./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_worker_vcloud-master_on_vcloud-master/run_dir_ac08e562-feaa-4ba7-bfbd-74af2fab9c20/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac08e562-feaa-4ba7-bfbd-74af2fab9c20/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac08e562-feaa-4ba7-bfbd-74af2fab9c20/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac08e562-feaa-4ba7-bfbd-74af2fab9c20/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test24-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac08e562-feaa-4ba7-bfbd-74af2fab9c20/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac08e562-feaa-4ba7-bfbd-74af2fab9c20/bin/utaipan-WLngWcDbfI --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 [2021-10-11 02:26:59,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:26:59,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:26:59,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:26:59,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:26:59,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:26:59,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:26:59,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:26:59,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:26:59,283 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:26:59,284 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:26:59,285 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:26:59,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:26:59,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:26:59,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:26:59,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:26:59,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:26:59,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:26:59,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:26:59,297 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:26:59,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:26:59,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:26:59,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:26:59,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:26:59,307 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:26:59,308 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:26:59,308 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:26:59,309 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:26:59,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:26:59,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:26:59,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:26:59,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:26:59,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:26:59,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:26:59,316 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:26:59,318 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:26:59,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:26:59,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:26:59,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:26:59,322 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:26:59,323 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:26:59,324 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac08e562-feaa-4ba7-bfbd-74af2fab9c20/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:26:59,364 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:26:59,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:26:59,366 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:26:59,367 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:26:59,367 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:26:59,367 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:26:59,368 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:26:59,368 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:26:59,373 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:26:59,374 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:26:59,374 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:26:59,375 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:26:59,375 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:26:59,375 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:26:59,375 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:26:59,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:26:59,376 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:26:59,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:26:59,377 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:26:59,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:26:59,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:26:59,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:26:59,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:26:59,378 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:26:59,378 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:26:59,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:26:59,378 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:26:59,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:26:59,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:26:59,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:26:59,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:26:59,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:26:59,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:26:59,382 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:26:59,382 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:26:59,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:26:59,382 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:26:59,383 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:26:59,383 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:26:59,383 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_worker_vcloud-master_on_vcloud-master/run_dir_ac08e562-feaa-4ba7-bfbd-74af2fab9c20/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac08e562-feaa-4ba7-bfbd-74af2fab9c20/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dac6403f37599f80fd46825f02fd0972bc86095b [2021-10-11 02:26:59,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:26:59,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:26:59,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:26:59,697 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:26:59,699 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:26:59,700 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac08e562-feaa-4ba7-bfbd-74af2fab9c20/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/ldv-regression/test24-1.c [2021-10-11 02:26:59,762 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac08e562-feaa-4ba7-bfbd-74af2fab9c20/bin/utaipan-WLngWcDbfI/data/a2ee97e3c/86d2aec844c14c418c106e0d0e287747/FLAGc6e85736c [2021-10-11 02:27:00,197 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:27:00,197 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac08e562-feaa-4ba7-bfbd-74af2fab9c20/sv-benchmarks/c/ldv-regression/test24-1.c [2021-10-11 02:27:00,203 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac08e562-feaa-4ba7-bfbd-74af2fab9c20/bin/utaipan-WLngWcDbfI/data/a2ee97e3c/86d2aec844c14c418c106e0d0e287747/FLAGc6e85736c [2021-10-11 02:27:00,588 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac08e562-feaa-4ba7-bfbd-74af2fab9c20/bin/utaipan-WLngWcDbfI/data/a2ee97e3c/86d2aec844c14c418c106e0d0e287747 [2021-10-11 02:27:00,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:27:00,592 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:27:00,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:00,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:27:00,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:27:00,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:00" (1/1) ... [2021-10-11 02:27:00,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d7a138c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:00, skipping insertion in model container [2021-10-11 02:27:00,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:00" (1/1) ... [2021-10-11 02:27:00,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:27:00,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:27:00,803 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac08e562-feaa-4ba7-bfbd-74af2fab9c20/sv-benchmarks/c/ldv-regression/test24-1.c[704,717] [2021-10-11 02:27:00,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:00,813 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:27:00,830 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac08e562-feaa-4ba7-bfbd-74af2fab9c20/sv-benchmarks/c/ldv-regression/test24-1.c[704,717] [2021-10-11 02:27:00,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:00,844 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:27:00,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:00 WrapperNode [2021-10-11 02:27:00,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:00,846 