./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Singapore-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7013cd86-5700-4a39-b9df-a1f679231772/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7013cd86-5700-4a39-b9df-a1f679231772/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7013cd86-5700-4a39-b9df-a1f679231772/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7013cd86-5700-4a39-b9df-a1f679231772/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/Singapore-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7013cd86-5700-4a39-b9df-a1f679231772/bin/utaipan-6cKwYrpEi9/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7013cd86-5700-4a39-b9df-a1f679231772/bin/utaipan-6cKwYrpEi9 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 14352272474fcd72367ebff6d0f1f20f37763259fc59dc19b61cd8b29efae381 --- 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-6b4ec56 [2022-11-20 21:12:16,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 21:12:16,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 21:12:16,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 21:12:16,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 21:12:16,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 21:12:16,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 21:12:16,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 21:12:16,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 21:12:16,112 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 21:12:16,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 21:12:16,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 21:12:16,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 21:12:16,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 21:12:16,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 21:12:16,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 21:12:16,129 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 21:12:16,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 21:12:16,132 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 21:12:16,138 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 21:12:16,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 21:12:16,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 21:12:16,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 21:12:16,145 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 21:12:16,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 21:12:16,154 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 21:12:16,154 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 21:12:16,155 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 21:12:16,155 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 21:12:16,156 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 21:12:16,156 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 21:12:16,157 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 21:12:16,158 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 21:12:16,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 21:12:16,159 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 21:12:16,160 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 21:12:16,160 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 21:12:16,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 21:12:16,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 21:12:16,162 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 21:12:16,162 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 21:12:16,166 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7013cd86-5700-4a39-b9df-a1f679231772/bin/utaipan-6cKwYrpEi9/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-20 21:12:16,207 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 21:12:16,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 21:12:16,207 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 21:12:16,208 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 21:12:16,208 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 21:12:16,208 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 21:12:16,209 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 21:12:16,209 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 21:12:16,209 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 21:12:16,209 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 21:12:16,209 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 21:12:16,209 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 21:12:16,210 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 21:12:16,210 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 21:12:16,210 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 21:12:16,210 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 21:12:16,210 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 21:12:16,210 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 21:12:16,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 21:12:16,214 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 21:12:16,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 21:12:16,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 21:12:16,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 21:12:16,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 21:12:16,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 21:12:16,216 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 21:12:16,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 21:12:16,216 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 21:12:16,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 21:12:16,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 21:12:16,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 21:12:16,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:12:16,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 21:12:16,218 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 21:12:16,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 21:12:16,218 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 21:12:16,219 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 21:12:16,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 21:12:16,220 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 21:12:16,220 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 21:12:16,220 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_7013cd86-5700-4a39-b9df-a1f679231772/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7013cd86-5700-4a39-b9df-a1f679231772/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14352272474fcd72367ebff6d0f1f20f37763259fc59dc19b61cd8b29efae381 [2022-11-20 21:12:16,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 21:12:16,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 21:12:16,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 21:12:16,571 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 21:12:16,572 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 21:12:16,573 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7013cd86-5700-4a39-b9df-a1f679231772/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/termination-crafted/Singapore-2.c [2022-11-20 21:12:19,720 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 21:12:19,884 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 21:12:19,884 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7013cd86-5700-4a39-b9df-a1f679231772/sv-benchmarks/c/termination-crafted/Singapore-2.c [2022-11-20 21:12:19,889 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7013cd86-5700-4a39-b9df-a1f679231772/bin/utaipan-6cKwYrpEi9/data/dc1d0bcca/bd003fe1486448148b92c9c0ab268e3e/FLAG8913fa14a [2022-11-20 21:12:19,903 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7013cd86-5700-4a39-b9df-a1f679231772/bin/utaipan-6cKwYrpEi9/data/dc1d0bcca/bd003fe1486448148b92c9c0ab268e3e [2022-11-20 21:12:19,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 21:12:19,907 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 21:12:19,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 21:12:19,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 21:12:19,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 21:12:19,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:12:19" (1/1) ... [2022-11-20 21:12:19,924 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cf48354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:12:19, skipping insertion in model container [2022-11-20 21:12:19,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:12:19" (1/1) ... [2022-11-20 21:12:19,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 21:12:19,956 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:12:20,146 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:12:20,151 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 21:12:20,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:12:20,172 INFO L208 MainTranslator]: Completed translation [2022-11-20 21:12:20,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:12:20 WrapperNode [2022-11-20 21:12:20,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 21:12:20,174 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 21:12:20,174 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 21:12:20,174 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 21:12:20,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:12:20" (1/1) ... [2022-11-20 21:12:20,184 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:12:20" (1/1) ... [2022-11-20 21:12:20,201 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 33 [2022-11-20 21:12:20,201 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 21:12:20,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 21:12:20,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 21:12:20,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 21:12:20,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:12:20" (1/1) ... [2022-11-20 21:12:20,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:12:20" (1/1) ... [2022-11-20 21:12:20,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:12:20" (1/1) ... [2022-11-20 21:12:20,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:12:20" (1/1) ... [2022-11-20 21:12:20,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:12:20" (1/1) ... [2022-11-20 21:12:20,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:12:20" (1/1) ... [2022-11-20 21:12:20,216 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:12:20" (1/1) ... [2022-11-20 21:12:20,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:12:20" (1/1) ... [2022-11-20 21:12:20,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 21:12:20,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 21:12:20,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 21:12:20,219 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 21:12:20,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:12:20" (1/1) ... [2022-11-20 21:12:20,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:12:20,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7013cd86-5700-4a39-b9df-a1f679231772/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:12:20,249 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7013cd86-5700-4a39-b9df-a1f679231772/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 21:12:20,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7013cd86-5700-4a39-b9df-a1f679231772/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 21:12:20,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 21:12:20,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 21:12:20,359 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 21:12:20,361 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 21:12:20,470 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 21:12:20,486 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 21:12:20,487 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 21:12:20,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:12:20 BoogieIcfgContainer [2022-11-20 21:12:20,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 21:12:20,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 21:12:20,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 21:12:20,495 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 21:12:20,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:12:19" (1/3) ... [2022-11-20 21:12:20,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c5f6032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:12:20, skipping insertion in model container [2022-11-20 21:12:20,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:12:20" (2/3) ... [2022-11-20 21:12:20,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c5f6032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:12:20, skipping insertion in model container [2022-11-20 21:12:20,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:12:20" (3/3) ... [2022-11-20 21:12:20,499 INFO L112 eAbstractionObserver]: Analyzing ICFG Singapore-2.c [2022-11-20 21:12:20,525 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 21:12:20,526 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-20 21:12:20,607 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 21:12:20,619 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;@65b7ec6c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 21:12:20,620 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-20 21:12:20,624 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 15 states have (on average 1.8) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:12:20,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 21:12:20,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:12:20,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 21:12:20,633 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 21:12:20,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:12:20,642 INFO L85 PathProgramCache]: Analyzing trace with hash 2449974, now seen corresponding path program 1 times [2022-11-20 21:12:20,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:12:20,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647929086] [2022-11-20 21:12:20,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:12:20,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:12:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:12:20,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:12:20,929 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:12:20,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647929086] [2022-11-20 21:12:20,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647929086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:12:20,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:12:20,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:12:20,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301389870] [2022-11-20 21:12:20,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:12:20,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 21:12:20,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:12:20,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 21:12:20,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 21:12:20,984 INFO L87 Difference]: Start difference. First operand has 24 states, 15 states have (on average 