./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/ex3_forlist.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/ex3_forlist.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7 --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 33fdb29d081e8788960943f1182fbfb10ca7dcdfe7c31b22aaab16bda45fd1b8 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:07:45,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:07:45,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:07:45,157 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:07:45,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:07:45,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:07:45,161 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:07:45,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:07:45,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:07:45,167 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:07:45,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:07:45,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:07:45,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:07:45,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:07:45,174 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:07:45,176 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:07:45,177 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:07:45,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:07:45,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:07:45,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:07:45,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:07:45,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:07:45,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:07:45,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:07:45,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:07:45,194 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:07:45,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:07:45,195 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:07:45,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:07:45,197 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:07:45,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:07:45,199 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:07:45,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:07:45,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:07:45,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:07:45,203 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:07:45,204 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:07:45,205 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:07:45,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:07:45,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:07:45,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:07:45,209 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:07:45,253 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:07:45,253 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:07:45,254 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:07:45,254 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:07:45,255 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:07:45,255 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:07:45,256 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:07:45,256 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:07:45,256 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:07:45,256 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:07:45,257 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:07:45,258 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:07:45,258 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:07:45,258 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:07:45,258 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:07:45,259 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:07:45,259 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:07:45,259 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:07:45,260 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:07:45,261 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:07:45,261 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:07:45,261 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:07:45,261 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:07:45,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:07:45,262 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:07:45,262 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:07:45,264 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:07:45,264 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:07:45,264 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:07:45,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:07:45,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:07:45,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:07:45,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:07:45,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:07:45,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:07:45,266 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:07:45,266 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:07:45,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:07:45,267 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:07:45,267 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:07:45,267 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:07:45,267 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_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33fdb29d081e8788960943f1182fbfb10ca7dcdfe7c31b22aaab16bda45fd1b8 [2021-11-25 19:07:45,565 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:07:45,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:07:45,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:07:45,599 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:07:45,600 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:07:45,601 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-regression/ex3_forlist.i [2021-11-25 19:07:45,712 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/data/3821d57cc/f4aac1532a7e45c9bed5e186d485f920/FLAGce35d8cb1 [2021-11-25 19:07:46,272 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:07:46,273 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/sv-benchmarks/c/ldv-regression/ex3_forlist.i [2021-11-25 19:07:46,284 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/data/3821d57cc/f4aac1532a7e45c9bed5e186d485f920/FLAGce35d8cb1 [2021-11-25 19:07:46,624 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/data/3821d57cc/f4aac1532a7e45c9bed5e186d485f920 [2021-11-25 19:07:46,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:07:46,631 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:07:46,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:07:46,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:07:46,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:07:46,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:07:46" (1/1) ... [2021-11-25 19:07:46,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@449d8fac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:07:46, skipping insertion in model container [2021-11-25 19:07:46,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:07:46" (1/1) ... [2021-11-25 19:07:46,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:07:46,679 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:07:46,856 WARN L230 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_e0703a5a-c874-4635-a5d9-c24102178b2e/sv-benchmarks/c/ldv-regression/ex3_forlist.i[293,306] [2021-11-25 19:07:46,884 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:07:46,891 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:07:46,901 WARN L230 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_e0703a5a-c874-4635-a5d9-c24102178b2e/sv-benchmarks/c/ldv-regression/ex3_forlist.i[293,306] [2021-11-25 19:07:46,910 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:07:46,925 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:07:46,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:07:46 WrapperNode [2021-11-25 19:07:46,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:07:46,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:07:46,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:07:46,927 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:07:46,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:07:46" (1/1) ... [2021-11-25 19:07:46,942 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:07:46" (1/1) ... [2021-11-25 19:07:46,962 INFO L137 Inliner]: procedures = 19, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2021-11-25 19:07:46,962 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:07:46,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:07:46,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:07:46,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:07:46,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:07:46" (1/1) ... [2021-11-25 19:07:46,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:07:46" (1/1) ... [2021-11-25 19:07:46,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:07:46" (1/1) ... [2021-11-25 19:07:46,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:07:46" (1/1) ... [2021-11-25 19:07:46,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:07:46" (1/1) ... [2021-11-25 19:07:47,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:07:46" (1/1) ... [2021-11-25 19:07:47,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:07:46" (1/1) ... [2021-11-25 19:07:47,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:07:47,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:07:47,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:07:47,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:07:47,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:07:46" (1/1) ... [2021-11-25 19:07:47,034 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:07:47,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:07:47,056 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:07:47,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:07:47,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:07:47,099 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-25 19:07:47,099 INFO L138 BoogieDeclarations]: Found implementation of procedure malloc [2021-11-25 19:07:47,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:07:47,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:07:47,100 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-11-25 19:07:47,100 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-11-25 19:07:47,100 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-11-25 19:07:47,100 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-11-25 19:07:47,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:07:47,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:07:47,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:07:47,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:07:47,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:07:47,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:07:47,228 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:07:47,230 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:07:47,538 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:07:47,581 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:07:47,582 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-25 19:07:47,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:07:47 BoogieIcfgContainer [2021-11-25 19:07:47,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:07:47,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:07:47,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:07:47,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:07:47,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:07:46" (1/3) ... [2021-11-25 19:07:47,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1511812c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:07:47, skipping insertion in model container [2021-11-25 19:07:47,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:07:46" (2/3) ... [2021-11-25 19:07:47,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1511812c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:07:47, skipping insertion in model container [2021-11-25 19:07:47,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:07:47" (3/3) ... [2021-11-25 19:07:47,593 INFO L111 eAbstractionObserver]: Analyzing ICFG ex3_forlist.i [2021-11-25 19:07:47,599 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:07:47,599 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:07:47,668 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:07:47,680 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 [2021-11-25 19:07:47,680 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:07:47,711 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 20 states have internal predecessors, (27), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-25 19:07:47,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-25 19:07:47,718 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:07:47,719 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:07:47,720 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:07:47,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:07:47,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1151867181, now seen corresponding path program 1 times [2021-11-25 19:07:47,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:07:47,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238138431] [2021-11-25 19:07:47,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:07:47,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:07:47,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:07:48,021 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:07:48,021 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:07:48,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238138431] [2021-11-25 19:07:48,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238138431] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:07:48,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:07:48,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:07:48,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333004107] [2021-11-25 19:07:48,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:07:48,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:07:48,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:07:48,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:07:48,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:07:48,067 INFO L87 Difference]: Start difference. First operand has 30 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 20 states have internal predecessors, (27), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:07:48,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:07:48,133 INFO L93 Difference]: Finished difference Result 59 states and 79 transitions. [2021-11-25 19:07:48,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:07:48,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 27 [2021-11-25 19:07:48,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:07:48,144 INFO