./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_07a93347-6d24-4c20-87ac-a4393b158d2c/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_07a93347-6d24-4c20-87ac-a4393b158d2c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_07a93347-6d24-4c20-87ac-a4393b158d2c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_07a93347-6d24-4c20-87ac-a4393b158d2c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_07a93347-6d24-4c20-87ac-a4393b158d2c/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_07a93347-6d24-4c20-87ac-a4393b158d2c/bin/utaipan --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 6ff697c57265298ce2261966fa58c440777fc865 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.2.0-a4ecdab [2020-11-22 12:47:31,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:47:31,055 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:47:31,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:47:31,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:47:31,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:47:31,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:47:31,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:47:31,153 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:47:31,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:47:31,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:47:31,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:47:31,159 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:47:31,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:47:31,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:47:31,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:47:31,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:47:31,173 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:47:31,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:47:31,179 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:47:31,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:47:31,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:47:31,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:47:31,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:47:31,197 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:47:31,197 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:47:31,198 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:47:31,199 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:47:31,199 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:47:31,200 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:47:31,201 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:47:31,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:47:31,203 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:47:31,204 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:47:31,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:47:31,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:47:31,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:47:31,206 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:47:31,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:47:31,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:47:31,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:47:31,212 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_07a93347-6d24-4c20-87ac-a4393b158d2c/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-11-22 12:47:31,254 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:47:31,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:47:31,256 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:47:31,257 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:47:31,257 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:47:31,257 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:47:31,257 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:47:31,257 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:47:31,258 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:47:31,258 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:47:31,259 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:47:31,259 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:47:31,259 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:47:31,260 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:47:31,260 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:47:31,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:47:31,261 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 12:47:31,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:47:31,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:47:31,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:47:31,262 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:47:31,262 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:47:31,263 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-22 12:47:31,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:47:31,263 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:47:31,263 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:47:31,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:47:31,264 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:47:31,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:47:31,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:47:31,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:47:31,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:47:31,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:47:31,265 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:47:31,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:47:31,266 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:47:31,266 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:47:31,266 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:47:31,266 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-vcloud-master/worker/run_dir_07a93347-6d24-4c20-87ac-a4393b158d2c/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_07a93347-6d24-4c20-87ac-a4393b158d2c/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ff697c57265298ce2261966fa58c440777fc865 [2020-11-22 12:47:31,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:47:31,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:47:31,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:47:31,641 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:47:31,642 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:47:31,643 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_07a93347-6d24-4c20-87ac-a4393b158d2c/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig2.c [2020-11-22 12:47:31,711 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_07a93347-6d24-4c20-87ac-a4393b158d2c/bin/utaipan/data/2f327a934/0ee584c786864503a1061dad7dba08c4/FLAG193f59bcb [2020-11-22 12:47:32,274 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:47:32,275 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_07a93347-6d24-4c20-87ac-a4393b158d2c/sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig2.c [2020-11-22 12:47:32,285 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_07a93347-6d24-4c20-87ac-a4393b158d2c/bin/utaipan/data/2f327a934/0ee584c786864503a1061dad7dba08c4/FLAG193f59bcb [2020-11-22 12:47:32,647 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_07a93347-6d24-4c20-87ac-a4393b158d2c/bin/utaipan/data/2f327a934/0ee584c786864503a1061dad7dba08c4 [2020-11-22 12:47:32,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:47:32,653 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:47:32,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:47:32,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:47:32,667 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:47:32,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:47:32" (1/1) ... [2020-11-22 12:47:32,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@671c78fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:32, skipping insertion in model container [2020-11-22 12:47:32,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:47:32" (1/1) ... [2020-11-22 12:47:32,683 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:47:32,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:47:32,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:47:32,915 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:47:32,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:47:32,961 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:47:32,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:32 WrapperNode [2020-11-22 12:47:32,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:47:32,963 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:47:32,964 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:47:32,964 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:47:32,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:32" (1/1) ... [2020-11-22 12:47:32,976 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:32" (1/1) ... [2020-11-22 12:47:33,001 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:47:33,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:47:33,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:47:33,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:47:33,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:32" (1/1) ... [2020-11-22 12:47:33,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:32" (1/1) ... [2020-11-22 