1.8) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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) [2022-11-20 21:12:21,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:12:21,122 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2022-11-20 21:12:21,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 21:12:21,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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 4 [2022-11-20 21:12:21,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:12:21,133 INFO L225 Difference]: With dead ends: 38 [2022-11-20 21:12:21,147 INFO L226 Difference]: Without dead ends: 27 [2022-11-20 21:12:21,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:12:21,153 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 31 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:12:21,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 16 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:12:21,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-20 21:12:21,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2022-11-20 21:12:21,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:12:21,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2022-11-20 21:12:21,190 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 4 [2022-11-20 21:12:21,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:12:21,190 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2022-11-20 21:12:21,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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) [2022-11-20 21:12:21,191 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2022-11-20 21:12:21,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 21:12:21,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:12:21,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 21:12:21,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 21:12:21,193 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 21:12:21,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:12:21,199 INFO L85 PathProgramCache]: Analyzing trace with hash 75949240, now seen corresponding path program 1 times [2022-11-20 21:12:21,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:12:21,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437920737] [2022-11-20 21:12:21,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:12:21,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:12:21,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:12:21,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:12:21,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:12:21,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437920737] [2022-11-20 21:12:21,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437920737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:12:21,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:12:21,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:12:21,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644540281] [2022-11-20 21:12:21,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:12:21,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 21:12:21,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:12:21,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 21:12:21,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 21:12:21,248 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:12:21,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:12:21,306 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2022-11-20 21:12:21,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 21:12:21,307 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 21:12:21,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:12:21,308 INFO L225 Difference]: With dead ends: 26 [2022-11-20 21:12:21,308 INFO L226 Difference]: Without dead ends: 23 [2022-11-20 21:12:21,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:12:21,310 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 20 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:12:21,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 10 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:12:21,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-20 21:12:21,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-20 21:12:21,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 22 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:12:21,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2022-11-20 21:12:21,316 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 5 [2022-11-20 21:12:21,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:12:21,317 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2022-11-20 21:12:21,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:12:21,317 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2022-11-20 21:12:21,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 21:12:21,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:12:21,318 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:12:21,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 21:12:21,319 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 21:12:21,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:12:21,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1258425985, now seen corresponding path program 1 times [2022-11-20 21:12:21,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:12:21,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977874544] [2022-11-20 21:12:21,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:12:21,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:12:21,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:12:21,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:12:21,414 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:12:21,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977874544] [2022-11-20 21:12:21,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977874544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:12:21,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:12:21,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 21:12:21,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002158523] [2022-11-20 21:12:21,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:12:21,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:12:21,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:12:21,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:12:21,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:12:21,418 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2022-11-20 21:12:21,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:12:21,441 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2022-11-20 21:12:21,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:12:21,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2022-11-20 21:12:21,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:12:21,443 INFO L225 Difference]: With dead ends: 23 [2022-11-20 21:12:21,443 INFO L226 Difference]: Without dead ends: 22 [2022-11-20 21:12:21,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:12:21,445 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:12:21,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 5 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:12:21,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-20 21:12:21,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-20 21:12:21,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 21 states have internal predecessors, (22), 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) [2022-11-20 21:12:21,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2022-11-20 