./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cstrspn-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed36b-f76d-4c0b-9b3f-92e0030fb0a1/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed36b-f76d-4c0b-9b3f-92e0030fb0a1/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed36b-f76d-4c0b-9b3f-92e0030fb0a1/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed36b-f76d-4c0b-9b3f-92e0030fb0a1/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cstrspn-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed36b-f76d-4c0b-9b3f-92e0030fb0a1/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed36b-f76d-4c0b-9b3f-92e0030fb0a1/bin/utaipan-I9t0OCRTmS --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 32bit --witnessprinter.graph.data.programhash e27d2e3e94b55a3b3138a7f2b03714931363cb725f69630c5958681cf34de99e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:59:46,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:59:46,125 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:59:46,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:59:46,161 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:59:46,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:59:46,168 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:59:46,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:59:46,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:59:46,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:59:46,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:59:46,189 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:59:46,190 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:59:46,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:59:46,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:59:46,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:59:46,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:59:46,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:59:46,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:59:46,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:59:46,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:59:46,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:59:46,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:59:46,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:59:46,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:59:46,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:59:46,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:59:46,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:59:46,226 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:59:46,227 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:59:46,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:59:46,229 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:59:46,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:59:46,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:59:46,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:59:46,235 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:59:46,236 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:59:46,236 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:59:46,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:59:46,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:59:46,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:59:46,239 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed36b-f76d-4c0b-9b3f-92e0030fb0a1/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-19 07:59:46,278 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:59:46,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:59:46,279 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:59:46,279 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:59:46,280 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:59:46,281 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:59:46,281 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:59:46,281 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:59:46,281 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:59:46,282 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:59:46,283 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:59:46,283 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:59:46,283 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:59:46,284 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:59:46,284 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:59:46,284 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:59:46,284 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:59:46,285 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:59:46,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:59:46,286 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:59:46,286 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 07:59:46,286 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:59:46,286 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:59:46,288 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:59:46,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:59:46,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:59:46,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:59:46,289 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-19 07:59:46,289 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:59:46,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:59:46,290 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:59:46,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:59:46,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:59:46,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:59:46,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:59:46,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:59:46,291 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:59:46,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:59:46,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:59:46,292 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:59:46,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:59:46,293 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:59:46,293 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:59:46,293 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed36b-f76d-4c0b-9b3f-92e0030fb0a1/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed36b-f76d-4c0b-9b3f-92e0030fb0a1/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e27d2e3e94b55a3b3138a7f2b03714931363cb725f69630c5958681cf34de99e [2022-11-19 07:59:46,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:59:46,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:59:46,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:59:46,628 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:59:46,629 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:59:46,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed36b-f76d-4c0b-9b3f-92e0030fb0a1/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/array-memsafety/openbsd_cstrspn-alloca-2.i [2022-11-19 07:59:46,692 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed36b-f76d-4c0b-9b3f-92e0030fb0a1/bin/utaipan-I9t0OCRTmS/data/0978b85cb/21864189af8a45508acf4736c50cfb4f/FLAG9a71c8744 [2022-11-19 07:59:47,305 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:59:47,305 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed36b-f76d-4c0b-9b3f-92e0030fb0a1/sv-benchmarks/c/array-memsafety/openbsd_cstrspn-alloca-2.i [2022-11-19 07:59:47,316 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed36b-f76d-4c0b-9b3f-92e0030fb0a1/bin/utaipan-I9t0OCRTmS/data/0978b85cb/21864189af8a45508acf4736c50cfb4f/FLAG9a71c8744 [2022-11-19 07:59:47,591 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed36b-f76d-4c0b-9b3f-92e0030fb0a1/bin/utaipan-I9t0OCRTmS/data/0978b85cb/21864189af8a45508acf4736c50cfb4f [2022-11-19 07:59:47,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:59:47,597 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:59:47,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:59:47,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:59:47,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:59:47,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:47" (1/1) ... [2022-11-19 