12:47:33,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:32" (1/1) ... [2020-11-22 12:47:33,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:32" (1/1) ... [2020-11-22 12:47:33,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:32" (1/1) ... [2020-11-22 12:47:33,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:32" (1/1) ... [2020-11-22 12:47:33,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:32" (1/1) ... [2020-11-22 12:47:33,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:47:33,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:47:33,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:47:33,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:47:33,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_07a93347-6d24-4c20-87ac-a4393b158d2c/bin/utaipan/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 [2020-11-22 12:47:33,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:47:33,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:47:34,653 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:47:34,654 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-22 12:47:34,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:47:34 BoogieIcfgContainer [2020-11-22 12:47:34,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:47:34,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:47:34,658 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:47:34,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:47:34,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:47:32" (1/3) ... [2020-11-22 12:47:34,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21a6a51b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:47:34, skipping insertion in model container [2020-11-22 12:47:34,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:32" (2/3) ... [2020-11-22 12:47:34,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21a6a51b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:47:34, skipping insertion in model container [2020-11-22 12:47:34,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:47:34" (3/3) ... [2020-11-22 12:47:34,665 INFO L111 eAbstractionObserver]: Analyzing ICFG HarrisLalNoriRajamani-SAS2010-Fig2.c [2020-11-22 12:47:34,675 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:47:34,681 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-22 12:47:34,692 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-22 12:47:34,727 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:47:34,728 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:47:34,728 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:47:34,728 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:47:34,728 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:47:34,728 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:47:34,729 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:47:34,729 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:47:34,742 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-11-22 12:47:34,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-22 12:47:34,749 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:47:34,750 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-22 12:47:34,750 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 12:47:34,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:47:34,756 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2020-11-22 12:47:34,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:47:34,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735850646] [2020-11-22 12:47:34,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:47:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:47:34,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:47:34,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735850646] [2020-11-22 12:47:34,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:47:34,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-22 12:47:34,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996019786] [2020-11-22 12:47:34,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:47:34,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:47:34,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:47:34,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:47:34,924 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2020-11-22 12:47:34,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:47:34,966 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2020-11-22 12:47:34,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:47:34,968 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-11-22 12:47:34,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:47:34,978 INFO L225 Difference]: With dead ends: 18 [2020-11-22 12:47:34,978 INFO L226 Difference]: Without dead ends: 15 [2020-11-22 12:47:34,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:47:35,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-22 12:47:35,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-22 12:47:35,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-22 12:47:35,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-11-22 12:47:35,028 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 3 [2020-11-22 12:47:35,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:47:35,028 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-11-22 12:47:35,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:47:35,029 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-11-22 12:47:35,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-22 12:47:35,030 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:47:35,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-22 12:47:35,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:47:35,030 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 12:47:35,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:47:35,034 INFO L82 PathProgramCache]: Analyzing trace with hash 957349, now seen corresponding path program 1 times [2020-11-22 12:47:35,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:47:35,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526460546] [2020-11-22 12:47:35,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:47:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:47:35,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:47:35,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526460546] [2020-11-22 12:47:35,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:47:35,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-22 12:47:35,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633359453] [2020-11-22 12:47:35,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:47:35,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:47:35,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:47:35,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:47:35,066 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2020-11-22 12:47:35,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:47:35,103 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-11-22 12:47:35,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:47:35,104 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-22 12:47:35,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:47:35,106 INFO L225 Difference]: With dead ends: 25 [2020-11-22 12:47:35,106 INFO L226 Difference]: Without dead ends: 23 [2020-11-22 12:47:35,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:47:35,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-22 12:47:35,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2020-11-22 12:47:35,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-22 12:47:35,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2020-11-22 12:47:35,112 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 4 [2020-11-22 12:47:35,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:47:35,112 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-11-22 12:47:35,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:47:35,113 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2020-11-22 12:47:35,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 12:47:35,113 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:47:35,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 12:47:35,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:47:35,114 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 12:47:35,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:47:35,115 INFO L82 PathProgramCache]: Analyzing trace with hash 935027559, now seen corresponding path program 1 times [2020-11-22 12:47:35,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:47:35,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952052085] [2020-11-22 12:47:35,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:47:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:47:35,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:47:35,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952052085] [2020-11-22 12:47:35,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:47:35,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-22 12:47:35,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441415070] [2020-11-22 12:47:35,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:47:35,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:47:35,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:47:35,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:47:35,267 