./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test24-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0f298567-56b3-47bd-8509-75cb96fbd7b2/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0f298567-56b3-47bd-8509-75cb96fbd7b2/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0f298567-56b3-47bd-8509-75cb96fbd7b2/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0f298567-56b3-47bd-8509-75cb96fbd7b2/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test24-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0f298567-56b3-47bd-8509-75cb96fbd7b2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0f298567-56b3-47bd-8509-75cb96fbd7b2/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dac6403f37599f80fd46825f02fd0972bc86095b ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 08:50:02,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 08:50:02,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 08:50:02,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 08:50:02,189 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 08:50:02,191 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 08:50:02,192 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 08:50:02,199 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 08:50:02,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 08:50:02,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 08:50:02,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 08:50:02,204 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 08:50:02,205 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 08:50:02,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 08:50:02,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 08:50:02,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 08:50:02,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 08:50:02,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 08:50:02,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 08:50:02,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 08:50:02,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 08:50:02,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 08:50:02,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 08:50:02,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 08:50:02,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 08:50:02,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 08:50:02,223 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 08:50:02,224 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 08:50:02,225 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 08:50:02,226 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 08:50:02,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 08:50:02,227 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 08:50:02,228 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 08:50:02,229 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 08:50:02,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 08:50:02,230 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 08:50:02,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 08:50:02,230 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 08:50:02,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 08:50:02,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 08:50:02,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 08:50:02,232 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0f298567-56b3-47bd-8509-75cb96fbd7b2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 08:50:02,255 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 08:50:02,256 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 08:50:02,256 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 08:50:02,256 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 08:50:02,257 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 08:50:02,257 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 08:50:02,257 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 08:50:02,257 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 08:50:02,257 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 08:50:02,257 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 08:50:02,257 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 08:50:02,257 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 08:50:02,258 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 08:50:02,258 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 08:50:02,258 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 08:50:02,259 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 08:50:02,259 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 08:50:02,259 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 08:50:02,259 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 08:50:02,259 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 08:50:02,259 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 08:50:02,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 08:50:02,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 08:50:02,259 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 08:50:02,260 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 08:50:02,260 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 08:50:02,260 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 08:50:02,260 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 08:50:02,260 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 08:50:02,260 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 08:50:02,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 08:50:02,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 08:50:02,261 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 08:50:02,261 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 08:50:02,261 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 08:50:02,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 08:50:02,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 08:50:02,261 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 08:50:02,262 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 08:50:02,262 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_0f298567-56b3-47bd-8509-75cb96fbd7b2/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0f298567-56b3-47bd-8509-75cb96fbd7b2/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dac6403f37599f80fd46825f02fd0972bc86095b [2020-12-09 08:50:02,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 08:50:02,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 08:50:02,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 08:50:02,453 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 08:50:02,454 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 08:50:02,455 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0f298567-56b3-47bd-8509-75cb96fbd7b2/bin/utaipan/../../sv-benchmarks/c/ldv-regression/test24-1.c [2020-12-09 08:50:02,499 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0f298567-56b3-47bd-8509-75cb96fbd7b2/bin/utaipan/data/85a4cf111/6149292f87e94afbb58999d778d4f692/FLAG1443fecdb [2020-12-09 08:50:02,874 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 08:50:02,874 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0f298567-56b3-47bd-8509-75cb96fbd7b2/sv-benchmarks/c/ldv-regression/test24-1.c [2020-12-09 08:50:02,879 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0f298567-56b3-47bd-8509-75cb96fbd7b2/bin/utaipan/data/85a4cf111/6149292f87e94afbb58999d778d4f692/FLAG1443fecdb [2020-12-09 08:50:02,891 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0f298567-56b3-47bd-8509-75cb96fbd7b2/bin/utaipan/data/85a4cf111/6149292f87e94afbb58999d778d4f692 [2020-12-09 08:50:02,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 08:50:02,894 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 08:50:02,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 08:50:02,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 08:50:02,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 08:50:02,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:50:02" (1/1) ... [2020-12-09 08:50:02,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c9d383b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:50:02, skipping insertion in model container [2020-12-09 08:50:02,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:50:02" (1/1) ... [2020-12-09 08:50:02,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 08:50:02,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 08:50:03,032 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_0f298567-56b3-47bd-8509-75cb96fbd7b2/sv-benchmarks/c/ldv-regression/test24-1.c[704,717] [2020-12-09 08:50:03,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:50:03,040 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 08:50:03,051 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_0f298567-56b3-47bd-8509-75cb96fbd7b2/sv-benchmarks/c/ldv-regression/test24-1.c[704,717] [2020-12-09 08:50:03,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:50:03,062 INFO L208 MainTranslator]: Completed translation [2020-12-09 08:50:03,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:50:03 WrapperNode [2020-12-09 08:50:03,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 08:50:03,063 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 08:50:03,063 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 08:50:03,063 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 08:50:03,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:50:03" (1/1) ... [2020-12-09 08:50:03,073 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:50:03" (1/1) ... [2020-12-09 08:50:03,085 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 08:50:03,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 08:50:03,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 08:50:03,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 08:50:03,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:50:03" (1/1) ... [2020-12-09 08:50:03,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:50:03" (1/1) ... [2020-12-09 08:50:03,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:50:03" (1/1) ... [2020-12-09 08:50:03,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:50:03" (1/1) ... [2020-12-09 08:50:03,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:50:03" (1/1) ... [2020-12-09 08:50:03,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:50:03" (1/1) ... [2020-12-09 08:50:03,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:50:03" (1/1) ... [2020-12-09 08:50:03,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 08:50:03,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 08:50:03,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 08:50:03,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 08:50:03,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:50:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f298567-56b3-47bd-8509-75cb96fbd7b2/bin/utaipan/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 [2020-12-09 08:50:03,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 08:50:03,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 08:50:03,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 08:50:03,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 08:50:03,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 08:50:03,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 08:50:03,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 08:50:03,354 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 08:50:03,354 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 08:50:03,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:50:03 BoogieIcfgContainer [2020-12-09 08:50:03,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 08:50:03,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 08:50:03,358 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 08:50:03,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 08:50:03,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 08:50:02" (1/3) ... [2020-12-09 08:50:03,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da8a3fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:50:03, skipping insertion in model container [2020-12-09 08:50:03,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:50:03" (2/3) ... [2020-12-09 08:50:03,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da8a3fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:50:03, skipping insertion in model container [2020-12-09 08:50:03,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:50:03" (3/3) ... [2020-12-09 08:50:03,364 INFO L111 eAbstractionObserver]: Analyzing ICFG test24-1.c [2020-12-09 08:50:03,377 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 08:50:03,380 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 08:50:03,390 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 08:50:03,413 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 08:50:03,413 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 08:50:03,413 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 08:50:03,413 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 08:50:03,413 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 08:50:03,413 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 08:50:03,414 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 08:50:03,414 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 08:50:03,425 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-12-09 08:50:03,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 08:50:03,429 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:50:03,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 08:50:03,430 