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:00,846 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:27:00,846 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:27:00,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:00" (1/1) ... [2021-10-11 02:27:00,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:00" (1/1) ... [2021-10-11 02:27:00,877 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:00,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:27:00,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:27:00,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:27:00,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:00" (1/1) ... [2021-10-11 02:27:00,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:00" (1/1) ... [2021-10-11 02:27:00,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:00" (1/1) ... [2021-10-11 02:27:00,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:00" (1/1) ... [2021-10-11 02:27:00,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:00" (1/1) ... [2021-10-11 02:27:00,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:00" (1/1) ... [2021-10-11 02:27:00,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:00" (1/1) ... [2021-10-11 02:27:00,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:27:00,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:27:00,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:27:00,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:27:00,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:00" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac08e562-feaa-4ba7-bfbd-74af2fab9c20/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:27:00,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:27:00,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:27:00,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:27:00,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:27:00,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:27:00,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:27:00,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:27:01,241 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:27:01,241 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:27:01,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:01 BoogieIcfgContainer [2021-10-11 02:27:01,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:27:01,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:27:01,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:27:01,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:27:01,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:27:00" (1/3) ... [2021-10-11 02:27:01,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a1f8570 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:01, skipping insertion in model container [2021-10-11 02:27:01,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:00" (2/3) ... [2021-10-11 02:27:01,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a1f8570 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:01, skipping insertion in model container [2021-10-11 02:27:01,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:01" (3/3) ... [2021-10-11 02:27:01,253 INFO L111 eAbstractionObserver]: Analyzing ICFG test24-1.c [2021-10-11 02:27:01,280 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:27:01,283 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:27:01,306 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:27:01,342 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:27:01,356 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:27:01,356 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:27:01,356 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:27:01,356 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:27:01,356 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:27:01,357 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:27:01,357 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:27:01,377 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2021-10-11 02:27:01,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:27:01,382 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:01,383 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:27:01,383 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:01,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:01,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1951943614, now seen corresponding path program 1 times [2021-10-11 02:27:01,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:01,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719881794] [2021-10-11 02:27:01,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:01,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:01,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719881794] [2021-10-11 02:27:01,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:01,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:01,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006624825] [2021-10-11 02:27:01,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:27:01,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:01,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:27:01,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:27:01,618 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2021-10-11 02:27:01,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:01,634 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2021-10-11 02:27:01,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:27:01,636 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2021-10-11 02:27:01,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:01,654 INFO L225 Difference]: With dead ends: 18 [2021-10-11 02:27:01,654 INFO L226 Difference]: Without dead ends: 8 [2021-10-11 02:27:01,656 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 [2021-10-11 02:27:01,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-11 02:27:01,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-11 02:27:01,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-11 02:27:01,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-11 02:27:01,697 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2021-10-11 02:27:01,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:01,697 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-11 02:27:01,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:27:01,698 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-11 02:27:01,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:27:01,698 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:01,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:01,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:27:01,699 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:01,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:01,703 INFO L82 PathProgramCache]: Analyzing trace with hash 373513706, now seen corresponding path program 1 times [2021-10-11 02:27:01,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:01,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557867979] [2021-10-11 02:27:01,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:01,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:01,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:01,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557867979] [2021-10-11 02:27:01,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:01,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:27:01,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022606997] [2021-10-11 02:27:01,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:27:01,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:01,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:27:01,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:27:01,960 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 5 states. [2021-10-11 02:27:02,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:02,024 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-10-11 02:27:02,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:27:02,025 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2021-10-11 02:27:02,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:02,026 INFO L225 Difference]: With dead ends: 14 [2021-10-11 02:27:02,027 INFO L226 Difference]: Without dead ends: 10 [2021-10-11 02:27:02,028 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 [2021-10-11 02:27:02,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-11 02:27:02,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-11 02:27:02,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-11 02:27:02,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-11 02:27:02,032 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2021-10-11 02:27:02,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:02,032 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-11 