/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/recHanoi02-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 22:08:17,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 22:08:17,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 22:08:17,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 22:08:17,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 22:08:17,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 22:08:17,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 22:08:17,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 22:08:17,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 22:08:17,872 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 22:08:17,873 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 22:08:17,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 22:08:17,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 22:08:17,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 22:08:17,876 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 22:08:17,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 22:08:17,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 22:08:17,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 22:08:17,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 22:08:17,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 22:08:17,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 22:08:17,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 22:08:17,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 22:08:17,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 22:08:17,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 22:08:17,890 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 22:08:17,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 22:08:17,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 22:08:17,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 22:08:17,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 22:08:17,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 22:08:17,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 22:08:17,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 22:08:17,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 22:08:17,898 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 22:08:17,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 22:08:17,899 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 22:08:17,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 22:08:17,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 22:08:17,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 22:08:17,905 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 22:08:17,906 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-17 22:08:17,923 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 22:08:17,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 22:08:17,925 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 22:08:17,925 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 22:08:17,925 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 22:08:17,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 22:08:17,926 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 22:08:17,926 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 22:08:17,926 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 22:08:17,926 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 22:08:17,927 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 22:08:17,927 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 22:08:17,927 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 22:08:17,927 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 22:08:17,927 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 22:08:17,928 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 22:08:17,928 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 22:08:17,928 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 22:08:17,928 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 22:08:17,929 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 22:08:17,929 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 22:08:17,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 22:08:17,929 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 22:08:17,929 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 22:08:17,930 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 22:08:17,930 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 22:08:17,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 22:08:17,930 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 22:08:17,930 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 22:08:17,931 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 22:08:18,254 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 22:08:18,269 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 22:08:18,273 