/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/Addition01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 17:12:55,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:12:55,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:12:55,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:12:55,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:12:55,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:12:55,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:12:55,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:12:55,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:12:55,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:12:55,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:12:55,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:12:55,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:12:55,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:12:55,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:12:55,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:12:55,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:12:55,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:12:55,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:12:55,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:12:55,983 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:12:55,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:12:55,986 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:12:55,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:12:55,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:12:55,997 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:12:55,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:12:56,001 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:12:56,001 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:12:56,005 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:12:56,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:12:56,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:12:56,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:12:56,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:12:56,010 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:12:56,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:12:56,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:12:56,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:12:56,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:12:56,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:12:56,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:12:56,015 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 17:12:56,061 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:12:56,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:12:56,063 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:12:56,063 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:12:56,063 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:12:56,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:12:56,064 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:12:56,064 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:12:56,064 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:12:56,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:12:56,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:12:56,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:12:56,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:12:56,065 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:12:56,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:12:56,066 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:12:56,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:12:56,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:12:56,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:12:56,066 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:12:56,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:12:56,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:12:56,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:12:56,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:12:56,067 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:12:56,067 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:12:56,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:12:56,068 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:12:56,068 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:12:56,068 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:12:56,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:12:56,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:12:56,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:12:56,457 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:12:56,458 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:12:56,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition01-2.c [2020-10-28 17:12:56,547 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96914cdcc/44ce21d4bfc344738958f032297189c2/FLAGe5bca2f1a [2020-10-28 17:12:57,053 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:12:57,054 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Addition01-2.c [2020-10-28 17:12:57,060 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96914cdcc/44ce21d4bfc344738958f032297189c2/FLAGe5bca2f1a [2020-10-28 17:12:57,438 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96914cdcc/44ce21d4bfc344738958f032297189c2 [2020-10-28 17:12:57,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:12:57,447 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:12:57,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:12:57,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:12:57,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:12:57,453 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:12:57" (1/1) ... [2020-10-28 17:12:57,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46e9cad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:57, skipping insertion in model container [2020-10-28 17:12:57,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:12:57" (1/1) ... [2020-10-28 17:12:57,470 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:12:57,487 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:12:57,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:12:57,658 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:12:57,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:12:57,692 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:12:57,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:57 WrapperNode [2020-10-28 17:12:57,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:12:57,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:12:57,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:12:57,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:12:57,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:57" (1/1) ... [2020-10-28 17:12:57,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:57" (1/1) ... [2020-10-28 17:12:57,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:57" (1/1) ... [2020-10-28 17:12:57,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:57" (1/1) ... [2020-10-28 17:12:57,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:57" (1/1) ... [2020-10-28 17:12:57,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:57" (1/1) ... [2020-10-28 17:12:57,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:57" (1/1) ... [2020-10-28 17:12:57,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:12:57,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:12:57,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:12:57,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:12:57,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:57" (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 17:12:57,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:12:57,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:12:57,821 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:12:57,821 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-10-28 17:12:57,821 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:12:57,821 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:12:57,822 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:12:57,822 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:12:57,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:12:57,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 17:12:57,822 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-10-28 17:12:57,823 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:12:57,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:12:57,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:12:57,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:12:57,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:12:57,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:12:57,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:12:58,275 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:12:58,275 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 17:12:58,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:12:58 BoogieIcfgContainer [2020-10-28 17:12:58,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:12:58,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:12:58,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:12:58,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:12:58,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:12:57" (1/3) ... [2020-10-28 17:12:58,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc47465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:12:58, skipping insertion in model