./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/s22iff.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_c928ea80-df4a-4e82-a234-04bf73456d10/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928ea80-df4a-4e82-a234-04bf73456d10/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928ea80-df4a-4e82-a234-04bf73456d10/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928ea80-df4a-4e82-a234-04bf73456d10/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/s22iff.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928ea80-df4a-4e82-a234-04bf73456d10/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928ea80-df4a-4e82-a234-04bf73456d10/bin/uautomizer-Z5i5R5N3CC --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 12a58f1f4c097af173827540d3229eb9057be92a ................................................................................................................................................................................................................................................................................................................................................................ 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 00:27:19,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:27:19,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:27:19,223 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:27:19,223 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:27:19,225 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:27:19,227 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:27:19,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:27:19,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:27:19,248 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:27:19,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:27:19,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:27:19,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:27:19,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:27:19,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:27:19,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:27:19,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:27:19,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:27:19,268 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:27:19,278 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:27:19,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:27:19,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:27:19,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:27:19,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:27:19,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:27:19,292 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:27:19,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:27:19,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:27:19,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:27:19,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:27:19,304 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:27:19,305 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:27:19,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:27:19,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:27:19,311 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:27:19,311 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:27:19,312 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:27:19,312 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:27:19,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:27:19,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:27:19,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:27:19,317 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928ea80-df4a-4e82-a234-04bf73456d10/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:27:19,363 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:27:19,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:27:19,365 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:27:19,365 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:27:19,366 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:27:19,366 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:27:19,366 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:27:19,367 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:27:19,367 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:27:19,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:27:19,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:27:19,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:27:19,368 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:27:19,368 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:27:19,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:27:19,369 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:27:19,369 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:27:19,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:27:19,370 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:27:19,370 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:27:19,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:27:19,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:27:19,371 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:27:19,371 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:27:19,371 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:27:19,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:27:19,372 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:27:19,372 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:27:19,372 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_c928ea80-df4a-4e82-a234-04bf73456d10/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928ea80-df4a-4e82-a234-04bf73456d10/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12a58f1f4c097af173827540d3229eb9057be92a [2021-10-11 00:27:19,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:27:19,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:27:19,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:27:19,696 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:27:19,699 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:27:19,700 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928ea80-df4a-4e82-a234-04bf73456d10/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/array-fpi/s22iff.c [2021-10-11 00:27:19,790 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928ea80-df4a-4e82-a234-04bf73456d10/bin/uautomizer-Z5i5R5N3CC/data/3a504a77a/31db45a1402642efb2a53e4622283873/FLAG382a2c3bb [2021-10-11 00:27:20,422 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:27:20,428 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928ea80-df4a-4e82-a234-04bf73456d10/sv-benchmarks/c/array-fpi/s22iff.c [2021-10-11 00:27:20,441 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928ea80-df4a-4e82-a234-04bf73456d10/bin/uautomizer-Z5i5R5N3CC/data/3a504a77a/31db45a1402642efb2a53e4622283873/FLAG382a2c3bb [2021-10-11 00:27:20,761 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928ea80-df4a-4e82-a234-04bf73456d10/bin/uautomizer-Z5i5R5N3CC/data/3a504a77a/31db45a1402642efb2a53e4622283873 [2021-10-11 00:27:20,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:27:20,766 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:27:20,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:27:20,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:27:20,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:27:20,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:27:20" (1/1) ... [2021-10-11 00:27:20,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25089edc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:20, skipping insertion in model container [2021-10-11 00:27:20,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:27:20" (1/1) ... [2021-10-11 00:27:20,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:27:20,808 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:27:20,958 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_c928ea80-df4a-4e82-a234-04bf73456d10/sv-benchmarks/c/array-fpi/s22iff.c[589,602] [2021-10-11 00:27:20,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:27:20,985 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:27:21,036 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_c928ea80-df4a-4e82-a234-04bf73456d10/sv-benchmarks/c/array-fpi/s22iff.c[589,602] [2021-10-11 00:27:21,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:27:21,068 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:27:21,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:21 WrapperNode [2021-10-11 00:27:21,069 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:27:21,070 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:27:21,071 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:27:21,071 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:27:21,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:21" (1/1) ... [2021-10-11 00:27:21,090 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:21" (1/1) ... [2021-10-11 00:27:21,116 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:27:21,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:27:21,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:27:21,117 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:27:21,127 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:21" (1/1) ... [2021-10-11 00:27:21,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:21" (1/1) ... [2021-10-11 00:27:21,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:21" (1/1) ... [2021-10-11 00:27:21,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:21" (1/1) ... [2021-10-11 00:27:21,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:21" (1/1) ... [2021-10-11 00:27:21,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:21" (1/1) ... [2021-10-11 00:27:21,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:21" (1/1) ... [2021-10-11 00:27:21,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:27:21,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:27:21,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:27:21,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:27:21,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:21" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928ea80-df4a-4e82-a234-04bf73456d10/bin/uautomizer-Z5i5R5N3CC/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 00:27:21,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:27:21,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:27:21,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 00:27:21,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 00:27:21,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:27:21,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:27:21,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 00:27:21,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 00:27:21,496 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:27:21,496 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-11 00:27:21,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:27:21 BoogieIcfgContainer [2021-10-11 00:27:21,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:27:21,500 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:27:21,500 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:27:21,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:27:21,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:27:20" (1/3) ... [2021-10-11 