07:59:47,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3286e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:47, skipping insertion in model container [2022-11-19 07:59:47,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:47" (1/1) ... [2022-11-19 07:59:47,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:59:47,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:59:47,973 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:59:47,980 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:59:48,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:59:48,091 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:59:48,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:48 WrapperNode [2022-11-19 07:59:48,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:59:48,093 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:59:48,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:59:48,093 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:59:48,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:48" (1/1) ... [2022-11-19 07:59:48,112 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:48" (1/1) ... [2022-11-19 07:59:48,133 INFO L138 Inliner]: procedures = 117, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 97 [2022-11-19 07:59:48,134 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:59:48,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:59:48,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:59:48,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:59:48,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:48" (1/1) ... [2022-11-19 07:59:48,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:48" (1/1) ... [2022-11-19 07:59:48,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:48" (1/1) ... [2022-11-19 07:59:48,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:48" (1/1) ... [2022-11-19 07:59:48,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:48" (1/1) ... [2022-11-19 07:59:48,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:48" (1/1) ... [2022-11-19 07:59:48,157 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:48" (1/1) ... [2022-11-19 07:59:48,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:48" (1/1) ... [2022-11-19 07:59:48,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:59:48,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:59:48,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:59:48,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:59:48,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:48" (1/1) ... [2022-11-19 07:59:48,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:59:48,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed36b-f76d-4c0b-9b3f-92e0030fb0a1/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:59:48,197 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed36b-f76d-4c0b-9b3f-92e0030fb0a1/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:59:48,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed36b-f76d-4c0b-9b3f-92e0030fb0a1/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:59:48,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:59:48,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:59:48,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:59:48,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:59:48,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:59:48,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:59:48,402 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:59:48,404 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:59:48,625 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:59:48,745 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:59:48,758 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-19 07:59:48,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:48 BoogieIcfgContainer [2022-11-19 07:59:48,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:59:48,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:59:48,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:59:48,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:59:48,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:59:47" (1/3) ... [2022-11-19 07:59:48,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee87e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:48, skipping insertion in model container [2022-11-19 07:59:48,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:48" (2/3) ... [2022-11-19 07:59:48,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee87e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:48, skipping insertion in model container [2022-11-19 07:59:48,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:48" (3/3) ... [2022-11-19 07:59:48,771 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrspn-alloca-2.i [2022-11-19 07:59:48,810 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:59:48,812 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-19 07:59:48,911 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:59:48,919 INFO L357 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, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@577d09ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:59:48,920 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-19 07:59:48,924 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 33 states have internal predecessors, (40), 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) [2022-11-19 07:59:48,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-19 07:59:48,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:48,932 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-19 07:59:48,933 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-19 07:59:48,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:48,941 INFO L85 PathProgramCache]: Analyzing trace with hash 4173, now seen corresponding path program 1 times [2022-11-19 07:59:48,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:48,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651327867] [2022-11-19 07:59:48,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:48,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:49,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:59:49,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:49,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651327867] [2022-11-19 07:59:49,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651327867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:59:49,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:59:49,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 07:59:49,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174119706] [2022-11-19 07:59:49,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:59:49,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:59:49,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:49,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:59:49,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:59:49,274 INFO L87 Difference]: Start difference. First operand has 34 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 33 states have internal predecessors, (40), 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) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-19 07:59:49,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:59:49,362 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2022-11-19 07:59:49,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:59:49,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) Word has length 2 [2022-11-19 07:59:49,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:59:49,373 INFO L225 Difference]: With dead ends: 57 [2022-11-19 07:59:49,373 INFO L226 Difference]: Without dead ends: 26 [2022-11-19 07:59:49,376 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:59:49,379 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:59:49,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 24 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:59:49,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-19 07:59:49,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-19 07:59:49,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.6875) internal successors, (27), 25 states have internal predecessors, (27), 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) [2022-11-19 