./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/modulus-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abeccae3-622a-4c7d-b9f5-d49bc140c2f9/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abeccae3-622a-4c7d-b9f5-d49bc140c2f9/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abeccae3-622a-4c7d-b9f5-d49bc140c2f9/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abeccae3-622a-4c7d-b9f5-d49bc140c2f9/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/modulus-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abeccae3-622a-4c7d-b9f5-d49bc140c2f9/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abeccae3-622a-4c7d-b9f5-d49bc140c2f9/bin/utaipan-SDwSMHVbGG --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e27c7bb6749f8e5b84d1a08471e4a4b137cd36c4eaed216d5d03e50d41359cea ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 04:37:53,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:37:53,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:37:53,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:37:53,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:37:53,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:37:53,128 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:37:53,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:37:53,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:37:53,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:37:53,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:37:53,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:37:53,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:37:53,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:37:53,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:37:53,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:37:53,149 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:37:53,150 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:37:53,153 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:37:53,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:37:53,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:37:53,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:37:53,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:37:53,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:37:53,170 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:37:53,171 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:37:53,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:37:53,173 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:37:53,174 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:37:53,176 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:37:53,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:37:53,178 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:37:53,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:37:53,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:37:53,182 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:37:53,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:37:53,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:37:53,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:37:53,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:37:53,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:37:53,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:37:53,189 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abeccae3-622a-4c7d-b9f5-d49bc140c2f9/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 04:37:53,221 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:37:53,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:37:53,227 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:37:53,228 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:37:53,228 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:37:53,229 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:37:53,229 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 04:37:53,229 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:37:53,229 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:37:53,230 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 04:37:53,230 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 04:37:53,230 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:37:53,232 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 04:37:53,232 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 04:37:53,233 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 04:37:53,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:37:53,234 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:37:53,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 04:37:53,235 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:37:53,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:37:53,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:37:53,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:37:53,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:37:53,236 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:37:53,236 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:37:53,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:37:53,237 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:37:53,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:37:53,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:37:53,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:37:53,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:37:53,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:37:53,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:37:53,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:37:53,242 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 04:37:53,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 04:37:53,244 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:37:53,244 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:37:53,245 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:37:53,245 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abeccae3-622a-4c7d-b9f5-d49bc140c2f9/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abeccae3-622a-4c7d-b9f5-d49bc140c2f9/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e27c7bb6749f8e5b84d1a08471e4a4b137cd36c4eaed216d5d03e50d41359cea [2021-10-29 04:37:53,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:37:53,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:37:53,680 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:37:53,682 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:37:53,683 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:37:53,684 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abeccae3-622a-4c7d-b9f5-d49bc140c2f9/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/bitvector/modulus-2.i [2021-10-29 04:37:53,777 