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:50:03,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:50:03,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1951943614, now seen corresponding path program 1 times [2020-12-09 08:50:03,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:50:03,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414900471] [2020-12-09 08:50:03,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:50:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:50:03,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:50:03,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414900471] [2020-12-09 08:50:03,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:50:03,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 08:50:03,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342859247] [2020-12-09 08:50:03,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 08:50:03,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:50:03,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 08:50:03,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 08:50:03,599 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2020-12-09 08:50:03,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:50:03,612 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2020-12-09 08:50:03,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 08:50:03,614 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-09 08:50:03,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:50:03,621 INFO L225 Difference]: With dead ends: 18 [2020-12-09 08:50:03,621 INFO L226 Difference]: Without dead ends: 8 [2020-12-09 08:50:03,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 08:50:03,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-12-09 08:50:03,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-12-09 08:50:03,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-12-09 08:50:03,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-12-09 08:50:03,650 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-12-09 08:50:03,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:50:03,650 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-12-09 08:50:03,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 08:50:03,651 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-12-09 08:50:03,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 08:50:03,651 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:50:03,651 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:50:03,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 08:50:03,652 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:50:03,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:50:03,653 INFO L82 PathProgramCache]: Analyzing trace with hash 373513706, now seen corresponding path program 1 times [2020-12-09 08:50:03,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:50:03,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907150919] [2020-12-09 08:50:03,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:50:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:50:03,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:50:03,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907150919] [2020-12-09 08:50:03,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:50:03,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 08:50:03,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915844361] [2020-12-09 08:50:03,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 08:50:03,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:50:03,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 08:50:03,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 08:50:03,782 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 5 states. [2020-12-09 08:50:03,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:50:03,825 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-12-09 08:50:03,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 08:50:03,826 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-12-09 08:50:03,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:50:03,826 INFO L225 Difference]: With dead ends: 14 [2020-12-09 08:50:03,826 INFO L226 Difference]: Without dead ends: 10 [2020-12-09 08:50:03,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-09 08:50:03,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-12-09 08:50:03,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-12-09 08:50:03,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-12-09 08:50:03,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-12-09 08:50:03,830 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2020-12-09 08:50:03,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:50:03,831 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-12-09 08:50:03,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 08:50:03,831 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-12-09 08:50:03,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 08:50:03,831 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:50:03,831 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:50:03,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 08:50:03,832 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:50:03,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:50:03,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1799502843, now seen corresponding path program 1 times [2020-12-09 08:50:03,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:50:03,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935437109] [2020-12-09 08:50:03,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:50:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:50:03,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:50:03,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935437109] [2020-12-09 08:50:03,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321306142] [2020-12-09 08:50:03,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f298567-56b3-47bd-8509-75cb96fbd7b2/bin/utaipan/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 [2020-12-09 08:50:04,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:50:04,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-09 08:50:04,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:50:04,110 INFO L348 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2020-12-09 08:50:04,110 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 12 [2020-12-09 08:50:04,112 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:50:04,114 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:50:04,114 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 08:50:04,114 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:34, output treesize:5 [2020-12-09 