] [2020-10-28 17:15:44,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:15:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:44,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:45,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:45,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 17:15:45,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:45,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-28 17:15:45,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:45,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:45,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:15:45,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 17:15:45,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:15:45,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:45,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:15:45,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:45,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:45,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:45,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:15:45,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:45,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 17:15:45,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:45,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:45,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:45,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:45,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:45,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:15:45,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 17:15:45,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:45,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:45,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:45,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 17:15:45,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:45,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-28 17:15:45,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:45,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:45,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:15:45,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:45,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 17:15:45,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:45,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:15:45,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:45,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:45,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:45,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:15:45,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:45,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 17:15:45,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:45,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:45,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:15:45,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:45,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:15:45,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:45,651 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 17:15:45,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117613069] [2020-10-28 17:15:45,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:15:45,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 17:15:45,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075902789] [2020-10-28 17:15:45,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:15:45,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:15:45,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:15:45,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:15:45,656 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 10 states. [2020-10-28 17:15:46,124 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2020-10-28 17:15:46,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:15:46,375 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2020-10-28 17:15:46,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 17:15:46,376 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2020-10-28 17:15:46,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:15:46,379 INFO L225 Difference]: With dead ends: 29 [2020-10-28 17:15:46,379 INFO L226 Difference]: Without dead ends: 24 [2020-10-28 17:15:46,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-10-28 17:15:46,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-28 17:15:46,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-28 17:15:46,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-28 17:15:46,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-10-28 17:15:46,390 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 22 [2020-10-28 17:15:46,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:15:46,390 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-10-28 17:15:46,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:15:46,390 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-10-28 17:15:46,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-28 17:15:46,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:15:46,392 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:15:46,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 17:15:46,392 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:15:46,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:15:46,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1177737683, now seen corresponding path program 2 times [2020-10-28 17:15:46,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:15:46,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164182042] [2020-10-28 17:15:46,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:15:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:46,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:46,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:46,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:15:46,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:46,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-28 17:15:46,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:46,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:46,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 17:15:46,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 17:15:46,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 17:15:46,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:46,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:15:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:46,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:46,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:46,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:15:46,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:46,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:15:46,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:46,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:46,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:46,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:46,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:46,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:46,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 17:15:46,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:46,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:46,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:46,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:15:46,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:46,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-28 17:15:46,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:46,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:46,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 17:15:46,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:46,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 17:15:46,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:46,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:15:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:46,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:46,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:46,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 17:15:46,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:46,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 17:15:46,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:46,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:46,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:15:46,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:46,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 17:15:46,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:15:46,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:15:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:46,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:46,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:46,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:15:46,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:46,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:15:46,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:46,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:46,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:15:46,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:46,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:15:46,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:47,026 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 17:15:47,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1164182042] [2020-10-28 17:15:47,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:15:47,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 17:15:47,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081547286] [2020-10-28 17:15:47,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:15:47,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:15:47,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:15:47,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:15:47,030 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 12 states. [2020-10-28 17:15:47,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:15:47,643 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2020-10-28 17:15:47,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 17:15:47,644 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2020-10-28 17:15:47,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:15:47,647 INFO L225 Difference]: With dead ends: 32 [2020-10-28 17:15:47,647 INFO L226 Difference]: Without dead ends: 27 [2020-10-28 17:15:47,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:15:47,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-28 