./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test30-2.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_f3cf0700-f7ce-44dd-b47b-998130ed00f5/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf0700-f7ce-44dd-b47b-998130ed00f5/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_f3cf0700-f7ce-44dd-b47b-998130ed00f5/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf0700-f7ce-44dd-b47b-998130ed00f5/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test30-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf0700-f7ce-44dd-b47b-998130ed00f5/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_f3cf0700-f7ce-44dd-b47b-998130ed00f5/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 4a041130dd25405b7b6d6206fce11b7a492bd0bd ............................................................................................................................................................................................................................................................. 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 02:29:46,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:29:46,040 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:29:46,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:29:46,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:29:46,097 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:29:46,099 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:29:46,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:29:46,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:29:46,112 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:29:46,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:29:46,115 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:29:46,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:29:46,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:29:46,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:29:46,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:29:46,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:29:46,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:29:46,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:29:46,138 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:29:46,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:29:46,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:29:46,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:29:46,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:29:46,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:29:46,155 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:29:46,156 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:29:46,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:29:46,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:29:46,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:29:46,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:29:46,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:29:46,164 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:29:46,166 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:29:46,167 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:29:46,168 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:29:46,169 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:29:46,169 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:29:46,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:29:46,170 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:29:46,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:29:46,173 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf0700-f7ce-44dd-b47b-998130ed00f5/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:29:46,214 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:29:46,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:29:46,216 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:29:46,216 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:29:46,217 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:29:46,217 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:29:46,217 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:29:46,217 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:29:46,218 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:29:46,218 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:29:46,219 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:29:46,219 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:29:46,220 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:29:46,220 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:29:46,220 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:29:46,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:29:46,221 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:29:46,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:29:46,222 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:29:46,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:29:46,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:29:46,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:29:46,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:29:46,223 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:29:46,223 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:29:46,223 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:29:46,224 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:29:46,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:29:46,224 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:29:46,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:29:46,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:29:46,227 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:29:46,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:29:46,227 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:29:46,227 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:29:46,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:29:46,228 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:29:46,228 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:29:46,228 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:29:46,229 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_f3cf0700-f7ce-44dd-b47b-998130ed00f5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf0700-f7ce-44dd-b47b-998130ed00f5/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a041130dd25405b7b6d6206fce11b7a492bd0bd [2021-10-11 02:29:46,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:29:46,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:29:46,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:29:46,526 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:29:46,527 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:29:46,528 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf0700-f7ce-44dd-b47b-998130ed00f5/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/ldv-regression/test30-2.c [2021-10-11 02:29:46,643 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf0700-f7ce-44dd-b47b-998130ed00f5/bin/utaipan-WLngWcDbfI/data/8cdff6d86/13212629e44b4ebaaf5f065926e82aa4/FLAGaf9ec0212 [2021-10-11 02:29:47,193 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:29:47,194 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf0700-f7ce-44dd-b47b-998130ed00f5/sv-benchmarks/c/ldv-regression/test30-2.c [2021-10-11 02:29:47,201 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf0700-f7ce-44dd-b47b-998130ed00f5/bin/utaipan-WLngWcDbfI/data/8cdff6d86/13212629e44b4ebaaf5f065926e82aa4/FLAGaf9ec0212 [2021-10-11 02:29:47,583 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf0700-f7ce-44dd-b47b-998130ed00f5/bin/utaipan-WLngWcDbfI/data/8cdff6d86/13212629e44b4ebaaf5f065926e82aa4 [2021-10-11 02:29:47,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:29:47,587 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:29:47,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:47,589 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:29:47,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:29:47,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:47" (1/1) ... [2021-10-11 02:29:47,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53a934a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:47, skipping insertion in model container [2021-10-11 02:29:47,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:47" (1/1) ... [2021-10-11 02:29:47,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:29:47,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:29:47,788 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_f3cf0700-f7ce-44dd-b47b-998130ed00f5/sv-benchmarks/c/ldv-regression/test30-2.c[560,573] [2021-10-11 02:29:47,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:47,802 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:29:47,816 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_f3cf0700-f7ce-44dd-b47b-998130ed00f5/sv-benchmarks/c/ldv-regression/test30-2.c[560,573] [2021-10-11 02:29:47,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:47,842 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:29:47,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:47 WrapperNode [2021-10-11 02:29:47,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:47,847 