./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i --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_47ccb9f7-f5ea-408b-bd9a-d7e56303a731/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ccb9f7-f5ea-408b-bd9a-d7e56303a731/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_47ccb9f7-f5ea-408b-bd9a-d7e56303a731/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ccb9f7-f5ea-408b-bd9a-d7e56303a731/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ccb9f7-f5ea-408b-bd9a-d7e56303a731/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_47ccb9f7-f5ea-408b-bd9a-d7e56303a731/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 8770e865452d763f6a1ae70a92c5caf41552c1e5 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:23:07,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:23:07,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:23:07,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:23:07,771 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:23:07,777 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:23:07,779 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:23:07,783 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:23:07,786 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:23:07,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:23:07,794 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:23:07,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:23:07,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:23:07,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:23:07,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:23:07,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:23:07,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:23:07,810 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:23:07,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:23:07,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:23:07,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:23:07,826 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:23:07,830 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:23:07,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:23:07,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:23:07,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:23:07,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:23:07,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:23:07,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:23:07,845 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:23:07,846 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:23:07,847 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:23:07,849 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:23:07,850 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:23:07,852 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:23:07,852 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:23:07,853 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:23:07,853 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:23:07,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:23:07,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:23:07,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:23:07,858 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ccb9f7-f5ea-408b-bd9a-d7e56303a731/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:23:07,898 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:23:07,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:23:07,899 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:23:07,899 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:23:07,899 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:23:07,899 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:23:07,900 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:23:07,900 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:23:07,900 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:23:07,900 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:23:07,900 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:23:07,901 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:23:07,901 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:23:07,901 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:23:07,901 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:23:07,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:23:07,902 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:23:07,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:23:07,903 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:23:07,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:23:07,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:23:07,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:23:07,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:23:07,904 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:23:07,904 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:23:07,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:23:07,904 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:23:07,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:23:07,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:23:07,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:23:07,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:23:07,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:23:07,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:23:07,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:23:07,906 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:23:07,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:23:07,906 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:23:07,907 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:23:07,907 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:23:07,907 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_47ccb9f7-f5ea-408b-bd9a-d7e56303a731/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ccb9f7-f5ea-408b-bd9a-d7e56303a731/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8770e865452d763f6a1ae70a92c5caf41552c1e5 [2021-10-11 02:23:08,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:23:08,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:23:08,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:23:08,211 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:23:08,212 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:23:08,213 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ccb9f7-f5ea-408b-bd9a-d7e56303a731/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2021-10-11 02:23:08,282 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ccb9f7-f5ea-408b-bd9a-d7e56303a731/bin/utaipan-WLngWcDbfI/data/48243ca7b/ea0e6d93e67045b49b221ff255515083/FLAGb1445b713 [2021-10-11 02:23:08,695 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:23:08,696 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ccb9f7-f5ea-408b-bd9a-d7e56303a731/sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2021-10-11 02:23:08,703 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ccb9f7-f5ea-408b-bd9a-d7e56303a731/bin/utaipan-WLngWcDbfI/data/48243ca7b/ea0e6d93e67045b49b221ff255515083/FLAGb1445b713 [2021-10-11 02:23:09,070 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ccb9f7-f5ea-408b-bd9a-d7e56303a731/bin/utaipan-WLngWcDbfI/data/48243ca7b/ea0e6d93e67045b49b221ff255515083 [2021-10-11 02:23:09,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:23:09,074 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:23:09,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:09,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:23:09,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:23:09,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:09" (1/1) ... [2021-10-11 02:23:09,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@639e4bdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:09, skipping