07:59:49,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2022-11-19 07:59:49,419 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 2 [2022-11-19 07:59:49,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:59:49,420 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2022-11-19 07:59:49,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-19 07:59:49,422 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2022-11-19 07:59:49,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 07:59:49,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:49,423 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 07:59:49,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:59:49,424 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-19 07:59:49,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:49,425 INFO L85 PathProgramCache]: Analyzing trace with hash 129415, now seen corresponding path program 1 times [2022-11-19 07:59:49,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:49,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385059059] [2022-11-19 07:59:49,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:49,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:49,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:49,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:59:49,518 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:49,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385059059] [2022-11-19 07:59:49,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385059059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:59:49,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:59:49,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 07:59:49,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913912894] [2022-11-19 07:59:49,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:59:49,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:59:49,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:49,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:59:49,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:59:49,522 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-19 07:59:49,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:59:49,543 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2022-11-19 07:59:49,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:59:49,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) Word has length 3 [2022-11-19 07:59:49,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:59:49,544 INFO L225 Difference]: With dead ends: 26 [2022-11-19 07:59:49,544 INFO L226 Difference]: Without dead ends: 24 [2022-11-19 07:59:49,545 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:59:49,546 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:59:49,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 17 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:59:49,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-19 07:59:49,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-19 07:59:49,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.5625) internal successors, (25), 23 states have internal predecessors, (25), 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) [2022-11-19 07:59:49,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2022-11-19 07:59:49,552 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 3 [2022-11-19 07:59:49,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:59:49,552 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2022-11-19 07:59:49,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-19 07:59:49,553 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2022-11-19 07:59:49,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 07:59:49,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:49,553 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 07:59:49,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:59:49,554 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-19 07:59:49,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:49,555 INFO L85 PathProgramCache]: Analyzing trace with hash 124371751, now seen corresponding path program 1 times [2022-11-19 07:59:49,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:49,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138895372] [2022-11-19 07:59:49,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:49,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:49,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:49,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:59:49,689 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:49,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138895372] [2022-11-19 07:59:49,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138895372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:59:49,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:59:49,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:59:49,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384607392] [2022-11-19 07:59:49,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:59:49,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:59:49,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:49,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:59:49,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:59:49,693 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-19 07:59:49,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:59:49,760 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2022-11-19 07:59:49,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:59:49,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) Word has length 5 [2022-11-19 07:59:49,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:59:49,765 INFO L225 Difference]: With dead ends: 47 [2022-11-19 07:59:49,766 INFO L226 Difference]: Without dead ends: 45 [2022-11-19 07:59:49,766 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:59:49,768 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 20 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:59:49,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 56 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:59:49,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-19 07:59:49,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 29. [2022-11-19 07:59:49,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 28 states have internal predecessors, (31), 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) [2022-11-19 07:59:49,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2022-11-19 07:59:49,785 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 5 [2022-11-19 07:59:49,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:59:49,785 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2022-11-19 07:59:49,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-19 07:59:49,786 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2022-11-19 07:59:49,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 07:59:49,788 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:49,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 07:59:49,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:59:49,789 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-19 07:59:49,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:49,791 INFO L85 PathProgramCache]: Analyzing trace with hash -439510027, now seen corresponding path program 1 times [2022-11-19 07:59:49,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:49,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451979089] [2022-11-19 07:59:49,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:49,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:49,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:49,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:59:49,923 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:49,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451979089] [2022-11-19 07:59:49,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451979089] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:59:49,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:59:49,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 