21:12:21,465 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 12 [2022-11-20 21:12:21,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:12:21,466 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2022-11-20 21:12:21,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2022-11-20 21:12:21,466 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2022-11-20 21:12:21,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 21:12:21,467 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:12:21,467 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:12:21,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 21:12:21,468 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 21:12:21,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:12:21,469 INFO L85 PathProgramCache]: Analyzing trace with hash -356499801, now seen corresponding path program 1 times [2022-11-20 21:12:21,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:12:21,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536726134] [2022-11-20 21:12:21,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:12:21,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:12:21,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:12:21,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:12:21,597 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:12:21,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536726134] [2022-11-20 21:12:21,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536726134] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:12:21,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:12:21,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 21:12:21,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738758782] [2022-11-20 21:12:21,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:12:21,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:12:21,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:12:21,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:12:21,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:12:21,601 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-11-20 21:12:21,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:12:21,629 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2022-11-20 21:12:21,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:12:21,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2022-11-20 21:12:21,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:12:21,631 INFO L225 Difference]: With dead ends: 25 [2022-11-20 21:12:21,631 INFO L226 Difference]: Without dead ends: 24 [2022-11-20 21:12:21,632 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 [2022-11-20 21:12:21,633 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:12:21,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:12:21,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-20 21:12:21,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-20 21:12:21,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.2) internal successors, (24), 23 states have internal predecessors, (24), 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) [2022-11-20 21:12:21,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2022-11-20 21:12:21,640 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 13 [2022-11-20 21:12:21,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:12:21,641 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2022-11-20 21:12:21,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-11-20 21:12:21,642 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2022-11-20 21:12:21,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 21:12:21,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:12:21,662 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:12:21,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 21:12:21,662 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 21:12:21,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:12:21,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1001076777, now seen corresponding path program 1 times [2022-11-20 21:12:21,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:12:21,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262208486] [2022-11-20 21:12:21,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:12:21,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:12:21,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:12:21,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:12:21,766 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:12:21,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262208486] [2022-11-20 21:12:21,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262208486] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:12:21,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938163813] [2022-11-20 21:12:21,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:12:21,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:12:21,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7013cd86-5700-4a39-b9df-a1f679231772/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:12:21,771 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7013cd86-5700-4a39-b9df-a1f679231772/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:12:21,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7013cd86-5700-4a39-b9df-a1f679231772/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 21:12:21,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:12:21,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:12:21,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:12:21,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:12:21,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:12:22,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:12:22,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938163813] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:12:22,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2024624522] [2022-11-20 21:12:22,073 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-20 21:12:22,074 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:12:22,077 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:12:22,088 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:12:22,091 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:12:22,578 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:12:23,164 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '361#(and (= (mod (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1| 1) 2) 0) (<= (+ |ULTIMATE.start_main_~y~0#1| (* (div (+ |ULTIMATE.start_main_~y~0#1| (* (- 1) |ULTIMATE.start_main_~x~0#1|) 1) (- 2)) 2)) 2147483646) (not (<= (* 2 |ULTIMATE.start_main_~x~0#1|) 2147483647)) (<= |ULTIMATE.start_main_~y~0#1| 65533) (<= (div (+ |ULTIMATE.start_main_~y~0#1| (* (- 1) |ULTIMATE.start_main_~x~0#1|) 1) (- 2)) 1073741823))' at error location [2022-11-20 21:12:23,164 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:12:23,164 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:12:23,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2022-11-20 21:12:23,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730076002] [2022-11-20 21:12:23,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 21:12:23,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 21:12:23,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:12:23,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 21:12:23,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-11-20 21:12:23,167 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 8 states, 7 states have (on average 6.0) internal