./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-crafted/bAnd2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-crafted/bAnd2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0 --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 a719405da03132817ea2d2d0b1cf4a57bb1050c6860d4dd23b83fe81ff2289e3 --- 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-e04fb08 [2022-11-16 15:54:19,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 15:54:19,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 15:54:19,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 15:54:19,215 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 15:54:19,219 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 15:54:19,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 15:54:19,227 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 15:54:19,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 15:54:19,234 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 15:54:19,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 15:54:19,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 15:54:19,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 15:54:19,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 15:54:19,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 15:54:19,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 15:54:19,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 15:54:19,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 15:54:19,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 15:54:19,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 15:54:19,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 15:54:19,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 15:54:19,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 15:54:19,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 15:54:19,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 15:54:19,271 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 15:54:19,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 15:54:19,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 15:54:19,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 15:54:19,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 15:54:19,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 15:54:19,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 15:54:19,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 15:54:19,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 15:54:19,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 15:54:19,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 15:54:19,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 15:54:19,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 15:54:19,278 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 15:54:19,279 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 15:54:19,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 15:54:19,284 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-16 15:54:19,328 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 15:54:19,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 15:54:19,329 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 15:54:19,329 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 15:54:19,330 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 15:54:19,331 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 15:54:19,331 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 15:54:19,331 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 15:54:19,331 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 15:54:19,331 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 15:54:19,332 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 15:54:19,333 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 15:54:19,333 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 15:54:19,333 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 15:54:19,333 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 15:54:19,334 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 15:54:19,334 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 15:54:19,334 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 15:54:19,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 15:54:19,335 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 15:54:19,335 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 15:54:19,335 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 15:54:19,336 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 15:54:19,336 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 15:54:19,336 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 15:54:19,336 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 15:54:19,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 15:54:19,336 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 15:54:19,337 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 15:54:19,337 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 15:54:19,338 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 15:54:19,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 15:54:19,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 15:54:19,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 15:54:19,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 15:54:19,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 15:54:19,340 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 15:54:19,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 15:54:19,340 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 15:54:19,340 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 15:54:19,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 15:54:19,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 15:54:19,341 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 15:54:19,341 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_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a719405da03132817ea2d2d0b1cf4a57bb1050c6860d4dd23b83fe81ff2289e3 [2022-11-16 15:54:19,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 15:54:19,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 15:54:19,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 15:54:19,637 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 15:54:19,638 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 15:54:19,639 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/array-crafted/bAnd2.i [2022-11-16 15:54:19,706 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/data/6ed22911d/b7ba7cddce0047b89ae35c46ba72f874/FLAGfcaf94bd5 [2022-11-16 15:54:20,260 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 15:54:20,260 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/sv-benchmarks/c/array-crafted/bAnd2.i [2022-11-16 15:54:20,267 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/data/6ed22911d/b7ba7cddce0047b89ae35c46ba72f874/FLAGfcaf94bd5 [2022-11-16 15:54:20,643 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/data/6ed22911d/b7ba7cddce0047b89ae35c46ba72f874 [2022-11-16 15:54:20,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 15:54:20,648 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 15:54:20,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 15:54:20,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 15:54:20,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 15:54:20,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:54:20" (1/1) ... [2022-11-16 15:54:20,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6031313a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:54:20, skipping insertion in model container [2022-11-16 15:54:20,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:54:20" (1/1) ... [2022-11-16 15:54:20,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 15:54:20,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 15:54:20,898 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/sv-benchmarks/c/array-crafted/bAnd2.i[1296,1309] [2022-11-16 15:54:20,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 15:54:20,907 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 15:54:20,932 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/sv-benchmarks/c/array-crafted/bAnd2.i[1296,1309] [2022-11-16 15:54:20,934 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 15:54:20,950 INFO L208 MainTranslator]: Completed translation [2022-11-16 15:54:20,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:54:20 WrapperNode [2022-11-16 15:54:20,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 15:54:20,953 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 15:54:20,953 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 15:54:20,953 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 15:54:20,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:54:20" (1/1) ... [2022-11-16 15:54:20,969 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:54:20" (1/1) ... [2022-11-16 15:54:20,999 INFO L138 Inliner]: procedures = 16, calls = 31, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2022-11-16 15:54:21,003 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 15:54:21,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 15:54:21,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 15:54:21,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 15:54:21,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:54:20" (1/1) ... [2022-11-16 15:54:21,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:54:20" (1/1) ... [2022-11-16 15:54:21,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:54:20" (1/1) ... [2022-11-16 15:54:21,025 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:54:20" (1/1) ... [2022-11-16 15:54:21,041 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:54:20" (1/1) ... [2022-11-16 15:54:21,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:54:20" (1/1) ... [2022-11-16 15:54:21,046 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:54:20" (1/1) ... [2022-11-16 15:54:21,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:54:20" (1/1) ... [2022-11-16 15:54:21,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 15:54:21,058 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 15:54:21,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 15:54:21,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 15:54:21,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:54:20" (1/1) ... [2022-11-16 15:54:21,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 15:54:21,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:54:21,095 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 15:54:21,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 15:54:21,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 15:54:21,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 15:54:21,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 15:54:21,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 15:54:21,150 INFO L130 BoogieDeclarations]: Found specification of procedure bAnd [2022-11-16 15:54:21,150 INFO L138 BoogieDeclarations]: Found implementation of procedure bAnd [2022-11-16 15:54:21,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 15:54:21,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 15:54:21,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 15:54:21,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 15:54:21,239 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 15:54:21,241 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 