./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/sina1f.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_061e041d-a621-4924-a770-bca37a8604f5/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061e041d-a621-4924-a770-bca37a8604f5/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_061e041d-a621-4924-a770-bca37a8604f5/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061e041d-a621-4924-a770-bca37a8604f5/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/sina1f.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061e041d-a621-4924-a770-bca37a8604f5/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_061e041d-a621-4924-a770-bca37a8604f5/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 293b7193d9e00486e9d9bef6956f0c56f2572bdc .......................................................................................................................................................................................................................................................................................................................................................... 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 02:32:12,264 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:32:12,266 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:32:12,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:32:12,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:32:12,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:32:12,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:32:12,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:32:12,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:32:12,327 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:32:12,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:32:12,330 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:32:12,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:32:12,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:32:12,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:32:12,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:32:12,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:32:12,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:32:12,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:32:12,353 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:32:12,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:32:12,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:32:12,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:32:12,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:32:12,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:32:12,369 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:32:12,369 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:32:12,371 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:32:12,372 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:32:12,379 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:32:12,379 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:32:12,380 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:32:12,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:32:12,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:32:12,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:32:12,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:32:12,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:32:12,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:32:12,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:32:12,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:32:12,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:32:12,391 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061e041d-a621-4924-a770-bca37a8604f5/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:32:12,437 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:32:12,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:32:12,439 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:32:12,439 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:32:12,440 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:32:12,440 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:32:12,440 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:32:12,440 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:32:12,441 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:32:12,441 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:32:12,442 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:32:12,442 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:32:12,443 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:32:12,443 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:32:12,443 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:32:12,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:32:12,444 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:32:12,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:32:12,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:32:12,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:32:12,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:32:12,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:32:12,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:32:12,446 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:32:12,446 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:32:12,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:32:12,446 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:32:12,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:32:12,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:32:12,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:32:12,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:32:12,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:32:12,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:32:12,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:32:12,450 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:32:12,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:32:12,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:32:12,451 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:32:12,451 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:32:12,451 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_061e041d-a621-4924-a770-bca37a8604f5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061e041d-a621-4924-a770-bca37a8604f5/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 293b7193d9e00486e9d9bef6956f0c56f2572bdc [2021-10-11 02:32:12,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:32:12,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:32:12,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:32:12,819 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:32:12,820 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:32:12,821 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061e041d-a621-4924-a770-bca37a8604f5/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/array-fpi/sina1f.c [2021-10-11 02:32:12,907 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061e041d-a621-4924-a770-bca37a8604f5/bin/utaipan-WLngWcDbfI/data/28a8e7633/a24d61db2a5746e398f87b19ca700f7b/FLAG5bc3d1fc3 [2021-10-11 02:32:13,408 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:32:13,425 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061e041d-a621-4924-a770-bca37a8604f5/sv-benchmarks/c/array-fpi/sina1f.c [2021-10-11 02:32:13,437 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061e041d-a621-4924-a770-bca37a8604f5/bin/utaipan-WLngWcDbfI/data/28a8e7633/a24d61db2a5746e398f87b19ca700f7b/FLAG5bc3d1fc3 [2021-10-11 02:32:13,801 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061e041d-a621-4924-a770-bca37a8604f5/bin/utaipan-WLngWcDbfI/data/28a8e7633/a24d61db2a5746e398f87b19ca700f7b [2021-10-11 02:32:13,803 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:32:13,805 