08:50:04,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:50:04,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:50:04,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:50:04,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [306681455] [2020-12-09 08:50:04,199 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-12-09 08:50:04,199 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 08:50:04,203 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 08:50:04,207 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 08:50:04,208 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 08:50:04,563 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 08:50:04,684 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-12-09 08:50:05,126 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:50:05,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 08:50:05,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2020-12-09 08:50:05,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581575654] [2020-12-09 08:50:05,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-09 08:50:05,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:50:05,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-09 08:50:05,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-12-09 08:50:05,128 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 13 states. [2020-12-09 08:50:05,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:50:05,263 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2020-12-09 08:50:05,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 08:50:05,264 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 9 [2020-12-09 08:50:05,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:50:05,264 INFO L225 Difference]: With dead ends: 20 [2020-12-09 08:50:05,264 INFO L226 Difference]: Without dead ends: 16 [2020-12-09 08:50:05,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2020-12-09 08:50:05,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-09 08:50:05,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-09 08:50:05,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-09 08:50:05,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-12-09 08:50:05,267 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 9 [2020-12-09 08:50:05,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:50:05,267 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-12-09 08:50:05,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-09 08:50:05,268 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-12-09 08:50:05,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 08:50:05,268 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:50:05,268 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2020-12-09 08:50:05,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-09 08:50:05,470 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:50:05,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:50:05,471 INFO L82 PathProgramCache]: Analyzing trace with hash 963188182, now seen corresponding path program 2 times [2020-12-09 08:50:05,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:50:05,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686122359] [2020-12-09 08:50:05,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:50:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:50:05,671 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:50:05,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686122359] [2020-12-09 08:50:05,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532820653] [2020-12-09 08:50:05,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f298567-56b3-47bd-8509-75cb96fbd7b2/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:50:05,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-09 08:50:05,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 08:50:05,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-09 08:50:05,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:50:05,980 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-09 08:50:05,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:50:08,177 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-09 08:50:08,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1894260508] [2020-12-09 08:50:08,180 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-12-09 08:50:08,180 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 08:50:08,181 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 08:50:08,181 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 08:50:08,181 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 08:50:08,427 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 08:50:08,570 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-12-09 08:50:08,752 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-12-09 08:50:09,131 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:50:09,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 08:50:09,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 22 [2020-12-09 08:50:09,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301171942] [2020-12-09 08:50:09,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-09 08:50:09,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:50:09,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-09 08:50:09,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=645, Unknown=1, NotChecked=0, Total=756 [2020-12-09 08:50:09,133 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 22 states. [2020-12-09 08:50:13,278 WARN L197 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-12-09 08:50:17,424 WARN L197 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2020-12-09 08:50:21,554 WARN L197 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2020-12-09 08:50:25,693 WARN L197 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2020-12-09 08:50:29,844 WARN L197 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-12-09 08:50:32,003 WARN L197 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-12-09 08:50:32,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:50:32,146 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2020-12-09 08:50:32,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-09 08:50:32,146 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 15 [2020-12-09 08:50:32,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:50:32,147 INFO L225 Difference]: With dead ends: 20 [2020-12-09 08:50:32,147 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 08:50:32,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 25.9s TimeCoverageRelationStatistics Valid=330, Invalid=1391, Unknown=1, NotChecked=0, Total=1722 [2020-12-09 08:50:32,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 08:50:32,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 08:50:32,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 08:50:32,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 08:50:32,148 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-12-09 