07:59:49,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673257662] [2022-11-19 07:59:49,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:59:49,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:59:49,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:49,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:59:49,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:59:49,926 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-11-19 07:59:49,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:59:49,946 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2022-11-19 07:59:49,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:59:49,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) Word has length 6 [2022-11-19 07:59:49,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:59:49,947 INFO L225 Difference]: With dead ends: 29 [2022-11-19 07:59:49,947 INFO L226 Difference]: Without dead ends: 27 [2022-11-19 07:59:49,948 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:59:49,949 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:59:49,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 14 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:59:49,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-19 07:59:49,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-19 07:59:49,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 21 states have (on average 1.380952380952381) internal successors, (29), 26 states have internal predecessors, (29), 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) [2022-11-19 07:59:49,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2022-11-19 07:59:49,954 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 6 [2022-11-19 07:59:49,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:59:49,955 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2022-11-19 07:59:49,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-11-19 07:59:49,955 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2022-11-19 07:59:49,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 07:59:49,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:49,956 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:59:49,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:59:49,956 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-19 07:59:49,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:49,957 INFO L85 PathProgramCache]: Analyzing trace with hash -739908875, now seen corresponding path program 1 times [2022-11-19 07:59:49,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:49,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999574070] [2022-11-19 07:59:49,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:49,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:50,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:59:50,035 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:50,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999574070] [2022-11-19 07:59:50,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999574070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:59:50,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:59:50,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 07:59:50,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618248852] [2022-11-19 07:59:50,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:59:50,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:59:50,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:50,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:59:50,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:59:50,040 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2022-11-19 07:59:50,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:59:50,056 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2022-11-19 07:59:50,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:59:50,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) Word has length 7 [2022-11-19 07:59:50,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:59:50,058 INFO L225 Difference]: With dead ends: 27 [2022-11-19 07:59:50,058 INFO L226 Difference]: Without dead ends: 21 [2022-11-19 07:59:50,058 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:59:50,060 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:59:50,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 14 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:59:50,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-19 07:59:50,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-19 07:59:50,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 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) [2022-11-19 07:59:50,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2022-11-19 07:59:50,065 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 7 [2022-11-19 07:59:50,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:59:50,065 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-11-19 07:59:50,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2022-11-19 07:59:50,066 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-11-19 07:59:50,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 07:59:50,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:50,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:59:50,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:59:50,067 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-19 07:59:50,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:50,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1912146281, now seen corresponding path program 1 times [2022-11-19 07:59:50,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:50,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491390988] [2022-11-19 07:59:50,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:50,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:50,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:59:50,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:50,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491390988] [2022-11-19 07:59:50,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491390988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:59:50,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:59:50,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:59:50,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623633458] [2022-11-19 07:59:50,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:59:50,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:59:50,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:50,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:59:50,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:59:50,174 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-11-19 07:59:50,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:59:50,230 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2022-11-19 07:59:50,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:59:50,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) Word has length 9 [2022-11-19 07:59:50,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:59:50,231 INFO L225 Difference]: With dead ends: 28 [2022-11-19 07:59:50,231 INFO L226 Difference]: Without dead ends: 26 [2022-11-19 07:59:50,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:59:50,237 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:59:50,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 34 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:59:50,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-19 07:59:50,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-19 07:59:50,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 25 states have internal predecessors, (28), 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) [2022-11-19 07:59:50,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2022-11-19 07:59:50,243 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 9 [2022-11-19 07:59:50,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:59:50,243 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2022-11-19 07:59:50,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-11-19 07:59:50,243 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2022-11-19 07:59:50,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 