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 22:08:18,274 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 22:08:18,275 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 22:08:18,275 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/recHanoi02-2.c [2020-07-17 22:08:18,342 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5974b6c74/869810077618431c8c1a290adbf07b6a/FLAGb2b032480 [2020-07-17 22:08:18,781 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 22:08:18,782 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/recHanoi02-2.c [2020-07-17 22:08:18,798 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5974b6c74/869810077618431c8c1a290adbf07b6a/FLAGb2b032480 [2020-07-17 22:08:19,129 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5974b6c74/869810077618431c8c1a290adbf07b6a [2020-07-17 22:08:19,141 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 22:08:19,144 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 22:08:19,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 22:08:19,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 22:08:19,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 22:08:19,152 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:08:19" (1/1) ... [2020-07-17 22:08:19,155 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b044783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:08:19, skipping insertion in model container [2020-07-17 22:08:19,155 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:08:19" (1/1) ... [2020-07-17 22:08:19,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 22:08:19,182 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 22:08:19,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:08:19,365 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 22:08:19,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:08:19,400 INFO L208 MainTranslator]: Completed translation [2020-07-17 22:08:19,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:08:19 WrapperNode [2020-07-17 22:08:19,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 22:08:19,402 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 22:08:19,402 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 22:08:19,402 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 22:08:19,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:08:19" (1/1) ... [2020-07-17 22:08:19,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:08:19" (1/1) ... [2020-07-17 22:08:19,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:08:19" (1/1) ... [2020-07-17 22:08:19,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:08:19" (1/1) ... [2020-07-17 22:08:19,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:08:19" (1/1) ... [2020-07-17 22:08:19,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:08:19" (1/1) ... [2020-07-17 22:08:19,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:08:19" (1/1) ... [2020-07-17 22:08:19,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 22:08:19,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 22:08:19,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 22:08:19,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 22:08:19,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:08:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-17 22:08:19,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 22:08:19,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 22:08:19,587 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-07-17 22:08:19,587 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 22:08:19,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 22:08:19,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 22:08:19,588 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-07-17 22:08:19,588 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 22:08:19,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 22:08:19,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 22:08:19,832 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 22:08:19,832 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-17 22:08:19,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:08:19 BoogieIcfgContainer [2020-07-17 22:08:19,837 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 22:08:19,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 22:08:19,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 22:08:19,843 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 22:08:19,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 10:08:19" (1/3) ... [2020-07-17 22:08:19,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b65f74a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:08:19, skipping insertion in model container [2020-07-17 22:08:19,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:08:19" (2/3) ... [2020-07-17 22:08:19,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b65f74a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:08:19, skipping