./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test26-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_918316a7-8f07-4061-860c-0dc306bca25f/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_918316a7-8f07-4061-860c-0dc306bca25f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_918316a7-8f07-4061-860c-0dc306bca25f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_918316a7-8f07-4061-860c-0dc306bca25f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test26-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_918316a7-8f07-4061-860c-0dc306bca25f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_918316a7-8f07-4061-860c-0dc306bca25f/bin/uautomizer --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 8f6e10ab52ab9f08c67c483ecb655de1c57a1f14 ............................................................................................................................................................................................................................................. 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-a4ecdab [2020-11-30 00:46:17,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:46:17,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:46:18,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:46:18,015 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:46:18,016 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:46:18,018 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:46:18,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:46:18,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:46:18,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:46:18,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:46:18,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:46:18,040 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:46:18,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:46:18,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:46:18,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:46:18,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:46:18,060 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:46:18,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:46:18,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:46:18,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:46:18,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:46:18,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:46:18,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:46:18,090 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:46:18,091 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:46:18,091 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:46:18,100 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:46:18,101 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:46:18,103 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:46:18,103 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:46:18,105 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:46:18,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:46:18,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:46:18,111 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:46:18,111 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:46:18,112 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:46:18,112 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:46:18,112 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:46:18,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:46:18,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:46:18,120 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_918316a7-8f07-4061-860c-0dc306bca25f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:46:18,164 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:46:18,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:46:18,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:46:18,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:46:18,168 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:46:18,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:46:18,168 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:46:18,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:46:18,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:46:18,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:46:18,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:46:18,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:46:18,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:46:18,172 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:46:18,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:46:18,172 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:46:18,172 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:46:18,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:46:18,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:46:18,173 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:46:18,174 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:46:18,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:46:18,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:46:18,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:46:18,175 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:46:18,175 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:46:18,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:46:18,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:46:18,176 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:46:18,176 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-vcloud-master/worker/run_dir_918316a7-8f07-4061-860c-0dc306bca25f/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_918316a7-8f07-4061-860c-0dc306bca25f/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f6e10ab52ab9f08c67c483ecb655de1c57a1f14 [2020-11-30 00:46:18,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:46:18,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:46:18,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:46:18,538 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:46:18,539 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:46:18,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_918316a7-8f07-4061-860c-0dc306bca25f/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/test26-2.c [2020-11-30 00:46:18,645 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_918316a7-8f07-4061-860c-0dc306bca25f/bin/uautomizer/data/7b6c43f59/f714655fc54445edb3e9f1dec9562591/FLAG88faac698 [2020-11-30 00:46:19,204 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:46:19,205 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_918316a7-8f07-4061-860c-0dc306bca25f/sv-benchmarks/c/ldv-regression/test26-2.c [2020-11-30 00:46:19,211 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_918316a7-8f07-4061-860c-0dc306bca25f/bin/uautomizer/data/7b6c43f59/f714655fc54445edb3e9f1dec9562591/FLAG88faac698 [2020-11-30 00:46:19,556 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_918316a7-8f07-4061-860c-0dc306bca25f/bin/uautomizer/data/7b6c43f59/f714655fc54445edb3e9f1dec9562591 [2020-11-30 00:46:19,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:46:19,560 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:46:19,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:46:19,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:46:19,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:46:19,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:46:19" (1/1) ... [2020-11-30 00:46:19,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7909f26d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:19, skipping insertion in model container [2020-11-30 00:46:19,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:46:19" (1/1) ... [2020-11-30 00:46:19,578 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:46:19,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:46:19,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:46:19,815 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:46:19,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:46:19,847 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:46:19,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:19 WrapperNode [2020-11-30 00:46:19,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:46:19,850 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:46:19,850 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:46:19,850 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:46:19,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:19" (1/1) ... [2020-11-30 00:46:19,868 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:19" (1/1) ... [2020-11-30 00:46:19,887 