07:59:50,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:50,245 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2022-11-19 07:59:50,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:59:50,246 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-19 07:59:50,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:50,246 INFO L85 PathProgramCache]: Analyzing trace with hash 961835802, now seen corresponding path program 1 times [2022-11-19 07:59:50,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:50,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322250328] [2022-11-19 07:59:50,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:50,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:50,339 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:59:50,339 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:50,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322250328] [2022-11-19 07:59:50,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322250328] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:59:50,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978800410] [2022-11-19 07:59:50,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:50,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:59:50,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed36b-f76d-4c0b-9b3f-92e0030fb0a1/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:59:50,344 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed36b-f76d-4c0b-9b3f-92e0030fb0a1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:59:50,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed36b-f76d-4c0b-9b3f-92e0030fb0a1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:59:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:50,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:59:50,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:59:50,493 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:59:50,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:59:50,545 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:59:50,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978800410] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:59:50,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1020081322] [2022-11-19 07:59:50,569 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-19 07:59:50,569 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:59:50,573 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:59:50,579 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:59:50,580 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:59:50,682 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-19 07:59:50,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 19 [2022-11-19 07:59:50,750 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-19 07:59:50,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 29 [2022-11-19 07:59:50,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:59:51,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:59:51,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:59:51,121 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:59:51,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1020081322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:59:51,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:59:51,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 12 [2022-11-19 07:59:51,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490453215] [2022-11-19 07:59:51,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:59:51,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:59:51,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:51,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:59:51,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-19 07:59:51,326 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2022-11-19 07:59:51,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:59:51,363 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2022-11-19 07:59:51,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:59:51,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) Word has length 10 [2022-11-19 07:59:51,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:59:51,365 INFO L225 Difference]: With dead ends: 26 [2022-11-19 07:59:51,365 INFO L226 Difference]: Without dead ends: 24 [2022-11-19 07:59:51,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-19 07:59:51,366 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 11 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:59:51,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 10 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:59:51,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-19 07:59:51,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2022-11-19 07:59:51,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 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) [2022-11-19 07:59:51,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-11-19 07:59:51,372 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 10 [2022-11-19 07:59:51,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:59:51,372 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-11-19 07:59:51,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2022-11-19 07:59:51,373 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-11-19 07:59:51,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 07:59:51,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:51,373 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:59:51,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed36b-f76d-4c0b-9b3f-92e0030fb0a1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:59:51,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed36b-f76d-4c0b-9b3f-92e0030fb0a1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-19 07:59:51,583 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-19 07:59:51,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:51,583 INFO L85 PathProgramCache]: Analyzing trace with hash -180281790, now seen corresponding path program 1 times [2022-11-19 07:59:51,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:51,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284366352] [2022-11-19 07:59:51,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:51,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:51,671 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:59:51,671 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:51,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284366352] [2022-11-19 07:59:51,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284366352] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:59:51,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766219795] [2022-11-19 07:59:51,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:51,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:59:51,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed36b-f76d-4c0b-9b3f-92e0030fb0a1/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:59:51,673 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed36b-f76d-4c0b-9b3f-92e0030fb0a1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:59:51,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed36b-f76d-4c0b-9b3f-92e0030fb0a1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:59:51,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:51,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:59:51,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:59:51,789 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:59:51,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:59:51,863 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:59:51,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766219795] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:59:51,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1927429911] [2022-11-19 07:59:51,867 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-19 07:59:51,867 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:59:51,867 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:59:51,868 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:59:51,868 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:59:51,967 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-19 