insertion in model container [2020-07-17 22:08:19,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:08:19" (3/3) ... [2020-07-17 22:08:19,849 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi02-2.c [2020-07-17 22:08:19,862 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 22:08:19,872 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 22:08:19,892 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 22:08:19,924 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 22:08:19,924 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 22:08:19,924 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 22:08:19,925 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 22:08:19,925 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 22:08:19,925 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 22:08:19,925 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 22:08:19,925 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 22:08:19,949 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-07-17 22:08:19,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-17 22:08:19,957 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:08:19,959 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:08:19,959 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:08:19,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:08:19,967 INFO L82 PathProgramCache]: Analyzing trace with hash 913793727, now seen corresponding path program 1 times [2020-07-17 22:08:19,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:08:19,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922962164] [2020-07-17 22:08:19,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:08:20,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:08:20,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:08:20,245 INFO L280 TraceCheckUtils]: 0: Hoare triple {24#true} assume true; {24#true} is VALID [2020-07-17 22:08:20,245 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {24#true} {24#true} #30#return; {24#true} is VALID [2020-07-17 22:08:20,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:08:20,280 INFO L280 TraceCheckUtils]: 0: Hoare triple {24#true} ~n := #in~n; {24#true} is VALID [2020-07-17 22:08:20,282 INFO L280 TraceCheckUtils]: 1: Hoare triple {24#true} assume 1 == ~n;#res := 1; {34#(<= 1 |hanoi_#res|)} is VALID [2020-07-17 22:08:20,283 INFO L280 TraceCheckUtils]: 2: Hoare triple {34#(<= 1 |hanoi_#res|)} assume true; {34#(<= 1 |hanoi_#res|)} is VALID [2020-07-17 22:08:20,285 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {34#(<= 1 |hanoi_#res|)} {24#true} #34#return; {32#(<= 1 |main_#t~ret2|)} is VALID [2020-07-17 22:08:20,286 INFO L263 TraceCheckUtils]: 0: Hoare triple {24#true} call ULTIMATE.init(); {24#true} is VALID [2020-07-17 22:08:20,286 INFO L280 TraceCheckUtils]: 1: Hoare triple {24#true} assume true; {24#true} is VALID [2020-07-17 22:08:20,287 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {24#true} {24#true} #30#return; {24#true} is VALID [2020-07-17 22:08:20,287 INFO L263 TraceCheckUtils]: 3: Hoare triple {24#true} call #t~ret3 := main(); {24#true} is VALID [2020-07-17 22:08:20,287 INFO L280 TraceCheckUtils]: 4: Hoare triple {24#true} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~n~0 := #t~nondet1;havoc #t~nondet1; {24#true} is VALID [2020-07-17 22:08:20,288 INFO L280 TraceCheckUtils]: 5: Hoare triple {24#true} assume !(~n~0 < 1 || ~n~0 > 31); {24#true} is VALID [2020-07-17 22:08:20,288 INFO L263 TraceCheckUtils]: 6: Hoare triple {24#true} call #t~ret2 := hanoi(~n~0); {24#true} is VALID [2020-07-17 22:08:20,289 INFO L280 TraceCheckUtils]: 7: Hoare triple {24#true} ~n := #in~n; {24#true} is VALID [2020-07-17 22:08:20,291 INFO L280 TraceCheckUtils]: 8: Hoare triple {24#true} assume 1 == ~n;#res := 1; {34#(<= 1 |hanoi_#res|)} is VALID [2020-07-17 22:08:20,293 INFO L280 TraceCheckUtils]: 9: Hoare triple {34#(<= 1 |hanoi_#res|)} assume true; {34#(<= 1 |hanoi_#res|)} is VALID [2020-07-17 22:08:20,296 INFO L275 TraceCheckUtils]: 10: Hoare quadruple {34#(<= 1 |hanoi_#res|)} {24#true} #34#return; {32#(<= 1 |main_#t~ret2|)} is VALID [2020-07-17 22:08:20,297 INFO L280 TraceCheckUtils]: 11: Hoare triple {32#(<= 1 |main_#t~ret2|)} assume -2147483648 <= #t~ret2 && #t~ret2 <= 2147483647;~result~0 := #t~ret2;havoc #t~ret2; {33#(<= 1 main_~result~0)} is VALID [2020-07-17 22:08:20,299 INFO L280 TraceCheckUtils]: 12: Hoare triple {33#(<= 1 main_~result~0)} assume !(~result~0 >= 0); {25#false} is VALID [2020-07-17 22:08:20,299 INFO L280 TraceCheckUtils]: 13: Hoare triple {25#false} assume !false; {25#false} is VALID [2020-07-17 22:08:20,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:08:20,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922962164] [2020-07-17 22:08:20,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:08:20,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 22:08:20,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138699320] [2020-07-17 22:08:20,311 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-17 22:08:20,314 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:08:20,317 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-17 22:08:20,363 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 14 edges. 