container [2020-10-28 17:12:58,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:57" (2/3) ... [2020-10-28 17:12:58,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc47465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:12:58, skipping insertion in model container [2020-10-28 17:12:58,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:12:58" (3/3) ... [2020-10-28 17:12:58,290 INFO L111 eAbstractionObserver]: Analyzing ICFG Addition01-2.c [2020-10-28 17:12:58,302 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:12:58,308 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:12:58,321 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:12:58,367 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:12:58,367 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:12:58,367 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:12:58,367 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:12:58,367 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:12:58,367 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:12:58,368 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:12:58,368 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:12:58,409 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-28 17:12:58,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-28 17:12:58,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:12:58,418 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:12:58,418 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:12:58,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:12:58,427 INFO L82 PathProgramCache]: Analyzing trace with hash 2040802546, now seen corresponding path program 1 times [2020-10-28 17:12:58,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:12:58,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925310307] [2020-10-28 17:12:58,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:12:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:58,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:59,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:59,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 17:12:59,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:59,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 441 [2020-10-28 17:12:59,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:59,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:59,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:12:59,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:12:59,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:12:59,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:12:59,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:12:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:59,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:59,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:59,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:12:59,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:59,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:12:59,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:59,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:59,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:59,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:59,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:59,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:12:59,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 17:12:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:59,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:59,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:59,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:12:59,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:59,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:12:59,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:59,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:59,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:12:59,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:59,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:12:59,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:12:59,361 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 17:12:59,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925310307] [2020-10-28 17:12:59,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:12:59,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 17:12:59,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119759561] [2020-10-28 17:12:59,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 17:12:59,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:12:59,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 17:12:59,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:12:59,386 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 7 states. [2020-10-28 17:12:59,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:12:59,952 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-10-28 17:12:59,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 17:12:59,955 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-10-28 17:12:59,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:12:59,964 INFO L225 Difference]: With dead ends: 44 [2020-10-28 17:12:59,965 INFO L226 Difference]: Without dead ends: 26 [2020-10-28 17:12:59,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:12:59,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-28 17:13:00,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-28 17:13:00,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-28 17:13:00,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2020-10-28 17:13:00,027 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 17 [2020-10-28 17:13:00,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:13:00,028 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2020-10-28 17:13:00,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 17:13:00,028 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2020-10-28 17:13:00,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-28 17:13:00,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:13:00,031 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:13:00,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:13:00,031 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:13:00,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:13:00,032 INFO L82 PathProgramCache]: Analyzing trace with hash -165285543, now seen corresponding path program 1 times [2020-10-28 17:13:00,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:13:00,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227793373] [2020-10-28 17:13:00,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:13:00,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:13:00,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:00,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:00,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:13:00,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 17:13:00,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:13:00,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-28 17:13:00,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:13:00,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:13:00,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:13:00,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 17:13:00,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 17:13:00,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:13:00,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:13:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:13:00,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:00,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:13:00,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:13:00,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:13:00,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:13:00,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:13:00,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:13:00,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:13:00,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:13:00,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:13:00,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:13:00,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 17:13:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:13:00,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:00,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:13:00,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:13:00,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:13:00,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:13:00,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:13:00,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:13:00,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:13:00,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:13:00,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 17:13:00,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:13:00,490 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 17:13:00,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227793373] [2020-10-28 17:13:00,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:13:00,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 17:13:00,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539813310] [2020-10-28 17:13:00,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 17:13:00,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:13:00,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 17:13:00,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:13:00,494 