/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_o5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 17:24:40,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:24:40,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:24:41,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:24:41,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:24:41,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:24:41,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:24:41,034 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:24:41,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:24:41,046 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:24:41,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:24:41,049 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:24:41,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:24:41,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:24:41,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:24:41,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:24:41,059 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:24:41,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:24:41,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:24:41,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:24:41,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:24:41,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:24:41,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:24:41,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:24:41,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:24:41,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:24:41,103 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:24:41,106 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:24:41,106 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:24:41,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:24:41,108 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:24:41,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:24:41,111 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:24:41,112 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:24:41,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:24:41,113 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:24:41,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:24:41,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:24:41,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:24:41,116 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:24:41,116 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:24:41,118 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 17:24:41,166 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:24:41,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:24:41,171 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:24:41,171 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:24:41,171 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:24:41,172 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:24:41,172 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:24:41,172 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:24:41,172 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:24:41,172 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:24:41,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:24:41,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:24:41,174 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:24:41,174 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:24:41,174 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:24:41,175 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:24:41,175 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:24:41,175 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:24:41,175 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:24:41,176 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:24:41,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:24:41,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:24:41,177 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:24:41,177 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:24:41,177 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:24:41,177 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:24:41,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:24:41,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:24:41,178 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:24:41,178 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:24:41,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:24:41,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:24:41,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:24:41,636 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:24:41,636 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:24:41,637 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i5_o5-1.c [2020-10-28 17:24:41,708 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/457df2fbe/da9ba35abde34a64ba27aab1b033a373/FLAGc0c21efb0 [2020-10-28 17:24:42,370 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:24:42,371 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_i5_o5-1.c [2020-10-28 17:24:42,378 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/457df2fbe/da9ba35abde34a64ba27aab1b033a373/FLAGc0c21efb0 [2020-10-28 17:24:42,749 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/457df2fbe/da9ba35abde34a64ba27aab1b033a373 [2020-10-28 17:24:42,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:24:42,763 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:24:42,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:24:42,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:24:42,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:24:42,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:24:42" (1/1) ... [2020-10-28 17:24:42,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58b41489 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:24:42, skipping insertion in model container [2020-10-28 17:24:42,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:24:42" (1/1) ... [2020-10-28 17:24:42,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:24:42,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:24:42,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:24:42,976 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:24:42,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:24:43,011 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:24:43,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:24:43 WrapperNode [2020-10-28 17:24:43,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:24:43,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:24:43,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:24:43,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:24:43,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:24:43" (1/1) ... [2020-10-28 17:24:43,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:24:43" (1/1) ... [2020-10-28 17:24:43,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:24:43" (1/1) ... [2020-10-28 17:24:43,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:24:43" (1/1) ... [2020-10-28 17:24:43,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:24:43" (1/1) ... [2020-10-28 17:24:43,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:24:43" (1/1) ... [2020-10-28 17:24:43,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:24:43" (1/1) ... [2020-10-28 17:24:43,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:24:43,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:24:43,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:24:43,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:24:43,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:24:43" (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 17:24:43,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:24:43,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:24:43,130 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:24:43,131 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-10-28 17:24:43,131 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:24:43,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 17:24:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:24:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:24:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:24:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:24:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-10-28 17:24:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:24:43,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:24:43,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:24:43,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:24:43,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:24:43,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:24:43,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:24:43,529 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:24:43,530 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 17:24:43,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:24:43 BoogieIcfgContainer [2020-10-28 17:24:43,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:24:43,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:24:43,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:24:43,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:24:43,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:24:42" (1/3) ... [2020-10-28 17:24:43,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47bed371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:24:43, skipping insertion in model container [2020-10-28 17:24:43,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:24:43" (2/3) ... [2020-10-28 17:24:43,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47bed371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:24:43, skipping insertion in model container [2020-10-28 17:24:43,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:24:43" (3/3) ... [2020-10-28 17:24:43,544 INFO L111 eAbstractionObserver]: Analyzing ICFG id_i5_o5-1.c [2020-10-28 17:24:43,557 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:24:43,562 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:24:43,577 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:24:43,632 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:24:43,632 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:24:43,633 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:24:43,633 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:24:43,633 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:24:43,633 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:24:43,633 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:24:43,633 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:24:43,662 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-28 17:24:43,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-28 17:24:43,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:24:43,672 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:24:43,672 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:24:43,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:24:43,683 INFO L82 PathProgramCache]: Analyzing trace with hash 560135365, now seen corresponding path program 1 times [2020-10-28 17:24:43,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:24:43,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627195497] [2020-10-28 