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:29:47,847 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:29:47,847 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:29:47,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:47" (1/1) ... [2021-10-11 02:29:47,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:47" (1/1) ... [2021-10-11 02:29:47,888 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:29:47,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:29:47,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:29:47,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:29:47,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:47" (1/1) ... [2021-10-11 02:29:47,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:47" (1/1) ... [2021-10-11 02:29:47,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:47" (1/1) ... [2021-10-11 02:29:47,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:47" (1/1) ... [2021-10-11 02:29:47,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:47" (1/1) ... [2021-10-11 02:29:47,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:47" (1/1) ... [2021-10-11 02:29:47,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:47" (1/1) ... [2021-10-11 02:29:47,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:29:47,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:29:47,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:29:47,929 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:29:47,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:47" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf0700-f7ce-44dd-b47b-998130ed00f5/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 02:29:48,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-11 02:29:48,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-11 02:29:48,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:29:48,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:29:48,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:29:48,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:29:48,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:29:48,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:29:48,354 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:29:48,354 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-11 02:29:48,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:48 BoogieIcfgContainer [2021-10-11 02:29:48,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:29:48,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:29:48,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:29:48,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:29:48,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:29:47" (1/3) ... [2021-10-11 02:29:48,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@461b6e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:48, skipping insertion in model container [2021-10-11 02:29:48,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:47" (2/3) ... [2021-10-11 02:29:48,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@461b6e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:48, skipping insertion in model container [2021-10-11 02:29:48,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:48" (3/3) ... [2021-10-11 02:29:48,366 INFO L111 eAbstractionObserver]: Analyzing ICFG test30-2.c [2021-10-11 02:29:48,381 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:29:48,384 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:29:48,395 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:29:48,419 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:29:48,419 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:29:48,419 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:29:48,419 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:29:48,419 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:29:48,420 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:29:48,420 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:29:48,420 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:29:48,432 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2021-10-11 02:29:48,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 02:29:48,458 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:48,458 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 02:29:48,459 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:48,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:48,470 INFO L82 PathProgramCache]: Analyzing trace with hash 49303, now seen corresponding path program 1 times [2021-10-11 02:29:48,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:48,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610135642] [2021-10-11 02:29:48,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:29:48,666 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:29:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:29:48,767 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:29:48,808 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:29:48,809 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:29:48,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:29:48,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:29:48 BoogieIcfgContainer [2021-10-11 02:29:48,852 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:29:48,855 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:29:48,856 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:29:48,857 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:29:48,857 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:48" (3/4) ... [2021-10-11 02:29:48,861 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:29:48,928 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf0700-f7ce-44dd-b47b-998130ed00f5/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:29:48,928 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:29:48,930 INFO L168 Benchmark]: Toolchain (without parser) took 1341.89 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 63.6 MB in the beginning and 86.8 MB in the end (delta: -23.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:48,930 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 94.4 MB. Free memory was 52.4 MB in the beginning and 52.3 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:48,931 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.90 ms. Allocated memory is still 94.4 MB. Free memory was 63.4 MB in the beginning and 72.1 MB in the end (delta: -8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:48,931 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.02 ms. Allocated memory is still 94.4 MB. Free memory was 72.1 MB in the beginning and 70.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:48,932 INFO L168 Benchmark]: Boogie Preprocessor took 35.12 ms. Allocated memory is still 94.4 MB. Free memory was 70.8 MB in the beginning and 69.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:48,932 INFO L168 Benchmark]: RCFGBuilder took 431.04 ms. Allocated memory is still 94.4 MB. Free memory was 69.6 MB in the beginning and 48.2 MB in the end (delta: 21.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:48,933 INFO L168 Benchmark]: TraceAbstraction took 493.90 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 47.7 MB in the beginning and 88.3 MB in the end (delta: -40.5 MB). Peak memory consumption was 17.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:48,933 INFO L168 Benchmark]: Witness Printer took 72.92 ms. Allocated memory is still 113.2 MB. Free memory was 88.3 MB in the beginning and 86.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:48,937 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 94.4 MB. Free memory was 52.4 MB in the beginning and 52.3 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 256.90 ms. Allocated memory is still 94.4 MB. Free memory was 63.4 MB in the beginning and 72.1 MB in the end (delta: -8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.02 ms. Allocated memory is still 94.4 MB. Free memory was 72.1 MB in the beginning and 70.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.12 ms. Allocated memory is still 94.4 MB. Free memory was 70.8 MB in the beginning and 69.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 431.04 ms. Allocated memory is still 94.4 MB. Free memory was 69.6 MB in the beginning and 48.2 MB in the end (delta: 21.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 493.90 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 47.7 MB in the beginning and 88.3 MB in the end (delta: -40.5 MB). Peak memory consumption was 17.3 MB. Max. memory is 16.1 GB. * Witness Printer took 72.92 ms. Allocated memory is still 113.2 MB. Free memory was 88.3 MB in the beginning and 86.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 33]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L5] int a = 1, b; [L7-L9] struct dummy { int *a, *b; } global = {&a, &b}; [L23] struct dummy *pd = &global; [L18] \read(**pb) [L18] \read(**pb) [L13] EXPR \read(*pb) [L13] *pa = *pb [L27] EXPR \read(a) [L27] EXPR \read(b) VAL [a={6:0}, b={3:0}, global={9:0}] [L27] COND TRUE a != b [L33] reach_error() VAL [a={6:0}, b={3:0}, global={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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...