L225 Difference]: With dead ends: 59 [2021-11-25 19:07:48,144 INFO L226 Difference]: Without dead ends: 28 [2021-11-25 19:07:48,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:07:48,152 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:07:48,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:07:48,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-25 19:07:48,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-11-25 19:07:48,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:07:48,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2021-11-25 19:07:48,197 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 27 [2021-11-25 19:07:48,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:07:48,197 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2021-11-25 19:07:48,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:07:48,199 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2021-11-25 19:07:48,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-25 19:07:48,203 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:07:48,204 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:07:48,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:07:48,205 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:07:48,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:07:48,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1825419747, now seen corresponding path program 1 times [2021-11-25 19:07:48,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:07:48,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271259947] [2021-11-25 19:07:48,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:07:48,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:07:48,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:07:48,344 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:07:48,345 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:07:48,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271259947] [2021-11-25 19:07:48,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271259947] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:07:48,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946362188] [2021-11-25 19:07:48,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:07:48,347 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:07:48,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:07:48,355 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:07:48,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:07:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:07:48,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:07:48,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:07:48,580 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 19:07:48,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:07:48,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946362188] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:07:48,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:07:48,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-25 19:07:48,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462012272] [2021-11-25 19:07:48,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:07:48,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:07:48,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:07:48,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:07:48,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:07:48,589 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:07:48,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:07:48,642 INFO L93 Difference]: Finished difference Result 49 states and 65 transitions. [2021-11-25 19:07:48,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:07:48,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2021-11-25 19:07:48,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:07:48,646 INFO L225 Difference]: With dead ends: 49 [2021-11-25 19:07:48,646 INFO L226 Difference]: Without dead ends: 32 [2021-11-25 19:07:48,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:07:48,650 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 3 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:07:48,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 49 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:07:48,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-25 19:07:48,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2021-11-25 19:07:48,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:07:48,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2021-11-25 19:07:48,668 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 28 [2021-11-25 19:07:48,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:07:48,668 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2021-11-25 19:07:48,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:07:48,669 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2021-11-25 19:07:48,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-25 19:07:48,670 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:07:48,671 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:07:48,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:07:48,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:07:48,884 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:07:48,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:07:48,885 INFO L85 PathProgramCache]: Analyzing trace with hash 156542529, now seen corresponding path program 1 times [2021-11-25 19:07:48,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:07:48,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406001988] [2021-11-25 19:07:48,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:07:48,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:07:48,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:07:48,966 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-25 19:07:48,966 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:07:48,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406001988] [2021-11-25 19:07:48,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406001988] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:07:48,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64426937] [2021-11-25 19:07:48,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:07:48,970 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:07:48,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:07:48,980 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:07:49,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:07:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:07:49,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:07:49,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:07:49,211 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-25 19:07:49,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:07:49,294 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-25 19:07:49,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64426937] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:07:49,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1142663648] [2021-11-25 19:07:49,317 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2021-11-25 19:07:49,318 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:07:49,322 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:07:49,328 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:07:49,329 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:07:49,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:49,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 50 [2021-11-25 19:07:49,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:49,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 23 [2021-11-25 19:07:49,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:49,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 23 [2021-11-25 19:07:49,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:49,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:49,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:49,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:49,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 321 treesize of output 290 [2021-11-25 19:07:49,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:49,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:49,831 INFO L354 Elim1Store]: treesize reduction 58, result has 22.7 percent of original size [2021-11-25 19:07:49,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 347 treesize of output 304 [2021-11-25 19:07:49,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:49,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:49,894 INFO L354 Elim1Store]: treesize reduction 58, result has 22.7 percent of original size [2021-11-25 19:07:49,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 312 treesize of output 302 [2021-11-25 19:07:49,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:49,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:49,951 INFO L354 Elim1Store]: treesize reduction 58, result has 22.7 percent of original size [2021-11-25 19:07:49,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 347 treesize of output 304 [2021-11-25 19:07:50,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 12 [2021-11-25 19:07:50,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 25 [2021-11-25 19:07:50,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 12 [2021-11-25 19:07:50,316 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:07:50,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 23 [2021-11-25 19:07:50,349 INFO L354 Elim1Store]: treesize reduction 37, result has 33.9 percent of original size [2021-11-25 19:07:50,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 31 [2021-11-25 19:07:50,384 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:07:50,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 23 [2021-11-25 19:07:50,652 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:50,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:07:50,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:07:50,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:07:50,813 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:50,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:07:50,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:07:50,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:07:51,061 INFO L197 IcfgInterpreter]: Interpreting procedure g with input of size 67 for LOIs [2021-11-25 19:07:51,132 INFO L197 IcfgInterpreter]: Interpreting procedure f with input of size 20 for LOIs [2021-11-25 19:07:51,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 15 [2021-11-25 19:07:51,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2021-11-25 19:07:51,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 15 [2021-11-25 19:07:51,181 INFO L197 IcfgInterpreter]: Interpreting procedure malloc with input of size 49 for LOIs [2021-11-25 19:07:51,202 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:07:52,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1142663648] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:07:52,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:07:52,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 3, 4] total 24 [2021-11-25 19:07:52,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673166402] [2021-11-25 19:07:52,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:07:52,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-25 19:07:52,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:07:52,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-25 19:07:52,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2021-11-25 19:07:52,763 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 21 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 13 states have internal predecessors, (16), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-25 19:07:53,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:07:53,265 INFO L93 Difference]: Finished difference Result 59 states and 78 transitions. [2021-11-25 19:07:53,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-25 19:07:53,272 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 13 states have internal predecessors, (16), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 30 [2021-11-25 19:07:53,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:07:53,275 INFO L225 Difference]: With dead ends: 59 [2021-11-25 19:07:53,275 INFO L226 Difference]: Without dead ends: 49 [2021-11-25 19:07:53,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2021-11-25 19:07:53,279 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 24 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:07:53,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 51 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 19:07:53,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-11-25 19:07:53,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 42. [2021-11-25 19:07:53,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 30 states have internal predecessors, (38), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2021-11-25 19:07:53,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 55 transitions. [2021-11-25 19:07:53,302 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 55 transitions. Word has length 30 [2021-11-25 19:07:53,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:07:53,303 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 55 transitions. [2021-11-25 19:07:53,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 13 states have internal predecessors, (16), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-25 19:07:53,303 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 55 transitions. [2021-11-25 19:07:53,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-25 19:07:53,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:07:53,305 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:07:53,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:07:53,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:07:53,522 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:07:53,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:07:53,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1277072068, now seen corresponding path program 1 times [2021-11-25 19:07:53,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:07:53,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093891874] [2021-11-25 19:07:53,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:07:53,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:07:53,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:07:53,574 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:07:53,574 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:07:53,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093891874] [2021-11-25 19:07:53,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093891874] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:07:53,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73098580] [2021-11-25 19:07:53,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:07:53,575 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:07:53,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:07:53,576 