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abeccae3-622a-4c7d-b9f5-d49bc140c2f9/bin/utaipan-SDwSMHVbGG/data/948b6adb5/789f706f20e943d6aefc0b1684859120/FLAG701503602 [2021-10-29 04:37:54,480 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:37:54,485 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abeccae3-622a-4c7d-b9f5-d49bc140c2f9/sv-benchmarks/c/bitvector/modulus-2.i [2021-10-29 04:37:54,500 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abeccae3-622a-4c7d-b9f5-d49bc140c2f9/bin/utaipan-SDwSMHVbGG/data/948b6adb5/789f706f20e943d6aefc0b1684859120/FLAG701503602 [2021-10-29 04:37:54,799 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abeccae3-622a-4c7d-b9f5-d49bc140c2f9/bin/utaipan-SDwSMHVbGG/data/948b6adb5/789f706f20e943d6aefc0b1684859120 [2021-10-29 04:37:54,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:37:54,804 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:37:54,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:37:54,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:37:54,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:37:54,812 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:37:54" (1/1) ... [2021-10-29 04:37:54,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f568458 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:54, skipping insertion in model container [2021-10-29 04:37:54,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:37:54" (1/1) ... [2021-10-29 04:37:54,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:37:54,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:37:55,035 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abeccae3-622a-4c7d-b9f5-d49bc140c2f9/sv-benchmarks/c/bitvector/modulus-2.i[947,960] [2021-10-29 04:37:55,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:37:55,078 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:37:55,095 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abeccae3-622a-4c7d-b9f5-d49bc140c2f9/sv-benchmarks/c/bitvector/modulus-2.i[947,960] [2021-10-29 04:37:55,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:37:55,133 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:37:55,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:55 WrapperNode [2021-10-29 04:37:55,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:37:55,135 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:37:55,135 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:37:55,135 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:37:55,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:55" (1/1) ... [2021-10-29 04:37:55,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:55" (1/1) ... [2021-10-29 04:37:55,177 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:37:55,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:37:55,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:37:55,179 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:37:55,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:55" (1/1) ... [2021-10-29 04:37:55,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:55" (1/1) ... [2021-10-29 04:37:55,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:55" (1/1) ... [2021-10-29 04:37:55,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:55" (1/1) ... [2021-10-29 04:37:55,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:55" (1/1) ... [2021-10-29 04:37:55,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:55" (1/1) ... [2021-10-29 04:37:55,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:55" (1/1) ... [2021-10-29 04:37:55,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:37:55,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:37:55,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:37:55,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:37:55,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:55" (1/1) ... [2021-10-29 04:37:55,237 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:37:55,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abeccae3-622a-4c7d-b9f5-d49bc140c2f9/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:37:55,262 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abeccae3-622a-4c7d-b9f5-d49bc140c2f9/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:37:55,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abeccae3-622a-4c7d-b9f5-d49bc140c2f9/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:37:55,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 04:37:55,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:37:55,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:37:55,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:37:55,661 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:37:55,676 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-29 04:37:55,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:37:55 BoogieIcfgContainer [2021-10-29 04:37:55,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:37:55,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:37:55,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:37:55,684 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:37:55,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:37:54" (1/3) ... [2021-10-29 04:37:55,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b81cea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:37:55, skipping insertion in model container [2021-10-29 04:37:55,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:37:55" (2/3) ... [2021-10-29 04:37:55,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b81cea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:37:55, skipping insertion in model container [2021-10-29 04:37:55,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:37:55" (3/3) ... [2021-10-29 04:37:55,687 INFO L111 eAbstractionObserver]: Analyzing ICFG modulus-2.i [2021-10-29 04:37:55,692 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:37:55,708 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 04:37:55,781 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:37:55,787 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 04:37:55,788 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 04:37:55,807 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 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) [2021-10-29 04:37:55,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-29 04:37:55,821 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:37:55,822 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-29 04:37:55,823 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:37:55,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:37:55,832 INFO L85 PathProgramCache]: Analyzing trace with hash 96472452, now seen corresponding path program 1 times [2021-10-29 04:37:55,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:37:55,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736077351] [2021-10-29 