08:50:32,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:50:32,148 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 08:50:32,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-09 08:50:32,148 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 08:50:32,148 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 08:50:32,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-09 08:50:32,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 08:50:32,451 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 08:50:32,452 INFO L262 CegarLoopResult]: For program point L31(lines 31 33) no Hoare annotation was computed. [2020-12-09 08:50:32,452 INFO L262 CegarLoopResult]: For program point L23(lines 23 34) no Hoare annotation was computed. [2020-12-09 08:50:32,452 INFO L262 CegarLoopResult]: For program point L23-2(lines 23 34) no Hoare annotation was computed. [2020-12-09 08:50:32,452 INFO L258 CegarLoopResult]: At program point L32(lines 17 40) the Hoare annotation is: false [2020-12-09 08:50:32,452 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 08:50:32,452 INFO L262 CegarLoopResult]: For program point L28-1(lines 28 30) no Hoare annotation was computed. [2020-12-09 08:50:32,452 INFO L258 CegarLoopResult]: At program point L28-3(lines 28 30) the Hoare annotation is: (and (= |ULTIMATE.start_main_~#ad1~0.offset| 0) (= ULTIMATE.start_main_~pa~0.base |ULTIMATE.start_main_~#ad1~0.base|) (< ULTIMATE.start_main_~i~0 (+ (select (select |#memory_int| ULTIMATE.start_main_~pa~0.base) ULTIMATE.start_main_~pa~0.offset) 1)) (= (mod (+ |ULTIMATE.start_main_~#ad1~0.offset| (* ULTIMATE.start_main_~pa~0.offset 7)) (- 8)) 0) (let ((.cse0 (div (+ |ULTIMATE.start_main_~#ad1~0.offset| (* ULTIMATE.start_main_~pa~0.offset (- 1))) (- 8)))) (= .cse0 (select (select |#memory_int| |ULTIMATE.start_main_~#ad1~0.base|) (+ |ULTIMATE.start_main_~#ad1~0.offset| (* .cse0 8)))))) [2020-12-09 08:50:32,452 INFO L258 CegarLoopResult]: At program point L28-4(lines 28 30) the Hoare annotation is: (and (= |ULTIMATE.start_main_~#ad1~0.offset| 0) (exists ((aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110 Int) (aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118 Int)) (let ((.cse0 (select |#memory_int| |ULTIMATE.start_main_~#ad1~0.base|))) (let ((.cse1 (select .cse0 (div (+ (* |ULTIMATE.start_main_~#ad1~0.offset| (- 1)) (* (div (+ (* |ULTIMATE.start_main_~#ad1~0.offset| 8) (* (div (* aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110 42) 6) (- 8))) (- 8)) (- 8))) 7))) (.cse2 (* 8 aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110)) (.cse3 (* 8 aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118))) (and (= aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118 (select .cse0 (+ |ULTIMATE.start_main_~#ad1~0.offset| (* aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118 8)))) (<= .cse1 ULTIMATE.start_main_~i~0) (< ULTIMATE.start_main_~i~0 (+ .cse1 1)) (< (+ .cse2 .cse3) 8) (< 0 (+ .cse2 .cse3 1)))))) (= ULTIMATE.start_main_~pa~0.base |ULTIMATE.start_main_~#ad1~0.base|) (< ULTIMATE.start_main_~i~0 (+ (select (select |#memory_int| ULTIMATE.start_main_~pa~0.base) ULTIMATE.start_main_~pa~0.offset) 1)) (= (mod (+ |ULTIMATE.start_main_~#ad1~0.offset| (* ULTIMATE.start_main_~pa~0.offset 7)) (- 8)) 0) (let ((.cse4 (div (+ |ULTIMATE.start_main_~#ad1~0.offset| (* ULTIMATE.start_main_~pa~0.offset (- 1))) (- 8)))) (= .cse4 (select (select |#memory_int| |ULTIMATE.start_main_~#ad1~0.base|) (+ |ULTIMATE.start_main_~#ad1~0.offset| (* .cse4 8)))))) [2020-12-09 08:50:32,452 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 38) no Hoare annotation was computed. [2020-12-09 08:50:32,453 INFO L265 CegarLoopResult]: At program point L39(lines 16 40) the Hoare annotation is: true [2020-12-09 08:50:32,459 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] [2020-12-09 08:50:32,460 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] [2020-12-09 08:50:32,460 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] [2020-12-09 08:50:32,460 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] [2020-12-09 08:50:32,460 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] [2020-12-09 08:50:32,461 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] [2020-12-09 08:50:32,461 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] [2020-12-09 08:50:32,461 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] [2020-12-09 08:50:32,468 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] [2020-12-09 08:50:32,468 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] [2020-12-09 08:50:32,468 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] [2020-12-09 08:50:32,469 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] [2020-12-09 08:50:32,469 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] [2020-12-09 08:50:32,469 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] [2020-12-09 08:50:32,469 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] [2020-12-09 08:50:32,469 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] [2020-12-09 08:50:32,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 08:50:32 BoogieIcfgContainer [2020-12-09 08:50:32,474 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 08:50:32,474 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 08:50:32,474 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 08:50:32,474 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 08:50:32,475 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:50:03" (3/4) ... [2020-12-09 08:50:32,481 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 08:50:32,487 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-12-09 08:50:32,487 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-12-09 08:50:32,488 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 08:50:32,488 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 08:50:32,503 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((ad1 == 0 && (\exists aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110 : int, aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118 : int :: (((aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118 == unknown-#memory_int-unknown[ad1][ad1 + aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118 * 8] && unknown-#memory_int-unknown[ad1][(ad1 * -1 + (ad1 * 8 + aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110 * 42 / 6 * -8) / -8 * -8) / 7] <= i) && i < unknown-#memory_int-unknown[ad1][(ad1 * -1 + (ad1 * 8 + aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110 * 42 / 6 * -8) / -8 * -8) / 7] + 1) && 8 * aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110 + 8 * aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118 < 8) && 0 < 8 * aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110 + 8 * aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118 + 1)) && pa == ad1) && i < unknown-#memory_int-unknown[pa][pa] + 1) && (ad1 + pa * 7) % -8 == 0) && (ad1 + pa * -1) / -8 == unknown-#memory_int-unknown[ad1][ad1 + (ad1 + pa * -1) / -8 * 8] [2020-12-09 08:50:32,514 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0f298567-56b3-47bd-8509-75cb96fbd7b2/bin/utaipan/witness.graphml [2020-12-09 08:50:32,514 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 08:50:32,515 INFO L168 Benchmark]: Toolchain (without parser) took 29620.25 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 56.5 MB in the beginning and 92.8 MB in the end (delta: -36.3 MB). Peak memory consumption was 51.6 MB. Max. memory is 16.1 GB. [2020-12-09 08:50:32,516 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 96.5 MB. Free memory is still 72.