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:07:53,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 19:07:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:07:53,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:07:53,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:07:53,738 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:07:53,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:07:53,821 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:07:53,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73098580] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:07:53,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1344990031] [2021-11-25 19:07:53,831 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2021-11-25 19:07:53,831 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:07:53,832 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:07:53,832 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:07:53,832 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:07:53,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:53,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 50 [2021-11-25 19:07:53,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:53,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 23 [2021-11-25 19:07:53,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:53,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 23 [2021-11-25 19:07:53,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:53,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:54,018 INFO L354 Elim1Store]: treesize reduction 58, result has 22.7 percent of original size [2021-11-25 19:07:54,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 347 treesize of output 304 [2021-11-25 19:07:54,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:54,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:54,063 INFO L354 Elim1Store]: treesize reduction 58, result has 22.7 percent of original size [2021-11-25 19:07:54,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 347 treesize of output 304 [2021-11-25 19:07:54,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:54,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:54,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:54,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:54,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 321 treesize of output 290 [2021-11-25 19:07:54,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:54,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:54,125 INFO L354 Elim1Store]: treesize reduction 58, result has 22.7 percent of original size [2021-11-25 19:07:54,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 312 treesize of output 302 [2021-11-25 19:07:54,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 12 [2021-11-25 19:07:54,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 25 [2021-11-25 19:07:54,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 12 [2021-11-25 19:07:54,340 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:07:54,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 19 [2021-11-25 19:07:54,366 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:07:54,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 19 [2021-11-25 19:07:54,399 INFO L354 Elim1Store]: treesize reduction 37, result has 33.9 percent of original size [2021-11-25 19:07:54,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 31 [2021-11-25 19:07:54,547 INFO L197 IcfgInterpreter]: Interpreting procedure g with input of size 36 for LOIs [2021-11-25 19:07:54,575 INFO L197 IcfgInterpreter]: Interpreting procedure f with input of size 55 for LOIs [2021-11-25 19:07:54,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 11 [2021-11-25 19:07:54,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 11 [2021-11-25 19:07:54,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2021-11-25 19:07:54,746 INFO L197 IcfgInterpreter]: Interpreting procedure malloc with input of size 49 for LOIs [2021-11-25 19:07:54,764 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:07:55,819 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '887#(and (= 5 |~#pstate~0.base|) (not (= |g_#t~mem9#1| 1)) (= |g_#in~pointer#1.base| 0) (= |~#pstate~0.offset| 0) (= |g_~i~2#1| 0) (= |#memory_int| |old(#memory_int)|) (not (= |g_#in~pointer#1.offset| 0)) (= |g_~pointer#1.base| (select (select |#memory_$Pointer$.base| |~#pp~0.base|) (+ |~#pp~0.offset| (* |g_~i~2#1| 4)))) (= |g_~pointer#1.offset| (select (select |#memory_$Pointer$.offset| |~#pp~0.base|) (+ |~#pp~0.offset| (* |g_~i~2#1| 4)))) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |g_~pointer#1.offset| |g_#in~pointer#1.offset|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= (select (select |#memory_int| |~#pstate~0.base|) (+ |~#pstate~0.offset| (* |g_~i~2#1| 4))) |g_#t~mem9#1|) (= |~#pp~0.offset| 0) (= |#NULL.offset| 0) (not (= ~counter~0 1)) (= 4 |~#pp~0.base|) (= |g_~pointer#1.base| |g_#in~pointer#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:07:55,819 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:07:55,819 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:07:55,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 5 [2021-11-25 19:07:55,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101956453] [2021-11-25 19:07:55,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:07:55,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:07:55,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:07:55,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:07:55,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2021-11-25 19:07:55,821 INFO L87 Difference]: Start difference. First operand 42 states and 55 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-25 19:07:55,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:07:55,855 INFO L93 Difference]: Finished difference Result 82 states and 108 transitions. [2021-11-25 19:07:55,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:07:55,856 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 31 [2021-11-25 19:07:55,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:07:55,857 INFO L225 Difference]: With dead ends: 82 [2021-11-25 19:07:55,857 INFO L226 Difference]: Without dead ends: 43 [2021-11-25 19:07:55,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 72 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2021-11-25 19:07:55,859 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:07:55,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:07:55,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-25 19:07:55,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-11-25 19:07:55,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 31 states have internal predecessors, (39), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2021-11-25 19:07:55,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 56 transitions. [2021-11-25 19:07:55,874 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 56 transitions. Word has length 31 [2021-11-25 19:07:55,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:07:55,875 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 56 transitions. [2021-11-25 19:07:55,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-25 19:07:55,875 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 56 transitions. [2021-11-25 19:07:55,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-25 19:07:55,877 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:07:55,877 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:07:55,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 19:07:56,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:07:56,081 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:07:56,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:07:56,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1451246862, now seen corresponding path program 2 times [2021-11-25 19:07:56,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:07:56,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577941535] [2021-11-25 19:07:56,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:07:56,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:07:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:07:56,179 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:07:56,179 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:07:56,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577941535] [2021-11-25 19:07:56,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577941535] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:07:56,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151361482] [2021-11-25 19:07:56,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:07:56,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:07:56,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:07:56,195 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:07:56,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 19:07:56,284 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-25 19:07:56,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:07:56,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:07:56,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:07:56,364 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:07:56,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:07:56,415 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:07:56,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151361482] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:07:56,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [282185736] [2021-11-25 19:07:56,424 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2021-11-25 19:07:56,424 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:07:56,424 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:07:56,424 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:07:56,425 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:07:56,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:56,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:56,468 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:07:56,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 28 [2021-11-25 19:07:56,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:56,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:56,484 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:07:56,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 28 [2021-11-25 19:07:56,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:56,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:56,502 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:07:56,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 60 [2021-11-25 19:07:56,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:56,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:56,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:56,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:56,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:56,606 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-25 19:07:56,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 336 treesize of output 312 [2021-11-25 19:07:56,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:56,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:56,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:56,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:56,668 INFO L354 Elim1Store]: treesize reduction 68, result has 22.7 percent of original size [2021-11-25 19:07:56,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 362 treesize of output 329 [2021-11-25 19:07:56,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:56,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:56,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:56,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:56,713 INFO L354 Elim1Store]: treesize reduction 71, result has 19.3 percent of original size [2021-11-25 19:07:56,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 358 treesize of output 322 [2021-11-25 19:07:56,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:56,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:56,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:56,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:56,753 INFO L354 Elim1Store]: treesize reduction 71, result has 19.3 percent of original size [2021-11-25 19:07:56,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 323 treesize of output 320 [2021-11-25 19:07:56,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 12 [2021-11-25 19:07:56,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 25 [2021-11-25 19:07:56,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 12 [2021-11-25 19:07:56,990 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:07:56,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 19 [2021-11-25 19:07:57,013 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:07:57,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 19 [2021-11-25 19:07:57,039 INFO L354 Elim1Store]: treesize reduction 37, result has 33.9 percent of original size [2021-11-25 19:07:57,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 31 [2021-11-25 19:07:57,166 INFO L197 IcfgInterpreter]: Interpreting procedure g with input of size 36 for LOIs [2021-11-25 19:07:57,194 INFO L197 IcfgInterpreter]: Interpreting procedure f with input of size 55 for LOIs [2021-11-25 19:07:57,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 11 [2021-11-25 19:07:57,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 11 [2021-11-25 19:07:57,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2021-11-25 19:07:57,355 INFO L197 IcfgInterpreter]: Interpreting procedure malloc with input of size 49 for LOIs [2021-11-25 19:07:57,373 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:07:58,273 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1277#(and (= 5 |~#pstate~0.base|) (not (= |g_#t~mem9#1| 1)) (= |g_#in~pointer#1.base| 0) (= |~#pstate~0.offset| 0) (= |g_~i~2#1| 0) (= |#memory_int| |old(#memory_int)|) (not (= |g_#in~pointer#1.offset| 0)) (= |g_~pointer#1.base| (select (select |#memory_$Pointer$.base| |~#pp~0.base|) (+ |~#pp~0.offset| (* |g_~i~2#1| 4)))) (= |g_~pointer#1.offset| (select (select |#memory_$Pointer$.offset| |~#pp~0.base|) (+ |~#pp~0.offset| (* |g_~i~2#1| 4)))) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |g_~pointer#1.offset| |g_#in~pointer#1.offset|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= (select (select |#memory_int| |~#pstate~0.base|) (+ |~#pstate~0.offset| (* |g_~i~2#1| 4))) |g_#t~mem9#1|) (= |~#pp~0.offset| 0) (= |#NULL.offset| 0) (not (= ~counter~0 1)) (= 4 |~#pp~0.base|) (= |g_~pointer#1.base| |g_#in~pointer#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:07:58,273 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:07:58,274 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:07:58,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2021-11-25 19:07:58,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86477456] [2021-11-25 19:07:58,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:07:58,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:07:58,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:07:58,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:07:58,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2021-11-25 