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 5 states. [2020-10-28 17:13:00,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:13:00,876 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2020-10-28 17:13:00,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 17:13:00,878 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-28 17:13:00,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:13:00,879 INFO L225 Difference]: With dead ends: 37 [2020-10-28 17:13:00,879 INFO L226 Difference]: Without dead ends: 28 [2020-10-28 17:13:00,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:13:00,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-28 17:13:00,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-10-28 17:13:00,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-28 17:13:00,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-28 17:13:00,892 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 19 [2020-10-28 17:13:00,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:13:00,892 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-28 17:13:00,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 17:13:00,892 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-28 17:13:00,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 17:13:00,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:13:00,894 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, 1, 1] [2020-10-28 17:13:00,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 17:13:00,895 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:13:00,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:13:00,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1241281567, now seen corresponding path program 1 times [2020-10-28 17:13:00,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:13:00,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26903290] [2020-10-28 17:13:00,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:13:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:13:00,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:01,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:13:01,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 17:13:01,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:13:01,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-28 17:13:01,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:13:01,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:13:01,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:13:01,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:13:01,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 17:13:01,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:13:01,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:13:01,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:13:01,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:01,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:13:01,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:13:01,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:13:01,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:13:01,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:13:01,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:13:01,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:13:01,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:13:01,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:13:01,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:13:01,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 17:13:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:13:01,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:01,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:13:01,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:13:01,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:13:01,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 17:13:01,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:13:01,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:13:01,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:13:01,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:13:01,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:13:01,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:13:01,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:13:01,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:13:01,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:01,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:13:01,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:13:01,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:13:01,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:13:01,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:13:01,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:13:01,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:13:01,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:13:01,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:13:01,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:13:01,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 17:13:01,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26903290] [2020-10-28 17:13:01,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:13:01,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 17:13:01,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980674456] [2020-10-28 17:13:01,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:13:01,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:13:01,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:13:01,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:13:01,368 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 10 states. [2020-10-28 17:13:01,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:13:01,823 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2020-10-28 17:13:01,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 17:13:01,824 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-10-28 17:13:01,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:13:01,825 INFO L225 Difference]: With dead ends: 34 [2020-10-28 17:13:01,825 INFO L226 Difference]: Without dead ends: 29 [2020-10-28 17:13:01,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-10-28 17:13:01,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-28 17:13:01,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-10-28 17:13:01,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-28 17:13:01,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-28 17:13:01,835 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 24 [2020-10-28 17:13:01,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:13:01,835 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-28 17:13:01,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:13:01,835 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-28 17:13:01,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-28 17:13:01,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:13:01,837 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, 1, 1, 1] [2020-10-28 17:13:01,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 17:13:01,837 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:13:01,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:13:01,838 INFO L82 PathProgramCache]: Analyzing trace with hash 583251290, now seen corresponding path program 1 times [2020-10-28 17:13:01,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:13:01,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488786588] [2020-10-28 17:13:01,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:13:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:13:01,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:01,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:01,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:01,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:02,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:13:02,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 17:13:02,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:13:02,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 566 [2020-10-28 17:13:02,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:13:02,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:13:02,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:13:02,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 17:13:02,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:13:02,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:13:02,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:13:02,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:13:02,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:02,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:13:02,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:13:02,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:13:02,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:13:02,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:13:02,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:13:02,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:13:02,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:13:02,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:13:02,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:13:02,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 17:13:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:13:02,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:02,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:02,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:02,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:13:02,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 