insertion in model container [2021-10-11 02:23:09,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:09" (1/1) ... [2021-10-11 02:23:09,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:23:09,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:23:09,281 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_47ccb9f7-f5ea-408b-bd9a-d7e56303a731/sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i[840,853] [2021-10-11 02:23:09,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:09,323 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:23:09,336 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_47ccb9f7-f5ea-408b-bd9a-d7e56303a731/sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i[840,853] [2021-10-11 02:23:09,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:09,374 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:23:09,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:09 WrapperNode [2021-10-11 02:23:09,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:09,376 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:09,376 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:23:09,377 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:23:09,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:09" (1/1) ... [2021-10-11 02:23:09,393 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:09" (1/1) ... [2021-10-11 02:23:09,415 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:09,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:23:09,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:23:09,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:23:09,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:09" (1/1) ... [2021-10-11 02:23:09,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:09" (1/1) ... [2021-10-11 02:23:09,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:09" (1/1) ... [2021-10-11 02:23:09,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:09" (1/1) ... [2021-10-11 02:23:09,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:09" (1/1) ... [2021-10-11 02:23:09,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:09" (1/1) ... [2021-10-11 02:23:09,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:09" (1/1) ... [2021-10-11 02:23:09,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:23:09,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:23:09,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:23:09,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:23:09,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:09" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ccb9f7-f5ea-408b-bd9a-d7e56303a731/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 02:23:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:23:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:23:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:23:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:23:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-10-11 02:23:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:23:09,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:23:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:23:10,119 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:23:10,120 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-11 02:23:10,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:10 BoogieIcfgContainer [2021-10-11 02:23:10,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:23:10,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:23:10,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:23:10,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:23:10,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:23:09" (1/3) ... [2021-10-11 02:23:10,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@286d2903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:10, skipping insertion in model container [2021-10-11 02:23:10,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:09" (2/3) ... [2021-10-11 02:23:10,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@286d2903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:10, skipping insertion in model container [2021-10-11 02:23:10,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:10" (3/3) ... [2021-10-11 02:23:10,132 INFO L111 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2021-10-11 02:23:10,146 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:23:10,150 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:23:10,161 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:23:10,186 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:23:10,186 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:23:10,187 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:23:10,187 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:23:10,187 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:23:10,187 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:23:10,188 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:23:10,188 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:23:10,201 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2021-10-11 02:23:10,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:23:10,207 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:10,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:10,208 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:10,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:10,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1412724868, now seen corresponding path program 1 times [2021-10-11 02:23:10,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:10,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831896722] [2021-10-11 02:23:10,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:10,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:10,377 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 02:23:10,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831896722] [2021-10-11 02:23:10,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:10,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:10,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283106909] [2021-10-11 02:23:10,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:23:10,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:10,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:23:10,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:23:10,400 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2021-10-11 02:23:10,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:10,416 INFO L93 Difference]: Finished difference Result 38 states and 55 transitions. [2021-10-11 02:23:10,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:23:10,417 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2021-10-11 02:23:10,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:10,426 INFO L225 Difference]: With dead ends: 38 [2021-10-11 02:23:10,426 INFO L226 Difference]: Without dead ends: 17 [2021-10-11 02:23:10,429 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 02:23:10,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-11 02:23:10,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-11 02:23:10,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-11 02:23:10,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2021-10-11 02:23:10,459 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 11 [2021-10-11 02:23:10,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:10,460 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2021-10-11 02:23:10,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:23:10,460 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2021-10-11 02:23:10,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:23:10,461 