07:59:51,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 29 [2022-11-19 07:59:51,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-19 07:59:52,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:59:52,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:59:52,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:59:52,337 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:59:53,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1927429911] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:59:53,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:59:53,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5, 5] total 16 [2022-11-19 07:59:53,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599790161] [2022-11-19 07:59:53,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:59:53,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:59:53,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:53,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:59:53,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-11-19 07:59:53,209 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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) [2022-11-19 07:59:53,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:59:53,851 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2022-11-19 07:59:53,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:59:53,853 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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) Word has length 14 [2022-11-19 07:59:53,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:59:53,853 INFO L225 Difference]: With dead ends: 37 [2022-11-19 07:59:53,853 INFO L226 Difference]: Without dead ends: 24 [2022-11-19 07:59:53,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-11-19 07:59:53,854 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 13 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:59:53,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 25 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:59:53,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-19 07:59:53,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2022-11-19 07:59:53,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 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) [2022-11-19 07:59:53,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2022-11-19 07:59:53,864 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 14 [2022-11-19 07:59:53,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:59:53,864 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-11-19 07:59:53,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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) [2022-11-19 07:59:53,866 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-11-19 07:59:53,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 07:59:53,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:53,867 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:59:53,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed36b-f76d-4c0b-9b3f-92e0030fb0a1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-19 07:59:54,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed36b-f76d-4c0b-9b3f-92e0030fb0a1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-19 07:59:54,072 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-19 07:59:54,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:54,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1621209007, now seen corresponding path program 1 times [2022-11-19 07:59:54,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:54,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256381782] [2022-11-19 07:59:54,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:54,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:54,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:54,153 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 07:59:54,153 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:54,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256381782] [2022-11-19 07:59:54,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256381782] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:59:54,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339405988] [2022-11-19 07:59:54,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:54,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:59:54,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed36b-f76d-4c0b-9b3f-92e0030fb0a1/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:59:54,155 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed36b-f76d-4c0b-9b3f-92e0030fb0a1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:59:54,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed36b-f76d-4c0b-9b3f-92e0030fb0a1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:59:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:54,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:59:54,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:59:54,263 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 07:59:54,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:59:54,312 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 07:59:54,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339405988] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:59:54,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [312201048] [2022-11-19 07:59:54,315 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 07:59:54,316 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:59:54,316 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:59:54,316 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:59:54,316 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:59:54,366 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-19 07:59:54,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 19 [2022-11-19 07:59:54,403 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-19 07:59:54,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 29 [2022-11-19 07:59:54,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:59:54,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:59:54,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:59:54,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:59:54,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:59:54,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:59:54,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:59:54,942 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:59:55,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [312201048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:59:55,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:59:55,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 5, 5] total 17 [2022-11-19 07:59:55,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939152534] [2022-11-19 07:59:55,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:59:55,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:59:55,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:55,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:59:55,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-11-19 07:59:55,648 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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) [2022-11-19 07:59:55,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:59:55,930 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2022-11-19 07:59:55,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:59:55,931 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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) Word has length 19 [2022-11-19 07:59:55,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:59:55,931 INFO L225 Difference]: With dead ends: 22 [2022-11-19 07:59:55,931 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 07:59:55,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-11-19 07:59:55,932 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 19 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:59:55,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 2 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:59:55,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 