15:54:21,439 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 15:54:21,513 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 15:54:21,514 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 15:54:21,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:54:21 BoogieIcfgContainer [2022-11-16 15:54:21,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 15:54:21,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 15:54:21,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 15:54:21,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 15:54:21,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 03:54:20" (1/3) ... [2022-11-16 15:54:21,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5959202c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:54:21, skipping insertion in model container [2022-11-16 15:54:21,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:54:20" (2/3) ... [2022-11-16 15:54:21,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5959202c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:54:21, skipping insertion in model container [2022-11-16 15:54:21,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:54:21" (3/3) ... [2022-11-16 15:54:21,545 INFO L112 eAbstractionObserver]: Analyzing ICFG bAnd2.i [2022-11-16 15:54:21,565 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 15:54:21,565 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-16 15:54:21,618 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 15:54:21,626 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;@32cc3136, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 15:54:21,626 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-16 15:54:21,631 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 16 states have (on average 1.6875) internal successors, (27), 24 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 15:54:21,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 15:54:21,639 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:54:21,639 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 15:54:21,640 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bAndErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bAndErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 15:54:21,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:54:21,646 INFO L85 PathProgramCache]: Analyzing trace with hash 128943, now seen corresponding path program 1 times [2022-11-16 15:54:21,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:54:21,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141885228] [2022-11-16 15:54:21,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:21,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:54:21,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:54:22,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:54:22,008 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:54:22,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141885228] [2022-11-16 15:54:22,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141885228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:54:22,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:54:22,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 15:54:22,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081971824] [2022-11-16 15:54:22,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:54:22,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 15:54:22,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:54:22,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 15:54:22,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 15:54:22,067 INFO L87 Difference]: Start difference. First operand has 29 states, 16 states have (on average 1.6875) internal successors, (27), 24 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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) [2022-11-16 15:54:22,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:54:22,175 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2022-11-16 15:54:22,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 15:54:22,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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 [2022-11-16 15:54:22,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:54:22,199 INFO L225 Difference]: With dead ends: 57 [2022-11-16 15:54:22,199 INFO L226 Difference]: Without dead ends: 30 [2022-11-16 15:54:22,203 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 [2022-11-16 15:54:22,210 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 15:54:22,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 68 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 15:54:22,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-16 15:54:22,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-16 15:54:22,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 26 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 15:54:22,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-11-16 15:54:22,285 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 3 [2022-11-16 15:54:22,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:54:22,285 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-11-16 15:54:22,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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) [2022-11-16 15:54:22,287 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-11-16 15:54:22,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 15:54:22,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:54:22,288 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-16 15:54:22,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 15:54:22,290 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bAndErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bAndErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 15:54:22,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:54:22,293 INFO L85 PathProgramCache]: Analyzing trace with hash -453547412, now seen corresponding path program 1 times [2022-11-16 15:54:22,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:54:22,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195116770] [2022-11-16 15:54:22,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:22,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:54:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:54:22,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 15:54:22,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:54:22,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195116770] [2022-11-16 15:54:22,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195116770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:54:22,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:54:22,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 15:54:22,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967223597] [2022-11-16 15:54:22,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:54:22,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 15:54:22,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:54:22,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 15:54:22,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 15:54:22,425 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-11-16 15:54:22,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:54:22,476 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2022-11-16 15:54:22,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 15:54:22,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 [2022-11-16 15:54:22,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:54:22,480 INFO L225 Difference]: With dead ends: 30 [2022-11-16 15:54:22,482 INFO L226 Difference]: Without dead ends: 29 [2022-11-16 15:54:22,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 15:54:22,484 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 2 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 15:54:22,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 40 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 15:54:22,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-16 15:54:22,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-16 15:54:22,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 25 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 15:54:22,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2022-11-16 15:54:22,490 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 6 [2022-11-16 15:54:22,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:54:22,491 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2022-11-16 15:54:22,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-11-16 15:54:22,491 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-11-16 15:54:22,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 15:54:22,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:54:22,495 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2022-11-16 15:54:22,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 15:54:22,496 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [bAndErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bAndErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 15:54:22,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:54:22,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1175067806, now seen corresponding path program 1 times [2022-11-16 15:54:22,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:54:22,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706975428] [2022-11-16 15:54:22,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:22,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:54:22,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:54:22,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:54:22,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:54:22,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706975428] [2022-11-16 15:54:22,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706975428] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 15:54:22,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224821446] [2022-11-16 15:54:22,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:22,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:54:22,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:54:22,666 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:54:22,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 15:54:22,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:54:22,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 15:54:22,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:54:22,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:54:22,809 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 15:54:22,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224821446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:54:22,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 15:54:22,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2022-11-16 15:54:22,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275104138] [2022-11-16 15:54:22,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:54:22,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 15:54:22,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:54:22,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 15:54:22,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 15:54:22,813 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2022-11-16 