14 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:08:20,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 22:08:20,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:08:20,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 22:08:20,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 22:08:20,375 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 5 states. [2020-07-17 22:08:20,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:08:20,554 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2020-07-17 22:08:20,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 22:08:20,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-17 22:08:20,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:08:20,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-17 22:08:20,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 37 transitions. [2020-07-17 22:08:20,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-17 22:08:20,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 37 transitions. [2020-07-17 22:08:20,572 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 37 transitions. [2020-07-17 22:08:20,635 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 37 edges. 37 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:08:20,648 INFO L225 Difference]: With dead ends: 33 [2020-07-17 22:08:20,648 INFO L226 Difference]: Without dead ends: 19 [2020-07-17 22:08:20,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 22:08:20,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-07-17 22:08:20,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-07-17 22:08:20,698 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:08:20,699 INFO L82 GeneralOperation]: Start isEquivalent. First operand 19 states. Second operand 19 states. [2020-07-17 22:08:20,700 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand 19 states. [2020-07-17 22:08:20,700 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 19 states. [2020-07-17 22:08:20,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:08:20,706 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-07-17 22:08:20,706 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-07-17 22:08:20,707 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:08:20,707 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:08:20,707 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand 19 states. [2020-07-17 22:08:20,708 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 19 states. [2020-07-17 22:08:20,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:08:20,712 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-07-17 22:08:20,712 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-07-17 22:08:20,713 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:08:20,713 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:08:20,713 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:08:20,714 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:08:20,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-17 22:08:20,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-07-17 22:08:20,718 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2020-07-17 22:08:20,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:08:20,719 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-07-17 22:08:20,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 22:08:20,719 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-07-17 22:08:20,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-17 22:08:20,721 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:08:20,721 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:08:20,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 22:08:20,722 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:08:20,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:08:20,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1998834103, now seen corresponding path program 1 times [2020-07-17 22:08:20,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:08:20,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610714011] [2020-07-17 22:08:20,724 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:08:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:08:20,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:08:20,848 INFO L280 TraceCheckUtils]: 0: Hoare triple {141#true} assume true; {141#true} is VALID [2020-07-17 22:08:20,848 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {141#true} {141#true} #30#return; {141#true} is VALID [2020-07-17 