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand 3 states. [2020-11-22 12:47:35,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:47:35,309 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2020-11-22 12:47:35,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:47:35,310 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-22 12:47:35,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:47:35,311 INFO L225 Difference]: With dead ends: 22 [2020-11-22 12:47:35,311 INFO L226 Difference]: Without dead ends: 21 [2020-11-22 12:47:35,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:47:35,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-11-22 12:47:35,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2020-11-22 12:47:35,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-22 12:47:35,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-11-22 12:47:35,319 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 6 [2020-11-22 12:47:35,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:47:35,319 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-11-22 12:47:35,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:47:35,319 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-11-22 12:47:35,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 12:47:35,320 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:47:35,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:47:35,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 12:47:35,320 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 12:47:35,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:47:35,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1078916483, now seen corresponding path program 1 times [2020-11-22 12:47:35,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:47:35,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821991997] [2020-11-22 12:47:35,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:47:35,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:47:35,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:47:35,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821991997] [2020-11-22 12:47:35,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:47:35,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:47:35,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829469442] [2020-11-22 12:47:35,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:47:35,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:47:35,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:47:35,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:47:35,443 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 4 states. [2020-11-22 12:47:35,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:47:35,477 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2020-11-22 12:47:35,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:47:35,478 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-22 12:47:35,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:47:35,479 INFO L225 Difference]: With dead ends: 20 [2020-11-22 12:47:35,479 INFO L226 Difference]: Without dead ends: 19 [2020-11-22 12:47:35,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:47:35,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-22 12:47:35,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-22 12:47:35,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-22 12:47:35,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2020-11-22 12:47:35,484 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 7 [2020-11-22 12:47:35,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:47:35,484 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-11-22 12:47:35,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:47:35,484 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2020-11-22 12:47:35,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 12:47:35,485 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:47:35,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:47:35,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 12:47:35,486 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 12:47:35,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:47:35,486 INFO L82 PathProgramCache]: Analyzing trace with hash -620780291, now seen corresponding path program 1 times [2020-11-22 12:47:35,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:47:35,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74735037] [2020-11-22 12:47:35,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:47:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:47:35,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:47:35,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74735037] [2020-11-22 12:47:35,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:47:35,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:47:35,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172915364] [2020-11-22 12:47:35,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:47:35,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:47:35,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:47:35,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:47:35,559 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 4 states. [2020-11-22 12:47:35,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:47:35,601 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2020-11-22 12:47:35,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:47:35,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-22 12:47:35,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:47:35,603 INFO L225 Difference]: With dead ends: 27 [2020-11-22 12:47:35,603 INFO L226 Difference]: Without dead ends: 26 [2020-11-22 12:47:35,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:47:35,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-22 12:47:35,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 16. [2020-11-22 12:47:35,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-22 12:47:35,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2020-11-22 12:47:35,607 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 8 [2020-11-22 12:47:35,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:47:35,607 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2020-11-22 12:47:35,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:47:35,608 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2020-11-22 12:47:35,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 12:47:35,608 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:47:35,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:47:35,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 12:47:35,609 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 12:47:35,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:47:35,609 INFO L82 PathProgramCache]: Analyzing trace with hash -620774109, now seen corresponding path program 1 times [2020-11-22 12:47:35,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:47:35,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939129006] [2020-11-22 12:47:35,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:47:35,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:47:35,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:47:35,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939129006] [2020-11-22 12:47:35,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:47:35,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:47:35,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260480165] [2020-11-22 12:47:35,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:47:35,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:47:35,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:47:35,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:47:35,718 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2020-11-22 12:47:35,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:47:35,761 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2020-11-22 12:47:35,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:47:35,762 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-22 12:47:35,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:47:35,762 INFO L225 Difference]: With dead ends: 22 [2020-11-22 12:47:35,762 INFO L226 Difference]: Without dead ends: 21 [2020-11-22 12:47:35,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:47:35,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-11-22 12:47:35,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2020-11-22 12:47:35,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-22 12:47:35,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2020-11-22 12:47:35,766 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 8 [2020-11-22 12:47:35,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:47:35,766 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-11-22 12:47:35,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:47:35,766 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2020-11-22 12:47:35,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 12:47:35,767 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:47:35,767 