07:59:55,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 07:59:55,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-11-19 07:59:55,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 07:59:55,934 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2022-11-19 07:59:55,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:59:55,934 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 07:59:55,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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) [2022-11-19 07:59:55,934 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 07:59:55,934 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 07:59:55,936 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2022-11-19 07:59:55,937 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2022-11-19 07:59:55,937 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2022-11-19 07:59:55,937 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2022-11-19 07:59:55,938 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2022-11-19 07:59:55,938 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2022-11-19 07:59:55,938 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2022-11-19 07:59:55,938 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2022-11-19 07:59:55,939 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2022-11-19 07:59:55,939 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2022-11-19 07:59:55,939 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2022-11-19 07:59:55,939 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2022-11-19 07:59:55,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed36b-f76d-4c0b-9b3f-92e0030fb0a1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:59:56,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed36b-f76d-4c0b-9b3f-92e0030fb0a1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:59:56,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-19 07:59:56,548 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 537) no Hoare annotation was computed. [2022-11-19 07:59:56,548 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW(line 546) no Hoare annotation was computed. [2022-11-19 07:59:56,549 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 541) no Hoare annotation was computed. [2022-11-19 07:59:56,549 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 537) no Hoare annotation was computed. [2022-11-19 07:59:56,549 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-19 07:59:56,549 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 541) no Hoare annotation was computed. [2022-11-19 07:59:56,549 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW(line 545) no Hoare annotation was computed. [2022-11-19 07:59:56,549 INFO L899 garLoopResultBuilder]: For program point L520-1(lines 520 522) no Hoare annotation was computed. [2022-11-19 07:59:56,550 INFO L895 garLoopResultBuilder]: At program point L520-3(lines 520 522) the Hoare annotation is: (<= |ULTIMATE.start_main_~length1~0#1| 2147483647) [2022-11-19 07:59:56,550 INFO L895 garLoopResultBuilder]: At program point L520-4(lines 520 522) the Hoare annotation is: (<= |ULTIMATE.start_main_~length1~0#1| 2147483647) [2022-11-19 07:59:56,550 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 537) no Hoare annotation was computed. [2022-11-19 07:59:56,550 INFO L899 garLoopResultBuilder]: For program point L545(line 545) no Hoare annotation was computed. [2022-11-19 07:59:56,550 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-19 07:59:56,550 INFO L899 garLoopResultBuilder]: For program point L541-1(line 541) no Hoare annotation was computed. [2022-11-19 07:59:56,550 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 541) no Hoare annotation was computed. [2022-11-19 07:59:56,551 INFO L899 garLoopResultBuilder]: For program point L541-2(lines 541 544) no Hoare annotation was computed. [2022-11-19 07:59:56,551 INFO L899 garLoopResultBuilder]: For program point L537-1(line 537) no Hoare annotation was computed. [2022-11-19 07:59:56,551 INFO L899 garLoopResultBuilder]: For program point L541-5(line 541) no Hoare annotation was computed. [2022-11-19 07:59:56,551 INFO L899 garLoopResultBuilder]: For program point L537-2(lines 537 540) no Hoare annotation was computed. [2022-11-19 07:59:56,551 INFO L899 garLoopResultBuilder]: For program point L541-6(line 541) no Hoare annotation was computed. [2022-11-19 07:59:56,552 INFO L895 garLoopResultBuilder]: At program point L541-7(lines 541 544) the Hoare annotation is: (and (= |ULTIMATE.start_main_#t~malloc8#1.offset| 0) (<= 0 |ULTIMATE.start_main_~nondetString2~0#1.offset|) (<= |ULTIMATE.start_main_~nondetString2~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~i~1#1|) (<= 0 |ULTIMATE.start_main_~nondetString1~0#1.offset|) (<= 1 |ULTIMATE.start_main_~length1~0#1|) (<= 0 |ULTIMATE.start_main_#t~malloc8#1.base|) (= |ULTIMATE.start_main_#t~malloc9#1.offset| 0) (<= |ULTIMATE.start_main_~i~1#1| 2147483647) (<= 0 |ULTIMATE.start_main_~nondetString1~0#1.base|) (<= 1 |ULTIMATE.start_main_~length2~0#1|) (<= |ULTIMATE.start_main_~length1~0#1| 2147483647) (not (< (+ |ULTIMATE.start_main_~i~0#1| 1) |ULTIMATE.start_main_~length1~0#1|)) (<= |ULTIMATE.start_main_~nondetString1~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_#t~malloc9#1.base|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~length2~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~nondetString2~0#1.base|) (= |#NULL.base| 0)) [2022-11-19 07:59:56,552 INFO L899 garLoopResultBuilder]: For program point L541-8(lines 541 544) no Hoare annotation was computed. [2022-11-19 07:59:56,552 INFO L899 garLoopResultBuilder]: For program point L537-5(line 537) no Hoare annotation was computed. [2022-11-19 07:59:56,552 INFO L899 garLoopResultBuilder]: For program point L537-6(line 537) no Hoare annotation was computed. [2022-11-19 07:59:56,552 INFO L895 garLoopResultBuilder]: At program point L537-7(lines 537 540) the Hoare annotation is: (and (= |ULTIMATE.start_main_#t~malloc8#1.offset| 0) (<= 0 |ULTIMATE.start_main_~nondetString2~0#1.offset|) (<= |ULTIMATE.start_main_~nondetString2~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~nondetString1~0#1.offset|) (<= 1 |ULTIMATE.start_main_~length1~0#1|) (<= 0 |ULTIMATE.start_main_#t~malloc8#1.base|) (= |ULTIMATE.start_main_#t~malloc9#1.offset| 0) (<= 0 |ULTIMATE.start_main_~nondetString1~0#1.base|) (<= 1 |ULTIMATE.start_main_~length2~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~length1~0#1| 2147483647) (<= |ULTIMATE.start_main_~nondetString1~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_#t~malloc9#1.base|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~length2~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~nondetString2~0#1.base|) (= |#NULL.base| 0)) [2022-11-19 07:59:56,552 INFO L899 garLoopResultBuilder]: For program point L537-8(lines 537 540) no Hoare annotation was computed. [2022-11-19 07:59:56,553 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW(line 545) no Hoare annotation was computed. [2022-11-19 07:59:56,553 INFO L899 garLoopResultBuilder]: For program point L521(lines 521 522) no Hoare annotation was computed. [2022-11-19 07:59:56,553 INFO L899 garLoopResultBuilder]: For program point L546(line 546) no Hoare annotation was computed. [2022-11-19 07:59:56,553 INFO L899 garLoopResultBuilder]: For program point L546-1(line 546) no Hoare annotation was computed. [2022-11-19 07:59:56,553 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 537) no Hoare annotation was computed. [2022-11-19 07:59:56,553 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW(line 546) no Hoare annotation was computed. [2022-11-19 07:59:56,554 INFO L895 garLoopResultBuilder]: At program point L522(lines 515 524) the Hoare annotation is: (<= |ULTIMATE.start_main_~length1~0#1| 2147483647) [2022-11-19 07:59:56,554 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 541) no Hoare annotation was computed. [2022-11-19 07:59:56,557 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:59:56,560 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:59:56,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:59:56 BoogieIcfgContainer [2022-11-19 07:59:56,592 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:59:56,593 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:59:56,593 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:59:56,593 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:59:56,594 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:48" (3/4) ... [2022-11-19 07:59:56,597 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 07:59:56,609 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-19 07:59:56,609 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-19 07:59:56,609 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-19 07:59:56,610 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 07:59:56,660 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed36b-f76d-4c0b-9b3f-92e0030fb0a1/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 07:59:56,661 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:59:56,661 INFO L158 Benchmark]: Toolchain (without parser) took 9064.03ms. Allocated memory was 100.7MB in the beginning and 213.9MB in the end (delta: 113.2MB). Free memory was 69.3MB in the beginning and 158.3MB in the end (delta: -89.0MB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. [2022-11-19 07:59:56,662 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 100.7MB. Free memory is still 56.