22:08:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:08:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:08:21,005 INFO L280 TraceCheckUtils]: 0: Hoare triple {141#true} ~n := #in~n; {141#true} is VALID [2020-07-17 22:08:21,007 INFO L280 TraceCheckUtils]: 1: Hoare triple {141#true} assume 1 == ~n;#res := 1; {163#(and (<= |hanoi_#res| 1) (<= 1 |hanoi_#res|))} is VALID [2020-07-17 22:08:21,009 INFO L280 TraceCheckUtils]: 2: Hoare triple {163#(and (<= |hanoi_#res| 1) (<= 1 |hanoi_#res|))} assume true; {163#(and (<= |hanoi_#res| 1) (<= 1 |hanoi_#res|))} is VALID [2020-07-17 22:08:21,011 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {163#(and (<= |hanoi_#res| 1) (<= 1 |hanoi_#res|))} {141#true} #28#return; {161#(= 1 |hanoi_#t~ret0|)} is VALID [2020-07-17 22:08:21,012 INFO L280 TraceCheckUtils]: 0: Hoare triple {141#true} ~n := #in~n; {141#true} is VALID [2020-07-17 22:08:21,012 INFO L280 TraceCheckUtils]: 1: Hoare triple {141#true} assume !(1 == ~n); {141#true} is VALID [2020-07-17 22:08:21,013 INFO L263 TraceCheckUtils]: 2: Hoare triple {141#true} call #t~ret0 := hanoi(~n - 1); {141#true} is VALID [2020-07-17 22:08:21,014 INFO L280 TraceCheckUtils]: 3: Hoare triple {141#true} ~n := #in~n; {141#true} is VALID [2020-07-17 22:08:21,015 INFO L280 TraceCheckUtils]: 4: Hoare triple {141#true} assume 1 == ~n;#res := 1; {163#(and (<= |hanoi_#res| 1) (<= 1 |hanoi_#res|))} is VALID [2020-07-17 22:08:21,017 INFO L280 TraceCheckUtils]: 5: Hoare triple {163#(and (<= |hanoi_#res| 1) (<= 1 |hanoi_#res|))} assume true; {163#(and (<= |hanoi_#res| 1) (<= 1 |hanoi_#res|))} is VALID [2020-07-17 22:08:21,020 INFO L275 TraceCheckUtils]: 6: Hoare quadruple {163#(and (<= |hanoi_#res| 1) (<= 1 |hanoi_#res|))} {141#true} #28#return; {161#(= 1 |hanoi_#t~ret0|)} is VALID [2020-07-17 22:08:21,021 INFO L280 TraceCheckUtils]: 7: Hoare triple {161#(= 1 |hanoi_#t~ret0|)} assume -2147483648 <= #t~ret0 && #t~ret0 <= 2147483647;#res := 1 + 2 * #t~ret0;havoc #t~ret0; {162#(<= 3 |hanoi_#res|)} is VALID [2020-07-17 22:08:21,022 INFO L280 TraceCheckUtils]: 8: Hoare triple {162#(<= 3 |hanoi_#res|)} assume true; {162#(<= 3 |hanoi_#res|)} is VALID [2020-07-17 22:08:21,026 INFO L275 TraceCheckUtils]: 9: Hoare quadruple {162#(<= 3 |hanoi_#res|)} {141#true} #34#return; {155#(<= 3 |main_#t~ret2|)} is VALID [2020-07-17 22:08:21,027 INFO L263 TraceCheckUtils]: 0: Hoare triple {141#true} call ULTIMATE.init(); {141#true} is VALID [2020-07-17 22:08:21,028 INFO L280 TraceCheckUtils]: 1: Hoare triple {141#true} assume true; {141#true} is VALID [2020-07-17 22:08:21,028 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {141#true} {141#true} #30#return; {141#true} is VALID [2020-07-17 22:08:21,028 INFO L263 TraceCheckUtils]: 3: Hoare triple {141#true} call #t~ret3 := main(); {141#true} is VALID [2020-07-17 22:08:21,029 INFO L280 TraceCheckUtils]: 4: Hoare triple {141#true} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~n~0 := #t~nondet1;havoc #t~nondet1; {141#true} is VALID [2020-07-17 22:08:21,031 INFO L280 TraceCheckUtils]: 5: Hoare triple {141#true} assume !(~n~0 < 1 || ~n~0 > 31); {141#true} is VALID [2020-07-17 22:08:21,032 INFO L263 TraceCheckUtils]: 6: Hoare triple {141#true} call #t~ret2 := hanoi(~n~0); {141#true} is VALID [2020-07-17 22:08:21,032 INFO L280 TraceCheckUtils]: 7: Hoare triple {141#true} ~n := #in~n; {141#true} is VALID [2020-07-17 22:08:21,032 INFO L280 TraceCheckUtils]: 8: Hoare triple {141#true} assume !(1 == ~n); {141#true} is VALID [2020-07-17 22:08:21,033 INFO L263 TraceCheckUtils]: 9: Hoare triple {141#true} call #t~ret0 := hanoi(~n - 1); {141#true} is VALID [2020-07-17 22:08:21,034 INFO L280 TraceCheckUtils]: 10: Hoare triple {141#true} ~n := #in~n; {141#true} is VALID [2020-07-17 22:08:21,036 INFO L280 TraceCheckUtils]: 11: Hoare triple {141#true} assume 1 == ~n;#res := 1; {163#(and (<= |hanoi_#res| 1) (<= 1 |hanoi_#res|))} is VALID [2020-07-17 22:08:21,037 INFO L280 TraceCheckUtils]: 12: Hoare triple {163#(and (<= |hanoi_#res| 1) (<= 1 |hanoi_#res|))} assume true; {163#(and (<= |hanoi_#res| 1) (<= 1 |hanoi_#res|))} is VALID [2020-07-17 22:08:21,039 INFO L275 TraceCheckUtils]: 13: Hoare quadruple {163#(and (<= |hanoi_#res| 1) (<= 1 |hanoi_#res|))} {141#true} #28#return; {161#(= 1 |hanoi_#t~ret0|)} is VALID [2020-07-17 22:08:21,045 INFO L280 TraceCheckUtils]: 14: Hoare triple {161#(= 1 |hanoi_#t~ret0|)} assume -2147483648 <= #t~ret0 && #t~ret0 <= 2147483647;#res := 1 + 2 * #t~ret0;havoc #t~ret0; {162#(<= 3 |hanoi_#res|)} is VALID [2020-07-17 22:08:21,046 INFO L280 TraceCheckUtils]: 15: Hoare triple {162#(<= 3 |hanoi_#res|)} assume true; {162#(<= 3 |hanoi_#res|)} is VALID [2020-07-17 22:08:21,047 INFO L275 TraceCheckUtils]: 16: Hoare quadruple {162#(<= 3 |hanoi_#res|)} {141#true} #34#return; {155#(<= 3 |main_#t~ret2|)} is VALID [2020-07-17 22:08:21,049 INFO L280 TraceCheckUtils]: 17: Hoare triple {155#(<= 3 |main_#t~ret2|)} assume -2147483648 <= #t~ret2 && #t~ret2 <= 2147483647;~result~0 := #t~ret2;havoc #t~ret2; {156#(<= 3 main_~result~0)} is VALID [2020-07-17 22:08:21,051 INFO L280 TraceCheckUtils]: 18: Hoare triple {156#(<= 3 main_~result~0)} assume !