successors, (42), 8 states have internal predecessors, (42), 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) [2022-11-20 21:12:23,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:12:23,218 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2022-11-20 21:12:23,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 21:12:23,219 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 8 states have internal predecessors, (42), 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 15 [2022-11-20 21:12:23,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:12:23,219 INFO L225 Difference]: With dead ends: 24 [2022-11-20 21:12:23,220 INFO L226 Difference]: Without dead ends: 22 [2022-11-20 21:12:23,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2022-11-20 21:12:23,222 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 14 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:12:23,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:12:23,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-20 21:12:23,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-20 21:12:23,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 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) [2022-11-20 21:12:23,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2022-11-20 21:12:23,227 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 15 [2022-11-20 21:12:23,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:12:23,227 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2022-11-20 21:12:23,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 8 states have internal predecessors, (42), 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) [2022-11-20 21:12:23,228 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2022-11-20 21:12:23,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 21:12:23,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:12:23,229 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:12:23,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7013cd86-5700-4a39-b9df-a1f679231772/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 21:12:23,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7013cd86-5700-4a39-b9df-a1f679231772/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:12:23,435 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 21:12:23,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:12:23,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1174578185, now seen corresponding path program 1 times [2022-11-20 21:12:23,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:12:23,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450085817] [2022-11-20 21:12:23,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:12:23,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:12:23,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:12:23,506 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:12:23,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:12:23,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450085817] [2022-11-20 21:12:23,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450085817] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:12:23,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173606102] [2022-11-20 21:12:23,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:12:23,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:12:23,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7013cd86-5700-4a39-b9df-a1f679231772/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:12:23,518 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7013cd86-5700-4a39-b9df-a1f679231772/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:12:23,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7013cd86-5700-4a39-b9df-a1f679231772/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 21:12:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:12:23,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:12:23,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:12:23,627 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:12:23,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:12:23,685 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:12:23,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173606102] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:12:23,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1270337592] [2022-11-20 21:12:23,698 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-20 21:12:23,698 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:12:23,698 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:12:23,699 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:12:23,699 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:12:23,913 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:12:24,384 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '533#(and (<= |ULTIMATE.start_main_~x~0#1| 1073741823) (<= 0 |ULTIMATE.start_main_~x~0#1|) (< (+ (* 2 |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~y~0#1| 2147483648) 0))' at error location [2022-11-20 21:12:24,384 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:12:24,384 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:12:24,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-11-20 21:12:24,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408080830] [2022-11-20 21:12:24,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 21:12:24,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 21:12:24,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:12:24,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 21:12:24,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2022-11-20 21:12:24,386 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 9 states, 8 states have (on average 4.875) internal successors, (39), 9 states have internal predecessors, (39), 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) [2022-11-20 21:12:24,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:12:24,517 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2022-11-20 21:12:24,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 21:12:24,517 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 9 states have internal predecessors, (39), 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 18 [2022-11-20 21:12:24,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:12:24,518 INFO L225 Difference]: With dead ends: 30 [2022-11-20 21:12:24,518 INFO L226 Difference]: Without dead ends: 28 [2022-11-20 21:12:24,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2022-11-20 21:12:24,520 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 27 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:12:24,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 6 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:12:24,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-20 21:12:24,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-20 21:12:24,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:12:24,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2022-11-20 21:12:24,524 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 18 [2022-11-20 21:12:24,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:12:24,524 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2022-11-20 21:12:24,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 9 states have internal predecessors, (39), 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) [2022-11-20 21:12:24,525 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2022-11-20 21:12:24,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-20 