/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=SHALLOWEST --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_b3_o2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:06:49,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:06:49,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:06:49,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:06:49,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:06:49,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:06:49,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:06:49,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:06:49,203 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:06:49,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:06:49,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:06:49,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:06:49,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:06:49,218 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:06:49,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:06:49,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:06:49,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:06:49,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:06:49,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:06:49,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:06:49,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:06:49,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:06:49,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:06:49,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:06:49,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:06:49,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:06:49,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:06:49,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:06:49,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:06:49,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:06:49,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:06:49,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:06:49,277 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:06:49,277 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:06:49,278 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:06:49,279 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:06:49,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:06:49,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:06:49,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:06:49,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:06:49,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:06:49,283 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 04:06:49,330 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:06:49,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:06:49,336 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:06:49,336 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:06:49,336 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:06:49,336 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:06:49,337 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:06:49,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:06:49,337 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:06:49,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:06:49,338 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:06:49,339 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:06:49,339 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:06:49,339 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:06:49,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:06:49,340 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:06:49,340 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:06:49,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:06:49,340 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:06:49,340 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:06:49,341 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:06:49,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:06:49,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:06:49,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:06:49,341 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:06:49,341 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:06:49,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:06:49,342 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:06:49,342 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:06:49,342 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:06:49,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:06:49,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:06:49,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:06:49,756 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:06:49,756 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:06:49,758 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_b3_o2-2.c [2020-10-27 04:06:49,831 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8372e6bfd/17fdac42344b4e2ab26414f86f2cc266/FLAG991046690 [2020-10-27 04:06:50,426 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:06:50,427 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_b3_o2-2.c [2020-10-27 04:06:50,434 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8372e6bfd/17fdac42344b4e2ab26414f86f2cc266/FLAG991046690 [2020-10-27 04:06:50,783 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8372e6bfd/17fdac42344b4e2ab26414f86f2cc266 [2020-10-27 04:06:50,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:06:50,795 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:06:50,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:06:50,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:06:50,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:06:50,807 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:06:50" (1/1) ... [2020-10-27 04:06:50,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38d5935a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:06:50, skipping insertion in model container [2020-10-27 04:06:50,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:06:50" (1/1) ... [2020-10-27 04:06:50,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:06:50,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:06:51,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:06:51,046 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:06:51,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:06:51,078 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:06:51,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:06:51 WrapperNode [2020-10-27 04:06:51,079 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:06:51,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:06:51,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:06:51,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:06:51,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:06:51" (1/1) ... [2020-10-27 04:06:51,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:06:51" (1/1) ... [2020-10-27 04:06:51,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:06:51" (1/1) ... [2020-10-27 04:06:51,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:06:51" (1/1) ... [2020-10-27 04:06:51,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:06:51" (1/1) ... [2020-10-27 04:06:51,109 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:06:51" (1/1) ... [2020-10-27 04:06:51,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:06:51" (1/1) ... [2020-10-27 04:06:51,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:06:51,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:06:51,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:06:51,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:06:51,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:06:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:06:51,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:06:51,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:06:51,182 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:06:51,182 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-10-27 04:06:51,182 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:06:51,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 04:06:51,183 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:06:51,183 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:06:51,183 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:06:51,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:06:51,183 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-10-27 04:06:51,183 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:06:51,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:06:51,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:06:51,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:06:51,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:06:51,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:06:51,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:06:51,457 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:06:51,457 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 04:06:51,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:06:51 BoogieIcfgContainer [2020-10-27 04:06:51,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:06:51,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:06:51,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:06:51,464 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:06:51,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:06:50" (1/3) ... [2020-10-27 04:06:51,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb4ae85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:06:51, skipping insertion in model container [2020-10-27 04:06:51,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:06:51" (2/3) ... [2020-10-27 04:06:51,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb4ae85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:06:51, skipping insertion in model container [2020-10-27 04:06:51,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:06:51" (3/3) ... [2020-10-27 04:06:51,468 INFO L111 eAbstractionObserver]: Analyzing ICFG id_b3_o2-2.c [2020-10-27 04:06:51,481 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:06:51,486 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:06:51,502 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:06:51,540 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:06:51,541 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:06:51,541 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:06:51,541 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:06:51,541 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:06:51,542 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:06:51,542 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:06:51,542 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:06:51,562 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-27 04:06:51,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-27 04:06:51,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:06:51,570 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:06:51,571 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:06:51,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:06:51,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1397195593, now seen corresponding path program 1 times [2020-10-27 04:06:51,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:06:51,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694672664] [2020-10-27 04:06:51,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:06:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:06:51,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:06:52,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:06:52,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:06:52,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:06:52,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-10-27 04:06:52,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:06:52,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:06:52,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 