(~result~0 >= 0); {142#false} is VALID [2020-07-17 22:08:21,051 INFO L280 TraceCheckUtils]: 19: Hoare triple {142#false} assume !false; {142#false} is VALID [2020-07-17 22:08:21,053 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-17 22:08:21,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610714011] [2020-07-17 22:08:21,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060585761] [2020-07-17 22:08:21,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 22:08:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:08:21,112 INFO L264 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-17 22:08:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:08:21,126 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 22:08:21,271 INFO L263 TraceCheckUtils]: 0: Hoare triple {141#true} call ULTIMATE.init(); {141#true} is VALID [2020-07-17 22:08:21,271 INFO L280 TraceCheckUtils]: 1: Hoare triple {141#true} assume true; {141#true} is VALID [2020-07-17 22:08:21,272 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {141#true} {141#true} #30#return; {141#true} is VALID [2020-07-17 22:08:21,272 INFO L263 TraceCheckUtils]: 3: Hoare triple {141#true} call #t~ret3 := main(); {141#true} is VALID [2020-07-17 22:08:21,272 INFO L280 TraceCheckUtils]: 4: Hoare triple {141#true} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~n~0 := #t~nondet1;havoc #t~nondet1; {141#true} is VALID [2020-07-17 22:08:21,273 INFO L280 TraceCheckUtils]: 5: Hoare triple {141#true} assume !(~n~0 < 1 || ~n~0 > 31); {141#true} is VALID [2020-07-17 22:08:21,273 INFO L263 TraceCheckUtils]: 6: Hoare triple {141#true} call #t~ret2 := hanoi(~n~0); {141#true} is VALID [2020-07-17 22:08:21,273 INFO L280 TraceCheckUtils]: 7: Hoare triple {141#true} ~n := #in~n; {141#true} is VALID [2020-07-17 22:08:21,274 INFO L280 TraceCheckUtils]: 8: Hoare triple {141#true} assume !(1 == ~n); {141#true} is VALID [2020-07-17 22:08:21,274 INFO L263 TraceCheckUtils]: 9: Hoare triple {141#true} call #t~ret0 := hanoi(~n - 1); {141#true} is VALID [2020-07-17 22:08:21,274 INFO L280 TraceCheckUtils]: 10: Hoare triple {141#true} ~n := #in~n; {141#true} is VALID [2020-07-17 22:08:21,275 INFO L280 TraceCheckUtils]: 11: Hoare triple {141#true} assume 1 == ~n;#res := 1; {200#(<= 1 |hanoi_#res|)} is VALID [2020-07-17 22:08:21,276 INFO L280 TraceCheckUtils]: 12: Hoare triple {200#(<= 1 |hanoi_#res|)} assume true; {200#(<= 1 |hanoi_#res|)} is VALID [2020-07-17 22:08:21,278 INFO L275 TraceCheckUtils]: 13: Hoare quadruple {200#(<= 1 |hanoi_#res|)} {141#true} #28#return; {207#(<= 1 |hanoi_#t~ret0|)} is VALID [2020-07-17 22:08:21,279 INFO L280 TraceCheckUtils]: 14: Hoare triple {207#(<= 1 |hanoi_#t~ret0|)} assume -2147483648 <= #t~ret0 && #t~ret0 <= 2147483647;#res := 1 + 2 * #t~ret0;havoc #t~ret0; {162#(<= 3 |hanoi_#res|)} is VALID [2020-07-17 22:08:21,280 INFO L280 TraceCheckUtils]: 15: Hoare triple {162#(<= 3 |hanoi_#res|)} assume true; {162#(<= 3 |hanoi_#res|)} is VALID [2020-07-17 22:08:21,282 INFO L275 TraceCheckUtils]: 16: Hoare quadruple {162#(<= 3 |hanoi_#res|)} {141#true} #34#return; {155#(<= 3 |main_#t~ret2|)} is VALID [2020-07-17 22:08:21,283 INFO L280 TraceCheckUtils]: 17: Hoare triple {155#(<= 3 |main_#t~ret2|)} assume -2147483648 <= #t~ret2 && #t~ret2 <= 2147483647;~result~0 := #t~ret2;havoc #t~ret2; {156#(<= 3 main_~result~0)} is VALID [2020-07-17 22:08:21,284 INFO L280 TraceCheckUtils]: 18: Hoare triple {156#(<= 3 main_~result~0)} assume !(~result~0 >= 0); {142#false} is VALID [2020-07-17 22:08:21,284 INFO L280 TraceCheckUtils]: 19: Hoare triple {142#false} assume !false; {142#false} is VALID [2020-07-17 22:08:21,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-17 22:08:21,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-17 22:08:21,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2020-07-17 22:08:21,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277939113] [2020-07-17 22:08:21,288 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-07-17 22:08:21,289 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:08:21,289 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states. [2020-07-17 22:08:21,317 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:08:21,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-17 22:08:21,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:08:21,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-17 22:08:21,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-07-17 22:08:21,319 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 7 states. [2020-07-17 22:08:21,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:08:21,431 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-07-17 