17:24:43,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:24:43,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:43,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:43,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:44,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:44,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:24:44,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:24:44,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 592 [2020-10-28 17:24:44,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:44,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:44,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:24:44,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:24:44,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:24:44,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 17:24:44,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:24:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:44,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:44,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:44,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:24:44,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:44,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:24:44,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:44,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:44,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:24:44,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:24:44,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:24:44,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:24:44,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:24:44,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:44,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:44,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:44,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:24:44,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:44,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 17:24:44,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:44,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:44,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:24:44,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:24:44,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:24:44,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:24:44,749 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 17:24:44,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627195497] [2020-10-28 17:24:44,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:24:44,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 17:24:44,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215285585] [2020-10-28 17:24:44,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:24:44,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:24:44,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:24:44,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:24:44,780 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 6 states. [2020-10-28 17:24:45,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:24:45,251 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2020-10-28 17:24:45,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:24:45,254 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-28 17:24:45,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:24:45,264 INFO L225 Difference]: With dead ends: 36 [2020-10-28 17:24:45,264 INFO L226 Difference]: Without dead ends: 20 [2020-10-28 17:24:45,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:24:45,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-28 17:24:45,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-28 17:24:45,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-28 17:24:45,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-10-28 17:24:45,336 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 15 [2020-10-28 17:24:45,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:24:45,337 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-10-28 17:24:45,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:24:45,337 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-10-28 17:24:45,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-28 17:24:45,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:24:45,339 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 17:24:45,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:24:45,340 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:24:45,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:24:45,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1295611761, now seen corresponding path program 1 times [2020-10-28 17:24:45,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:24:45,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453341857] [2020-10-28 17:24:45,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:24:45,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:45,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:45,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:45,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:45,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 17:24:45,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:24:45,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 541 [2020-10-28 17:24:45,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:45,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:45,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:24:45,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:24:45,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:24:45,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:24:45,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:24:45,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:45,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:45,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:45,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:24:45,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:45,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:24:45,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:45,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:45,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:24:45,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:24:45,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:24:45,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:24:45,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:24:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:45,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:45,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:45,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 17:24:45,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:45,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 17:24:45,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:46,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:46,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:24:46,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:24:46,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:24:46,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-10-28 17:24:46,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:24:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:46,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:46,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:46,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:24:46,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:46,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:24:46,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:46,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:46,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:24:46,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:24:46,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:24:46,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:24:46,072 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 17:24:46,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453341857] [2020-10-28 17:24:46,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:24:46,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 17:24:46,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142220100] [2020-10-28 17:24:46,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:24:46,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:24:46,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:24:46,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:24:46,077 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 8 states. [2020-10-28 17:24:46,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:24:46,360 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-10-28 17:24:46,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 17:24:46,361 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-10-28 17:24:46,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:24:46,362 INFO L225 Difference]: With dead ends: 28 [2020-10-28 17:24:46,362 INFO L226 Difference]: Without dead ends: 23 [2020-10-28 17:24:46,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:24:46,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-28 17:24:46,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-28 17:24:46,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-28 17:24:46,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-10-28 17:24:46,373 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 21 [2020-10-28 17:24:46,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:24:46,373 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-10-28 17:24:46,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:24:46,373 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-10-28 17:24:46,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 17:24:46,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:24:46,375 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 17:24:46,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 17:24:46,375 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:24:46,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:24:46,376 INFO L82 PathProgramCache]: Analyzing trace with hash -116387003, now seen corresponding path program 2 times [2020-10-28 17:24:46,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:24:46,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788588019] [2020-10-28 17:24:46,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:24:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:46,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:46,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:47,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:47,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 17:24:47,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:24:47,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 720 [2020-10-28 17:24:47,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:47,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:47,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:24:47,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:24:47,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:24:47,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:24:47,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:24:47,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:47,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:47,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:47,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:24:47,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:47,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:24:47,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:47,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:47,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:24:47,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:24:47,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:24:47,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:24:47,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:24:47,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:47,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:47,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:47,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:24:47,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:47,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 17:24:47,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:47,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:47,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:24:47,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:24:47,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 17:24:47,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:24:47,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:24:47,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:47,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:47,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:47,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 17:24:47,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:47,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 17:24:47,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:47,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:47,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:24:47,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:24:47,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 17:24:47,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:24:47,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:24:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:47,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:47,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:47,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:24:47,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:47,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:24:47,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:47,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:47,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:24:47,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:24:47,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:24:47,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:24:47,396 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 17:24:47,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788588019] [2020-10-28 17:24:47,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:24:47,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 17:24:47,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545700265] [2020-10-28 17:24:47,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:24:47,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:24:47,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:24:47,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:24:47,399 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 9 states. [2020-10-28 17:24:47,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:24:47,691 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-10-28 17:24:47,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 17:24:47,692 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-10-28 17:24:47,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:24:47,693 INFO L225 Difference]: With dead ends: 31 [2020-10-28 17:24:47,693 INFO L226 Difference]: Without dead ends: 26 [2020-10-28 17:24:47,694 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 17:24:47,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-28 17:24:47,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-28 17:24:47,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-28 17:24:47,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-10-28 17:24:47,702 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 27 [2020-10-28 17:24:47,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:24:47,702 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-10-28 17:24:47,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:24:47,702 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-10-28 17:24:47,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-28 17:24:47,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:24:47,704 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 17:24:47,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 17:24:47,704 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:24:47,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:24:47,705 INFO L82 PathProgramCache]: Analyzing trace with hash -738125937, now seen corresponding path program 3 times [2020-10-28 17:24:47,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:24:47,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958145311] [2020-10-28 17:24:47,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:24:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:47,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:47,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:49,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:49,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 17:24:49,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:24:49,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1306 [2020-10-28 17:24:49,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:49,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:49,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:24:49,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:24:49,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 17:24:49,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:24:49,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:24:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:49,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:49,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:49,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:24:49,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:49,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:24:49,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:49,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:49,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:24:49,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:24:49,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:24:49,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:24:49,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:24:49,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:49,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:49,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:49,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 17:24:49,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:49,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 17:24:49,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:49,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:49,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:24:49,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:24:49,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 17:24:49,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:24:49,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:24:49,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:49,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:49,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:49,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:24:49,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:49,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 17:24:49,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:49,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:49,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:24:49,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:24:49,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 17:24:49,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:24:49,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:24:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:49,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:49,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:49,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 17:24:49,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:49,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 17:24:49,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:49,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:49,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:24:49,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:24:49,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 17:24:49,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:24:49,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:24:49,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:49,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:49,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:49,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:24:49,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:49,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:24:49,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:49,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:49,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:24:49,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:24:49,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:24:49,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:24:49,377 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 17:24:49,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958145311] [2020-10-28 17:24:49,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:24:49,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 17:24:49,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451128070] [2020-10-28 17:24:49,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:24:49,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:24:49,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:24:49,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:24:49,389 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 11 states. [2020-10-28 17:24:49,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:24:49,779 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-10-28 17:24:49,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 17:24:49,779 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-28 17:24:49,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:24:49,781 INFO L225 Difference]: With dead ends: 34 [2020-10-28 17:24:49,781 INFO L226 Difference]: Without dead ends: 29 [2020-10-28 17:24:49,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:24:49,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-28 17:24:49,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-28 17:24:49,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-28 17:24:49,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-10-28 17:24:49,789 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 33 [2020-10-28 17:24:49,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:24:49,790 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-10-28 17:24:49,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:24:49,790 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-10-28 17:24:49,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-28 17:24:49,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:24:49,791 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 17:24:49,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 17:24:49,792 