17:15:47,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-28 17:15:47,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-28 17:15:47,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-10-28 17:15:47,665 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 28 [2020-10-28 17:15:47,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:15:47,666 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-10-28 17:15:47,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:15:47,666 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-10-28 17:15:47,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 17:15:47,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:15:47,669 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:15:47,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 17:15:47,669 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:15:47,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:15:47,675 INFO L82 PathProgramCache]: Analyzing trace with hash -859595771, now seen corresponding path program 3 times [2020-10-28 17:15:47,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:15:47,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278600000] [2020-10-28 17:15:47,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:15:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:47,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:48,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:48,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:15:48,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:48,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 345 [2020-10-28 17:15:48,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:48,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:48,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 17:15:48,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 17:15:48,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 17:15:48,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:48,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:15:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:48,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:48,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:48,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:15:48,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:48,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:15:48,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:48,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:48,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:48,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:48,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:48,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:15:48,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 17:15:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:48,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:48,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:48,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 17:15:48,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:48,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-28 17:15:48,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:48,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:48,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 17:15:48,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:48,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 17:15:48,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:48,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:15:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:48,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:48,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:48,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:15:48,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:48,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-28 17:15:48,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:48,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:48,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 17:15:48,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:48,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 17:15:48,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:15:48,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:15:48,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:48,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:48,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:48,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 17:15:48,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:48,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 17:15:48,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:48,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:48,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:15:48,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:48,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 17:15:48,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:15:48,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:15:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:48,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:48,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:48,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:15:48,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:48,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:15:48,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:48,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:48,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:15:48,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:48,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:15:48,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:15:48,768 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 17:15:48,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278600000] [2020-10-28 17:15:48,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:15:48,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 17:15:48,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342010742] [2020-10-28 17:15:48,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 17:15:48,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:15:48,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 17:15:48,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:15:48,771 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 15 states. [2020-10-28 17:15:49,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:15:49,453 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-10-28 17:15:49,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:15:49,454 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 34 [2020-10-28 17:15:49,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:15:49,456 INFO L225 Difference]: With dead ends: 35 [2020-10-28 17:15:49,456 INFO L226 Difference]: Without dead ends: 30 [2020-10-28 17:15:49,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2020-10-28 17:15:49,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-28 17:15:49,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-28 17:15:49,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-28 17:15:49,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-10-28 17:15:49,476 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 34 [2020-10-28 17:15:49,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:15:49,478 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-10-28 17:15:49,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 17:15:49,478 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-10-28 17:15:49,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-28 17:15:49,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:15:49,481 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:15:49,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 17:15:49,481 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:15:49,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:15:49,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1203654061, now seen corresponding path program 4 times [2020-10-28 17:15:49,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:15:49,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671558034] [2020-10-28 17:15:49,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:15:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:49,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:49,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:50,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:50,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 17:15:50,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:15:50,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 647 [2020-10-28 17:15:50,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:50,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:50,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 17:15:50,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:15:50,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 17:15:50,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:15:50,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:15:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:50,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:50,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:50,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:15:50,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:50,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:15:50,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:50,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:50,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:50,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:50,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:50,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:50,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 17:15:50,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:50,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:50,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:50,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:50,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 17:15:50,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:15:50,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-28 17:15:50,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:50,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:50,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:15:50,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:50,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:15:50,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:50,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:15:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:50,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:50,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:50,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 