22:08:21,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-17 22:08:21,431 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-07-17 22:08:21,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:08:21,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-17 22:08:21,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 20 transitions. [2020-07-17 22:08:21,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-17 22:08:21,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 20 transitions. [2020-07-17 22:08:21,437 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states and 20 transitions. [2020-07-17 22:08:21,468 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:08:21,468 INFO L225 Difference]: With dead ends: 19 [2020-07-17 22:08:21,469 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 22:08:21,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-07-17 22:08:21,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 22:08:21,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 22:08:21,471 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:08:21,471 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-17 22:08:21,471 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-17 22:08:21,472 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-17 22:08:21,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:08:21,472 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-17 22:08:21,472 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 22:08:21,473 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:08:21,473 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:08:21,473 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-17 22:08:21,473 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-17 22:08:21,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:08:21,474 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-17 22:08:21,474 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 22:08:21,474 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:08:21,474 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:08:21,474 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:08:21,475 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:08:21,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 22:08:21,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 22:08:21,475 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-07-17 22:08:21,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:08:21,476 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 22:08:21,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-17 22:08:21,476 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 22:08:21,476 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:08:21,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-17 22:08:21,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 22:08:21,738 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-17 22:08:21,739 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-17 22:08:21,739 INFO L268 CegarLoopResult]: For program point hanoiEXIT(lines 18 23) no Hoare annotation was computed. [2020-07-17 22:08:21,739 INFO L271 CegarLoopResult]: At program point hanoiENTRY(lines 18 23) the Hoare annotation is: true [2020-07-17 22:08:21,739 INFO L268 CegarLoopResult]: For program point hanoiFINAL(lines 18 23) no Hoare annotation was computed. [2020-07-17 22:08:21,740 INFO L271 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: true [2020-07-17 22:08:21,740 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-07-17 22:08:21,740 INFO L268 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-07-17 22:08:21,740 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-17 22:08:21,740 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 22:08:21,741 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 22:08:21,741 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-17 22:08:21,741 INFO L268 CegarLoopResult]: For program point L32(lines 32 36) no Hoare annotation was computed. [2020-07-17 22:08:21,745 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 35) no Hoare annotation was computed. [2020-07-17 22:08:21,745 INFO L271 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: true [2020-07-17 22:08:21,746 INFO L268 CegarLoopResult]: For program point L31-1(line 31) no Hoare annotation was computed. [2020-07-17 22:08:21,746 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 26 37) the Hoare annotation is: true [2020-07-17 22:08:21,746 INFO L268 CegarLoopResult]: For program point L28(lines 28 30) no Hoare annotation was computed. [2020-07-17 22:08:21,750 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 26 37) no Hoare annotation was computed. [2020-07-17 22:08:21,751 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 26 37) no Hoare annotation was computed. [2020-07-17 22:08:21,751 