02:27:02,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:27:02,033 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-11 02:27:02,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:27:02,033 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:02,033 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:02,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:27:02,034 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:02,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:02,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1799502843, now seen corresponding path program 1 times [2021-10-11 02:27:02,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:02,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19965848] [2021-10-11 02:27:02,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:02,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:02,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19965848] [2021-10-11 02:27:02,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340738169] [2021-10-11 02:27:02,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac08e562-feaa-4ba7-bfbd-74af2fab9c20/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:27:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:02,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-11 02:27:02,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:02,588 INFO L348 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-10-11 02:27:02,589 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 [2021-10-11 02:27:02,595 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:27:02,597 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:27:02,598 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:27:02,598 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:34, output treesize:5 [2021-10-11 02:27:02,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:02,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:02,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:02,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [29551588] [2021-10-11 02:27:02,736 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-11 02:27:02,736 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:27:02,741 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:27:02,749 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:27:02,750 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:27:03,380 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:27:03,553 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2021-10-11 02:27:03,747 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-10-11 02:27:04,000 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 37 [2021-10-11 02:27:04,272 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2021-10-11 02:27:04,275 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:27:04,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:27:04,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2021-10-11 02:27:04,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032820780] [2021-10-11 02:27:04,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-10-11 02:27:04,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:04,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-11 02:27:04,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-10-11 02:27:04,278 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 13 states. [2021-10-11 02:27:04,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:04,516 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2021-10-11 02:27:04,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-11 02:27:04,517 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 9 [2021-10-11 02:27:04,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:04,518 INFO L225 Difference]: With dead ends: 20 [2021-10-11 02:27:04,518 INFO L226 Difference]: Without dead ends: 16 [2021-10-11 02:27:04,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2021-10-11 02:27:04,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-11 02:27:04,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-11 02:27:04,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-11 02:27:04,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-10-11 02:27:04,523 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 9 [2021-10-11 02:27:04,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:04,523 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-10-11 02:27:04,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-10-11 02:27:04,523 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-10-11 02:27:04,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:27:04,524 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:04,524 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:04,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-11 02:27:04,740 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:04,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:04,741 INFO L82 PathProgramCache]: Analyzing trace with hash 963188182, now seen corresponding path program 2 times [2021-10-11 02:27:04,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:04,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114405015] [2021-10-11 02:27:04,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:04,942 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:04,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114405015] [2021-10-11 02:27:04,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803069754] [2021-10-11 02:27:04,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac08e562-feaa-4ba7-bfbd-74af2fab9c20/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:27:04,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-11 02:27:04,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:27:04,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-11 02:27:04,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:05,376 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-11 02:27:05,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:07,779 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-11 02:27:07,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1048005888] [2021-10-11 02:27:07,783 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-11 02:27:07,784 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:27:07,784 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:27:07,784 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:27:07,785 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:27:08,148 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:27:08,362 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2021-10-11 02:27:08,613 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-10-11 02:27:08,777 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 31 [2021-10-11 02:27:08,968 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 37 [2021-10-11 02:27:09,277 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2021-10-11 02:27:09,278 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:27:09,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:27:09,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 22 [2021-10-11 02:27:09,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571587509] [2021-10-11 02:27:09,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-10-11 02:27:09,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:09,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-11 02:27:09,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=645, Unknown=1, NotChecked=0, Total=756 [2021-10-11 02:27:09,281 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 22 states. [2021-10-11 02:27:13,481 WARN L197 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2021-10-11 02:27:17,653 WARN L197 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2021-10-11 02:27:21,855 WARN L197 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2021-10-11 02:27:26,045 WARN L197 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2021-10-11 02:27:30,226 WARN L197 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2021-10-11 02:27:32,400 WARN L197 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2021-10-11 02:27:32,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:32,579 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-10-11 02:27:32,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-11 02:27:32,579 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 15 [2021-10-11 02:27:32,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:32,580 INFO L225 Difference]: With dead ends: 20 [2021-10-11 02:27:32,580 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:27:32,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 26.8s TimeCoverageRelationStatistics Valid=330, Invalid=1391, Unknown=1, NotChecked=0, Total=1722 [2021-10-11 