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:46:19,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:46:19,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:46:19,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:46:19,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:19" (1/1) ... [2020-11-30 00:46:19,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:19" (1/1) ... [2020-11-30 00:46:19,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:19" (1/1) ... [2020-11-30 00:46:19,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:19" (1/1) ... [2020-11-30 00:46:19,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:19" (1/1) ... [2020-11-30 00:46:19,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:19" (1/1) ... [2020-11-30 00:46:19,908 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:19" (1/1) ... [2020-11-30 00:46:19,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:46:19,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:46:19,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:46:19,911 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:46:19,912 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_918316a7-8f07-4061-860c-0dc306bca25f/bin/uautomizer/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 [2020-11-30 00:46:19,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 00:46:19,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:46:19,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:46:19,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 00:46:19,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:46:19,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:46:20,263 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:46:20,264 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-30 00:46:20,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:46:20 BoogieIcfgContainer [2020-11-30 00:46:20,266 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:46:20,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:46:20,288 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:46:20,293 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:46:20,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:46:19" (1/3) ... [2020-11-30 00:46:20,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a0bb1a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:46:20, skipping insertion in model container [2020-11-30 00:46:20,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:19" (2/3) ... [2020-11-30 00:46:20,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a0bb1a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:46:20, skipping insertion in model container [2020-11-30 00:46:20,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:46:20" (3/3) ... [2020-11-30 00:46:20,297 INFO L111 eAbstractionObserver]: Analyzing ICFG test26-2.c [2020-11-30 00:46:20,322 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:46:20,328 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:46:20,365 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:46:20,392 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:46:20,392 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:46:20,393 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:46:20,393 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:46:20,393 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:46:20,393 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:46:20,394 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:46:20,394 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:46:20,419 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-11-30 00:46:20,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 00:46:20,424 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:46:20,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 00:46:20,425 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:46:20,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:20,433 INFO L82 PathProgramCache]: Analyzing trace with hash 28692805, now seen corresponding path program 1 times [2020-11-30 00:46:20,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:20,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344962248] [2020-11-30 00:46:20,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:20,589 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:20,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:20,654 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:20,697 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:46:20,698 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:46:20,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:46:20,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:46:20 BoogieIcfgContainer [2020-11-30 00:46:20,744 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:46:20,747 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:46:20,748 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:46:20,748 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:46:20,749 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:46:20" (3/4) ... [2020-11-30 00:46:20,751 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:46:20,800 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_918316a7-8f07-4061-860c-0dc306bca25f/bin/uautomizer/witness.graphml [2020-11-30 00:46:20,801 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:46:20,803 INFO L168 Benchmark]: Toolchain (without parser) took 1241.55 ms. Allocated memory is still 125.8 MB. Free memory was 94.1 MB in the beginning and 72.5 MB in the end (delta: 21.6 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:46:20,805 INFO L168 Benchmark]: CDTParser took 5.74 ms. Allocated memory is still 79.7 MB. Free memory was 40.6 MB in the beginning and 40.5 MB in the end (delta: 32.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:46:20,806 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.83 ms. Allocated memory is still 125.8 MB. Free memory was 94.1 MB in the beginning and 102.3 MB in the end (delta: -8.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:46:20,807 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.13 ms. Allocated memory is still 125.8 MB. Free memory was 102.3 MB in the beginning and 101.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:46:20,809 INFO L168 Benchmark]: Boogie Preprocessor took 22.13 ms. Allocated memory is still 125.8 MB. Free memory was 101.1 MB in the beginning and 99.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:46:20,810 INFO L168 Benchmark]: RCFGBuilder took 355.21 ms. Allocated memory is still 125.8 MB. Free memory was 99.8 MB in the beginning and 88.1 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:46:20,811 INFO L168 Benchmark]: TraceAbstraction took 466.77 ms. Allocated memory is still 125.8 MB. Free memory was 87.7 MB in the beginning and 74.6 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:46:20,812 INFO L168 Benchmark]: Witness Printer took 53.51 ms. Allocated memory is still 125.8 MB. Free memory was 74.6 MB in the beginning and 72.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:46:20,817 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 5.74 ms. Allocated memory is still 79.7 MB. Free memory was 40.6 MB in the beginning and 40.5 MB in the end (delta: 32.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 286.83 ms. Allocated memory is still 125.8 MB. Free memory was 94.1 MB in the beginning and 102.3 MB in the end (delta: -8.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.13 ms. Allocated memory is still 125.8 MB. Free memory was 102.3 MB in the beginning and 101.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.13 ms. Allocated memory is still 125.8 MB. Free memory was 101.1 MB in the beginning and 99.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 355.21 ms. Allocated memory is still 125.8 MB. Free memory was 99.8 MB in the beginning and 88.1 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 466.77 ms. Allocated memory is still 125.8 MB. Free memory was 87.7 MB in the beginning and 74.6 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 53.51 ms. Allocated memory is still 125.8 MB. Free memory was 74.6 MB in the beginning and 72.5 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: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L5-L7] struct dummy { int a, b; } global = {0, 1}; VAL [global={5:0}] [L16] struct dummy *pd = &global; [L11] EXPR \read(*pb) [L11] *pa = *pb [L20] EXPR pd->a [L20] EXPR global.b VAL [global={5:0}] [L20] COND TRUE pd->a != global.b [L3] __assert_fail("0", "test26-2.c", 3, "reach_error") VAL [global={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 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=10occurred 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, 5 NumberOfCodeBlocks, 5 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...