19:07:58,276 INFO L87 Difference]: Start difference. First operand 43 states and 56 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:07:58,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:07:58,320 INFO L93 Difference]: Finished difference Result 77 states and 103 transitions. [2021-11-25 19:07:58,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:07:58,321 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 32 [2021-11-25 19:07:58,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:07:58,322 INFO L225 Difference]: With dead ends: 77 [2021-11-25 19:07:58,322 INFO L226 Difference]: Without dead ends: 46 [2021-11-25 19:07:58,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 75 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2021-11-25 19:07:58,324 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:07:58,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 74 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:07:58,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-25 19:07:58,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2021-11-25 19:07:58,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 32 states have internal predecessors, (40), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2021-11-25 19:07:58,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 57 transitions. [2021-11-25 19:07:58,338 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 57 transitions. Word has length 32 [2021-11-25 19:07:58,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:07:58,339 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 57 transitions. [2021-11-25 19:07:58,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:07:58,339 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 57 transitions. [2021-11-25 19:07:58,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-25 19:07:58,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:07:58,342 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:07:58,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 19:07:58,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:07:58,542 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:07:58,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:07:58,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1576133721, now seen corresponding path program 1 times [2021-11-25 19:07:58,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:07:58,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322138623] [2021-11-25 19:07:58,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:07:58,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:07:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:07:58,980 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:07:58,980 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:07:58,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322138623] [2021-11-25 19:07:58,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322138623] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:07:58,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119597947] [2021-11-25 19:07:58,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:07:58,981 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:07:58,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:07:58,981 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:07:58,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 19:07:59,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:07:59,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-25 19:07:59,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:07:59,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:07:59,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:07:59,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:59,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:59,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 23 [2021-11-25 19:07:59,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:59,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 22 [2021-11-25 19:07:59,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:07:59,620 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 19:07:59,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:07:59,721 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_428 (Array Int Int)) (v_f_~i~1_52 Int) (v_ArrVal_427 Int)) (or (< v_f_~i~1_52 1) (= (select (store (select (store |c_#memory_int| |c_~#pp~0.base| v_ArrVal_428) |c_~#pstate~0.base|) (+ |c_~#pstate~0.offset| (* v_f_~i~1_52 4)) v_ArrVal_427) |c_~#pstate~0.offset|) 1))) is different from false [2021-11-25 19:07:59,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119597947] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:07:59,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [581356846] [2021-11-25 19:07:59,725 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2021-11-25 19:07:59,725 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:07:59,726 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:07:59,726 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:07:59,726 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:07:59,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:59,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 50 [2021-11-25 19:07:59,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:59,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 23 [2021-11-25 19:07:59,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:59,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 23 [2021-11-25 19:07:59,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:59,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:59,949 INFO L354 Elim1Store]: treesize reduction 58, result has 22.7 percent of original size [2021-11-25 19:07:59,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 347 treesize of output 304 [2021-11-25 19:07:59,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:59,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:59,996 INFO L354 Elim1Store]: treesize reduction 58, result has 22.7 percent of original size [2021-11-25 19:07:59,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 347 treesize of output 304 [2021-11-25 19:08:00,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:00,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:00,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:00,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:00,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 321 treesize of output 290 [2021-11-25 19:08:00,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:00,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:00,059 INFO L354 Elim1Store]: treesize reduction 58, result has 22.7 percent of original size [2021-11-25 19:08:00,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 312 treesize of output 302 [2021-11-25 19:08:00,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 12 [2021-11-25 19:08:00,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 25 [2021-11-25 19:08:00,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 12 [2021-11-25 19:08:00,242 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:08:00,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 19 [2021-11-25 19:08:00,264 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:08:00,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 19 [2021-11-25 19:08:00,290 INFO L354 Elim1Store]: treesize reduction 37, result has 33.9 percent of original size [2021-11-25 19:08:00,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 31 [2021-11-25 19:08:00,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:08:00,466 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:08:00,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:08:00,567 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:08:00,705 INFO L197 IcfgInterpreter]: Interpreting procedure g with input of size 59 for LOIs [2021-11-25 19:08:00,763 INFO L197 IcfgInterpreter]: Interpreting procedure f with input of size 20 for LOIs [2021-11-25 19:08:00,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:00,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2021-11-25 19:08:00,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:00,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 11 [2021-11-25 19:08:00,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:00,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 11 [2021-11-25 19:08:00,869 INFO L197 IcfgInterpreter]: Interpreting procedure malloc with input of size 49 for LOIs [2021-11-25 19:08:00,886 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:08:02,947 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1613#(and (not (= |g_#t~mem9#1| 1)) (= |g_#in~pointer#1.base| 0) (= |g_~i~2#1| 0) (= |#memory_int| |old(#memory_int)|) (not (= |g_#in~pointer#1.offset| 0)) (= |g_~pointer#1.base| (select (select |#memory_$Pointer$.base| |~#pp~0.base|) (+ |~#pp~0.offset| (* |g_~i~2#1| 4)))) (= |g_~pointer#1.offset| (select (select |#memory_$Pointer$.offset| |~#pp~0.base|) (+ |~#pp~0.offset| (* |g_~i~2#1| 4)))) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |g_~pointer#1.offset| |g_#in~pointer#1.offset|) (<= |#NULL.offset| 0) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= (select (select |old(#memory_int)| |~#pstate~0.base|) (+ |~#pstate~0.offset| 4)) 1) (= (select (select |#memory_int| |~#pstate~0.base|) (+ |~#pstate~0.offset| (* |g_~i~2#1| 4))) |g_#t~mem9#1|) (<= |~#pp~0.base| 4) (<= 5 |~#pstate~0.base|) (<= |~#pstate~0.base| 5) (= |~#pp~0.offset| 0) (<= 0 |~#pstate~0.offset|) (<= |~#pstate~0.offset| 0) (not (= ~counter~0 1)) (<= 0 |#NULL.offset|) (= |g_~pointer#1.base| |g_#in~pointer#1.base|) (<= 4 |~#pp~0.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:08:02,947 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:08:02,947 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:08:02,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2021-11-25 19:08:02,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895176146] [2021-11-25 19:08:02,948 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:08:02,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-25 19:08:02,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:08:02,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-25 19:08:02,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1669, Unknown=12, NotChecked=84, Total=1980 [2021-11-25 19:08:02,950 INFO L87 Difference]: Start difference. First operand 44 states and 57 transitions. Second operand has 23 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 18 states have internal predecessors, (43), 6 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-25 19:08:03,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:08:03,827 INFO L93 Difference]: Finished difference Result 128 states and 164 transitions. [2021-11-25 19:08:03,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-25 19:08:03,828 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 18 states have internal predecessors, (43), 6 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 33 [2021-11-25 19:08:03,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:08:03,829 INFO L225 Difference]: With dead ends: 128 [2021-11-25 19:08:03,829 INFO L226 Difference]: Without dead ends: 117 [2021-11-25 19:08:03,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1088 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=456, Invalid=3302, Unknown=28, NotChecked=120, Total=3906 [2021-11-25 19:08:03,833 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 185 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 100 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:08:03,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 233 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 434 Invalid, 0 Unknown, 100 Unchecked, 0.4s Time] [2021-11-25 19:08:03,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-11-25 19:08:03,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 80. [2021-11-25 19:08:03,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 57 states have (on average 1.3859649122807018) internal successors, (79), 61 states have internal predecessors, (79), 12 states have call successors, (12), 7 states have call predecessors, (12), 10 states have return successors, (14), 11 states have call predecessors, (14), 8 states have call successors, (14) [2021-11-25 19:08:03,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 105 transitions. [2021-11-25 19:08:03,873 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 105 transitions. Word has length 33 [2021-11-25 19:08:03,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:08:03,874 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 105 transitions. [2021-11-25 19:08:03,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 18 states have internal predecessors, (43), 6 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-25 19:08:03,874 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 105 transitions. [2021-11-25 19:08:03,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-25 19:08:03,875 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:08:03,876 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:08:03,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 19:08:04,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:08:04,083 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:08:04,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:08:04,084 INFO L85 PathProgramCache]: Analyzing trace with hash -243552641, now seen corresponding path program 1 times [2021-11-25 19:08:04,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:08:04,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090672480] [2021-11-25 19:08:04,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:08:04,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:08:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:08:04,406 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:08:04,406 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:08:04,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090672480] [2021-11-25 19:08:04,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090672480] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:08:04,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029843427] [2021-11-25 19:08:04,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:08:04,407 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:08:04,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:08:04,411 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:08:04,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 19:08:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:08:04,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-25 19:08:04,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:08:04,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-11-25 19:08:04,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:04,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 19:08:04,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:08:05,097 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 19:08:05,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:08:05,327 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:08:05,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2021-11-25 