04:37:55,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:37:55,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:37:55,967 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 04:37:55,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [269598703] [2021-10-29 04:37:55,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:37:55,969 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:37:55,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abeccae3-622a-4c7d-b9f5-d49bc140c2f9/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:37:55,973 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abeccae3-622a-4c7d-b9f5-d49bc140c2f9/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:37:55,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abeccae3-622a-4c7d-b9f5-d49bc140c2f9/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 04:37:56,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:37:56,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-29 04:37:56,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:37:57,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:37:57,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:37:57,653 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:37:57,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736077351] [2021-10-29 04:37:57,654 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:37:57,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269598703] [2021-10-29 04:37:57,654 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger: modulus not positive [2021-10-29 04:37:57,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1277039183] [2021-10-29 04:37:57,677 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-29 04:37:57,678 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 04:37:57,682 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 04:37:57,688 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 04:37:57,689 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 04:37:57,715 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:37:57,716 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:37:57,717 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:37:57,718 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 04:37:57,719 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:37:57,719 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:37:57,720 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 04:37:57,722 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-10-29 04:37:57,747 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_12|], 10=[|v_#valid_13|]} [2021-10-29 04:37:57,759 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 04:37:57,759 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:37:57,760 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 04:37:57,760 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:37:57,761 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 04:37:57,761 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 04:37:57,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:37:57,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 04:37:57,779 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:37:57,780 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 04:37:57,781 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:37:57,781 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 04:37:57,782 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 04:37:57,784 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:37:57,821 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:37:57,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:37:57,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:37:57,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:37:57,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:37:57,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 04:37:57,851 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:37:57,855 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:37:57,856 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:37:57,857 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:37:57,858 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-29 04:37:57,858 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:37:57,891 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:37:57,893 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:37:57,901 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-10-29 04:37:57,902 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 04:37:57,902 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:204, output treesize:86 [2021-10-29 04:37:57,919 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:37:57,930 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-10-29 04:37:57,948 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 04:37:58,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1277039183] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:37:58,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:37:58,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 04:37:58,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313570256] [2021-10-29 04:37:58,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 04:37:58,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:37:58,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 04:37:58,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-29 04:37:58,559 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 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) Second operand has 5 states, 5 states have (on average 1.0) 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) [2021-10-29 04:37:58,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:37:58,638 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2021-10-29 04:37:58,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 04:37:58,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.0) 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 [2021-10-29 04:37:58,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:37:58,647 INFO L225 Difference]: With dead ends: 17 [2021-10-29 04:37:58,648 INFO L226 Difference]: Without dead ends: 8 [2021-10-29 04:37:58,650 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-29 04:37:58,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-29 04:37:58,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-29 04:37:58,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:37:58,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2021-10-29 04:37:58,679 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2021-10-29 04:37:58,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:37:58,679 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-10-29 04:37:58,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.0) 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) [2021-10-29 