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:50:32,516 INFO L168 Benchmark]: CACSL2BoogieTranslator took 166.65 ms. Allocated memory is still 96.5 MB. Free memory was 56.2 MB in the beginning and 72.4 MB in the end (delta: -16.1 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2020-12-09 08:50:32,516 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.51 ms. Allocated memory is still 96.5 MB. Free memory was 72.4 MB in the beginning and 70.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:50:32,517 INFO L168 Benchmark]: Boogie Preprocessor took 16.77 ms. Allocated memory is still 96.5 MB. Free memory was 70.9 MB in the beginning and 69.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:50:32,517 INFO L168 Benchmark]: RCFGBuilder took 253.04 ms. Allocated memory is still 96.5 MB. Free memory was 69.5 MB in the beginning and 66.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 08:50:32,518 INFO L168 Benchmark]: TraceAbstraction took 29115.51 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 66.4 MB in the beginning and 28.2 MB in the end (delta: 38.3 MB). Peak memory consumption was 59.6 MB. Max. memory is 16.1 GB. [2020-12-09 08:50:32,518 INFO L168 Benchmark]: Witness Printer took 40.17 ms. Allocated memory is still 117.4 MB. Free memory was 28.2 MB in the beginning and 92.8 MB in the end (delta: -64.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:50:32,521 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 96.5 MB. Free memory is still 72.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 166.65 ms. Allocated memory is still 96.5 MB. Free memory was 56.2 MB in the beginning and 72.4 MB in the end (delta: -16.1 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 22.51 ms. Allocated memory is still 96.5 MB. Free memory was 72.4 MB in the beginning and 70.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.77 ms. Allocated memory is still 96.5 MB. Free memory was 70.9 MB in the beginning and 69.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 253.04 ms. Allocated memory is still 96.5 MB. Free memory was 69.5 MB in the beginning and 66.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 29115.51 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 66.4 MB in the beginning and 28.2 MB in the end (delta: 38.3 MB). Peak memory consumption was 59.6 MB. Max. memory is 16.1 GB. * Witness Printer took 40.17 ms. Allocated memory is still 117.4 MB. Free memory was 28.2 MB in the beginning and 92.8 MB in the end (delta: -64.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 38]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 28]: Loop Invariant [2020-12-09 08:50:32,527 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] [2020-12-09 08:50:32,527 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] [2020-12-09 08:50:32,527 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] [2020-12-09 08:50:32,528 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] [2020-12-09 08:50:32,528 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] [2020-12-09 08:50:32,528 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] [2020-12-09 08:50:32,528 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] [2020-12-09 08:50:32,528 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] [2020-12-09 08:50:32,530 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] [2020-12-09 08:50:32,530 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] [2020-12-09 08:50:32,530 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] [2020-12-09 08:50:32,530 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] [2020-12-09 08:50:32,531 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] [2020-12-09 08:50:32,531 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] [2020-12-09 08:50:32,531 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] [2020-12-09 08:50:32,531 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] Derived loop invariant: ((((ad1 == 0 && (\exists aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110 : int, aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118 : int :: (((aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118 == unknown-#memory_int-unknown[ad1][ad1 + aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118 * 8] && unknown-#memory_int-unknown[ad1][(ad1 * -1 + (ad1 * 8 + aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110 * 42 / 6 * -8) / -8 * -8) / 7] <= i) && i < unknown-#memory_int-unknown[ad1][(ad1 * -1 + (ad1 * 8 + aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110 * 42 / 6 * -8) / -8 * -8) / 7] + 1) && 8 * aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110 + 8 * aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118 < 8) && 0 < 8 * aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110 + 8 * aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118 + 1)) && pa == ad1) && i < unknown-#memory_int-unknown[pa][pa] + 1) && (ad1 + pa * 7) % -8 == 0) && (ad1 + pa * -1) / -8 == unknown-#memory_int-unknown[ad1][ad1 + (ad1 + pa * -1) / -8 * 8] - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (((ad1 == 0 && pa == ad1) && i < unknown-#memory_int-unknown[pa][pa] + 1) && (ad1 + pa * 7) % -8 == 0) && (ad1 + pa * -1) / -8 == unknown-#memory_int-unknown[ad1][ad1 + (ad1 + pa * -1) / -8 * 8] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 28.9s, OverallIterations: 4, TraceHistogramMax: 5, AutomataDifference: 23.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 42 SDslu, 20 SDs, 0 SdLazy, 132 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 26.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=3, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 11 NumberOfFragments, 186 HoareAnnotationTreeSize, 4 FomulaSimplifications, 57 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 229 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 61 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 77 ConstructedInterpolants, 13 QuantifiedInterpolants, 14715 SizeOfPredicates, 29 NumberOfNonLiveVariables, 167 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 25/66 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...