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:10,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:10,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:23:10,461 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:10,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:10,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1180172420, now seen corresponding path program 1 times [2021-10-11 02:23:10,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:10,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226583359] [2021-10-11 02:23:10,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:10,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:10,639 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 02:23:10,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226583359] [2021-10-11 02:23:10,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:10,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:23:10,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231751299] [2021-10-11 02:23:10,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:23:10,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:10,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:23:10,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:23:10,646 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand 7 states. [2021-10-11 02:23:10,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:10,888 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2021-10-11 02:23:10,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:23:10,889 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2021-10-11 02:23:10,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:10,892 INFO L225 Difference]: With dead ends: 44 [2021-10-11 02:23:10,892 INFO L226 Difference]: Without dead ends: 42 [2021-10-11 02:23:10,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:23:10,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-11 02:23:10,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 27. [2021-10-11 02:23:10,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 02:23:10,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2021-10-11 02:23:10,908 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 13 [2021-10-11 02:23:10,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:10,908 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2021-10-11 02:23:10,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:23:10,908 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2021-10-11 02:23:10,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:23:10,909 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:10,909 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:10,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:23:10,911 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:10,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:10,916 INFO L82 PathProgramCache]: Analyzing trace with hash 541504680, now seen corresponding path program 1 times [2021-10-11 02:23:10,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:10,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795055413] [2021-10-11 02:23:10,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:11,139 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 02:23:11,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795055413] [2021-10-11 02:23:11,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788090916] [2021-10-11 02:23:11,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ccb9f7-f5ea-408b-bd9a-d7e56303a731/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 02:23:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:11,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-11 02:23:11,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:11,377 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 02:23:11,377 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:23:11,455 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2021-10-11 02:23:11,457 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:23:11,471 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:23:11,474 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 4 [2021-10-11 02:23:11,477 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 02:23:11,489 INFO L625 ElimStorePlain]: treesize reduction 10, result has 47.4 percent of original size [2021-10-11 02:23:11,490 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:23:11,490 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:39, output treesize:9 [2021-10-11 02:23:11,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:11,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:23:11,552 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2021-10-11 02:23:11,553 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:23:11,555 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:23:11,558 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:23:11,559 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:23:11,625 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2021-10-11 02:23:11,626 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:23:11,628 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2021-10-11 02:23:11,632 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2021-10-11 02:23:11,635 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:23:11,638 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2021-10-11 02:23:11,641 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2021-10-11 02:23:11,645 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-10-11 02:23:11,653 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2021-10-11 02:23:11,658 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2021-10-11 02:23:11,660 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2021-10-11 02:23:11,664 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-10-11 02:23:11,671 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2021-10-11 02:23:11,674 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2021-10-11 02:23:11,676 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2021-10-11 02:23:11,734 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-10-11 02:23:11,736 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:23:11,742 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-10-11 02:23:11,745 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 02:23:11,755 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:23:11,756 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 19 treesize of output 19 [2021-10-11 02:23:11,759 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:23:11,761 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:23:11,762 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-11 02:23:11,797 INFO L625 ElimStorePlain]: treesize reduction 67, result has 26.4 percent of original size [2021-10-11 02:23:11,797 INFO L515 ElimStorePlain]: Eliminatee |#memory_int| vanished before elimination [2021-10-11 02:23:11,799 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-2 vars, End of recursive call: and 3 xjuncts. [2021-10-11 02:23:11,799 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 7 variables, input treesize:128, output treesize:20 [2021-10-11 02:23:11,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:11,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:23:11,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [7] total 16 [2021-10-11 02:23:11,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377752912] [2021-10-11 02:23:11,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-10-11 02:23:11,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:11,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-11 02:23:11,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-10-11 02:23:11,852 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand 11 states. [2021-10-11 