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-07-17 22:08:21,763 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-17 22:08:21,763 WARN L170 areAnnotationChecker]: L19 has no Hoare annotation [2020-07-17 22:08:21,764 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2020-07-17 22:08:21,764 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-17 22:08:21,764 WARN L170 areAnnotationChecker]: L19 has no Hoare annotation [2020-07-17 22:08:21,765 WARN L170 areAnnotationChecker]: L19 has no Hoare annotation [2020-07-17 22:08:21,765 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-17 22:08:21,766 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2020-07-17 22:08:21,766 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2020-07-17 22:08:21,766 WARN L170 areAnnotationChecker]: hanoiFINAL has no Hoare annotation [2020-07-17 22:08:21,766 WARN L170 areAnnotationChecker]: L22-1 has no Hoare annotation [2020-07-17 22:08:21,766 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-17 22:08:21,767 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-17 22:08:21,767 WARN L170 areAnnotationChecker]: L31-1 has no Hoare annotation [2020-07-17 22:08:21,767 WARN L170 areAnnotationChecker]: hanoiEXIT has no Hoare annotation [2020-07-17 22:08:21,767 WARN L170 areAnnotationChecker]: hanoiEXIT has no Hoare annotation [2020-07-17 22:08:21,767 WARN L170 areAnnotationChecker]: L22-1 has no Hoare annotation [2020-07-17 22:08:21,767 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-17 22:08:21,768 WARN L170 areAnnotationChecker]: L31-1 has no Hoare annotation [2020-07-17 22:08:21,768 WARN L170 areAnnotationChecker]: L32 has no Hoare annotation [2020-07-17 22:08:21,768 WARN L170 areAnnotationChecker]: L32 has no Hoare annotation [2020-07-17 22:08:21,768 WARN L170 areAnnotationChecker]: L35 has no Hoare annotation [2020-07-17 22:08:21,768 WARN L170 areAnnotationChecker]: L35 has no Hoare annotation [2020-07-17 22:08:21,769 INFO L163 areAnnotationChecker]: CFG has 4 edges. 4 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-17 22:08:21,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 10:08:21 BoogieIcfgContainer [2020-07-17 22:08:21,774 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 22:08:21,780 INFO L168 Benchmark]: Toolchain (without parser) took 2635.19 ms. Allocated memory was 144.2 MB in the beginning and 232.3 MB in the end (delta: 88.1 MB). Free memory was 102.2 MB in the beginning and 144.2 MB in the end (delta: -42.0 MB). Peak memory consumption was 46.1 MB. Max. memory is 7.1 GB. [2020-07-17 22:08:21,782 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 144.2 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-17 22:08:21,784 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.86 ms. Allocated memory is still 144.2 MB. Free memory was 101.8 MB in the beginning and 91.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-17 22:08:21,786 INFO L168 Benchmark]: Boogie Preprocessor took 122.13 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 91.8 MB in the beginning and 180.6 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-17 22:08:21,788 INFO L168 Benchmark]: RCFGBuilder took 312.35 ms. Allocated memory is still 201.3 MB. Free memory was 180.6 MB in the beginning and 163.9 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. [2020-07-17 22:08:21,790 INFO L168 Benchmark]: TraceAbstraction took 1936.22 ms. Allocated memory was 201.3 MB in the beginning and 232.3 MB in the end (delta: 30.9 MB). Free memory was 163.9 MB in the beginning and 144.2 MB in the end (delta: 19.7 MB). Peak memory consumption was 50.6 MB. Max. memory is 7.1 GB. [2020-07-17 22:08:21,806 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 144.2 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 255.86 ms. Allocated memory is still 144.2 MB. Free memory was 101.8 MB in the beginning and 91.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.13 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 91.8 MB in the beginning and 180.6 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 312.35 ms. Allocated memory is still 201.3 MB. Free memory was 180.6 MB in the beginning and 163.9 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1936.22 ms. Allocated memory was 201.3 MB in the beginning and 232.3 MB in the end (delta: 30.9 MB). Free memory was 163.9 MB in the beginning and 144.2 MB in the end (delta: 19.7 MB). Peak memory consumption was 50.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 35]: 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 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 39 SDtfs, 2 SDslu, 137 SDs, 0 SdLazy, 20 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 7 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 1679 SizeOfPredicates, 1 NumberOfNonLiveVariables, 49 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 6/8 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...