04:37:58,680 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2021-10-29 04:37:58,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 04:37:58,681 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:37:58,681 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:37:58,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abeccae3-622a-4c7d-b9f5-d49bc140c2f9/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 04:37:58,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abeccae3-622a-4c7d-b9f5-d49bc140c2f9/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-29 04:37:58,896 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:37:58,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:37:58,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1823918953, now seen corresponding path program 1 times [2021-10-29 04:37:58,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:37:58,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576451798] [2021-10-29 04:37:58,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:37:58,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:37:58,912 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 04:37:58,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1999214116] [2021-10-29 04:37:58,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:37:58,912 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:37:58,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abeccae3-622a-4c7d-b9f5-d49bc140c2f9/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:37:58,914 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abeccae3-622a-4c7d-b9f5-d49bc140c2f9/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:37:58,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abeccae3-622a-4c7d-b9f5-d49bc140c2f9/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-29 04:37:58,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:37:58,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 04:37:58,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:37:59,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:37:59,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:37:59,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:37:59,156 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:37:59,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576451798] [2021-10-29 04:37:59,156 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:37:59,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999214116] [2021-10-29 04:37:59,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999214116] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:37:59,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:37:59,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 5 [2021-10-29 04:37:59,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404211739] [2021-10-29 04:37:59,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 04:37:59,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:37:59,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 04:37:59,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:37:59,159 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:37:59,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:37:59,192 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2021-10-29 04:37:59,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 04:37:59,193 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-29 04:37:59,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:37:59,193 INFO L225 Difference]: With dead ends: 14 [2021-10-29 04:37:59,193 INFO L226 Difference]: Without dead ends: 9 [2021-10-29 04:37:59,194 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-29 04:37:59,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-29 04:37:59,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-29 04:37:59,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:37:59,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-10-29 04:37:59,197 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 7 [2021-10-29 04:37:59,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:37:59,198 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-10-29 04:37:59,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:37:59,198 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2021-10-29 04:37:59,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 04:37:59,199 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:37:59,199 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:37:59,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abeccae3-622a-4c7d-b9f5-d49bc140c2f9/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-29 04:37:59,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abeccae3-622a-4c7d-b9f5-d49bc140c2f9/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:37:59,420 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:37:59,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:37:59,421 INFO L85 PathProgramCache]: Analyzing trace with hash -740256525, now seen corresponding path program 1 times [2021-10-29 04:37:59,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:37:59,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272473042] [2021-10-29 04:37:59,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:37:59,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:37:59,442 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 04:37:59,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1980534903] [2021-10-29 04:37:59,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:37:59,450 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:37:59,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abeccae3-622a-4c7d-b9f5-d49bc140c2f9/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:37:59,451 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abeccae3-622a-4c7d-b9f5-d49bc140c2f9/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:37:59,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abeccae3-622a-4c7d-b9f5-d49bc140c2f9/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-29 04:37:59,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:37:59,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-29 04:37:59,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:38:00,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-29 04:38:00,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:38:00,624 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:38:00,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272473042] [2021-10-29 04:38:00,625 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:38:00,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980534903] [2021-10-29 04:38:00,625 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger: modulus not positive [2021-10-29 04:38:00,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [452793277] [2021-10-29 