21:12:24,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:12:24,526 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:12:24,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7013cd86-5700-4a39-b9df-a1f679231772/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 21:12:24,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7013cd86-5700-4a39-b9df-a1f679231772/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:12:24,726 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 21:12:24,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:12:24,727 INFO L85 PathProgramCache]: Analyzing trace with hash 814278247, now seen corresponding path program 1 times [2022-11-20 21:12:24,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:12:24,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609156526] [2022-11-20 21:12:24,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:12:24,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:12:24,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:12:24,846 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:12:24,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:12:24,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609156526] [2022-11-20 21:12:24,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609156526] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:12:24,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649236724] [2022-11-20 21:12:24,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:12:24,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:12:24,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7013cd86-5700-4a39-b9df-a1f679231772/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:12:24,849 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7013cd86-5700-4a39-b9df-a1f679231772/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:12:24,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7013cd86-5700-4a39-b9df-a1f679231772/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 21:12:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:12:24,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 21:12:24,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:12:24,991 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:12:24,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:12:25,162 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:12:25,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649236724] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:12:25,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1566622769] [2022-11-20 21:12:25,167 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-20 21:12:25,167 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:12:25,168 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:12:25,168 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:12:25,171 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:12:25,348 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:12:25,905 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '787#(and (= (mod (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) 2) 0) (<= (div (+ (* (- 1) |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~x~0#1|) 2) 1073741823) (<= 0 (+ (* (div (+ (* (- 1) |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~x~0#1|) 2) 2) |ULTIMATE.start_main_~y~0#1| 2147483648)) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0))' at error location [2022-11-20 21:12:25,905 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:12:25,905 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:12:25,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 16 [2022-11-20 21:12:25,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285535542] [2022-11-20 21:12:25,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 21:12:25,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 21:12:25,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:12:25,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 21:12:25,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2022-11-20 21:12:25,908 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 17 states, 16 states have (on average 4.9375) internal successors, (79), 17 states have internal predecessors, (79), 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) [2022-11-20 21:12:26,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:12:26,262 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2022-11-20 21:12:26,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 21:12:26,262 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.9375) internal successors, (79), 17 states have internal predecessors, (79), 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 27 [2022-11-20 21:12:26,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:12:26,263 INFO L225 Difference]: With dead ends: 47 [2022-11-20 21:12:26,263 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 21:12:26,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 54 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=377, Invalid=1105, Unknown=0, NotChecked=0, Total=1482 [2022-11-20 21:12:26,264 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 70 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:12:26,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 7 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:12:26,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 21:12:26,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 21:12:26,266 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) [2022-11-20 21:12:26,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 21:12:26,266 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2022-11-20 21:12:26,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:12:26,266 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 21:12:26,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.9375) internal successors, (79), 17 states have internal predecessors, (79), 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) [2022-11-20 21:12:26,267 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 21:12:26,267 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 21:12:26,269 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 8 remaining) [2022-11-20 21:12:26,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 8 remaining) [2022-11-20 21:12:26,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 8 remaining) [2022-11-20 21:12:26,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 8 remaining) [2022-11-20 21:12:26,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 8 remaining) [2022-11-20 21:12:26,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 8 remaining) [2022-11-20 21:12:26,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 8 remaining) [2022-11-20 21:12:26,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 8 remaining) [2022-11-20 21:12:26,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7013cd86-5700-4a39-b9df-a1f679231772/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 21:12:26,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7013cd86-5700-4a39-b9df-a1f679231772/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:12:26,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 21:12:26,534 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2022-11-20 21:12:26,535 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 21:12:26,535 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2022-11-20 21:12:26,535 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2022-11-20 21:12:26,535 INFO L902 garLoopResultBuilder]: At program point L25(lines 10 26) the Hoare annotation is: true [2022-11-20 21:12:26,536 INFO L899 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2022-11-20 21:12:26,536 INFO L899 garLoopResultBuilder]: For program point L21-1(line 21) no Hoare annotation was computed. [2022-11-20 21:12:26,536 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2022-11-20 21:12:26,536 INFO L899 garLoopResultBuilder]: For program point L21-2(line 21) no Hoare annotation was computed. [2022-11-20 21:12:26,536 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2022-11-20 21:12:26,536 INFO L899 garLoopResultBuilder]: For program point L21-3(line 21) no Hoare annotation was computed. [2022-11-20 21:12:26,537 INFO L899 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2022-11-20 21:12:26,537 INFO L899 garLoopResultBuilder]: For program point L19-2(lines 19 24) no Hoare annotation was computed. [2022-11-20 21:12:26,537 INFO L899 garLoopResultBuilder]: For program point L19-3(lines 19 24) no Hoare annotation was computed. [2022-11-20 21:12:26,537 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2022-11-20 21:12:26,537 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2022-11-20 21:12:26,537 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2022-11-20 21:12:26,538 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 21:12:26,538 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2022-11-20 21:12:26,538 INFO L899 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2022-11-20 21:12:26,538 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2022-11-20 21:12:26,538 INFO L899 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2022-11-20 21:12:26,539 INFO L895 garLoopResultBuilder]: At program point L20-2(lines 20 23) the Hoare annotation is: (and (< 0 (+ 2147483650 |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~x~0#1| 65535) (or (<= 0 (+ 2147483647 |ULTIMATE.start_main_~y~0#1|)) (not (< 0 |ULTIMATE.start_main_~x~0#1|))) (<= (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647)) [2022-11-20 21:12:26,539 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2022-11-20 21:12:26,542 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:12:26,544 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 21:12:26,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:12:26 BoogieIcfgContainer [2022-11-20 21:12:26,557 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 21:12:26,558 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 21:12:26,558 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 21:12:26,558 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 21:12:26,559 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:12:20" (3/4) ... [2022-11-20 21:12:26,562 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 21:12:26,570 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-20 21:12:26,570 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-20 21:12:26,570 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 21:12:26,599 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7013cd86-5700-4a39-b9df-a1f679231772/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 21:12:26,599 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 21:12:26,600 INFO L158 Benchmark]: Toolchain (without parser) took 6692.96ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 106.9MB in the beginning and 56.4MB in the end (delta: 50.4MB). Peak memory consumption was 79.1MB. Max. memory is 16.1GB. [2022-11-20 21:12:26,600 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 115.3MB. Free memory is still 83.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 21:12:26,600 INFO L158 Benchmark]: CACSL2BoogieTranslator took 264.96ms. Allocated memory is still 144.7MB. Free memory was 106.6MB in the beginning and 112.3MB in the end (delta: -5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-20 21:12:26,601 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.59ms. Allocated memory is still 144.7MB. Free memory was 112.3MB in the beginning and 110.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 21:12:26,601 INFO L158 Benchmark]: Boogie Preprocessor took 16.31ms. Allocated memory is still 144.7MB. Free memory was 110.9MB in the beginning and 109.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 21:12:26,601 INFO L158 Benchmark]: RCFGBuilder took 271.24ms. Allocated memory is still 144.7MB. Free memory was 109.8MB in the beginning and 99.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 21:12:26,602 INFO L158 Benchmark]: TraceAbstraction took 6065.24ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 98.7MB in the beginning and 58.5MB in the end (delta: 40.1MB). Peak memory consumption was 70.5MB. Max. memory is 16.1GB. [2022-11-20 21:12:26,602 INFO L158 Benchmark]: Witness Printer took 41.28ms. Allocated memory is still 174.1MB. Free memory was 58.5MB in the beginning and 56.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 21:12:26,604 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 115.3MB. Free memory is still 83.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 264.96ms. Allocated memory is still 144.7MB. Free memory was 106.6MB in the beginning and 112.3MB in the end (delta: -5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.59ms. Allocated memory is still 144.7MB. Free memory was 112.3MB in the beginning and 110.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.31ms. Allocated memory is still 144.7MB. Free memory was 110.9MB in the beginning and 109.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 271.24ms. Allocated memory is still 144.7MB. Free memory was 109.8MB in the beginning and 99.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 6065.24ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 98.7MB in the beginning and 58.5MB in the end (delta: 40.1MB). Peak memory consumption was 70.5MB. Max. memory is 16.1GB. * Witness Printer took 41.28ms. Allocated memory is still 174.1MB. Free memory was 58.5MB in the beginning and 56.4MB in the end (delta: 2.1MB). 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: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 6.0s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 167 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 167 mSDsluCounter, 60 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 52 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 258 IncrementalHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 52 mSolverCounterUnsat, 37 mSDtfsCounter, 258 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 215 GetRequests, 120 SyntacticMatches, 14 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=6, InterpolantAutomatonStates: 47, 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, 7 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 9 NumberOfFragments, 28 HoareAnnotationTreeSize, 2 FomulaSimplifications, 15 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 150 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 154 NumberOfCodeBlocks, 154 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 201 ConstructedInterpolants, 0 QuantifiedInterpolants, 1042 SizeOfPredicates, 7 NumberOfNonLiveVariables, 99 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 13 InterpolantComputations, 4 PerfectInterpolantSequences, 0/84 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (((0 < 2147483650 + y && x <= 65535) && (0 <= 2147483647 + y || !(0 < x))) && x + y <= 0) && y <= 2147483647 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-20 21:12:26,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7013cd86-5700-4a39-b9df-a1f679231772/bin/utaipan-6cKwYrpEi9/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