15:54:22,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:54:22,850 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-11-16 15:54:22,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 15:54:22,851 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 [2022-11-16 15:54:22,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:54:22,852 INFO L225 Difference]: With dead ends: 29 [2022-11-16 15:54:22,852 INFO L226 Difference]: Without dead ends: 28 [2022-11-16 15:54:22,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-16 15:54:22,854 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 15 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 48 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 [2022-11-16 15:54:22,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 48 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 15:54:22,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-16 15:54:22,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2022-11-16 15:54:22,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.5625) internal successors, (25), 22 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 15:54:22,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2022-11-16 15:54:22,861 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 7 [2022-11-16 15:54:22,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:54:22,862 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2022-11-16 15:54:22,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2022-11-16 15:54:22,862 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2022-11-16 15:54:22,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 15:54:22,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:54:22,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:54:22,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 15:54:23,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:54:23,070 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting bAndErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bAndErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bAndErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 15:54:23,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:54:23,070 INFO L85 PathProgramCache]: Analyzing trace with hash 344894582, now seen corresponding path program 1 times [2022-11-16 15:54:23,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:54:23,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28646006] [2022-11-16 15:54:23,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:23,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:54:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:54:23,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:54:23,143 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:54:23,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28646006] [2022-11-16 15:54:23,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28646006] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 15:54:23,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740893256] [2022-11-16 15:54:23,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:23,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:54:23,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:54:23,145 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:54:23,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 15:54:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:54:23,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 15:54:23,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:54:23,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:54:23,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 15:54:23,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:54:23,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740893256] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 15:54:23,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [949436813] [2022-11-16 15:54:23,366 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-16 15:54:23,366 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 15:54:23,370 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 15:54:23,376 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 15:54:23,377 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 15:54:23,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:23,500 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 15:54:23,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-16 15:54:23,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:23,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-16 15:54:23,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:23,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 31 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 112 [2022-11-16 15:54:23,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:23,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:23,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 32 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 127 [2022-11-16 15:54:24,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:24,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:24,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:24,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:24,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:24,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:24,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:24,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:24,072 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 15:54:24,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:24,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:24,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:24,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:24,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:24,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:24,088 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 15:54:24,125 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-16 15:54:24,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 35 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 22 case distinctions, treesize of input 333 treesize of output 313 [2022-11-16 15:54:24,389 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 15 treesize of output 11 [2022-11-16 15:54:24,448 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 12 for LOIs [2022-11-16 15:54:24,485 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 15:54:25,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [949436813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:54:25,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-16 15:54:25,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 4, 4] total 16 [2022-11-16 15:54:25,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087814720] [2022-11-16 15:54:25,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:54:25,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 15:54:25,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:54:25,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 15:54:25,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-11-16 15:54:25,152 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 9 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:54:25,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:54:25,576 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2022-11-16 15:54:25,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 15:54:25,580 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-16 15:54:25,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:54:25,581 INFO L225 Difference]: With dead ends: 49 [2022-11-16 15:54:25,581 INFO L226 Difference]: Without dead ends: 29 [2022-11-16 15:54:25,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-11-16 15:54:25,582 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 37 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 15:54:25,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 51 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 15:54:25,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-16 15:54:25,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-16 15:54:25,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 25 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 15:54:25,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2022-11-16 15:54:25,602 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 9 [2022-11-16 15:54:25,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:54:25,602 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2022-11-16 15:54:25,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:54:25,603 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-11-16 15:54:25,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 15:54:25,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:54:25,604 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:54:25,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 15:54:25,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:54:25,810 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting bAndErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bAndErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bAndErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 15:54:25,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:54:25,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1192778602, now seen corresponding path program 1 times [2022-11-16 15:54:25,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:54:25,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683733534] [2022-11-16 15:54:25,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:25,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:54:25,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:54:25,917 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 15:54:25,917 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:54:25,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683733534] [2022-11-16 15:54:25,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683733534] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 15:54:25,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428674588] [2022-11-16 15:54:25,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:25,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:54:25,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:54:25,920 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:54:25,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 15:54:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:54:25,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 15:54:25,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:54:26,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 15:54:26,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 15:54:26,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 15:54:26,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428674588] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 15:54:26,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1625167781] [2022-11-16 15:54:26,044 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-16 15:54:26,045 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 15:54:26,045 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 15:54:26,045 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 15:54:26,045 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 