00:27:21,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a133a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:27:21, skipping insertion in model container [2021-10-11 00:27:21,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:21" (2/3) ... [2021-10-11 00:27:21,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a133a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:27:21, skipping insertion in model container [2021-10-11 00:27:21,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:27:21" (3/3) ... [2021-10-11 00:27:21,506 INFO L111 eAbstractionObserver]: Analyzing ICFG s22iff.c [2021-10-11 00:27:21,519 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:27:21,523 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 00:27:21,534 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 00:27:21,557 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:27:21,558 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:27:21,558 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:27:21,558 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:27:21,558 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:27:21,558 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:27:21,559 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:27:21,559 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:27:21,572 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2021-10-11 00:27:21,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 00:27:21,576 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:21,577 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:27:21,577 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:21,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:21,583 INFO L82 PathProgramCache]: Analyzing trace with hash -845308063, now seen corresponding path program 1 times [2021-10-11 00:27:21,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:21,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528924733] [2021-10-11 00:27:21,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:21,831 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 00:27:21,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528924733] [2021-10-11 00:27:21,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:21,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:27:21,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997191815] [2021-10-11 00:27:21,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:27:21,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:27:21,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:27:21,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:27:21,861 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2021-10-11 00:27:21,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:21,878 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2021-10-11 00:27:21,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:27:21,879 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2021-10-11 00:27:21,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:21,896 INFO L225 Difference]: With dead ends: 42 [2021-10-11 00:27:21,896 INFO L226 Difference]: Without dead ends: 19 [2021-10-11 00:27:21,901 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 00:27:21,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-11 00:27:21,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-11 00:27:21,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-11 00:27:21,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-10-11 00:27:21,934 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 13 [2021-10-11 00:27:21,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:21,934 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-10-11 00:27:21,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:27:21,934 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-10-11 00:27:21,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 00:27:21,935 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:21,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:27:21,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:27:21,936 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:21,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:21,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1238662774, now seen corresponding path program 1 times [2021-10-11 00:27:21,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:21,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281984475] [2021-10-11 00:27:21,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:22,076 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 00:27:22,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281984475] [2021-10-11 00:27:22,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:22,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:27:22,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397787212] [2021-10-11 00:27:22,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:27:22,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:27:22,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:27:22,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:27:22,083 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 4 states. [2021-10-11 00:27:22,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:22,170 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2021-10-11 00:27:22,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:27:22,171 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2021-10-11 00:27:22,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:22,172 INFO L225 Difference]: With dead ends: 39 [2021-10-11 00:27:22,172 INFO L226 Difference]: Without dead ends: 27 [2021-10-11 00:27:22,173 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 00:27:22,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-11 00:27:22,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2021-10-11 00:27:22,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-10-11 00:27:22,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-10-11 00:27:22,178 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 13 [2021-10-11 00:27:22,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:22,178 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-10-11 00:27:22,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:27:22,179 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-10-11 00:27:22,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 00:27:22,179 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:22,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:27:22,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:27:22,180 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:22,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:22,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1944018757, now seen corresponding path program 1 times [2021-10-11 00:27:22,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:22,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639319458] [2021-10-11 00:27:22,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:22,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:22,222 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:22,259 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:22,291 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:27:22,292 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:27:22,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 00:27:22,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:27:22 BoogieIcfgContainer [2021-10-11 00:27:22,341 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:27:22,341 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:27:22,341 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:27:22,342 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:27:22,342 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:27:21" (3/4) ... [2021-10-11 00:27:22,343 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 00:27:22,436 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928ea80-df4a-4e82-a234-04bf73456d10/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:27:22,436 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:27:22,439 INFO L168 Benchmark]: Toolchain (without parser) took 1671.49 ms. Allocated memory is still 125.8 MB. Free memory was 91.8 MB in the beginning and 100.3 MB in the end (delta: -8.4 MB). Peak memory consumption was 47.6 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:22,439 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 88.1 MB. Free memory was 46.0 MB in the beginning and 46.0 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:27:22,440 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.78 ms. Allocated memory is still 125.8 MB. Free memory was 91.6 MB in the beginning and 101.6 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:22,441 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.67 ms. Allocated memory is still 125.8 MB. Free memory was 101.6 MB in the beginning and 100.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:22,442 INFO L168 Benchmark]: Boogie Preprocessor took 34.76 ms. Allocated memory is still 125.8 MB. Free memory was 100.1 MB in the beginning and 98.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:22,442 INFO L168 Benchmark]: RCFGBuilder took 345.58 ms. Allocated memory is still 125.8 MB. Free memory was 98.6 MB in the beginning and 82.7 MB in the end (delta: 16.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:22,443 INFO L168 Benchmark]: TraceAbstraction took 841.53 ms. Allocated memory is still 125.8 MB. Free memory was 81.9 MB in the beginning and 45.0 MB in the end (delta: 36.9 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:22,444 INFO L168 Benchmark]: Witness Printer took 95.71 ms. Allocated memory is still 125.8 MB. Free memory was 45.0 MB in the beginning and 100.3 MB in the end (delta: -55.3 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:22,448 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 88.1 MB. Free memory was 46.0 MB in the beginning and 46.0 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 298.78 ms. Allocated memory is still 125.8 MB. Free memory was 91.6 MB in the beginning and 101.6 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.67 ms. Allocated memory is still 125.8 MB. Free memory was 101.6 MB in the beginning and 100.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.76 ms. Allocated memory is still 125.8 MB. Free memory was 100.1 MB in the beginning and 98.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 345.58 ms. Allocated memory is still 125.8 MB. Free memory was 98.6 MB in the beginning and 82.7 MB in the end (delta: 16.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 841.53 ms. Allocated memory is still 125.8 MB. Free memory was 81.9 MB in the beginning and 45.0 MB in the end (delta: 36.9 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. * Witness Printer took 95.71 ms. Allocated memory is still 125.8 MB. Free memory was 45.0 MB in the beginning and 100.3 MB in the end (delta: -55.3 MB). Peak memory consumption was 4.5 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; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) VAL [N=1] [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 1 [L32] i=0 VAL [N=1] [L32] COND TRUE i