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:32:13,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:32:13,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:32:13,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:32:13,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:13" (1/1) ... [2021-10-11 02:32:13,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c3cbc1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:13, skipping insertion in model container [2021-10-11 02:32:13,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:13" (1/1) ... [2021-10-11 02:32:13,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:32:13,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:32:14,011 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_061e041d-a621-4924-a770-bca37a8604f5/sv-benchmarks/c/array-fpi/sina1f.c[589,602] [2021-10-11 02:32:14,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:32:14,046 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:32:14,062 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_061e041d-a621-4924-a770-bca37a8604f5/sv-benchmarks/c/array-fpi/sina1f.c[589,602] [2021-10-11 02:32:14,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:32:14,103 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:32:14,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:14 WrapperNode [2021-10-11 02:32:14,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:32:14,107 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:32:14,107 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:32:14,107 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:32:14,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:14" (1/1) ... [2021-10-11 02:32:14,124 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:14" (1/1) ... [2021-10-11 02:32:14,150 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:32:14,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:32:14,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:32:14,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:32:14,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:14" (1/1) ... [2021-10-11 02:32:14,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:14" (1/1) ... [2021-10-11 02:32:14,173 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:14" (1/1) ... [2021-10-11 02:32:14,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:14" (1/1) ... [2021-10-11 02:32:14,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:14" (1/1) ... [2021-10-11 02:32:14,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:14" (1/1) ... [2021-10-11 02:32:14,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:14" (1/1) ... [2021-10-11 02:32:14,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:32:14,207 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:32:14,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:32:14,208 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:32:14,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:14" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061e041d-a621-4924-a770-bca37a8604f5/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 02:32:14,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:32:14,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:32:14,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:32:14,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 02:32:14,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:32:14,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:32:14,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:32:14,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:32:14,920 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:32:14,921 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-11 02:32:14,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:14 BoogieIcfgContainer [2021-10-11 02:32:14,923 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:32:14,925 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:32:14,925 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:32:14,929 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:32:14,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:32:13" (1/3) ... [2021-10-11 02:32:14,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef8cca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:32:14, skipping insertion in model container [2021-10-11 02:32:14,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:14" (2/3) ... [2021-10-11 02:32:14,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef8cca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:32:14, skipping insertion in model container [2021-10-11 02:32:14,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:14" (3/3) ... [2021-10-11 02:32:14,932 INFO L111 eAbstractionObserver]: Analyzing ICFG sina1f.c [2021-10-11 02:32:14,958 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:32:14,962 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:32:14,972 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:32:15,009 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:32:15,010 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:32:15,010 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:32:15,010 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:32:15,010 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:32:15,010 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:32:15,010 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:32:15,010 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:32:15,024 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2021-10-11 02:32:15,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:32:15,032 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:15,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:15,034 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:15,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:15,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1896033224, now seen corresponding path program 1 times [2021-10-11 02:32:15,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:15,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513738791] [2021-10-11 02:32:15,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:15,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:15,305 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 02:32:15,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513738791] [2021-10-11 02:32:15,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:15,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:32:15,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568026202] [2021-10-11 02:32:15,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:15,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:15,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:15,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:15,327 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2021-10-11 02:32:15,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:15,394 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2021-10-11 02:32:15,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:15,397 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2021-10-11 02:32:15,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:15,415 INFO L225 Difference]: With dead ends: 20 [2021-10-11 02:32:15,415 INFO L226 Difference]: Without dead ends: 10 [2021-10-11 02:32:15,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:15,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-11 02:32:15,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-11 02:32:15,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-11 02:32:15,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2021-10-11 02:32:15,450 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2021-10-11 02:32:15,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:15,450 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-10-11 