04:38:00,634 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-29 04:38:00,639 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 04:38:00,639 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 04:38:00,640 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 04:38:00,640 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 04:38:00,647 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:38:00,652 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:38:00,652 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:38:00,653 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 04:38:00,654 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:38:00,655 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:38:00,656 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 04:38:00,659 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-10-29 04:38:00,667 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 10=[|v_#valid_14|]} [2021-10-29 04:38:00,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:38:00,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 04:38:00,680 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:38:00,685 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 04:38:00,686 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:38:00,686 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 04:38:00,687 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 04:38:00,692 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 04:38:00,693 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:38:00,693 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 04:38:00,694 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:38:00,695 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 04:38:00,695 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 04:38:00,696 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:38:00,715 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:38:00,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:38:00,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:38:00,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:38:00,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:38:00,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 04:38:00,734 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:38:00,736 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:38:00,737 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:38:00,738 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:38:00,738 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-29 04:38:00,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:38:00,748 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:38:00,749 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:38:00,752 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-10-29 04:38:00,753 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 04:38:00,753 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:204, output treesize:86 [2021-10-29 04:38:00,761 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:38:00,765 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-10-29 04:38:00,772 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:38:00,782 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-10-29 04:38:00,788 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:38:00,810 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:38:00,834 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:38:00,871 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:38:00,887 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:38:00,890 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:38:00,895 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 208 [2021-10-29 04:38:00,899 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:38:00,903 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:38:00,912 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 218 [2021-10-29 04:38:00,917 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 264 [2021-10-29 04:38:00,928 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:38:00,940 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:38:00,944 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:38:00,952 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-10-29 04:38:00,957 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 270 [2021-10-29 04:38:00,968 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:38:00,971 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-10-29 04:38:00,999 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:38:01,001 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-10-29 04:38:01,004 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:38:01,016 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-10-29 04:38:01,020 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:38:01,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:38:01,051 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:38:01,076 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:38:01,085 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:38:01,087 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:38:01,092 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 206 [2021-10-29 04:38:01,100 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:38:01,103 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:38:01,116 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 216 [2021-10-29 04:38:01,119 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 262 [2021-10-29 04:38:01,124 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 04:38:01,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [452793277] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:38:01,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:38:01,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-29 04:38:01,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797905617] [2021-10-29 04:38:01,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 04:38:01,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:38:01,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 04:38:01,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-29 04:38:01,877 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:38:02,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:38:02,076 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2021-10-29 04:38:02,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 04:38:02,076 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 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 8 [2021-10-29 04:38:02,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:38:02,077 INFO L225 Difference]: With dead ends: 9 [2021-10-29 04:38:02,077 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 04:38:02,077 