15:54:26,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:26,086 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 15:54:26,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-16 15:54:26,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:26,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-16 15:54:26,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:26,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 31 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 112 [2022-11-16 15:54:26,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:26,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:26,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 32 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 127 [2022-11-16 15:54:26,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:26,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:26,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:26,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:26,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:26,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:26,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:26,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:26,465 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 15:54:26,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:26,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:26,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:26,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:26,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:26,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:26,502 INFO L321 Elim1Store]: treesize reduction 107, result has 6.1 percent of original size [2022-11-16 15:54:26,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 42 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 22 case distinctions, treesize of input 349 treesize of output 310 [2022-11-16 15:54:26,581 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 15 treesize of output 11 [2022-11-16 15:54:26,614 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 12 for LOIs [2022-11-16 15:54:26,927 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 15:54:27,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1625167781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:54:27,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-16 15:54:27,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4, 4, 4] total 17 [2022-11-16 15:54:27,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749745558] [2022-11-16 15:54:27,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:54:27,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 15:54:27,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:54:27,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 15:54:27,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-11-16 15:54:27,557 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 10 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:54:27,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:54:27,928 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-11-16 15:54:27,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 15:54:27,929 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-16 15:54:27,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:54:27,930 INFO L225 Difference]: With dead ends: 29 [2022-11-16 15:54:27,930 INFO L226 Difference]: Without dead ends: 26 [2022-11-16 15:54:27,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-11-16 15:54:27,931 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 34 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 15:54:27,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 35 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 15:54:27,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-16 15:54:27,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2022-11-16 15:54:27,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 15:54:27,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-11-16 15:54:27,938 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 12 [2022-11-16 15:54:27,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:54:27,938 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-11-16 15:54:27,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:54:27,939 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-11-16 15:54:27,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-16 15:54:27,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:54:27,939 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:54:27,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 15:54:28,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:54:28,140 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [bAndErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bAndErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 15:54:28,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:54:28,143 INFO L85 PathProgramCache]: Analyzing trace with hash -26183244, now seen corresponding path program 1 times [2022-11-16 15:54:28,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:54:28,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631048044] [2022-11-16 15:54:28,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:28,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:54:28,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:54:28,277 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 15:54:28,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:54:28,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631048044] [2022-11-16 15:54:28,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631048044] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 15:54:28,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010602801] [2022-11-16 15:54:28,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:28,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:54:28,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:54:28,279 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:54:28,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 15:54:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:54:28,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 15:54:28,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:54:28,365 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 15:54:28,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 15:54:28,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010602801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:54:28,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 15:54:28,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-16 15:54:28,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881063155] [2022-11-16 15:54:28,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:54:28,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 15:54:28,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:54:28,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 15:54:28,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 15:54:28,368 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 15:54:28,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:54:28,399 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2022-11-16 15:54:28,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 15:54:28,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-11-16 15:54:28,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:54:28,401 INFO L225 Difference]: With dead ends: 32 [2022-11-16 15:54:28,401 INFO L226 Difference]: Without dead ends: 31 [2022-11-16 15:54:28,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 15:54:28,405 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 15:54:28,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 29 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 15:54:28,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-16 15:54:28,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2022-11-16 15:54:28,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 22 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 15:54:28,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-11-16 15:54:28,420 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 23 [2022-11-16 15:54:28,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:54:28,422 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-11-16 15:54:28,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 15:54:28,422 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-11-16 15:54:28,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 15:54:28,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:54:28,423 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:54:28,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 15:54:28,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 15:54:28,629 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [bAndErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bAndErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 15:54:28,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:54:28,630 INFO L85 PathProgramCache]: Analyzing trace with hash -811680467, now seen corresponding path program 1 times [2022-11-16 15:54:28,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:54:28,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359282372] [2022-11-16 15:54:28,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:28,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:54:28,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:54:28,746 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 15:54:28,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:54:28,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359282372] [2022-11-16 15:54:28,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359282372] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 15:54:28,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657985248] [2022-11-16 15:54:28,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:28,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:54:28,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:54:28,766 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:54:28,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 15:54:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:54:28,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 15:54:28,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:54:28,855 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 15:54:28,855 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 15:54:28,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657985248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:54:28,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 15:54:28,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-16 15:54:28,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241928384] [2022-11-16 15:54:28,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:54:28,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 15:54:28,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:54:28,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 15:54:28,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 15:54:28,857 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 15:54:28,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:54:28,889 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-11-16 