02:23:12,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:12,154 INFO L93 Difference]: Finished difference Result 94 states and 115 transitions. [2021-10-11 02:23:12,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-11 02:23:12,154 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2021-10-11 02:23:12,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:12,157 INFO L225 Difference]: With dead ends: 94 [2021-10-11 02:23:12,157 INFO L226 Difference]: Without dead ends: 54 [2021-10-11 02:23:12,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2021-10-11 02:23:12,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-11 02:23:12,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 25. [2021-10-11 02:23:12,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-10-11 02:23:12,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-10-11 02:23:12,171 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 15 [2021-10-11 02:23:12,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:12,171 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-10-11 02:23:12,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-10-11 02:23:12,171 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-10-11 02:23:12,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 02:23:12,173 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:12,173 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:12,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-11 02:23:12,401 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:12,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:12,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1280326229, now seen corresponding path program 1 times [2021-10-11 02:23:12,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:12,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698534221] [2021-10-11 02:23:12,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:12,544 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 02:23:12,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698534221] [2021-10-11 02:23:12,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878437997] [2021-10-11 02:23:12,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ccb9f7-f5ea-408b-bd9a-d7e56303a731/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 02:23:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:12,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-11 02:23:12,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:12,715 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 02:23:12,715 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:23:12,757 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 4 [2021-10-11 02:23:12,759 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:23:12,769 INFO L625 ElimStorePlain]: treesize reduction 18, result has 28.0 percent of original size [2021-10-11 02:23:12,769 INFO L515 ElimStorePlain]: Eliminatee v_prenex_7 vanished before elimination [2021-10-11 02:23:12,770 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:23:12,770 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:35, output treesize:7 [2021-10-11 02:23:12,798 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:23:12,800 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 02:23:12,803 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:23:12,823 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 02:23:12,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:23:12,838 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:23:12,863 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2021-10-11 02:23:12,863 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:23:12,865 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:23:12,866 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:23:12,945 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2021-10-11 02:23:12,946 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:23:12,947 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2021-10-11 02:23:12,950 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2021-10-11 02:23:12,952 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:23:12,954 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2021-10-11 02:23:12,956 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2021-10-11 02:23:12,959 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-10-11 02:23:12,964 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2021-10-11 02:23:12,967 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2021-10-11 02:23:12,969 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2021-10-11 02:23:12,972 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-10-11 02:23:12,977 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2021-10-11 02:23:12,979 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2021-10-11 02:23:12,981 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2021-10-11 02:23:13,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-11 02:23:13,025 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-10-11 02:23:13,029 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:23:13,035 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-10-11 02:23:13,037 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 02:23:13,043 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-10-11 02:23:13,045 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-11 02:23:13,078 INFO L625 ElimStorePlain]: treesize reduction 67, result has 29.5 percent of original size [2021-10-11 02:23:13,078 INFO L515 ElimStorePlain]: Eliminatee v_prenex_10 vanished before elimination [2021-10-11 02:23:13,082 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-2 vars, End of recursive call: and 3 xjuncts. [2021-10-11 02:23:13,082 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 7 variables, input treesize:132, output treesize:22 [2021-10-11 02:23:13,156 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 02:23:13,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [104698722] [2021-10-11 02:23:13,181 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-10-11 02:23:13,181 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:23:13,188 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:23:13,194 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:23:13,195 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:23:13,694 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:23:14,056 WARN L197 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 104 [2021-10-11 02:23:14,316 WARN L197 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2021-10-11 02:23:14,700 WARN L197 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2021-10-11 02:23:14,869 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2021-10-11 02:23:15,051 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2021-10-11 02:23:15,316 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2021-10-11 02:23:16,058 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2021-10-11 02:23:16,433 WARN L197 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 104 [2021-10-11 02:23:16,436 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:23:16,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:23:16,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2021-10-11 02:23:16,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896425795] [2021-10-11 02:23:16,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-10-11 02:23:16,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:16,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-11 02:23:16,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2021-10-11 02:23:16,439 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 19 states. [2021-10-11 02:23:17,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:17,404 INFO L93 Difference]: Finished difference Result 143 states and 176 