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-10-29 04:38:02,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 04:38:02,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 04:38:02,078 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) [2021-10-29 04:38:02,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 04:38:02,078 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-10-29 04:38:02,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:38:02,078 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 04:38:02,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:38:02,078 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 04:38:02,079 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 04:38:02,081 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:38:02,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abeccae3-622a-4c7d-b9f5-d49bc140c2f9/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-29 04:38:02,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abeccae3-622a-4c7d-b9f5-d49bc140c2f9/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:38:02,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 04:38:02,286 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:38:02,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:38:02,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:38:02,443 INFO L853 garLoopResultBuilder]: At program point L48-2(lines 48 51) the Hoare annotation is: (let ((.cse0 (mod ULTIMATE.start_main_~d~0 4294967296)) (.cse1 (select |#memory_int| |#t~string0.base|))) (and (< (mod ULTIMATE.start_main_~s~0 4294967296) 31) (= (select |#valid| |#t~string1.base|) 1) (< |#StackHeapBarrier| |#t~string1.base|) (< .cse0 4294967295) (< 0 .cse0) (= (select .cse1 (+ |#t~string0.offset| 1)) 0) (= 2 (select |#length| |#t~string0.base|)) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1) (= (select |#length| |#t~string1.base|) 12) (= (select |#valid| 0) 0) (= (select |#valid| |#t~string0.base|) 1) (= |#NULL.offset| 0) (< |#StackHeapBarrier| |#t~string0.base|) (= 48 (select .cse1 |#t~string0.offset|)) (= |#t~string1.offset| 0) (= |#t~string0.offset| 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| ULTIMATE.start_assume_abort_if_not_~cond))) [2021-10-29 04:38:02,443 INFO L857 garLoopResultBuilder]: For program point L44(lines 44 58) no Hoare annotation was computed. [2021-10-29 04:38:02,443 INFO L853 garLoopResultBuilder]: At program point L44-1(lines 44 58) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |#t~string0.base|))) (and (< (mod ULTIMATE.start_main_~s~0 4294967296) 31) (= (select |#valid| |#t~string1.base|) 1) (< |#StackHeapBarrier| |#t~string1.base|) (= (select .cse0 (+ |#t~string0.offset| 1)) 0) (= 2 (select |#length| |#t~string0.base|)) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1) (= (select |#length| |#t~string1.base|) 12) (= (select |#valid| 0) 0) (= (select |#valid| |#t~string0.base|) 1) (= |#NULL.offset| 0) (< |#StackHeapBarrier| |#t~string0.base|) (= 48 (select .cse0 |#t~string0.offset|)) (= |#t~string1.offset| 0) (= |#t~string0.offset| 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| ULTIMATE.start_assume_abort_if_not_~cond))) [2021-10-29 04:38:02,443 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 04:38:02,443 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-10-29 04:38:02,443 INFO L857 garLoopResultBuilder]: For program point L20(lines 20 22) no Hoare annotation was computed. [2021-10-29 04:38:02,443 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 04:38:02,444 INFO L857 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2021-10-29 04:38:02,444 INFO L853 garLoopResultBuilder]: At program point L46-2(lines 46 53) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |#t~string0.base|))) (and (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~m~0) (< (mod ULTIMATE.start_main_~s~0 4294967296) 31) (= (select |#valid| |#t~string1.base|) 1) (< |#StackHeapBarrier| |#t~string1.base|) (< 0 (mod ULTIMATE.start_main_~d~0 4294967296)) (= (select .cse0 (+ |#t~string0.offset| 1)) 0) (= 2 (select |#length| |#t~string0.base|)) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1) (= (select |#length| |#t~string1.base|) 12) (= (select |#valid| 0) 0) (= (select |#valid| |#t~string0.base|) 1) (= |#NULL.offset| 0) (< |#StackHeapBarrier| |#t~string0.base|) (= 48 (select .cse0 |#t~string0.offset|)) (= |#t~string1.offset| 0) (= |#t~string0.offset| 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| ULTIMATE.start_assume_abort_if_not_~cond))) [2021-10-29 04:38:02,447 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-10-29 04:38:02,448 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 04:38:02,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:38:02 BoogieIcfgContainer [2021-10-29 04:38:02,470 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 04:38:02,471 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:38:02,471 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:38:02,471 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:38:02,472 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:37:55" (3/4) ... [2021-10-29 04:38:02,480 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 04:38:02,490 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-29 04:38:02,491 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-29 04:38:02,491 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-29 04:38:02,491 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 04:38:02,514 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((s % 4294967296 < 31 && \valid["modulus-2.c"] == 1) && unknown-#StackHeapBarrier-unknown < "modulus-2.c") && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 2 == unknown-#length-unknown["0"]) && \old(cond) == 1) && unknown-#length-unknown["modulus-2.c"] == 12) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && 48 == unknown-#memory_int-unknown["0"]["0"]) && "modulus-2.c" == 0) && "0" == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && \old(cond) == cond [2021-10-29 04:38:02,515 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((n == m && s % 4294967296 < 31) && \valid["modulus-2.c"] == 1) && unknown-#StackHeapBarrier-unknown < "modulus-2.c") && 0 < d % 4294967296) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 2 == unknown-#length-unknown["0"]) && \old(cond) == 1) && unknown-#length-unknown["modulus-2.c"] == 12) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && 48 == unknown-#memory_int-unknown["0"]["0"]) && "modulus-2.c" == 0) && "0" == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && \old(cond) == cond [2021-10-29 04:38:02,515 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((s % 4294967296 < 31 && \valid["modulus-2.c"] == 1) && unknown-#StackHeapBarrier-unknown < "modulus-2.c") && d % 4294967296 < 4294967295) && 0 < d % 4294967296) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 2 == unknown-#length-unknown["0"]) && \old(cond) == 1) && unknown-#length-unknown["modulus-2.c"] == 12) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && 48 == unknown-#memory_int-unknown["0"]["0"]) && "modulus-2.c" == 0) && "0" == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && \old(cond) == cond [2021-10-29 04:38:02,527 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abeccae3-622a-4c7d-b9f5-d49bc140c2f9/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 04:38:02,527 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:38:02,528 INFO L168 Benchmark]: Toolchain (without parser) took 7724.27 ms. Allocated memory was 119.5 MB in the beginning and 155.2 MB in the end (delta: 35.7 MB). Free memory was 78.5 MB in the beginning and 65.