15:54:28,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 15:54:28,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2022-11-16 15:54:28,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:54:28,892 INFO L225 Difference]: With dead ends: 32 [2022-11-16 15:54:28,892 INFO L226 Difference]: Without dead ends: 31 [2022-11-16 15:54:28,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 15:54:28,894 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 30 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 [2022-11-16 15:54:28,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 30 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 15:54:28,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-16 15:54:28,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2022-11-16 15:54:28,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.3) internal successors, (26), 23 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 15:54:28,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-11-16 15:54:28,911 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 24 [2022-11-16 15:54:28,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:54:28,911 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-11-16 15:54:28,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 15:54:28,912 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-11-16 15:54:28,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 15:54:28,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:54:28,913 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:54:28,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 15:54:29,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 15:54:29,119 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [bAndErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bAndErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 15:54:29,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:54:29,120 INFO L85 PathProgramCache]: Analyzing trace with hash 607710392, now seen corresponding path program 1 times [2022-11-16 15:54:29,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:54:29,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149705439] [2022-11-16 15:54:29,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:29,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:54:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:54:29,204 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 15:54:29,204 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:54:29,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149705439] [2022-11-16 15:54:29,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149705439] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 15:54:29,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152583282] [2022-11-16 15:54:29,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:29,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:54:29,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:54:29,206 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:54:29,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 15:54:29,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:54:29,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 15:54:29,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:54:29,305 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 15:54:29,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 15:54:29,346 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 15:54:29,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152583282] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 15:54:29,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1362054449] [2022-11-16 15:54:29,349 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-16 15:54:29,349 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 15:54:29,350 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 15:54:29,350 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 15:54:29,350 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 15:54:29,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:29,401 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 15:54:29,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-16 15:54:29,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:29,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-16 15:54:29,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:29,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 31 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 112 [2022-11-16 15:54:29,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:29,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:29,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 32 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 127 [2022-11-16 15:54:29,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:29,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:29,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:29,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:29,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:29,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:29,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:29,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:29,664 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 15:54:29,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:29,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:29,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:29,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:29,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:29,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:29,673 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 15:54:29,701 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-16 15:54:29,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 35 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 22 case distinctions, treesize of input 333 treesize of output 313 [2022-11-16 15:54:29,851 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 15 treesize of output 11 [2022-11-16 15:54:30,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:30,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 15:54:30,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:30,202 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 15:54:30,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-16 15:54:30,244 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 12 for LOIs [2022-11-16 15:54:30,436 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 15:54:33,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1362054449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:54:33,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-16 15:54:33,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [5, 4, 5] total 24 [2022-11-16 15:54:33,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288662937] [2022-11-16 15:54:33,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:54:33,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 15:54:33,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:54:33,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 15:54:33,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2022-11-16 15:54:33,662 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 16 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 15:54:33,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:54:33,782 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2022-11-16 15:54:33,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 15:54:33,784 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2022-11-16 15:54:33,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:54:33,784 INFO L225 Difference]: With dead ends: 29 [2022-11-16 15:54:33,784 INFO L226 Difference]: Without dead ends: 28 [2022-11-16 15:54:33,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2022-11-16 15:54:33,785 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 15:54:33,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 52 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 44 Unchecked, 0.1s Time] [2022-11-16 15:54:33,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-16 15:54:33,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-16 15:54:33,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 24 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 15:54:33,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2022-11-16 15:54:33,794 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 25 [2022-11-16 15:54:33,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:54:33,794 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2022-11-16 15:54:33,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 15:54:33,795 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-11-16 15:54:33,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-16 15:54:33,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:54:33,796 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:54:33,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 15:54:34,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-16 15:54:34,002 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [bAndErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bAndErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 15:54:34,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:54:34,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1659153071, now seen corresponding path program 1 times [2022-11-16 15:54:34,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:54:34,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403923784] [2022-11-16 15:54:34,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:34,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:54:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:54:34,075 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 15:54:34,076 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:54:34,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403923784] [2022-11-16 15:54:34,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403923784] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 15:54:34,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946066139] [2022-11-16 15:54:34,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:34,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:54:34,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:54:34,078 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:54:34,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 15:54:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:54:34,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 15:54:34,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:54:34,194 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 15:54:34,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 15:54:34,231 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 15:54:34,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946066139] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 15:54:34,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2001366072] [2022-11-16 15:54:34,235 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-11-16 15:54:34,236 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 15:54:34,236 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 15:54:34,236 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 15:54:34,236 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 