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:59:56,662 INFO L158 Benchmark]: CACSL2BoogieTranslator took 491.17ms. Allocated memory is still 100.7MB. Free memory was 69.0MB in the beginning and 69.6MB in the end (delta: -603.1kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 07:59:56,664 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.97ms. Allocated memory is still 100.7MB. Free memory was 69.6MB in the beginning and 67.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:59:56,668 INFO L158 Benchmark]: Boogie Preprocessor took 29.08ms. Allocated memory is still 100.7MB. Free memory was 67.6MB in the beginning and 66.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:59:56,668 INFO L158 Benchmark]: RCFGBuilder took 597.25ms. Allocated memory is still 100.7MB. Free memory was 65.9MB in the beginning and 49.8MB in the end (delta: 16.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-19 07:59:56,669 INFO L158 Benchmark]: TraceAbstraction took 7828.61ms. Allocated memory was 100.7MB in the beginning and 213.9MB in the end (delta: 113.2MB). Free memory was 49.1MB in the beginning and 161.4MB in the end (delta: -112.3MB). Peak memory consumption was 77.8MB. Max. memory is 16.1GB. [2022-11-19 07:59:56,670 INFO L158 Benchmark]: Witness Printer took 68.03ms. Allocated memory is still 213.9MB. Free memory was 161.4MB in the beginning and 158.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 07:59:56,672 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 100.7MB. Free memory is still 56.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 491.17ms. Allocated memory is still 100.7MB. Free memory was 69.0MB in the beginning and 69.6MB in the end (delta: -603.1kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.97ms. Allocated memory is still 100.7MB. Free memory was 69.6MB in the beginning and 67.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.08ms. Allocated memory is still 100.7MB. Free memory was 67.6MB in the beginning and 66.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 597.25ms. Allocated memory is still 100.7MB. Free memory was 65.9MB in the beginning and 49.8MB in the end (delta: 16.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 7828.61ms. Allocated memory was 100.7MB in the beginning and 213.9MB in the end (delta: 113.2MB). Free memory was 49.1MB in the beginning and 161.4MB in the end (delta: -112.3MB). Peak memory consumption was 77.8MB. Max. memory is 16.1GB. * Witness Printer took 68.03ms. Allocated memory is still 213.9MB. Free memory was 161.4MB in the beginning and 158.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 537]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 537]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 537]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 537]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 541]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 541]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 541]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 541]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 545]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 545]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 546]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 546]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 7.7s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 156 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 156 mSDsluCounter, 196 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 85 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 186 IncrementalHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 111 mSDtfsCounter, 186 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 152 GetRequests, 84 SyntacticMatches, 11 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 23 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 13 NumberOfFragments, 128 HoareAnnotationTreeSize, 5 FomulaSimplifications, 33 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 705 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 146 ConstructedInterpolants, 0 QuantifiedInterpolants, 352 SizeOfPredicates, 6 NumberOfNonLiveVariables, 253 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 9/45 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: OVERALL_TIME: 1.7s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 3, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 28, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 77, TOOLS_POST_TIME: 1.3s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 77, TOOLS_QUANTIFIERELIM_TIME: 1.3s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.2s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 133, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 4, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 5, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 9, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 28, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 4, LOOP_SUMMARIZER_CACHE_MISSES: 4, LOOP_SUMMARIZER_OVERALL_TIME: 0.8s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.8s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 9, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 290, DAG_COMPRESSION_RETAINED_NODES: 103, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold - InvariantResult [Line: 541]: Loop Invariant Derived loop invariant: ((((((((((((((((((__builtin_alloca (length1 * sizeof(char)) == 0 && 0 <= nondetString2) && nondetString2 <= 0) && 0 <= i) && 0 <= nondetString1) && 1 <= length1) && 0 <= __builtin_alloca (length1 * sizeof(char))) && __builtin_alloca (length2 * sizeof(char)) == 0) && i <= 2147483647) && 0 <= nondetString1) && 1 <= length2) && length1 <= 2147483647) && !(i + 1 < length1)) && nondetString1 <= 0) && #NULL == 0) && 0 <= __builtin_alloca (length2 * sizeof(char))) && 0 <= unknown-#StackHeapBarrier-unknown) && length2 <= 2147483647) && 0 <= nondetString2) && #NULL == 0 - InvariantResult [Line: 520]: Loop Invariant Derived loop invariant: length1 <= 2147483647 - InvariantResult [Line: 520]: Loop Invariant Derived loop invariant: length1 <= 2147483647 - InvariantResult [Line: 515]: Loop Invariant Derived loop invariant: length1 <= 2147483647 - InvariantResult [Line: 537]: Loop Invariant Derived loop invariant: ((((((((((((((((__builtin_alloca (length1 * sizeof(char)) == 0 && 0 <= nondetString2) && nondetString2 <= 0) && 0 <= nondetString1) && 1 <= length1) && 0 <= __builtin_alloca (length1 * sizeof(char))) && __builtin_alloca (length2 * sizeof(char)) == 0) && 0 <= nondetString1) && 1 <= length2) && 0 <= i) && length1 <= 2147483647) && nondetString1 <= 0) && #NULL == 0) && 0 <= __builtin_alloca (length2 * sizeof(char))) && 0 <= unknown-#StackHeapBarrier-unknown) && length2 <= 2147483647) && 0 <= nondetString2) && #NULL == 0 RESULT: Ultimate proved your program to be correct! [2022-11-19 07:59:56,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed36b-f76d-4c0b-9b3f-92e0030fb0a1/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE