./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/NonTerminationSimple2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78cee001-af9b-43c8-8d75-3d5473dfaed1/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78cee001-af9b-43c8-8d75-3d5473dfaed1/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78cee001-af9b-43c8-8d75-3d5473dfaed1/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78cee001-af9b-43c8-8d75-3d5473dfaed1/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/NonTerminationSimple2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78cee001-af9b-43c8-8d75-3d5473dfaed1/bin/utaipan-mTDlp9Zugs/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78cee001-af9b-43c8-8d75-3d5473dfaed1/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 23726cd354436105a1bc7112dada13904e5f655b ............................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:15:39,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:15:39,008 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:15:39,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:15:39,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:15:39,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:15:39,077 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:15:39,082 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:15:39,085 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:15:39,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:15:39,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:15:39,096 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:15:39,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:15:39,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:15:39,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:15:39,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:15:39,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:15:39,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:15:39,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:15:39,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:15:39,118 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:15:39,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:15:39,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:15:39,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:15:39,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:15:39,127 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:15:39,127 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:15:39,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:15:39,129 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:15:39,130 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:15:39,131 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:15:39,132 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:15:39,133 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:15:39,134 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:15:39,135 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:15:39,135 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:15:39,136 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:15:39,137 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:15:39,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:15:39,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:15:39,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:15:39,140 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78cee001-af9b-43c8-8d75-3d5473dfaed1/bin/utaipan-mTDlp9Zugs/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-16 03:15:39,182 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:15:39,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:15:39,185 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:15:39,185 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:15:39,185 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:15:39,186 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:15:39,186 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 03:15:39,186 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:15:39,186 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:15:39,186 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 03:15:39,188 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 03:15:39,188 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:15:39,188 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 03:15:39,188 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 03:15:39,188 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 03:15:39,189 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:15:39,189 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-16 03:15:39,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 03:15:39,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:15:39,190 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:15:39,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:15:39,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:15:39,191 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-16 03:15:39,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:15:39,191 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:15:39,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:15:39,191 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:15:39,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:15:39,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:15:39,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:15:39,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:15:39,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:15:39,195 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 03:15:39,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 03:15:39,195 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:15:39,196 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:15:39,196 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:15:39,196 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_78cee001-af9b-43c8-8d75-3d5473dfaed1/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78cee001-af9b-43c8-8d75-3d5473dfaed1/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23726cd354436105a1bc7112dada13904e5f655b [2021-10-16 03:15:39,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:15:39,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:15:39,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:15:39,528 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:15:39,529 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:15:39,530 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78cee001-af9b-43c8-8d75-3d5473dfaed1/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/termination-crafted/NonTerminationSimple2.c [2021-10-16 03:15:39,608 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78cee001-af9b-43c8-8d75-3d5473dfaed1/bin/utaipan-mTDlp9Zugs/data/f1230972a/08790f4ef8a143e1a0d4d8f70541d992/FLAG90df83712 [2021-10-16 03:15:40,141 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:15:40,142 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78cee001-af9b-43c8-8d75-3d5473dfaed1/sv-benchmarks/c/termination-crafted/NonTerminationSimple2.c [2021-10-16 03:15:40,149 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78cee001-af9b-43c8-8d75-3d5473dfaed1/bin/utaipan-mTDlp9Zugs/data/f1230972a/08790f4ef8a143e1a0d4d8f70541d992/FLAG90df83712 [2021-10-16 03:15:40,527 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78cee001-af9b-43c8-8d75-3d5473dfaed1/bin/utaipan-mTDlp9Zugs/data/f1230972a/08790f4ef8a143e1a0d4d8f70541d992 [2021-10-16 03:15:40,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:15:40,534 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:15:40,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:15:40,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:15:40,550 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:15:40,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:15:40" (1/1) ... [2021-10-16 03:15:40,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@119ab9fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:15:40, skipping insertion in model container [2021-10-16 03:15:40,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:15:40" (1/1) ... [2021-10-16 03:15:40,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:15:40,587 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:15:40,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:15:40,758 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:15:40,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:15:40,787 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:15:40,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:15:40 WrapperNode [2021-10-16 03:15:40,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:15:40,790 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:15:40,790 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:15:40,790 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:15:40,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:15:40" (1/1) ... [2021-10-16 03:15:40,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:15:40" (1/1) ... [2021-10-16 03:15:40,826 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:15:40,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:15:40,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:15:40,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:15:40,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:15:40" (1/1) ... [2021-10-16 03:15:40,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:15:40" (1/1) ... [2021-10-16 03:15:40,839 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:15:40" (1/1) ... [2021-10-16 03:15:40,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:15:40" (1/1) ... [2021-10-16 03:15:40,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:15:40" (1/1) ... [2021-10-16 03:15:40,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:15:40" (1/1) ... [2021-10-16 03:15:40,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:15:40" (1/1) ... [2021-10-16 03:15:40,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:15:40,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:15:40,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:15:40,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:15:40,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:15:40" (1/1) ... [2021-10-16 03:15:40,859 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:15:40,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78cee001-af9b-43c8-8d75-3d5473dfaed1/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:15:40,885 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78cee001-af9b-43c8-8d75-3d5473dfaed1/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:15:40,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78cee001-af9b-43c8-8d75-3d5473dfaed1/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:15:40,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:15:40,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:15:41,176 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:15:41,177 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-16 03:15:41,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:15:41 BoogieIcfgContainer [2021-10-16 03:15:41,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:15:41,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:15:41,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:15:41,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:15:41,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:15:40" (1/3) ... [2021-10-16 03:15:41,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c659332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:15:41, skipping insertion in model container [2021-10-16 03:15:41,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:15:40" (2/3) ... [2021-10-16 03:15:41,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c659332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:15:41, skipping insertion in model container [2021-10-16 03:15:41,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:15:41" (3/3) ... [2021-10-16 03:15:41,206 INFO L111 eAbstractionObserver]: Analyzing ICFG NonTerminationSimple2.c [2021-10-16 03:15:41,214 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:15:41,215 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-16 03:15:41,266 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:15:41,286 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 03:15:41,286 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-16 03:15:41,301 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 4 states have (on average 1.75) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:15:41,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-16 03:15:41,306 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:15:41,307 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-16 03:15:41,308 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-10-16 03:15:41,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:15:41,314 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2021-10-16 03:15:41,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:15:41,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775284098] [2021-10-16 03:15:41,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:15:41,326 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:15:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 03:15:41,416 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 03:15:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 03:15:41,436 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 03:15:41,439 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 03:15:41,440 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-16 03:15:41,442 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-16 03:15:41,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 03:15:41,450 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 03:15:41,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:15:41 BoogieIcfgContainer [2021-10-16 03:15:41,463 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 03:15:41,464 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 03:15:41,464 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 03:15:41,465 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 03:15:41,465 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:15:41" (3/4) ... [2021-10-16 03:15:41,467 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-16 03:15:41,502 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78cee001-af9b-43c8-8d75-3d5473dfaed1/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 03:15:41,502 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 03:15:41,505 INFO L168 Benchmark]: Toolchain (without parser) took 969.74 ms. Allocated memory is still 104.9 MB. Free memory was 73.3 MB in the beginning and 74.2 MB in the end (delta: -957.4 kB). Peak memory consumption was 1.6 MB. Max. memory is 16.1 GB. [2021-10-16 03:15:41,505 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 81.8 MB. Free memory is still 48.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:15:41,506 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.72 ms. Allocated memory is still 104.9 MB. Free memory was 73.1 MB in the beginning and 64.6 MB in the end (delta: 8.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 03:15:41,507 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.85 ms. Allocated memory is still 104.9 MB. Free memory was 64.6 MB in the beginning and 63.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:15:41,508 INFO L168 Benchmark]: Boogie Preprocessor took 20.89 ms. Allocated memory is still 104.9 MB. Free memory was 63.3 MB in the beginning and 62.5 MB in the end (delta: 840.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:15:41,508 INFO L168 Benchmark]: RCFGBuilder took 330.77 ms. Allocated memory is still 104.9 MB. Free memory was 62.3 MB in the beginning and 54.1 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 03:15:41,509 INFO L168 Benchmark]: TraceAbstraction took 281.99 ms. Allocated memory is still 104.9 MB. Free memory was 53.5 MB in the beginning and 75.9 MB in the end (delta: -22.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:15:41,510 INFO L168 Benchmark]: Witness Printer took 38.15 ms. Allocated memory is still 104.9 MB. Free memory was 75.9 MB in the beginning and 74.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:15:41,514 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 81.8 MB. Free memory is still 48.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 243.72 ms. Allocated memory is still 104.9 MB. Free memory was 73.1 MB in the beginning and 64.6 MB in the end (delta: 8.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.85 ms. Allocated memory is still 104.9 MB. Free memory was 64.6 MB in the beginning and 63.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.89 ms. Allocated memory is still 104.9 MB. Free memory was 63.3 MB in the beginning and 62.5 MB in the end (delta: 840.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 330.77 ms. Allocated memory is still 104.9 MB. Free memory was 62.3 MB in the beginning and 54.1 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 281.99 ms. Allocated memory is still 104.9 MB. Free memory was 53.5 MB in the beginning and 75.9 MB in the end (delta: -22.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 38.15 ms. Allocated memory is still 104.9 MB. Free memory was 75.9 MB in the beginning and 74.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 17]: integer overflow possible integer overflow possible We found a FailurePath: [L14] int x; [L15] x = __VERIFIER_nondet_int() [L16] COND TRUE x >= 0 [L17] x + 1 - UnprovableResult [Line: 17]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 184.4ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 9.3ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 3.9ms SsaConstructionTime, 14.1ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-16 03:15:41,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78cee001-af9b-43c8-8d75-3d5473dfaed1/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...