15:54:34,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:34,283 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 15:54:34,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-16 15:54:34,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:34,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-16 15:54:34,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:34,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 31 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 112 [2022-11-16 15:54:34,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:34,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 32 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 132 [2022-11-16 15:54:34,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:34,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:34,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:34,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:34,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:34,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:34,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:34,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:34,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:34,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:34,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:34,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:34,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:34,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:34,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:34,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:34,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:34,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:34,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:34,584 INFO L321 Elim1Store]: treesize reduction 129, result has 5.1 percent of original size [2022-11-16 15:54:34,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 50 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 359 treesize of output 315 [2022-11-16 15:54:34,650 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 15 treesize of output 11 [2022-11-16 15:54:34,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:34,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 15:54:34,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:34,997 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 15:54:34,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-16 15:54:35,026 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 12 for LOIs [2022-11-16 15:54:35,219 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 15:54:36,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2001366072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:54:36,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-16 15:54:36,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [5, 4, 5] total 24 [2022-11-16 15:54:36,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802327630] [2022-11-16 15:54:36,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:54:36,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 15:54:36,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:54:36,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 15:54:36,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2022-11-16 15:54:36,387 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 16 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 15:54:36,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:54:36,824 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2022-11-16 15:54:36,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 15:54:36,826 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2022-11-16 15:54:36,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:54:36,827 INFO L225 Difference]: With dead ends: 30 [2022-11-16 15:54:36,827 INFO L226 Difference]: Without dead ends: 29 [2022-11-16 15:54:36,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2022-11-16 15:54:36,828 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 36 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 15:54:36,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 40 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 152 Invalid, 0 Unknown, 14 Unchecked, 0.2s Time] [2022-11-16 15:54:36,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-16 15:54:36,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-16 15:54:36,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 25 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 15:54:36,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2022-11-16 15:54:36,834 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 26 [2022-11-16 15:54:36,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:54:36,835 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2022-11-16 15:54:36,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 15:54:36,835 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-11-16 15:54:36,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-16 15:54:36,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:54:36,840 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:54:36,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 15:54:37,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:54:37,045 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [bAndErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bAndErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 15:54:37,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:54:37,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1013237393, now seen corresponding path program 1 times [2022-11-16 15:54:37,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:54:37,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730380695] [2022-11-16 15:54:37,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:37,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:54:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:54:37,250 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 15:54:37,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:54:37,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730380695] [2022-11-16 15:54:37,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730380695] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 15:54:37,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49453156] [2022-11-16 15:54:37,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:37,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:54:37,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:54:37,252 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:54:37,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 15:54:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:54:37,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 15:54:37,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:54:37,355 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 15:54:37,355 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 15:54:37,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49453156] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:54:37,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 15:54:37,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-16 15:54:37,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659538689] [2022-11-16 15:54:37,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:54:37,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 15:54:37,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:54:37,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 15:54:37,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 15:54:37,357 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 15:54:37,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:54:37,387 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2022-11-16 15:54:37,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 15:54:37,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2022-11-16 15:54:37,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:54:37,391 INFO L225 Difference]: With dead ends: 29 [2022-11-16 15:54:37,391 INFO L226 Difference]: Without dead ends: 28 [2022-11-16 15:54:37,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 15:54:37,393 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 15:54:37,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 25 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 15:54:37,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-16 15:54:37,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-16 15:54:37,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 24 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 15:54:37,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2022-11-16 15:54:37,411 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 28 [2022-11-16 15:54:37,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:54:37,412 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2022-11-16 15:54:37,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 15:54:37,412 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-11-16 15:54:37,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-16 15:54:37,416 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:54:37,416 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:54:37,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-16 15:54:37,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 15:54:37,622 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [bAndErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bAndErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 15:54:37,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:54:37,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1345588208, now seen corresponding path program 1 times [2022-11-16 15:54:37,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:54:37,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361788153] [2022-11-16 15:54:37,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:37,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:54:37,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:54:37,722 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 15:54:37,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:54:37,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361788153] [2022-11-16 15:54:37,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361788153] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 15:54:37,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695143945] [2022-11-16 15:54:37,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:37,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:54:37,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:54:37,728 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:54:37,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 15:54:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:54:37,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 15:54:37,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:54:37,837 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 15:54:37,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 15:54:37,881 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 15:54:37,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695143945] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 15:54:37,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1500511832] [2022-11-16 