04:06:52,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:06:52,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:06:52,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:06:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:06:52,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:06:52,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:06:52,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:06:52,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:06:52,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:06:52,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:06:52,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:06:52,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:06:52,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:06:52,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:06:52,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:06:52,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:06:52,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:06:52,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:06:52,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:06:52,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:06:52,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:06:52,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:06:52,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:06:52,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:06:52,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:06:52,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:06:52,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:06:52,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694672664] [2020-10-27 04:06:52,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:06:52,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 04:06:52,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675022466] [2020-10-27 04:06:52,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:06:52,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:06:52,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:06:52,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:06:52,368 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 6 states. [2020-10-27 04:06:52,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:06:52,631 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-10-27 04:06:52,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:06:52,633 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-27 04:06:52,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:06:52,643 INFO L225 Difference]: With dead ends: 39 [2020-10-27 04:06:52,643 INFO L226 Difference]: Without dead ends: 21 [2020-10-27 04:06:52,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:06:52,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-27 04:06:52,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-27 04:06:52,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-27 04:06:52,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-10-27 04:06:52,701 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 15 [2020-10-27 04:06:52,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:06:52,701 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-10-27 04:06:52,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:06:52,702 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-10-27 04:06:52,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 04:06:52,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:06:52,704 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] [2020-10-27 04:06:52,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:06:52,705 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:06:52,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:06:52,706 INFO L82 PathProgramCache]: Analyzing trace with hash -630540429, now seen corresponding path program 1 times [2020-10-27 04:06:52,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:06:52,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243809046] [2020-10-27 04:06:52,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:06:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:06:52,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:06:52,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:06:53,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:06:53,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 04:06:53,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:06:53,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 564 [2020-10-27 04:06:53,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:06:53,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:06:53,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 04:06:53,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:06:53,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:06:53,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:06:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:06:53,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:06:53,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:06:53,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:06:53,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:06:53,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:06:53,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:06:53,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:06:53,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:06:53,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:06:53,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:06:53,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:06:53,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:06:53,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:06:53,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:06:53,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 04:06:53,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:06:53,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 04:06:53,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:06:53,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:06:53,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:06:53,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:06:53,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:06:53,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:06:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:06:53,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:06:53,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:06:53,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:06:53,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:06:53,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:06:53,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:06:53,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:06:53,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:06:53,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:06:53,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:06:53,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 04:06:53,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243809046] [2020-10-27 04:06:53,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:06:53,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 04:06:53,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32697585] [2020-10-27 04:06:53,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:06:53,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:06:53,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:06:53,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:06:53,468 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 6 states. [2020-10-27 04:06:53,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:06:53,663 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2020-10-27 04:06:53,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:06:53,663 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-27 04:06:53,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:06:53,665 INFO L225 Difference]: With dead ends: 34 [2020-10-27 04:06:53,665 INFO L226 Difference]: Without dead ends: 25 [2020-10-27 04:06:53,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:06:53,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-27 04:06:53,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-10-27 04:06:53,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-27 04:06:53,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-10-27 04:06:53,676 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 22 [2020-10-27 04:06:53,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:06:53,676 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-10-27 04:06:53,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:06:53,677 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-10-27 04:06:53,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 04:06:53,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:06:53,678 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] [2020-10-27 04:06:53,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:06:53,678 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:06:53,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:06:53,679 INFO L82 PathProgramCache]: Analyzing trace with hash 256963252, now seen corresponding path program 1 times [2020-10-27 04:06:53,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:06:53,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969183908] [2020-10-27 04:06:53,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:06:53,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:06:53,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:06:53,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:06:53,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 04:06:53,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:06:53,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-27 04:06:53,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:06:53,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:06:53,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 04:06:53,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:06:53,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:06:53,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:06:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:06:53,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:06:53,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:06:53,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:06:53,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:06:53,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:06:53,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:06:53,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:06:53,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:06:53,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:06:53,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:06:53,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:06:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:06:53,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:06:53,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:06:53,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 04:06:53,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:06:53,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 04:06:53,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:06:53,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:06:53,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:06:53,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:06:53,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:06:54,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:06:54,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:06:54,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:06:54,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:06:54,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:06:54,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:06:54,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:06:54,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:06:54,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:06:54,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:06:54,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:06:54,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:06:54,077 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 