02:27:32,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:27:32,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:27:32,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:27:32,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:27:32,582 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-10-11 02:27:32,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:32,582 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:27:32,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-10-11 02:27:32,582 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:27:32,583 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:27:32,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-11 02:27:32,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:27:32,927 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:27:32,927 INFO L262 CegarLoopResult]: For program point L31(lines 31 33) no Hoare annotation was computed. [2021-10-11 02:27:32,927 INFO L262 CegarLoopResult]: For program point L23(lines 23 34) no Hoare annotation was computed. [2021-10-11 02:27:32,927 INFO L262 CegarLoopResult]: For program point L23-2(lines 23 34) no Hoare annotation was computed. [2021-10-11 02:27:32,927 INFO L258 CegarLoopResult]: At program point L32(lines 17 40) the Hoare annotation is: false [2021-10-11 02:27:32,927 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:27:32,927 INFO L262 CegarLoopResult]: For program point L28-1(lines 28 30) no Hoare annotation was computed. [2021-10-11 02:27:32,928 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)))))) [2021-10-11 02:27:32,928 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)))))) [2021-10-11 02:27:32,928 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 38) no Hoare annotation was computed. [2021-10-11 02:27:32,928 INFO L265 CegarLoopResult]: At program point L39(lines 16 40) the Hoare annotation is: true [2021-10-11 02:27:32,938 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] [2021-10-11 02:27:32,939 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] [2021-10-11 02:27:32,939 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] [2021-10-11 02:27:32,939 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] [2021-10-11 02:27:32,940 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] [2021-10-11 02:27:32,940 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] [2021-10-11 02:27:32,940 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] [2021-10-11 02:27:32,940 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] [2021-10-11 02:27:32,948 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] [2021-10-11 02:27:32,949 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] [2021-10-11 02:27:32,949 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] [2021-10-11 02:27:32,949 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] [2021-10-11 02:27:32,950 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] [2021-10-11 02:27:32,950 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] [2021-10-11 02:27:32,950 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] [2021-10-11 02:27:32,950 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] [2021-10-11 02:27:32,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:27:32 BoogieIcfgContainer [2021-10-11 02:27:32,955 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:27:32,955 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:27:32,955 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:27:32,956 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:27:32,956 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:01" (3/4) ... [2021-10-11 02:27:32,959 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:27:32,967 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-11 02:27:32,967 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-11 02:27:32,967 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:27:32,968 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:27:32,990 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] [2021-10-11 02:27:33,002 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac08e562-feaa-4ba7-bfbd-74af2fab9c20/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:27:33,002 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:27:33,003 INFO L168 Benchmark]: Toolchain (without parser) took 32410.65 ms. Allocated memory was 90.2 MB in the beginning and 169.9 MB in the end (delta: 79.7 MB). Free memory was 55.1 MB in the beginning and 57.8 MB in the end (delta: -2.7 MB). Peak memory consumption was 78.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:33,003 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 90.2 MB. Free memory is still 71.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:33,004 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.34 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 54.9 MB in the beginning and 90.0 MB in the end (delta: -35.2 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:33,005 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.94 ms. Allocated memory is still 113.2 MB. Free memory was 90.0 MB in the beginning and 88.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:33,005 INFO L168 Benchmark]: Boogie Preprocessor took 20.04 ms. Allocated memory is still 113.2 MB. Free memory was 88.5 MB in the beginning and 87.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:33,005 INFO L168 Benchmark]: RCFGBuilder took 344.59 ms. Allocated memory is still 113.2 MB. Free memory was 87.3 MB in the beginning and 71.5 MB in the end (delta: 15.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:33,006 INFO L168 Benchmark]: TraceAbstraction took 31709.32 ms. Allocated memory was 113.2 MB in the beginning and 169.9 MB in the end (delta: 56.6 MB). Free memory was 71.0 MB in the beginning and 60.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 68.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:33,006 INFO L168 Benchmark]: Witness Printer took 46.96 ms. Allocated memory is still 169.9 MB. Free memory was 60.9 MB in the beginning and 57.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:33,009 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 90.2 MB. Free memory is still 71.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 251.34 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 54.9 MB in the beginning and 90.0 MB in the end (delta: -35.2 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.94 ms. Allocated memory is still 113.2 MB. Free memory was 90.0 MB in the beginning and 88.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.04 ms. Allocated memory is still 113.2 MB. Free memory was 88.5 MB in the beginning and 87.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 344.59 ms. Allocated memory is still 113.2 MB. Free memory was 87.3 MB in the beginning and 71.5 MB in the end (delta: 15.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 31709.32 ms. Allocated memory was 113.2 MB in the beginning and 169.9 MB in the end (delta: 56.6 MB). Free memory was 71.0 MB in the beginning and 60.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 68.4 MB. Max. memory is 16.1 GB. * Witness Printer took 46.96 ms. Allocated memory is still 169.9 MB. Free memory was 60.9 MB in the beginning and 57.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 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 [2021-10-11 02:27:33,018 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] [2021-10-11 02:27:33,018 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] [2021-10-11 02:27:33,018 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] [2021-10-11 02:27:33,018 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] [2021-10-11 02:27:33,019 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] [2021-10-11 02:27:33,019 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] [2021-10-11 02:27:33,019 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] [2021-10-11 02:27:33,019 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] [2021-10-11 02:27:33,021 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] [2021-10-11 02:27:33,021 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] [2021-10-11 02:27:33,022 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] [2021-10-11 02:27:33,022 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] [2021-10-11 02:27:33,022 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] [2021-10-11 02:27:33,022 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] [2021-10-11 02:27:33,023 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] [2021-10-11 02:27:33,023 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: 31.4s, OverallIterations: 4, TraceHistogramMax: 5, AutomataDifference: 23.6s, 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, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 28.0s 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, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.6s 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...