15:54:37,884 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-11-16 15:54:37,884 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 15:54:37,885 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 15:54:37,885 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 15:54:37,885 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 15:54:37,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:37,925 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 15:54:37,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-16 15:54:37,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:37,955 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 15:54:37,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-16 15:54:37,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:37,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 31 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 112 [2022-11-16 15:54:38,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:38,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 32 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 132 [2022-11-16 15:54:38,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:38,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:38,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:38,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:38,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:38,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:38,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:38,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:38,194 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 15:54:38,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:38,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:38,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:38,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:38,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:38,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:38,203 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 15:54:38,232 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-16 15:54:38,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 35 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 22 case distinctions, treesize of input 333 treesize of output 313 [2022-11-16 15:54:38,332 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 15 treesize of output 11 [2022-11-16 15:54:38,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:38,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 15:54:38,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:38,621 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 15:54:38,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-16 15:54:38,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:38,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:38,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:38,652 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 15:54:38,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2022-11-16 15:54:38,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:38,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:38,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:38,748 INFO L321 Elim1Store]: treesize reduction 47, result has 35.6 percent of original size [2022-11-16 15:54:38,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 89 [2022-11-16 15:54:38,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-16 15:54:38,881 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 12 for LOIs [2022-11-16 15:54:39,092 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 15:54:40,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1500511832] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:54:40,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-16 15:54:40,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [5, 4, 5] total 26 [2022-11-16 15:54:40,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751262862] [2022-11-16 15:54:40,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:54:40,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 15:54:40,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:54:40,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 15:54:40,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2022-11-16 15:54:40,671 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 18 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 15:54:41,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:54:41,033 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2022-11-16 15:54:41,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 15:54:41,034 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2022-11-16 15:54:41,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:54:41,034 INFO L225 Difference]: With dead ends: 28 [2022-11-16 15:54:41,034 INFO L226 Difference]: Without dead ends: 0 [2022-11-16 15:54:41,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=96, Invalid=606, Unknown=0, NotChecked=0, Total=702 [2022-11-16 15:54:41,036 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 15:54:41,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 2 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 130 Invalid, 0 Unknown, 10 Unchecked, 0.2s Time] [2022-11-16 15:54:41,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-16 15:54:41,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-16 15:54:41,037 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) [2022-11-16 15:54:41,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-16 15:54:41,038 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2022-11-16 15:54:41,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:54:41,038 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 15:54:41,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 15:54:41,038 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-16 15:54:41,038 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-16 15:54:41,041 INFO L805 garLoopResultBuilder]: Registering result SAFE for location bAndErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 8 remaining) [2022-11-16 15:54:41,042 INFO L805 garLoopResultBuilder]: Registering result SAFE for location bAndErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 8 remaining) [2022-11-16 15:54:41,042 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 8 remaining) [2022-11-16 15:54:41,042 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 8 remaining) [2022-11-16 15:54:41,042 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 8 remaining) [2022-11-16 15:54:41,043 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 8 remaining) [2022-11-16 15:54:41,043 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 8 remaining) [2022-11-16 15:54:41,043 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 8 remaining) [2022-11-16 15:54:41,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 15:54:41,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 15:54:41,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-16 15:54:41,950 INFO L899 garLoopResultBuilder]: For program point bAndErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2022-11-16 15:54:41,952 INFO L899 garLoopResultBuilder]: For program point L23-3(line 23) no Hoare annotation was computed. [2022-11-16 15:54:41,953 INFO L899 garLoopResultBuilder]: For program point L23-4(line 23) no Hoare annotation was computed. [2022-11-16 15:54:41,953 INFO L899 garLoopResultBuilder]: For program point bAndEXIT(lines 18 27) no Hoare annotation was computed. [2022-11-16 15:54:41,953 INFO L895 garLoopResultBuilder]: At program point L23-5(lines 23 25) the Hoare annotation is: (or (not (= |bAnd_#in~x.offset| 0)) (not (= |#NULL.offset| 0)) (not (= |#NULL.base| 0)) (not (<= 0 |#StackHeapBarrier|)) (not (<= 0 |bAnd_#in~x.base|)) (and (<= 0 bAnd_~x.offset) (<= 1 bAnd_~i~0) (<= 0 bAnd_~x.base) (<= bAnd_~x.offset 0) (or (and (= bAnd_~x.base |bAnd_#in~x.base|) (= bAnd_~res~0 (select (select |#memory_int| bAnd_~x.base) bAnd_~x.offset))) (<= 2 bAnd_~i~0)))) [2022-11-16 15:54:41,953 INFO L899 garLoopResultBuilder]: For program point bAndErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2022-11-16 15:54:41,954 INFO L902 garLoopResultBuilder]: At program point bAndENTRY(lines 18 27) the Hoare annotation is: true [2022-11-16 15:54:41,954 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 47) no Hoare annotation was computed. [2022-11-16 15:54:41,954 INFO L895 garLoopResultBuilder]: At program point L44(line 44) the Hoare annotation is: (and (<= 1000 |ULTIMATE.start_main_~i~1#1|) (<= |ULTIMATE.start_main_~i~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 4 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) [2022-11-16 15:54:41,954 INFO L899 garLoopResultBuilder]: For program point L44-1(line 44) no Hoare annotation was computed. [2022-11-16 15:54:41,954 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 37) no Hoare annotation was computed. [2022-11-16 15:54:41,954 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-16 15:54:41,954 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 46) no Hoare annotation was computed. [2022-11-16 15:54:41,954 INFO L899 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2022-11-16 15:54:41,954 INFO L899 garLoopResultBuilder]: For program point L37-3(line 37) no Hoare annotation was computed. [2022-11-16 15:54:41,954 INFO L899 garLoopResultBuilder]: For program point L37-4(line 37) no Hoare annotation was computed. [2022-11-16 15:54:41,955 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 37) no Hoare annotation was computed. [2022-11-16 15:54:41,955 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-16 15:54:41,956 INFO L895 garLoopResultBuilder]: At program point L37-5(lines 37 39) the Hoare annotation is: (let ((.cse3 (<= 1 |ULTIMATE.start_main_~i~1#1|))) (let ((.cse0 (let ((.cse4 (<= 0 |#NULL.base|)) (.cse5 (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|)) (.cse6 (<= |#NULL.offset| 0)) (.cse7 (<= |#NULL.base| 0)) (.cse8 (<= 0 |#NULL.offset|)) (.cse9 (<= |ULTIMATE.start_main_~#x~0#1.offset| 0))) (or (and .cse4 .cse5 .cse6 (<= |ULTIMATE.start_main_~i~1#1| 2147483647) .cse3 .cse7 (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) .cse8 .cse9 (<= 0 |#StackHeapBarrier|)) (and .cse4 (<= 0 |ULTIMATE.start_main_~i~1#1|) .cse5 .cse6 (<= |ULTIMATE.start_main_~i~1#1| 0) .cse7 .cse8 .cse9))))) (or (let ((.cse2 (select |#memory_int| 1)) (.cse1 (select |#memory_int| 2))) (and .cse0 (= (select .cse1 7) 0) (= (select .cse1 6) 99) (= 2 (select |#length| 1)) (= 65 (select .cse1 1)) (= (select .cse1 4) 50) (= 100 (select .cse1 3)) (= (select |#valid| |ULTIMATE.start_main_~#x~0#1.base|) 1) (= (select |#valid| 1) 1) (= (select |#length| |ULTIMATE.start_main_~#x~0#1.base|) 4000) (= (select |#valid| 0) 0) (= (select .cse1 5) 46) (= (select |#valid| 2) 1) (= 8 (select |#length| 2)) (= 110 (select .cse1 2)) (= (select .cse2 0) 48) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#x~0#1.base|) (= (select .cse2 1) 0) (= 98 (select .cse1 0)) (< 0 |#StackHeapBarrier|))) (and .cse0 .cse3)))) [2022-11-16 15:54:41,956 INFO L895 garLoopResultBuilder]: At program point L37-6(lines 37 39) the Hoare annotation is: (and (<= 1000 |ULTIMATE.start_main_~i~1#1|) (<= |ULTIMATE.start_main_~i~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) [2022-11-16 15:54:41,956 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 46) no Hoare annotation was computed. [2022-11-16 