17:13:02,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:13:02,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 17:13:02,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:13:02,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:13:02,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:13:02,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:13:02,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:13:02,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:13:02,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:13:02,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:13:02,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:02,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:13:02,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:13:02,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:13:02,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:13:02,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:13:02,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:13:02,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:13:02,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:13:02,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:13:02,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:13:02,610 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 17:13:02,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488786588] [2020-10-28 17:13:02,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:13:02,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 17:13:02,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576382879] [2020-10-28 17:13:02,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 17:13:02,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:13:02,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 17:13:02,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:13:02,613 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 7 states. [2020-10-28 17:13:02,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:13:02,906 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2020-10-28 17:13:02,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 17:13:02,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-28 17:13:02,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:13:02,907 INFO L225 Difference]: With dead ends: 29 [2020-10-28 17:13:02,908 INFO L226 Difference]: Without dead ends: 0 [2020-10-28 17:13:02,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:13:02,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-28 17:13:02,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-28 17:13:02,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-28 17:13:02,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-28 17:13:02,910 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-10-28 17:13:02,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:13:02,910 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-28 17:13:02,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 17:13:02,910 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-28 17:13:02,910 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-28 17:13:02,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 17:13:02,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-28 17:13:03,116 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-28 17:13:03,116 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-28 17:13:03,116 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-28 17:13:03,117 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-28 17:13:03,117 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-28 17:13:03,117 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-28 17:13:03,117 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-28 17:13:03,117 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-28 17:13:03,117 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-28 17:13:03,118 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-28 17:13:03,118 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-28 17:13:03,118 INFO L274 CegarLoopResult]: For program point L30(lines 30 34) no Hoare annotation was computed. [2020-10-28 17:13:03,118 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 28 47) the Hoare annotation is: true [2020-10-28 17:13:03,118 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 28 47) no Hoare annotation was computed. [2020-10-28 17:13:03,118 INFO L270 CegarLoopResult]: At program point L45(line 45) the Hoare annotation is: false [2020-10-28 17:13:03,118 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 28 47) no Hoare annotation was computed. [2020-10-28 17:13:03,118 INFO L274 CegarLoopResult]: For program point L45-1(line 45) no Hoare annotation was computed. [2020-10-28 17:13:03,119 INFO L274 CegarLoopResult]: For program point L42(lines 42 46) no Hoare annotation was computed. [2020-10-28 17:13:03,119 INFO L270 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: (<= 0 main_~n~0) [2020-10-28 17:13:03,119 INFO L274 CegarLoopResult]: For program point L41-1(line 41) no Hoare annotation was computed. [2020-10-28 17:13:03,119 INFO L274 CegarLoopResult]: For program point L36(lines 36 40) no Hoare annotation was computed. [2020-10-28 17:13:03,119 INFO L270 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (<= (+ addition_~n 1) 0) (= |addition_#in~m| addition_~m) (= |addition_#in~n| addition_~n)) [2020-10-28 17:13:03,119 INFO L274 CegarLoopResult]: For program point L22(lines 22 24) no Hoare annotation was computed. [2020-10-28 17:13:03,120 INFO L274 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-10-28 17:13:03,120 INFO L274 CegarLoopResult]: For program point additionFINAL(lines 15 25) no Hoare annotation was computed. [2020-10-28 17:13:03,120 INFO L270 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (and (= |addition_#in~m| addition_~m) (= |addition_#in~n| addition_~n) (not (= addition_~n 0))) [2020-10-28 17:13:03,120 INFO L274 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-10-28 17:13:03,120 INFO L274 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-10-28 17:13:03,120 INFO L274 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-10-28 17:13:03,120 INFO L277 CegarLoopResult]: At program point additionENTRY(lines 15 25) the Hoare annotation is: true [2020-10-28 17:13:03,120 INFO L274 CegarLoopResult]: For program point additionEXIT(lines 15 25) no Hoare annotation was computed. [2020-10-28 17:13:03,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 05:13:03 BoogieIcfgContainer [2020-10-28 17:13:03,126 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 17:13:03,129 INFO L168 Benchmark]: Toolchain (without parser) took 5685.00 ms. Allocated memory was 164.6 MB in the beginning and 205.5 MB in the end (delta: 40.9 MB). Free memory was 139.5 MB in the beginning and 124.8 MB in the end (delta: 14.7 MB). Peak memory consumption was 56.9 MB. Max. memory is 8.0 GB. [2020-10-28 17:13:03,129 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 164.6 MB. Free memory is still 136.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 17:13:03,130 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.85 ms. Allocated memory is still 164.6 MB. Free memory was 138.8 MB in the beginning and 129.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-28 17:13:03,131 INFO L168 Benchmark]: Boogie Preprocessor took 33.01 ms. Allocated memory is still 164.6 MB. Free memory was 129.1 MB in the beginning and 127.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-28 17:13:03,132 INFO L168 Benchmark]: RCFGBuilder took 548.74 ms. Allocated memory is still 164.6 MB. Free memory was 127.6 MB in the beginning and 113.7 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-28 17:13:03,133 INFO L168 Benchmark]: TraceAbstraction took 4845.88 ms. Allocated memory was 164.6 MB in the beginning and 205.5 MB in the end (delta: 40.9 MB). Free memory was 113.3 MB in the beginning and 124.8 MB in the end (delta: -11.5 MB). Peak memory consumption was 30.7 MB. Max. memory is 8.0 GB. [2020-10-28 17:13:03,136 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 164.6 MB. Free memory is still 136.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 244.85 ms. Allocated memory is still 164.6 MB. Free memory was 138.8 MB in the beginning and 129.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.01 ms. Allocated memory is still 164.6 MB. Free memory was 129.1 MB in the beginning and 127.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 548.74 ms. Allocated memory is still 164.6 MB. Free memory was 127.6 MB in the beginning and 113.7 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4845.88 ms. Allocated memory was 164.6 MB in the beginning and 205.5 MB in the end (delta: 40.9 MB). Free memory was 113.3 MB in the beginning and 124.8 MB in the end (delta: -11.5 MB). Peak memory consumption was 30.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.5s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 78 SDtfs, 113 SDslu, 96 SDs, 0 SdLazy, 325 SolverSat, 57 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, 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: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 19 PreInvPairs, 19 NumberOfFragments, 63 HoareAnnotationTreeSize, 19 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 181 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 81 ConstructedInterpolants, 0 QuantifiedInterpolants, 8676 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 5/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...