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 48.0 MB. Max. memory is 16.1 GB. [2021-10-29 04:38:02,529 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 119.5 MB. Free memory is still 94.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:38:02,529 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.04 ms. Allocated memory is still 119.5 MB. Free memory was 78.3 MB in the beginning and 93.0 MB in the end (delta: -14.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 04:38:02,529 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.14 ms. Allocated memory is still 119.5 MB. Free memory was 92.8 MB in the beginning and 91.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:38:02,530 INFO L168 Benchmark]: Boogie Preprocessor took 48.60 ms. Allocated memory is still 119.5 MB. Free memory was 91.4 MB in the beginning and 90.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:38:02,533 INFO L168 Benchmark]: RCFGBuilder took 451.59 ms. Allocated memory is still 119.5 MB. Free memory was 90.3 MB in the beginning and 78.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 04:38:02,534 INFO L168 Benchmark]: TraceAbstraction took 6790.18 ms. Allocated memory was 119.5 MB in the beginning and 155.2 MB in the end (delta: 35.7 MB). Free memory was 77.7 MB in the beginning and 68.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 46.4 MB. Max. memory is 16.1 GB. [2021-10-29 04:38:02,534 INFO L168 Benchmark]: Witness Printer took 56.54 ms. Allocated memory is still 155.2 MB. Free memory was 67.4 MB in the beginning and 65.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:38:02,537 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 119.5 MB. Free memory is still 94.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 328.04 ms. Allocated memory is still 119.5 MB. Free memory was 78.3 MB in the beginning and 93.0 MB in the end (delta: -14.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.14 ms. Allocated memory is still 119.5 MB. Free memory was 92.8 MB in the beginning and 91.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.60 ms. Allocated memory is still 119.5 MB. Free memory was 91.4 MB in the beginning and 90.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 451.59 ms. Allocated memory is still 119.5 MB. Free memory was 90.3 MB in the beginning and 78.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6790.18 ms. Allocated memory was 119.5 MB in the beginning and 155.2 MB in the end (delta: 35.7 MB). Free memory was 77.7 MB in the beginning and 68.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 46.4 MB. Max. memory is 16.1 GB. * Witness Printer took 56.54 ms. Allocated memory is still 155.2 MB. Free memory was 67.4 MB in the beginning and 65.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 22 SDslu, 10 SDs, 0 SdLazy, 49 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 9 NumberOfFragments, 240 HoareAnnotationTreeSize, 3 FomulaSimplifications, 299 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 71 SizeOfPredicates, 10 NumberOfNonLiveVariables, 139 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME[ms]: 762, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 10, DAG_INTERPRETER_EARLY_EXITS: 2, TOOLS_POST_APPLICATIONS: 15, TOOLS_POST_TIME[ms]: 518, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 15, TOOLS_QUANTIFIERELIM_TIME[ms]: 508, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 190, FLUID_QUERY_TIME[ms]: 4, FLUID_QUERIES: 39, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME[ms]: 0, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 131, DOMAIN_ISSUBSETEQ_APPLICATIONS: 5, DOMAIN_ISSUBSETEQ_TIME[ms]: 13, DOMAIN_ISBOTTOM_APPLICATIONS: 10, DOMAIN_ISBOTTOM_TIME[ms]: 48, LOOP_SUMMARIZER_APPLICATIONS: 3, LOOP_SUMMARIZER_CACHE_MISSES: 3, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 328, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 328, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 5, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 2, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 7, DAG_COMPRESSION_PROCESSED_NODES: 70, DAG_COMPRESSION_RETAINED_NODES: 40, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: (((((((((((((((((s % 4294967296 < 31 && \valid["modulus-2.c"] == 1) && unknown-#StackHeapBarrier-unknown < "modulus-2.c") && d % 4294967296 < 4294967295) && 0 < d % 4294967296) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 2 == unknown-#length-unknown["0"]) && \old(cond) == 1) && unknown-#length-unknown["modulus-2.c"] == 12) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && 48 == unknown-#memory_int-unknown["0"]["0"]) && "modulus-2.c" == 0) && "0" == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && \old(cond) == cond - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((((((((((((((((n == m && s % 4294967296 < 31) && \valid["modulus-2.c"] == 1) && unknown-#StackHeapBarrier-unknown < "modulus-2.c") && 0 < d % 4294967296) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 2 == unknown-#length-unknown["0"]) && \old(cond) == 1) && unknown-#length-unknown["modulus-2.c"] == 12) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && 48 == unknown-#memory_int-unknown["0"]["0"]) && "modulus-2.c" == 0) && "0" == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && \old(cond) == cond - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: (((((((((((((((s % 4294967296 < 31 && \valid["modulus-2.c"] == 1) && unknown-#StackHeapBarrier-unknown < "modulus-2.c") && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 2 == unknown-#length-unknown["0"]) && \old(cond) == 1) && unknown-#length-unknown["modulus-2.c"] == 12) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && 48 == unknown-#memory_int-unknown["0"]["0"]) && "modulus-2.c" == 0) && "0" == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && \old(cond) == cond RESULT: Ultimate proved your program to be correct! [2021-10-29 04:38:02,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abeccae3-622a-4c7d-b9f5-d49bc140c2f9/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...