02:32:15,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:15,451 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2021-10-11 02:32:15,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:32:15,451 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:15,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:15,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:32:15,452 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:15,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:15,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1521608806, now seen corresponding path program 1 times [2021-10-11 02:32:15,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:15,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107910253] [2021-10-11 02:32:15,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:15,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:15,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:32:15,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107910253] [2021-10-11 02:32:15,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:15,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:32:15,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153395] [2021-10-11 02:32:15,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:32:15,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:15,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:32:15,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:32:15,547 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 4 states. [2021-10-11 02:32:15,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:15,609 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-10-11 02:32:15,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:32:15,610 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-10-11 02:32:15,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:15,612 INFO L225 Difference]: With dead ends: 21 [2021-10-11 02:32:15,612 INFO L226 Difference]: Without dead ends: 16 [2021-10-11 02:32:15,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:32:15,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-11 02:32:15,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 11. [2021-10-11 02:32:15,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-11 02:32:15,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2021-10-11 02:32:15,621 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2021-10-11 02:32:15,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:15,622 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2021-10-11 02:32:15,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:32:15,622 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2021-10-11 02:32:15,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:32:15,623 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:15,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:15,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:32:15,624 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:15,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:15,628 INFO L82 PathProgramCache]: Analyzing trace with hash 70980923, now seen corresponding path program 1 times [2021-10-11 02:32:15,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:15,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195305810] [2021-10-11 02:32:15,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:15,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:32:15,688 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:32:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:32:15,743 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:32:15,767 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:32:15,767 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:32:15,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:32:15,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:32:15 BoogieIcfgContainer [2021-10-11 02:32:15,797 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:32:15,797 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:32:15,798 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:32:15,798 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:32:15,798 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:14" (3/4) ... [2021-10-11 02:32:15,800 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:32:15,844 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061e041d-a621-4924-a770-bca37a8604f5/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:32:15,844 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:32:15,846 INFO L168 Benchmark]: Toolchain (without parser) took 2040.10 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 54.6 MB in the beginning and 71.6 MB in the end (delta: -17.0 MB). Peak memory consumption was 365.8 kB. Max. memory is 16.1 GB. [2021-10-11 02:32:15,846 INFO L168 Benchmark]: CDTParser took 0.96 ms. Allocated memory is still 83.9 MB. Free memory was 39.6 MB in the beginning and 39.6 MB in the end (delta: 42.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:32:15,847 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.33 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 54.3 MB in the beginning and 77.8 MB in the end (delta: -23.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:15,848 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.07 ms. Allocated memory is still 100.7 MB. Free memory was 77.8 MB in the beginning and 76.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:15,848 INFO L168 Benchmark]: Boogie Preprocessor took 54.02 ms. Allocated memory is still 100.7 MB. Free memory was 76.1 MB in the beginning and 75.2 MB in the end (delta: 935.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:32:15,849 INFO L168 Benchmark]: RCFGBuilder took 716.44 ms. Allocated memory is still 100.7 MB. Free memory was 74.8 MB in the beginning and 78.5 MB in the end (delta: -3.7 MB). Peak memory consumption was 25.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:15,849 INFO L168 Benchmark]: TraceAbstraction took 871.58 ms. Allocated memory is still 100.7 MB. Free memory was 78.0 MB in the beginning and 73.7 MB in the end (delta: 4.4 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:15,850 INFO L168 Benchmark]: Witness Printer took 46.74 ms. Allocated memory is still 100.7 MB. Free memory was 73.7 MB in the beginning and 71.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:15,853 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.96 ms. Allocated memory is still 83.9 MB. Free memory was 39.6 MB in the beginning and 39.6 MB in the end (delta: 42.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 299.33 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 54.3 MB in the beginning and 77.8 MB in the end (delta: -23.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.07 ms. Allocated memory is still 100.7 MB. Free memory was 77.8 MB in the beginning and 76.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.02 ms. Allocated memory is still 100.7 MB. Free memory was 76.1 MB in the beginning and 75.2 MB in the end (delta: 935.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 716.44 ms. Allocated memory is still 100.7 MB. Free memory was 74.8 MB in the beginning and 78.5 MB in the end (delta: -3.7 MB). Peak memory consumption was 25.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 871.58 ms. Allocated memory is still 100.7 MB. Free memory was 78.0 MB in the beginning and 73.7 MB in the end (delta: 4.4 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Witness Printer took 46.74 ms. Allocated memory is still 100.7 MB. Free memory was 73.7 MB in the beginning and 71.6 MB in the end (delta: 2.1 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: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) [L27] int i; [L28] int sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 1 [L32] i=0 VAL [N=1] [L32] COND TRUE i