19:08:05,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2021-11-25 19:08:05,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-25 19:08:05,419 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:08:05,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-11-25 19:08:05,422 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:08:05,427 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:08:05,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-11-25 19:08:05,659 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 19:08:05,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029843427] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:08:05,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1901366650] [2021-11-25 19:08:05,662 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2021-11-25 19:08:05,662 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:08:05,662 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:08:05,663 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:08:05,663 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:08:05,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:05,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:05,703 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:08:05,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 28 [2021-11-25 19:08:05,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:05,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:05,713 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:08:05,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 28 [2021-11-25 19:08:05,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:05,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:05,730 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:08:05,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 60 [2021-11-25 19:08:05,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:05,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:05,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:05,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:05,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:05,829 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-25 19:08:05,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 336 treesize of output 312 [2021-11-25 19:08:05,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:05,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:05,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:05,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:05,912 INFO L354 Elim1Store]: treesize reduction 68, result has 22.7 percent of original size [2021-11-25 19:08:05,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 327 treesize of output 327 [2021-11-25 19:08:05,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:05,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:05,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:05,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:05,964 INFO L354 Elim1Store]: treesize reduction 68, result has 22.7 percent of original size [2021-11-25 19:08:05,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 358 treesize of output 325 [2021-11-25 19:08:05,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:05,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:05,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:05,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:06,006 INFO L354 Elim1Store]: treesize reduction 71, result has 19.3 percent of original size [2021-11-25 19:08:06,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 354 treesize of output 318 [2021-11-25 19:08:06,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 12 [2021-11-25 19:08:06,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 25 [2021-11-25 19:08:06,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 12 [2021-11-25 19:08:06,360 INFO L354 Elim1Store]: treesize reduction 37, result has 33.9 percent of original size [2021-11-25 19:08:06,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 31 [2021-11-25 19:08:06,380 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:08:06,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 23 [2021-11-25 19:08:06,399 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:08:06,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 23 [2021-11-25 19:08:06,543 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:08:06,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:08:06,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:08:06,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:08:06,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:08:06,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:08:06,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:08:06,684 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:08:06,826 INFO L197 IcfgInterpreter]: Interpreting procedure g with input of size 67 for LOIs [2021-11-25 19:08:07,002 INFO L197 IcfgInterpreter]: Interpreting procedure f with input of size 20 for LOIs [2021-11-25 19:08:07,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 15 [2021-11-25 19:08:07,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 15 [2021-11-25 19:08:07,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2021-11-25 19:08:07,046 INFO L197 IcfgInterpreter]: Interpreting procedure malloc with input of size 49 for LOIs [2021-11-25 19:08:07,062 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:08:09,363 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2194#(and (= 5 |~#pstate~0.base|) (or (and (<= 0 |g_~pointer#1.base|) (<= |g_~i~2#1| 2) (<= 1 |g_~i~2#1|) (<= |g_~pointer#1.base| 0) (<= 0 |#StackHeapBarrier|)) (and (<= 0 |g_~pointer#1.base|) (<= 0 |g_~i~2#1|) (<= |g_~pointer#1.base| 0) (<= |g_~i~2#1| 0) (<= 0 |#StackHeapBarrier|))) (not (= |g_#t~mem9#1| 1)) (= |g_#in~pointer#1.base| 0) (= |~#pstate~0.offset| 0) (= (select (select |#memory_int| |~#pstate~0.base|) (+ |~#pstate~0.offset| (* |g_~i~2#1| 4))) |g_#t~mem9#1|) (= |~#pp~0.offset| 0) (= |#NULL.offset| 0) (= 4 |~#pp~0.base|) (= |#NULL.base| 0))' at error location [2021-11-25 19:08:09,363 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:08:09,363 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:08:09,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 40 [2021-11-25 19:08:09,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593744874] [2021-11-25 19:08:09,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:08:09,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-25 19:08:09,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:08:09,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-25 19:08:09,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=3247, Unknown=0, NotChecked=0, Total=3540 [2021-11-25 19:08:09,367 INFO L87 Difference]: Start difference. First operand 80 states and 105 transitions. Second operand has 40 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 29 states have internal predecessors, (54), 11 states have call successors, (13), 8 states have call predecessors, (13), 11 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2021-11-25 19:08:10,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:08:10,788 INFO L93 Difference]: Finished difference Result 144 states and 182 transitions. [2021-11-25 19:08:10,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-25 19:08:10,789 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 29 states have internal predecessors, (54), 11 states have call successors, (13), 8 states have call predecessors, (13), 11 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) Word has length 34 [2021-11-25 19:08:10,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:08:10,791 INFO L225 Difference]: With dead ends: 144 [2021-11-25 19:08:10,791 INFO L226 Difference]: Without dead ends: 117 [2021-11-25 19:08:10,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1514 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=544, Invalid=5308, Unknown=0, NotChecked=0, Total=5852 [2021-11-25 19:08:10,794 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 172 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:08:10,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 55 Invalid, 1286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 19:08:10,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-11-25 19:08:10,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 80. [2021-11-25 19:08:10,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 57 states have (on average 1.368421052631579) internal successors, (78), 60 states have internal predecessors, (78), 12 states have call successors, (12), 8 states have call predecessors, (12), 10 states have return successors, (13), 11 states have call predecessors, (13), 8 states have call successors, (13) [2021-11-25 19:08:10,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 103 transitions. [2021-11-25 19:08:10,810 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 103 transitions. Word has length 34 [2021-11-25 19:08:10,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:08:10,811 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 103 transitions. [2021-11-25 19:08:10,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 29 states have internal predecessors, (54), 11 states have call successors, (13), 8 states have call predecessors, (13), 11 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2021-11-25 19:08:10,811 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 103 transitions. [2021-11-25 19:08:10,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-25 19:08:10,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:08:10,813 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:08:10,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 19:08:11,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:08:11,027 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:08:11,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:08:11,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1661703869, now seen corresponding path program 2 times [2021-11-25 19:08:11,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:08:11,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875564742] [2021-11-25 19:08:11,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:08:11,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:08:11,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:08:11,913 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:08:11,914 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:08:11,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875564742] [2021-11-25 19:08:11,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875564742] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:08:11,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463849597] [2021-11-25 19:08:11,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:08:11,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:08:11,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:08:11,915 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:08:11,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 19:08:12,037 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-25 19:08:12,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:08:12,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 94 conjunts are in the unsatisfiable core [2021-11-25 19:08:12,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:08:12,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2021-11-25 19:08:12,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:12,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2021-11-25 19:08:12,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:12,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-25 19:08:12,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:12,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 19:08:12,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:08:12,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-25 19:08:12,894 INFO L354 Elim1Store]: treesize reduction 19, result has 40.6 percent of original size [2021-11-25 19:08:12,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 34 [2021-11-25 19:08:12,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:12,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 31 [2021-11-25 19:08:13,057 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:08:13,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2021-11-25 19:08:13,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-11-25 19:08:13,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:13,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:13,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 25 [2021-11-25 19:08:13,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:13,456 INFO L354 Elim1Store]: treesize reduction 39, result has 30.4 percent of original size [2021-11-25 19:08:13,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 52 [2021-11-25 19:08:13,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:13,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 44 [2021-11-25 19:08:13,480 INFO L354 Elim1Store]: treesize reduction 27, result has 38.6 percent of original size [2021-11-25 19:08:13,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 30 [2021-11-25 19:08:13,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:13,764 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:08:13,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-11-25 19:08:13,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:08:13,869 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:08:13,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:08:14,128 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_723 (Array Int Int)) (v_ArrVal_722 Int)) (= (select (store (select (store |c_#memory_int| |c_~#pp~0.base| v_ArrVal_723) |c_~#pstate~0.base|) (+ |c_~#pstate~0.offset| 4) v_ArrVal_722) |c_~#pstate~0.offset|) 1)) (forall ((v_ArrVal_724 (Array Int Int))) (not (= (select (select (store (store |c_#memory_$Pointer$.offset| |c_~#pp~0.base| (store (select |c_#memory_$Pointer$.offset| |c_~#pp~0.base|) (+ |c_~#pp~0.offset| 4) |c_ULTIMATE.start_main_~b~0#1.offset|)) |c_~#pstate~0.base| v_ArrVal_724) |c_~#pp~0.base|) |c_~#pp~0.offset|) |c_ULTIMATE.start_main_~a~0#1.offset|)))) is different from false [2021-11-25 19:08:14,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463849597] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:08:14,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1345577419] [2021-11-25 19:08:14,131 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2021-11-25 19:08:14,132 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:08:14,132 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:08:14,132 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:08:14,133 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:08:14,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:14,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:14,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:08:14,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 28 [2021-11-25 19:08:14,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:14,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:14,183 