15:54:41,957 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (and (<= 1000 |ULTIMATE.start_main_~i~1#1|) (<= |ULTIMATE.start_main_~i~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) [2022-11-16 15:54:41,957 INFO L902 garLoopResultBuilder]: At program point L50-1(line 50) the Hoare annotation is: true [2022-11-16 15:54:41,957 INFO L899 garLoopResultBuilder]: For program point L46-3(line 46) no Hoare annotation was computed. [2022-11-16 15:54:41,957 INFO L899 garLoopResultBuilder]: For program point L46-4(line 46) no Hoare annotation was computed. [2022-11-16 15:54:41,958 INFO L895 garLoopResultBuilder]: At program point L46-5(lines 46 48) the Hoare annotation is: (let ((.cse0 (<= 1 |ULTIMATE.start_main_~i~2#1|))) (and (or .cse0 (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) |ULTIMATE.start_main_~#x~0#1.offset|) |ULTIMATE.start_main_~temp~0#1|)) (let ((.cse1 (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647)) (.cse2 (<= 1000 |ULTIMATE.start_main_~i~1#1|)) (.cse3 (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|)) (.cse4 (<= |ULTIMATE.start_main_~i~1#1| 2147483647)) (.cse5 (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648))) (.cse6 (<= |ULTIMATE.start_main_~#x~0#1.offset| 0))) (or (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse0 (<= |ULTIMATE.start_main_~i~2#1| 2147483647) .cse6) (and .cse1 (<= |ULTIMATE.start_main_~i~2#1| 0) .cse2 .cse3 (<= 0 |ULTIMATE.start_main_~i~2#1|) .cse4 .cse5 .cse6))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-16 15:54:41,958 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 47) no Hoare annotation was computed. [2022-11-16 15:54:41,958 INFO L899 garLoopResultBuilder]: For program point L47(line 47) no Hoare annotation was computed. [2022-11-16 15:54:41,958 INFO L899 garLoopResultBuilder]: For program point L47-1(line 47) no Hoare annotation was computed. [2022-11-16 15:54:41,967 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:54:41,970 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 15:54:42,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 03:54:42 BoogieIcfgContainer [2022-11-16 15:54:42,019 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 15:54:42,019 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 15:54:42,020 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 15:54:42,020 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 15:54:42,020 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:54:21" (3/4) ... [2022-11-16 15:54:42,023 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 15:54:42,029 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure bAnd [2022-11-16 15:54:42,037 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2022-11-16 15:54:42,037 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-16 15:54:42,038 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-16 15:54:42,038 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 15:54:42,038 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 15:54:42,079 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/witness.graphml [2022-11-16 15:54:42,079 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 15:54:42,080 INFO L158 Benchmark]: Toolchain (without parser) took 21431.53ms. Allocated memory was 117.4MB in the beginning and 281.0MB in the end (delta: 163.6MB). Free memory was 86.4MB in the beginning and 198.2MB in the end (delta: -111.8MB). Peak memory consumption was 51.2MB. Max. memory is 16.1GB. [2022-11-16 15:54:42,080 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 83.9MB. Free memory is still 35.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 15:54:42,080 INFO L158 Benchmark]: CACSL2BoogieTranslator took 296.94ms. Allocated memory is still 117.4MB. Free memory was 86.4MB in the beginning and 92.6MB in the end (delta: -6.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 15:54:42,080 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.36ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 91.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 15:54:42,081 INFO L158 Benchmark]: Boogie Preprocessor took 52.80ms. Allocated memory is still 117.4MB. Free memory was 91.0MB in the beginning and 89.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 15:54:42,081 INFO L158 Benchmark]: RCFGBuilder took 458.82ms. Allocated memory is still 117.4MB. Free memory was 89.4MB in the beginning and 72.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-16 15:54:42,081 INFO L158 Benchmark]: TraceAbstraction took 20499.95ms. Allocated memory was 117.4MB in the beginning and 281.0MB in the end (delta: 163.6MB). Free memory was 72.1MB in the beginning and 201.3MB in the end (delta: -129.2MB). Peak memory consumption was 149.6MB. Max. memory is 16.1GB. [2022-11-16 15:54:42,082 INFO L158 Benchmark]: Witness Printer took 59.63ms. Allocated memory is still 281.0MB. Free memory was 201.3MB in the beginning and 198.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 15:54:42,083 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 83.9MB. Free memory is still 35.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 296.94ms. Allocated memory is still 117.4MB. Free memory was 86.4MB in the beginning and 92.6MB in the end (delta: -6.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.36ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 91.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 52.80ms. Allocated memory is still 117.4MB. Free memory was 91.0MB in the beginning and 89.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 458.82ms. Allocated memory is still 117.4MB. Free memory was 89.4MB in the beginning and 72.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 20499.95ms. Allocated memory was 117.4MB in the beginning and 281.0MB in the end (delta: 163.6MB). Free memory was 72.1MB in the beginning and 201.3MB in the end (delta: -129.2MB). Peak memory consumption was 149.6MB. Max. memory is 16.1GB. * Witness Printer took 59.63ms. Allocated memory is still 281.0MB. Free memory was 201.3MB in the beginning and 198.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. 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: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 37]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 37]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: 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 2 procedures, 29 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 20.4s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 187 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 176 mSDsluCounter, 420 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 68 IncrementalHoareTripleChecker+Unchecked, 270 mSDsCounter, 38 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 664 IncrementalHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 38 mSolverCounterUnsat, 150 mSDtfsCounter, 664 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 423 GetRequests, 293 SyntacticMatches, 4 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 758 ImplicationChecksByTransitivity, 8.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=1, InterpolantAutomatonStates: 78, 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, 11 MinimizatonAttempts, 13 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 22 PreInvPairs, 32 NumberOfFragments, 452 HoareAnnotationTreeSize, 22 FomulaSimplifications, 132 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 469 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 375 NumberOfCodeBlocks, 375 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 451 ConstructedInterpolants, 0 QuantifiedInterpolants, 637 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1142 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 25 InterpolantComputations, 6 PerfectInterpolantSequences, 177/198 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: 5.3s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 10, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 88, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 192, TOOLS_POST_TIME: 4.1s, TOOLS_POST_CALL_APPLICATIONS: 20, TOOLS_POST_CALL_TIME: 0.2s, TOOLS_POST_RETURN_APPLICATIONS: 12, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 224, TOOLS_QUANTIFIERELIM_TIME: 4.3s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.3s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 380, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 43, DOMAIN_JOIN_TIME: 0.2s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 19, DOMAIN_WIDEN_TIME: 0.3s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 32, DOMAIN_ISSUBSETEQ_TIME: 0.1s, DOMAIN_ISBOTTOM_APPLICATIONS: 88, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 13, LOOP_SUMMARIZER_CACHE_MISSES: 13, LOOP_SUMMARIZER_OVERALL_TIME: 3.5s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 3.5s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 32, CALL_SUMMARIZER_APPLICATIONS: 12, CALL_SUMMARIZER_CACHE_MISSES: 3, CALL_SUMMARIZER_OVERALL_TIME: 0.5s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.5s, 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: 1262, DAG_COMPRESSION_RETAINED_NODES: 264, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((((!(x == 0) || !(#NULL == 0)) || !(#NULL == 0)) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(0 <= x)) || ((((0 <= x && 1 <= i) && 0 <= x) && x <= 0) && ((x == x && res == unknown-#memory_int-unknown[x][x]) || 2 <= i)) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((0 <= #NULL && 0 <= x) && #NULL <= 0) && i <= 2147483647) && 1 <= i) && #NULL <= 0) && 0 <= x) && 0 <= #NULL) && x <= 0) && 0 <= unknown-#StackHeapBarrier-unknown) || (((((((0 <= #NULL && 0 <= i) && 0 <= x) && #NULL <= 0) && i <= 0) && #NULL <= 0) && 0 <= #NULL) && x <= 0)) && unknown-#memory_int-unknown[2][7] == 0) && unknown-#memory_int-unknown[2][6] == 99) && 2 == unknown-#length-unknown[1]) && 65 == unknown-#memory_int-unknown[2][1]) && unknown-#memory_int-unknown[2][4] == 50) && 100 == unknown-#memory_int-unknown[2][3]) && \valid[x] == 1) && \valid[1] == 1) && unknown-#length-unknown[x] == 4000) && \valid[0] == 0) && unknown-#memory_int-unknown[2][5] == 46) && \valid[2] == 1) && 8 == unknown-#length-unknown[2]) && 110 == unknown-#memory_int-unknown[2][2]) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#StackHeapBarrier-unknown < x) && unknown-#memory_int-unknown[1][1] == 0) && 98 == unknown-#memory_int-unknown[2][0]) && 0 < unknown-#StackHeapBarrier-unknown) || (((((((((((0 <= #NULL && 0 <= x) && #NULL <= 0) && i <= 2147483647) && 1 <= i) && #NULL <= 0) && 0 <= x) && 0 <= #NULL) && x <= 0) && 0 <= unknown-#StackHeapBarrier-unknown) || (((((((0 <= #NULL && 0 <= i) && 0 <= x) && #NULL <= 0) && i <= 0) && #NULL <= 0) && 0 <= #NULL) && x <= 0)) && 1 <= i) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((((((1 <= i || unknown-#memory_int-unknown[x][x] == temp) && ((((((((ret2 <= 2147483647 && 1000 <= i) && 0 <= x) && i <= 2147483647) && 0 <= ret2 + 2147483648) && 1 <= i) && i <= 2147483647) && x <= 0) || (((((((ret2 <= 2147483647 && i <= 0) && 1000 <= i) && 0 <= x) && 0 <= i) && i <= 2147483647) && 0 <= ret2 + 2147483648) && x <= 0))) && #NULL == 0) && 0 <= x) && 0 <= ret + 2147483648) && ret <= 2147483647) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-16 15:54:42,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0295067-832d-491a-a84c-276e49e1ad5f/bin/utaipan-Xvt2sAort0/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