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:24:49,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:24:49,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1342585285, now seen corresponding path program 4 times [2020-10-28 17:24:49,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:24:49,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698857828] [2020-10-28 17:24:49,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:24:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:49,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:49,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:50,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:50,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 17:24:50,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:24:50,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 942 [2020-10-28 17:24:50,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:50,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:50,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:24:50,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:24:50,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 17:24:50,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:24:50,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:24:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:50,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:50,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:50,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:24:50,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:50,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:24:50,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:50,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:50,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:24:50,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:24:50,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:24:50,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:24:50,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:24:50,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:50,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:50,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:50,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 17:24:50,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:50,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 17:24:50,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:50,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:50,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:24:50,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:24:50,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:24:50,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:24:50,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:24:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:50,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:50,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:50,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 17:24:50,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:50,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 17:24:50,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:50,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:50,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:24:50,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:24:50,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 17:24:50,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:24:50,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:24:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:50,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:51,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:51,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:24:51,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:51,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 17:24:51,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:51,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:51,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:24:51,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:24:51,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 17:24:51,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:24:51,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:24:51,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:51,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:51,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:51,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 17:24:51,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:51,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 17:24:51,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:51,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:51,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:24:51,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:24:51,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 17:24:51,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:24:51,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 17:24:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:24:51,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:24:51,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:24:51,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:24:51,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:24:51,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:24:51,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:24:51,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:24:51,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:24:51,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:24:51,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:24:51,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:24:51,121 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-28 17:24:51,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698857828] [2020-10-28 17:24:51,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:24:51,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 17:24:51,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446447903] [2020-10-28 17:24:51,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:24:51,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:24:51,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:24:51,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:24:51,124 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 11 states. [2020-10-28 17:24:51,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:24:51,542 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-10-28 17:24:51,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 17:24:51,543 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2020-10-28 17:24:51,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:24:51,544 INFO L225 Difference]: With dead ends: 37 [2020-10-28 17:24:51,545 INFO L226 Difference]: Without dead ends: 32 [2020-10-28 17:24:51,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2020-10-28 17:24:51,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-28 17:24:51,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-28 17:24:51,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-28 17:24:51,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2020-10-28 17:24:51,553 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 39 [2020-10-28 17:24:51,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:24:51,554 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2020-10-28 17:24:51,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:24:51,554 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-10-28 17:24:51,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-28 17:24:51,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:24:51,556 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 17:24:51,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 17:24:51,556 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:24:51,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:24:51,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1660180111, now seen corresponding path program 5 times [2020-10-28 17:24:51,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:24:51,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038675121] [2020-10-28 17:24:51,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:24:51,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 17:24:51,571 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 17:24:51,572 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 17:24:51,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 17:24:51,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 05:24:51 BoogieIcfgContainer [2020-10-28 17:24:51,595 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 17:24:51,597 INFO L168 Benchmark]: Toolchain (without parser) took 8838.59 ms. Allocated memory was 151.0 MB in the beginning and 263.2 MB in the end (delta: 112.2 MB). Free memory was 126.8 MB in the beginning and 234.6 MB in the end (delta: -107.9 MB). Peak memory consumption was 5.3 MB. Max. memory is 8.0 GB. [2020-10-28 17:24:51,598 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 17:24:51,599 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.52 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 116.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-28 17:24:51,600 INFO L168 Benchmark]: Boogie Preprocessor took 35.30 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 115.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-28 17:24:51,601 INFO L168 Benchmark]: RCFGBuilder took 482.24 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 103.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-28 17:24:51,602 INFO L168 Benchmark]: TraceAbstraction took 8060.22 ms. Allocated memory was 151.0 MB in the beginning and 263.2 MB in the end (delta: 112.2 MB). Free memory was 102.6 MB in the beginning and 234.6 MB in the end (delta: -132.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 17:24:51,605 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 245.52 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 116.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.30 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 115.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 482.24 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 103.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 8060.22 ms. Allocated memory was 151.0 MB in the beginning and 263.2 MB in the end (delta: 112.2 MB). Free memory was 102.6 MB in the beginning and 234.6 MB in the end (delta: -132.0 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int input = 5; [L13] CALL, EXPR id(input) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id(x-1) [L7] COND TRUE x==0 [L7] return 0; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) [L8] return id(x-1) + 1; [L13] RET, EXPR id(input) [L13] int result = id(input); [L14] COND TRUE result == 5 [L15] CALL reach_error() [L4] __assert_fail("0", "id_i5_o5-1.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.9s, OverallIterations: 6, TraceHistogramMax: 6, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 74 SDtfs, 141 SDslu, 122 SDs, 0 SdLazy, 259 SolverSat, 83 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=5, 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: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 180 NumberOfCodeBlocks, 180 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 12456 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 40/100 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 incorrect! Received shutdown request...