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:08:14,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 60 [2021-11-25 19:08:14,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:14,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:14,197 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:08:14,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 28 [2021-11-25 19:08:14,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:14,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:14,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:14,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:14,327 INFO L354 Elim1Store]: treesize reduction 68, result has 22.7 percent of original size [2021-11-25 19:08:14,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 362 treesize of output 329 [2021-11-25 19:08:14,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:14,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:14,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:14,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:14,380 INFO L354 Elim1Store]: treesize reduction 68, result has 22.7 percent of original size [2021-11-25 19:08:14,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 358 treesize of output 325 [2021-11-25 19:08:14,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:14,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:14,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:14,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:14,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:14,407 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-25 19:08:14,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 328 treesize of output 304 [2021-11-25 19:08:14,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:14,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:14,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:14,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:14,463 INFO L354 Elim1Store]: treesize reduction 71, result has 19.3 percent of original size [2021-11-25 19:08:14,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 319 treesize of output 316 [2021-11-25 19:08:14,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 25 [2021-11-25 19:08:14,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 12 [2021-11-25 19:08:14,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 12 [2021-11-25 19:08:14,782 INFO L354 Elim1Store]: treesize reduction 37, result has 33.9 percent of original size [2021-11-25 19:08:14,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 31 [2021-11-25 19:08:14,799 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:08:14,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 19 [2021-11-25 19:08:14,819 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:08:14,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 19 [2021-11-25 19:08:14,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:08:14,946 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:08:15,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:08:15,075 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:08:15,214 INFO L197 IcfgInterpreter]: Interpreting procedure g with input of size 59 for LOIs [2021-11-25 19:08:15,274 INFO L197 IcfgInterpreter]: Interpreting procedure f with input of size 20 for LOIs [2021-11-25 19:08:15,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:15,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2021-11-25 19:08:15,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:15,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 11 [2021-11-25 19:08:15,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:15,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 11 [2021-11-25 19:08:15,376 INFO L197 IcfgInterpreter]: Interpreting procedure malloc with input of size 49 for LOIs [2021-11-25 19:08:15,400 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:08:17,834 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2740#(and (not (= |g_#t~mem9#1| 1)) (= |g_#in~pointer#1.base| 0) (= |g_~i~2#1| 0) (= |#memory_int| |old(#memory_int)|) (not (= |g_#in~pointer#1.offset| 0)) (= |g_~pointer#1.base| (select (select |#memory_$Pointer$.base| |~#pp~0.base|) (+ |~#pp~0.offset| (* |g_~i~2#1| 4)))) (= |g_~pointer#1.offset| (select (select |#memory_$Pointer$.offset| |~#pp~0.base|) (+ |~#pp~0.offset| (* |g_~i~2#1| 4)))) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |g_~pointer#1.offset| |g_#in~pointer#1.offset|) (<= |#NULL.offset| 0) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= (select (select |old(#memory_int)| |~#pstate~0.base|) (+ |~#pstate~0.offset| 4)) 1) (= (select (select |#memory_int| |~#pstate~0.base|) (+ |~#pstate~0.offset| (* |g_~i~2#1| 4))) |g_#t~mem9#1|) (<= |~#pp~0.base| 4) (<= 5 |~#pstate~0.base|) (<= |~#pstate~0.base| 5) (= |~#pp~0.offset| 0) (<= 0 |~#pstate~0.offset|) (<= |~#pstate~0.offset| 0) (not (= ~counter~0 1)) (<= 0 |#NULL.offset|) (= |g_~pointer#1.base| |g_#in~pointer#1.base|) (<= 4 |~#pp~0.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:08:17,834 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:08:17,834 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:08:17,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2021-11-25 19:08:17,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572744925] [2021-11-25 19:08:17,835 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:08:17,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-11-25 19:08:17,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:08:17,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-11-25 19:08:17,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=4537, Unknown=48, NotChecked=136, Total=4970 [2021-11-25 19:08:17,838 INFO L87 Difference]: Start difference. First operand 80 states and 103 transitions. Second operand has 47 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 34 states have internal predecessors, (50), 9 states have call successors, (10), 8 states have call predecessors, (10), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-25 19:08:22,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:08:22,968 INFO L93 Difference]: Finished difference Result 213 states and 277 transitions. [2021-11-25 19:08:22,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-25 19:08:22,968 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 34 states have internal predecessors, (50), 9 states have call successors, (10), 8 states have call predecessors, (10), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Word has length 35 [2021-11-25 19:08:22,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:08:22,971 INFO L225 Difference]: With dead ends: 213 [2021-11-25 19:08:22,971 INFO L226 Difference]: Without dead ends: 196 [2021-11-25 19:08:22,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4063 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=877, Invalid=13791, Unknown=98, NotChecked=240, Total=15006 [2021-11-25 19:08:22,980 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 269 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 2048 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 2628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 2048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 401 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:08:22,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 411 Invalid, 2628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 2048 Invalid, 0 Unknown, 401 Unchecked, 1.5s Time] [2021-11-25 19:08:22,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-11-25 19:08:23,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 125. [2021-11-25 19:08:23,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 92 states have (on average 1.3695652173913044) internal successors, (126), 95 states have internal predecessors, (126), 17 states have call successors, (17), 13 states have call predecessors, (17), 15 states have return successors, (21), 16 states have call predecessors, (21), 11 states have call successors, (21) [2021-11-25 19:08:23,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 164 transitions. [2021-11-25 19:08:23,028 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 164 transitions. Word has length 35 [2021-11-25 19:08:23,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:08:23,030 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 164 transitions. [2021-11-25 19:08:23,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 34 states have internal predecessors, (50), 9 states have call successors, (10), 8 states have call predecessors, (10), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-25 19:08:23,030 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 164 transitions. [2021-11-25 19:08:23,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 19:08:23,040 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:08:23,040 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:08:23,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 19:08:23,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-25 19:08:23,255 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:08:23,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:08:23,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1398740067, now seen corresponding path program 1 times [2021-11-25 19:08:23,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:08:23,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457809276] [2021-11-25 19:08:23,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:08:23,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:08:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:08:23,584 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 19:08:23,585 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:08:23,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457809276] [2021-11-25 19:08:23,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457809276] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:08:23,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711521255] [2021-11-25 19:08:23,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:08:23,585 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:08:23,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:08:23,587 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:08:23,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 19:08:23,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:08:23,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-25 19:08:23,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:08:23,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:08:23,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:08:24,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:24,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:24,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 25 [2021-11-25 19:08:24,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:24,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 24 [2021-11-25 19:08:24,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:08:24,233 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 19:08:24,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:08:24,308 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_863 Int) (v_ArrVal_864 (Array Int Int)) (v_f_~i~1_80 Int)) (or (< 0 v_f_~i~1_80) (= (select (store (select (store |c_#memory_int| |c_~#pp~0.base| v_ArrVal_864) |c_~#pstate~0.base|) (+ |c_~#pstate~0.offset| (* v_f_~i~1_80 4)) v_ArrVal_863) (+ |c_~#pstate~0.offset| 4)) 1))) is different from false [2021-11-25 19:08:24,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711521255] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:08:24,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [345033744] [2021-11-25 19:08:24,311 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2021-11-25 19:08:24,311 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:08:24,312 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:08:24,312 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:08:24,312 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:08:24,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:24,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 23 [2021-11-25 19:08:24,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:24,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 50 [2021-11-25 19:08:24,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:24,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 23 [2021-11-25 19:08:24,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:24,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:24,459 INFO L354 Elim1Store]: treesize reduction 58, result has 22.7 percent of original size [2021-11-25 19:08:24,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 347 treesize of output 304 [2021-11-25 19:08:24,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:24,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:24,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:24,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:24,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 321 treesize of output 290 [2021-11-25 19:08:24,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:24,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:24,560 INFO L354 Elim1Store]: treesize reduction 58, result has 22.7 percent of original size [2021-11-25 19:08:24,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 347 treesize of output 304 [2021-11-25 19:08:24,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:24,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:24,589 INFO L354 Elim1Store]: treesize reduction 58, result has 22.7 percent of original size [2021-11-25 19:08:24,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 312 treesize of output 302 [2021-11-25 19:08:24,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 25 [2021-11-25 19:08:24,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 12 [2021-11-25 19:08:24,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 12 [2021-11-25 19:08:24,741 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:08:24,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 19 [2021-11-25 19:08:24,758 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:08:24,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 19 [2021-11-25 19:08:24,779 INFO L354 Elim1Store]: treesize reduction 37, result has 33.9 percent of original size [2021-11-25 19:08:24,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 31 [2021-11-25 19:08:24,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-11-25 19:08:24,968 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:08:25,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-11-25 19:08:25,096 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:08:25,246 INFO L197 IcfgInterpreter]: Interpreting procedure g with input of size 70 for LOIs [2021-11-25 19:08:25,507 INFO L197 IcfgInterpreter]: Interpreting procedure f with input of size 20 for LOIs [2021-11-25 19:08:25,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:25,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2021-11-25 19:08:25,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:25,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 11 [2021-11-25 19:08:25,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:25,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 11 [2021-11-25 19:08:25,614 INFO L197 IcfgInterpreter]: Interpreting procedure malloc with input of size 49 for LOIs [2021-11-25 19:08:25,630 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:08:27,455 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3497#(and (= 5 |~#pstate~0.base|) (not (= |g_#t~mem9#1| 1)) (= |g_#in~pointer#1.base| 0) (<= 0 |g_~pointer#1.base|) (<= |g_~i~2#1| 2) (<= 0 |g_~i~2#1|) (= (select (select |#memory_int| |~#pstate~0.base|) (+ |~#pstate~0.offset| (* |g_~i~2#1| 4))) |g_#t~mem9#1|) (= |~#pp~0.offset| 0) (= |#NULL.offset| 0) (<= |g_~pointer#1.base| 0) (<= 0 |~#pstate~0.offset|) (<= |~#pstate~0.offset| 0) (= 4 |~#pp~0.