04:06:54,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969183908] [2020-10-27 04:06:54,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:06:54,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 04:06:54,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796417364] [2020-10-27 04:06:54,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:06:54,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:06:54,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:06:54,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:06:54,083 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 9 states. [2020-10-27 04:06:54,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:06:54,419 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2020-10-27 04:06:54,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 04:06:54,419 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-10-27 04:06:54,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:06:54,421 INFO L225 Difference]: With dead ends: 30 [2020-10-27 04:06:54,421 INFO L226 Difference]: Without dead ends: 25 [2020-10-27 04:06:54,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:06:54,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-27 04:06:54,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-27 04:06:54,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-27 04:06:54,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-10-27 04:06:54,429 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 22 [2020-10-27 04:06:54,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:06:54,430 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-10-27 04:06:54,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:06:54,430 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-10-27 04:06:54,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-27 04:06:54,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:06:54,432 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, 1] [2020-10-27 04:06:54,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:06:54,432 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:06:54,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:06:54,433 INFO L82 PathProgramCache]: Analyzing trace with hash 2059612612, now seen corresponding path program 1 times [2020-10-27 04:06:54,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:06:54,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904264810] [2020-10-27 04:06:54,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:06:54,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:06:54,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:06:54,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:06:55,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:06:55,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 04:06:55,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:06:55,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 642 [2020-10-27 04:06:55,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:06:55,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:06:55,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-27 04:06:55,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:06:55,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:06:55,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:06:55,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:06:55,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:06:55,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:06:55,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:06:55,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:06:55,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:06:55,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:06:55,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:06:55,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:06:55,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:06:55,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:06:55,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:06:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:06:55,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:06:55,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:06:55,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 04:06:55,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:06:55,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 04:06:55,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:06:55,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:06:55,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 04:06:55,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:06:55,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:06:55,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:06:55,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:06:55,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:06:55,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:06:55,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 04:06:55,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:06:55,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 04:06:55,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:06:55,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:06:55,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:06:55,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:06:55,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:06:55,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:06:55,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:06:55,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:06:55,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:06:55,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:06:55,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:06:55,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:06:55,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:06:55,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:06:55,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:06:55,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:06:55,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:06:55,338 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-27 04:06:55,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904264810] [2020-10-27 04:06:55,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:06:55,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 04:06:55,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890946712] [2020-10-27 04:06:55,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:06:55,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:06:55,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:06:55,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:06:55,341 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 9 states. [2020-10-27 04:06:55,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:06:55,604 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2020-10-27 04:06:55,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 04:06:55,604 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-27 04:06:55,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:06:55,606 INFO L225 Difference]: With dead ends: 38 [2020-10-27 04:06:55,606 INFO L226 Difference]: Without dead ends: 29 [2020-10-27 04:06:55,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:06:55,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-27 04:06:55,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-10-27 04:06:55,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-27 04:06:55,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-10-27 04:06:55,614 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 29 [2020-10-27 04:06:55,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:06:55,615 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-10-27 04:06:55,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:06:55,615 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-10-27 04:06:55,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-27 04:06:55,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:06:55,616 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:06:55,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:06:55,617 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:06:55,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:06:55,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1347851003, now seen corresponding path program 2 times [2020-10-27 04:06:55,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:06:55,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854511054] [2020-10-27 04:06:55,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:06:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 04:06:55,631 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 04:06:55,632 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 04:06:55,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:06:55,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 04:06:55 BoogieIcfgContainer [2020-10-27 04:06:55,654 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 04:06:55,657 INFO L168 Benchmark]: Toolchain (without parser) took 4866.33 ms. Allocated memory was 157.3 MB in the beginning and 205.5 MB in the end (delta: 48.2 MB). Free memory was 132.3 MB in the beginning and 173.3 MB in the end (delta: -41.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 8.0 GB. [2020-10-27 04:06:55,658 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 157.3 MB. Free memory is still 129.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 04:06:55,658 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.93 ms. Allocated memory is still 157.3 MB. Free memory was 131.5 MB in the beginning and 122.6 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-27 04:06:55,659 INFO L168 Benchmark]: Boogie Preprocessor took 31.61 ms. Allocated memory is still 157.3 MB. Free memory was 122.6 MB in the beginning and 121.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 04:06:55,660 INFO L168 Benchmark]: RCFGBuilder took 346.17 ms. Allocated memory is still 157.3 MB. Free memory was 121.3 MB in the beginning and 108.4 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-27 04:06:55,661 INFO L168 Benchmark]: TraceAbstraction took 4193.43 ms. Allocated memory was 157.3 MB in the beginning and 205.5 MB in the end (delta: 48.2 MB). Free memory was 107.9 MB in the beginning and 173.3 MB in the end (delta: -65.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 04:06:55,665 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 157.3 MB. Free memory is still 129.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 279.93 ms. Allocated memory is still 157.3 MB. Free memory was 131.5 MB in the beginning and 122.6 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.61 ms. Allocated memory is still 157.3 MB. Free memory was 122.6 MB in the beginning and 121.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 346.17 ms. Allocated memory is still 157.3 MB. Free memory was 121.3 MB in the beginning and 108.4 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4193.43 ms. Allocated memory was 157.3 MB in the beginning and 205.5 MB in the end (delta: 48.2 MB). Free memory was 107.9 MB in the beginning and 173.3 MB in the end (delta: -65.4 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: [L14] int input = __VERIFIER_nondet_int(); [L15] CALL, EXPR id(input) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id((unsigned int)x-1) [L7] COND FALSE !(x==0) [L8] CALL, EXPR id((unsigned int)x-1) [L7] COND TRUE x==0 [L7] return 0; [L8] RET, EXPR id((unsigned int)x-1) [L8] int ret = id((unsigned int)x-1) + 1; [L9] COND FALSE !(ret > 3) [L10] return ret; [L8] RET, EXPR id((unsigned int)x-1) [L8] int ret = id((unsigned int)x-1) + 1; [L9] COND FALSE !(ret > 3) [L10] return ret; [L15] RET, EXPR id(input) [L15] int result = id(input); [L16] COND TRUE result == 2 [L17] CALL reach_error() [L4] __assert_fail("0", "id_b3_o2-2.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.1s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 70 SDtfs, 72 SDslu, 113 SDs, 0 SdLazy, 248 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 5670 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 17/23 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...