transitions. [2021-10-11 02:23:17,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-11 02:23:17,404 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 17 [2021-10-11 02:23:17,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:17,407 INFO L225 Difference]: With dead ends: 143 [2021-10-11 02:23:17,407 INFO L226 Difference]: Without dead ends: 141 [2021-10-11 02:23:17,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=487, Invalid=2483, Unknown=0, NotChecked=0, Total=2970 [2021-10-11 02:23:17,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-10-11 02:23:17,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 41. [2021-10-11 02:23:17,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-10-11 02:23:17,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2021-10-11 02:23:17,418 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 17 [2021-10-11 02:23:17,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:17,419 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2021-10-11 02:23:17,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-10-11 02:23:17,419 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2021-10-11 02:23:17,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 02:23:17,420 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:17,420 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:17,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:23:17,633 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:17,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:17,633 INFO L82 PathProgramCache]: Analyzing trace with hash -989518938, now seen corresponding path program 2 times [2021-10-11 02:23:17,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:17,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043997290] [2021-10-11 02:23:17,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:17,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:23:17,680 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:23:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:23:17,723 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:23:17,756 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:23:17,756 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:23:17,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-10-11 02:23:17,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:23:17 BoogieIcfgContainer [2021-10-11 02:23:17,815 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:23:17,816 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:23:17,816 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:23:17,816 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:23:17,816 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:10" (3/4) ... [2021-10-11 02:23:17,818 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:23:17,896 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ccb9f7-f5ea-408b-bd9a-d7e56303a731/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:23:17,900 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:23:17,901 INFO L168 Benchmark]: Toolchain (without parser) took 8826.56 ms. Allocated memory was 96.5 MB in the beginning and 222.3 MB in the end (delta: 125.8 MB). Free memory was 63.7 MB in the beginning and 160.7 MB in the end (delta: -97.0 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:17,902 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 96.5 MB. Free memory is still 51.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:23:17,902 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.88 ms. Allocated memory is still 96.5 MB. Free memory was 63.5 MB in the beginning and 70.2 MB in the end (delta: -6.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:17,903 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.69 ms. Allocated memory is still 96.5 MB. Free memory was 70.2 MB in the beginning and 68.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:17,903 INFO L168 Benchmark]: Boogie Preprocessor took 40.06 ms. Allocated memory is still 96.5 MB. Free memory was 68.5 MB in the beginning and 67.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:17,903 INFO L168 Benchmark]: RCFGBuilder took 665.07 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 67.2 MB in the beginning and 88.3 MB in the end (delta: -21.1 MB). Peak memory consumption was 33.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:17,904 INFO L168 Benchmark]: TraceAbstraction took 7691.03 ms. Allocated memory was 117.4 MB in the beginning and 222.3 MB in the end (delta: 104.9 MB). Free memory was 87.7 MB in the beginning and 163.8 MB in the end (delta: -76.1 MB). Peak memory consumption was 27.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:17,904 INFO L168 Benchmark]: Witness Printer took 84.57 ms. Allocated memory is still 222.3 MB. Free memory was 163.8 MB in the beginning and 160.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:17,907 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 96.5 MB. Free memory is still 51.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 296.88 ms. Allocated memory is still 96.5 MB. Free memory was 63.5 MB in the beginning and 70.2 MB in the end (delta: -6.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.69 ms. Allocated memory is still 96.5 MB. Free memory was 70.2 MB in the beginning and 68.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.06 ms. Allocated memory is still 96.5 MB. Free memory was 68.5 MB in the beginning and 67.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 665.07 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 67.2 MB in the beginning and 88.3 MB in the end (delta: -21.1 MB). Peak memory consumption was 33.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7691.03 ms. Allocated memory was 117.4 MB in the beginning and 222.3 MB in the end (delta: 104.9 MB). Free memory was 87.7 MB in the beginning and 163.8 MB in the end (delta: -76.1 MB). Peak memory consumption was 27.8 MB. Max. memory is 16.1 GB. * Witness Printer took 84.57 ms. Allocated memory is still 222.3 MB. Free memory was 163.8 MB in the beginning and 160.7 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.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L85] char A [2 + 2 + 4 +1]; [L86] A[2 + 2 + 4] = 0 [L59] int start=0, i=-1, j=-1; [L60] char str2[2]; [L61] COND FALSE !(!str) [L63] i++ [L64] str[i] [L65] case 0: [L80] EXPR str[i] [L80] COND TRUE str[i] != 0 [L63] i++ [L64] str[i] [L65] case 0: [L80] EXPR str[i] [L80] COND TRUE str[i] != 0 [L63] i++ [L64] str[i] [L65] case 0: [L66] EXPR str[start] [L66] (str[start] == ' ') || (str[start] == '\t') [L66] EXPR str[start] [L66] (str[start] == ' ') || (str[start] == '\t') [L66] COND FALSE !((str[start] == ' ') || (str[start] == '\t')) [L67] EXPR str[start] [L67] COND FALSE !(str[start] == '"') [L68] j = i-1 [L69] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) [L69] EXPR str[j] [L69] EXPR (str[j] == ' ') || (str[j] == '\t') [L69] EXPR str[j] [L69] EXPR (str[j] == ' ') || (str[j] == '\t') [L69] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) [L69] COND FALSE !((0 < j) && ((str[j] == ' ') || (str[j] == '\t'))) [L70] (0 < j) && (str[j] == '"') [L70] EXPR str[j] [L70] (0 < j) && (str[j] == '"') [L70] COND FALSE !((0 < j) && (str[j] == '"')) [L71] COND TRUE start<=j [L41] return strncpy(dest,src,n); [L14] COND TRUE !(cond) [L15] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.5s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 76 SDtfs, 343 SDslu, 293 SDs, 0 SdLazy, 528 SolverSat, 193 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 998 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 144 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 14144 SizeOfPredicates, 27 NumberOfNonLiveVariables, 218 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 4/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...