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:08:27,455 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:08:27,455 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:08:27,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 26 [2021-11-25 19:08:27,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017183798] [2021-11-25 19:08:27,456 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:08:27,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-25 19:08:27,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:08:27,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-25 19:08:27,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=1949, Unknown=8, NotChecked=90, Total=2256 [2021-11-25 19:08:27,458 INFO L87 Difference]: Start difference. First operand 125 states and 164 transitions. Second operand has 26 states, 25 states have (on average 1.92) internal successors, (48), 21 states have internal predecessors, (48), 6 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-25 19:08:29,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:08:29,632 INFO L93 Difference]: Finished difference Result 324 states and 422 transitions. [2021-11-25 19:08:29,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-25 19:08:29,634 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.92) internal successors, (48), 21 states have internal predecessors, (48), 6 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 36 [2021-11-25 19:08:29,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:08:29,636 INFO L225 Difference]: With dead ends: 324 [2021-11-25 19:08:29,636 INFO L226 Difference]: Without dead ends: 299 [2021-11-25 19:08:29,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 100 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3365 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1126, Invalid=8941, Unknown=37, NotChecked=198, Total=10302 [2021-11-25 19:08:29,640 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 366 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 96 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:08:29,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 411 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 556 Invalid, 0 Unknown, 96 Unchecked, 0.5s Time] [2021-11-25 19:08:29,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-11-25 19:08:29,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 196. [2021-11-25 19:08:29,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 154 states have (on average 1.3896103896103895) internal successors, (214), 157 states have internal predecessors, (214), 22 states have call successors, (22), 17 states have call predecessors, (22), 19 states have return successors, (24), 21 states have call predecessors, (24), 12 states have call successors, (24) [2021-11-25 19:08:29,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 260 transitions. [2021-11-25 19:08:29,670 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 260 transitions. Word has length 36 [2021-11-25 19:08:29,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:08:29,671 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 260 transitions. [2021-11-25 19:08:29,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.92) internal successors, (48), 21 states have internal predecessors, (48), 6 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-25 19:08:29,671 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 260 transitions. [2021-11-25 19:08:29,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 19:08:29,672 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:08:29,673 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:08:29,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-25 19:08:29,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-25 19:08:29,883 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:08:29,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:08:29,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1606500573, now seen corresponding path program 2 times [2021-11-25 19:08:29,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:08:29,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143710219] [2021-11-25 19:08:29,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:08:29,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:08:29,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:08:30,348 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 19:08:30,348 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:08:30,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143710219] [2021-11-25 19:08:30,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143710219] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:08:30,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292828756] [2021-11-25 19:08:30,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:08:30,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:08:30,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:08:30,350 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:08:30,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-25 19:08:30,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-25 19:08:30,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:08:30,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-25 19:08:30,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:08:30,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:08:30,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-25 19:08:30,678 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:08:30,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:08:30,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-25 19:08:30,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-25 19:08:30,809 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:08:30,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292828756] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:08:30,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1132311994] [2021-11-25 19:08:30,811 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2021-11-25 19:08:30,811 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:08:30,812 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:08:30,812 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:08:30,812 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:08:30,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:30,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:30,849 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:08:30,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 28 [2021-11-25 19:08:30,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:30,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:30,872 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:08:30,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 28 [2021-11-25 19:08:30,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:30,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:30,883 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:08:30,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 60 [2021-11-25 19:08:30,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:30,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:30,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:30,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:31,017 INFO L354 Elim1Store]: treesize reduction 68, result has 22.7 percent of original size [2021-11-25 19:08:31,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 362 treesize of output 329 [2021-11-25 19:08:31,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:31,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:31,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:31,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:31,064 INFO L354 Elim1Store]: treesize reduction 68, result has 22.7 percent of original size [2021-11-25 19:08:31,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 358 treesize of output 325 [2021-11-25 19:08:31,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:31,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:31,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:31,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:31,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:31,097 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-25 19:08:31,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 328 treesize of output 304 [2021-11-25 19:08:31,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:31,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:31,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:31,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:31,140 INFO L354 Elim1Store]: treesize reduction 68, result has 22.7 percent of original size [2021-11-25 19:08:31,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 319 treesize of output 319 [2021-11-25 19:08:31,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 12 [2021-11-25 19:08:31,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 25 [2021-11-25 19:08:31,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 12 [2021-11-25 19:08:31,354 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:08:31,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 19 [2021-11-25 19:08:31,377 INFO L354 Elim1Store]: treesize reduction 37, result has 33.9 percent of original size [2021-11-25 19:08:31,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 31 [2021-11-25 19:08:31,401 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:08:31,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 19 [2021-11-25 19:08:31,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-11-25 19:08:31,558 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:08:31,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-11-25 19:08:31,669 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:08:31,814 INFO L197 IcfgInterpreter]: Interpreting procedure g with input of size 70 for LOIs [2021-11-25 19:08:32,052 INFO L197 IcfgInterpreter]: Interpreting procedure f with input of size 20 for LOIs [2021-11-25 19:08:32,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:32,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2021-11-25 19:08:32,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:32,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 11 [2021-11-25 19:08:32,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:32,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 11 [2021-11-25 19:08:32,130 INFO L197 IcfgInterpreter]: Interpreting procedure malloc with input of size 49 for LOIs [2021-11-25 19:08:32,142 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:08:33,909 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4568#(and (= 5 |~#pstate~0.base|) (not (= |g_#t~mem9#1| 1)) (= |g_#in~pointer#1.base| 0) (<= 0 |g_~pointer#1.base|) (<= |g_~i~2#1| 2) (<= 0 |g_~i~2#1|) (= (select (select |#memory_int| |~#pstate~0.base|) (+ |~#pstate~0.offset| (* |g_~i~2#1| 4))) |g_#t~mem9#1|) (= |~#pp~0.offset| 0) (= |#NULL.offset| 0) (<= |g_~pointer#1.base| 0) (<= 0 |~#pstate~0.offset|) (<= |~#pstate~0.offset| 0) (= 4 |~#pp~0.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:08:33,909 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:08:33,910 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:08:33,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 8, 8] total 27 [2021-11-25 19:08:33,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113715495] [2021-11-25 19:08:33,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:08:33,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-25 19:08:33,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:08:33,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-25 19:08:33,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1954, Unknown=0, NotChecked=0, Total=2070 [2021-11-25 19:08:33,912 INFO L87 Difference]: Start difference. First operand 196 states and 260 transitions. Second operand has 27 states, 23 states have (on average 2.260869565217391) internal successors, (52), 22 states have internal predecessors, (52), 6 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-25 19:08:35,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:08:35,343 INFO L93 Difference]: Finished difference Result 333 states and 443 transitions. [2021-11-25 19:08:35,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-25 19:08:35,343 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 2.260869565217391) internal successors, (52), 22 states have internal predecessors, (52), 6 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 36 [2021-11-25 19:08:35,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:08:35,346 INFO L225 Difference]: With dead ends: 333 [2021-11-25 19:08:35,346 INFO L226 Difference]: Without dead ends: 300 [2021-11-25 19:08:35,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 83 SyntacticMatches, 3 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=297, Invalid=4395, Unknown=0, NotChecked=0, Total=4692 [2021-11-25 19:08:35,349 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 88 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1471 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:08:35,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 76 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1471 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 19:08:35,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-11-25 19:08:35,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 231. [2021-11-25 19:08:35,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 183 states have (on average 1.3715846994535519) internal successors, (251), 188 states have internal predecessors, (251), 24 states have call successors, (24), 19 states have call predecessors, (24), 23 states have return successors, (29), 23 states have call predecessors, (29), 13 states have call successors, (29) [2021-11-25 19:08:35,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 304 transitions. [2021-11-25 19:08:35,385 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 304 transitions. Word has length 36 [2021-11-25 19:08:35,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:08:35,385 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 304 transitions. [2021-11-25 19:08:35,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 2.260869565217391) internal successors, (52), 22 states have internal predecessors, (52), 6 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-25 19:08:35,386 