17:15:50,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:50,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 17:15:50,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:50,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:50,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:15:50,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:50,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 17:15:50,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:50,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:15:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:50,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:50,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:50,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:15:50,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:50,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 17:15:50,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:50,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:50,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:15:50,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:50,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 17:15:50,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:50,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:15:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:50,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:50,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:50,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 17:15:50,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:50,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:15:50,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:50,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:50,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:15:50,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:50,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:15:50,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:50,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:15:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:50,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:50,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:50,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:15:50,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:50,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:15:50,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:50,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:50,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:15:50,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:50,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:15:50,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:50,830 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 15 proven. 11 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-28 17:15:50,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671558034] [2020-10-28 17:15:50,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:15:50,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 17:15:50,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011261997] [2020-10-28 17:15:50,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 17:15:50,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:15:50,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 17:15:50,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:15:50,833 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 15 states. [2020-10-28 17:15:51,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:15:51,511 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2020-10-28 17:15:51,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 17:15:51,511 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2020-10-28 17:15:51,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:15:51,512 INFO L225 Difference]: With dead ends: 30 [2020-10-28 17:15:51,512 INFO L226 Difference]: Without dead ends: 0 [2020-10-28 17:15:51,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2020-10-28 17:15:51,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-28 17:15:51,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-28 17:15:51,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-28 17:15:51,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-28 17:15:51,514 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2020-10-28 17:15:51,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:15:51,514 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-28 17:15:51,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 17:15:51,515 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-28 17:15:51,515 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-28 17:15:51,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 17:15:51,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-28 17:15:51,663 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-28 17:15:51,663 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-28 17:15:51,663 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-28 17:15:51,663 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-28 17:15:51,664 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-28 17:15:51,664 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 17:15:51,664 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-28 17:15:51,664 INFO L274 CegarLoopResult]: For program point hanoiEXIT(lines 18 23) no Hoare annotation was computed. [2020-10-28 17:15:51,664 INFO L277 CegarLoopResult]: At program point hanoiENTRY(lines 18 23) the Hoare annotation is: true [2020-10-28 17:15:51,664 INFO L274 CegarLoopResult]: For program point hanoiFINAL(lines 18 23) no Hoare annotation was computed. [2020-10-28 17:15:51,664 INFO L270 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (= hanoi_~n |hanoi_#in~n|) [2020-10-28 17:15:51,665 INFO L274 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-10-28 17:15:51,665 INFO L274 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-10-28 17:15:51,665 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-28 17:15:51,665 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-28 17:15:51,665 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-28 17:15:51,665 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-28 17:15:51,665 INFO L274 CegarLoopResult]: For program point L32(lines 32 36) no Hoare annotation was computed. [2020-10-28 17:15:51,665 INFO L270 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (<= main_~n~0 31) [2020-10-28 17:15:51,665 INFO L274 CegarLoopResult]: For program point L31-1(line 31) no Hoare annotation was computed. [2020-10-28 17:15:51,666 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 26 37) the Hoare annotation is: true [2020-10-28 17:15:51,666 INFO L274 CegarLoopResult]: For program point L28(lines 28 30) no Hoare annotation was computed. [2020-10-28 17:15:51,666 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 26 37) no Hoare annotation was computed. [2020-10-28 17:15:51,666 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 26 37) no Hoare annotation was computed. [2020-10-28 17:15:51,666 INFO L270 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: false [2020-10-28 17:15:51,666 INFO L274 CegarLoopResult]: For program point L35-1(line 35) no Hoare annotation was computed. [2020-10-28 17:15:51,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 05:15:51 BoogieIcfgContainer [2020-10-28 17:15:51,672 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 17:15:51,676 INFO L168 Benchmark]: Toolchain (without parser) took 9174.36 ms. Allocated memory was 125.8 MB in the beginning and 230.7 MB in the end (delta: 104.9 MB). Free memory was 101.2 MB in the beginning and 133.0 MB in the end (delta: -31.8 MB). Peak memory consumption was 74.1 MB. Max. memory is 8.0 GB. [2020-10-28 17:15:51,677 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 125.8 MB. Free memory is still 85.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 17:15:51,679 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.25 ms. Allocated memory is still 125.8 MB. Free memory was 100.7 MB in the beginning and 91.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-28 17:15:51,680 INFO L168 Benchmark]: Boogie Preprocessor took 35.22 ms. Allocated memory is still 125.8 MB. Free memory was 91.4 MB in the beginning and 90.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 17:15:51,687 INFO L168 Benchmark]: RCFGBuilder took 452.47 ms. Allocated memory is still 125.8 MB. Free memory was 90.0 MB in the beginning and 77.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-28 17:15:51,687 INFO L168 Benchmark]: TraceAbstraction took 8428.43 ms. Allocated memory was 125.8 MB in the beginning and 230.7 MB in the end (delta: 104.9 MB). Free memory was 76.9 MB in the beginning and 133.0 MB in the end (delta: -56.0 MB). Peak memory consumption was 50.0 MB. Max. memory is 8.0 GB. [2020-10-28 17:15:51,698 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 125.8 MB. Free memory is still 85.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 246.25 ms. Allocated memory is still 125.8 MB. Free memory was 100.7 MB in the beginning and 91.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.22 ms. Allocated memory is still 125.8 MB. Free memory was 91.4 MB in the beginning and 90.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 452.47 ms. Allocated memory is still 125.8 MB. Free memory was 90.0 MB in the beginning and 77.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 8428.43 ms. Allocated memory was 125.8 MB in the beginning and 230.7 MB in the end (delta: 104.9 MB). Free memory was 76.9 MB in the beginning and 133.0 MB in the end (delta: -56.0 MB). Peak memory consumption was 50.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.1s, OverallIterations: 5, TraceHistogramMax: 5, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 81 SDtfs, 95 SDslu, 234 SDs, 0 SdLazy, 737 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=4, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 15 PreInvPairs, 15 NumberOfFragments, 43 HoareAnnotationTreeSize, 15 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 122 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 140 NumberOfCodeBlocks, 140 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 15303 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 56/100 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...