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:47:35,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 12:47:35,767 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 12:47:35,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:47:35,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1751613633, now seen corresponding path program 1 times [2020-11-22 12:47:35,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:47:35,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006788311] [2020-11-22 12:47:35,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:47:35,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:47:35,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:47:35,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006788311] [2020-11-22 12:47:35,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876406994] [2020-11-22 12:47:35,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_07a93347-6d24-4c20-87ac-a4393b158d2c/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:47:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:47:35,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 12:47:35,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:47:36,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:47:36,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:47:36,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:47:36,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-11-22 12:47:36,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2, 2] total 6 [2020-11-22 12:47:36,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770031070] [2020-11-22 12:47:36,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:47:36,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:47:36,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:47:36,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-22 12:47:36,113 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand 4 states. [2020-11-22 12:47:36,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:47:36,162 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-11-22 12:47:36,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:47:36,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-22 12:47:36,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:47:36,164 INFO L225 Difference]: With dead ends: 25 [2020-11-22 12:47:36,164 INFO L226 Difference]: Without dead ends: 18 [2020-11-22 12:47:36,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-22 12:47:36,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-22 12:47:36,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-22 12:47:36,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-22 12:47:36,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-11-22 12:47:36,168 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 9 [2020-11-22 12:47:36,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:47:36,168 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-11-22 12:47:36,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:47:36,168 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-11-22 12:47:36,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 12:47:36,169 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:47:36,169 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:47:36,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-22 12:47:36,370 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 12:47:36,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:47:36,371 INFO L82 PathProgramCache]: Analyzing trace with hash 430602687, now seen corresponding path program 1 times [2020-11-22 12:47:36,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:47:36,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875788681] [2020-11-22 12:47:36,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:47:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:47:36,448 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:47:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:47:36,539 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:47:36,562 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 12:47:36,562 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 12:47:36,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-22 12:47:36,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:47:36 BoogieIcfgContainer [2020-11-22 12:47:36,585 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:47:36,586 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:47:36,587 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:47:36,588 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:47:36,588 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:47:34" (3/4) ... [2020-11-22 12:47:36,590 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 12:47:36,637 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_07a93347-6d24-4c20-87ac-a4393b158d2c/bin/utaipan/witness.graphml [2020-11-22 12:47:36,637 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:47:36,639 INFO L168 Benchmark]: Toolchain (without parser) took 3984.40 ms. Allocated memory was 94.4 MB in the beginning and 144.7 MB in the end (delta: 50.3 MB). Free memory was 57.7 MB in the beginning and 92.2 MB in the end (delta: -34.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:47:36,639 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 94.4 MB. Free memory was 74.1 MB in the beginning and 74.0 MB in the end (delta: 48.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:47:36,642 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.35 ms. Allocated memory is still 94.4 MB. Free memory was 57.5 MB in the beginning and 72.5 MB in the end (delta: -15.0 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-11-22 12:47:36,642 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.30 ms. Allocated memory is still 94.4 MB. Free memory was 72.5 MB in the beginning and 70.8 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:47:36,643 INFO L168 Benchmark]: Boogie Preprocessor took 36.25 ms. Allocated memory is still 94.4 MB. Free memory was 70.8 MB in the beginning and 69.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:47:36,643 INFO L168 Benchmark]: RCFGBuilder took 1617.47 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 69.3 MB in the beginning and 83.4 MB in the end (delta: -14.0 MB). Peak memory consumption was 44.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:47:36,644 INFO L168 Benchmark]: TraceAbstraction took 1927.03 ms. Allocated memory was 113.2 MB in the beginning and 144.7 MB in the end (delta: 31.5 MB). Free memory was 82.9 MB in the beginning and 93.3 MB in the end (delta: -10.4 MB). Peak memory consumption was 21.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:47:36,644 INFO L168 Benchmark]: Witness Printer took 51.18 ms. Allocated memory is still 144.7 MB. Free memory was 93.3 MB in the beginning and 92.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:47:36,647 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 94.4 MB. Free memory was 74.1 MB in the beginning and 74.0 MB in the end (delta: 48.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 307.35 ms. Allocated memory is still 94.4 MB. Free memory was 57.5 MB in the beginning and 72.5 MB in the end (delta: -15.0 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.30 ms. Allocated memory is still 94.4 MB. Free memory was 72.5 MB in the beginning and 70.8 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.25 ms. Allocated memory is still 94.4 MB. Free memory was 70.8 MB in the beginning and 69.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1617.47 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 69.3 MB in the beginning and 83.4 MB in the end (delta: -14.0 MB). Peak memory consumption was 44.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1927.03 ms. Allocated memory was 113.2 MB in the beginning and 144.7 MB in the end (delta: 31.5 MB). Free memory was 82.9 MB in the beginning and 93.3 MB in the end (delta: -10.4 MB). Peak memory consumption was 21.1 MB. Max. memory is 16.1 GB. * Witness Printer took 51.18 ms. Allocated memory is still 144.7 MB. Free memory was 93.3 MB in the beginning and 92.2 MB in the end (delta: 1.1 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: 81]: integer overflow possible integer overflow possible We found a FailurePath: [L53] int d = 1; [L54] int x = __VERIFIER_nondet_int(); [L56] COND TRUE __VERIFIER_nondet_int() [L57] EXPR d - 1 [L57] d = d - 1 [L61] COND FALSE !(__VERIFIER_nondet_int()) [L64] COND TRUE __VERIFIER_nondet_int() [L18] int y = __VERIFIER_nondet_int(); [L19] COND FALSE !(__VERIFIER_nondet_int()) [L34] COND TRUE __VERIFIER_nondet_int() [L35] COND FALSE !(__VERIFIER_nondet_int()) [L38] y = 5 [L48] return y; [L67] COND FALSE !(__VERIFIER_nondet_int()) [L70] COND FALSE !(__VERIFIER_nondet_int()) [L76] COND TRUE __VERIFIER_nondet_int() [L77] EXPR d - 1 [L77] d = d - 1 [L80] COND TRUE x > 0 [L81] x - d - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.8s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 52 SDtfs, 72 SDslu, 28 SDs, 0 SdLazy, 115 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 19 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 1976 SizeOfPredicates, 0 NumberOfNonLiveVariables, 35 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 2/6 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...