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 304 transitions. [2021-11-25 19:08:35,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-25 19:08:35,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:08:35,387 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:08:35,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-25 19:08:35,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:08:35,603 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:08:35,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:08:35,604 INFO L85 PathProgramCache]: Analyzing trace with hash 545317590, now seen corresponding path program 1 times [2021-11-25 19:08:35,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:08:35,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701101742] [2021-11-25 19:08:35,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:08:35,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:08:35,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:08:35,825 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:08:35,825 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:08:35,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701101742] [2021-11-25 19:08:35,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701101742] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:08:35,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523064209] [2021-11-25 19:08:35,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:08:35,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:08:35,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:08:35,827 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:08:35,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-25 19:08:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:08:35,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-25 19:08:35,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:08:36,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-25 19:08:36,155 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:08:36,286 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:08:36,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:08:36,544 INFO L354 Elim1Store]: treesize reduction 7, result has 41.7 percent of original size [2021-11-25 19:08:36,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 25 [2021-11-25 19:08:36,549 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-25 19:08:36,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2021-11-25 19:08:36,573 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:08:36,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523064209] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:08:36,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [417957105] [2021-11-25 19:08:36,576 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2021-11-25 19:08:36,576 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:08:36,576 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:08:36,576 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:08:36,577 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:08:36,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:36,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:36,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:08:36,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 60 [2021-11-25 19:08:36,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:36,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:36,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:08:36,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 28 [2021-11-25 19:08:36,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:36,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:36,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:08:36,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 28 [2021-11-25 19:08:36,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:36,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:36,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:36,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:36,734 INFO L354 Elim1Store]: treesize reduction 68, result has 22.7 percent of original size [2021-11-25 19:08:36,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 362 treesize of output 329 [2021-11-25 19:08:36,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:36,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:36,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:36,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:36,794 INFO L354 Elim1Store]: treesize reduction 71, result has 19.3 percent of original size [2021-11-25 19:08:36,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 358 treesize of output 322 [2021-11-25 19:08:36,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:36,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:36,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:36,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:36,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:36,826 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-25 19:08:36,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 332 treesize of output 308 [2021-11-25 19:08:36,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:36,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:36,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:36,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:36,866 INFO L354 Elim1Store]: treesize reduction 68, result has 22.7 percent of original size [2021-11-25 19:08:36,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 323 treesize of output 323 [2021-11-25 19:08:37,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 25 [2021-11-25 19:08:37,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 12 [2021-11-25 19:08:37,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 12 [2021-11-25 19:08:37,152 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:08:37,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 19 [2021-11-25 19:08:37,170 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:08:37,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 19 [2021-11-25 19:08:37,191 INFO L354 Elim1Store]: treesize reduction 37, result has 33.9 percent of original size [2021-11-25 19:08:37,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 31 [2021-11-25 19:08:37,301 INFO L197 IcfgInterpreter]: Interpreting procedure g with input of size 36 for LOIs [2021-11-25 19:08:37,440 INFO L197 IcfgInterpreter]: Interpreting procedure f with input of size 55 for LOIs [2021-11-25 19:08:37,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 11 [2021-11-25 19:08:37,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2021-11-25 19:08:37,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 11 [2021-11-25 19:08:37,558 INFO L197 IcfgInterpreter]: Interpreting procedure malloc with input of size 49 for LOIs [2021-11-25 19:08:37,571 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:08:39,262 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5661#(and (not (= |g_#t~mem9#1| 1)) (= (select (select |#memory_int| |~#pstate~0.base|) (+ |~#pstate~0.offset| (* |g_~i~2#1| 4))) |g_#t~mem9#1|) (or (and (= 5 |~#pstate~0.base|) (= |g_#in~pointer#1.base| 0) (= |~#pstate~0.offset| 0) (= |g_~i~2#1| 0) (= |#memory_int| |old(#memory_int)|) (not (= |g_#in~pointer#1.offset| 0)) (= |g_~pointer#1.base| (select (select |#memory_$Pointer$.base| |~#pp~0.base|) (+ |~#pp~0.offset| (* |g_~i~2#1| 4)))) (= |g_~pointer#1.offset| (select (select |#memory_$Pointer$.offset| |~#pp~0.base|) (+ |~#pp~0.offset| (* |g_~i~2#1| 4)))) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |g_~pointer#1.offset| |g_#in~pointer#1.offset|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |~#pp~0.offset| 0) (= |#NULL.offset| 0) (not (= ~counter~0 1)) (= 4 |~#pp~0.base|) (= |g_~pointer#1.base| |g_#in~pointer#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) (and (= 5 |~#pstate~0.base|) (< |g_~i~2#1| 2) (= |g_#in~pointer#1.base| 0) (= |~#pstate~0.offset| 0) (= |g_~pointer#1.base| (select (select |#memory_$Pointer$.base| |~#pp~0.base|) (+ |~#pp~0.offset| (* |g_~i~2#1| 4)))) (<= 0 |g_~pointer#1.base|) (= |g_~pointer#1.offset| (select (select |#memory_$Pointer$.offset| |~#pp~0.base|) (+ |~#pp~0.offset| (* |g_~i~2#1| 4)))) (<= 1 |g_~i~2#1|) (= |~#pp~0.offset| 0) (= |#NULL.offset| 0) (<= |g_~pointer#1.base| 0) (= 4 |~#pp~0.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))))' at error location [2021-11-25 19:08:39,262 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:08:39,262 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:08:39,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 23 [2021-11-25 19:08:39,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830202562] [2021-11-25 19:08:39,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:08:39,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-25 19:08:39,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:08:39,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-25 19:08:39,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1410, Unknown=0, NotChecked=0, Total=1560 [2021-11-25 19:08:39,264 INFO L87 Difference]: Start difference. First operand 231 states and 304 transitions. Second operand has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 20 states have internal predecessors, (53), 5 states have call successors, (13), 6 states have call predecessors, (13), 8 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-25 19:08:39,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:08:39,668 INFO L93 Difference]: Finished difference Result 341 states and 444 transitions. [2021-11-25 19:08:39,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 19:08:39,669 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 20 states have internal predecessors, (53), 5 states have call successors, (13), 6 states have call predecessors, (13), 8 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 37 [2021-11-25 19:08:39,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:08:39,671 INFO L225 Difference]: With dead ends: 341 [2021-11-25 19:08:39,672 INFO L226 Difference]: Without dead ends: 315 [2021-11-25 19:08:39,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 75 SyntacticMatches, 7 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=227, Invalid=1753, Unknown=0, NotChecked=0, Total=1980 [2021-11-25 19:08:39,673 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 127 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:08:39,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 232 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:08:39,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-11-25 19:08:39,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 236. [2021-11-25 19:08:39,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 189 states have (on average 1.3597883597883598) internal successors, (257), 193 states have internal predecessors, (257), 23 states have call successors, (23), 20 states have call predecessors, (23), 23 states have return successors, (27), 22 states have call predecessors, (27), 12 states have call successors, (27) [2021-11-25 19:08:39,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 307 transitions. [2021-11-25 19:08:39,707 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 307 transitions. Word has length 37 [2021-11-25 19:08:39,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:08:39,707 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 307 transitions. [2021-11-25 19:08:39,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 20 states have internal predecessors, (53), 5 states have call successors, (13), 6 states have call predecessors, (13), 8 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-25 19:08:39,707 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 307 transitions. [2021-11-25 19:08:39,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-25 19:08:39,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:08:39,709 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:08:39,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-25 19:08:39,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-25 19:08:39,911 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:08:39,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:08:39,912 INFO L85 PathProgramCache]: Analyzing trace with hash 154524628, now seen corresponding path program 2 times [2021-11-25 19:08:39,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:08:39,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216548629] [2021-11-25 19:08:39,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:08:39,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:08:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:08:40,177 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-25 19:08:40,177 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:08:40,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216548629] [2021-11-25 19:08:40,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216548629] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:08:40,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500254862] [2021-11-25 19:08:40,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:08:40,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:08:40,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:08:40,178 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:08:40,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-25 19:08:40,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-25 19:08:40,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:08:40,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 65 conjunts are in the unsatisfiable core [2021-11-25 19:08:40,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:08:40,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-11-25 19:08:40,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:40,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 19:08:40,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-11-25 19:08:40,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:40,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 19:08:40,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:08:40,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:08:40,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:08:40,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:08:40,928 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-25 19:08:40,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:08:41,142 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:08:41,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2021-11-25 19:08:41,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-11-25 19:08:41,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-25 19:08:41,150 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 19:08:41,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 1 [2021-11-25 19:08:41,205 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:08:41,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2021-11-25 19:08:41,207 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:08:41,211 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:08:41,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2021-11-25 19:08:41,224 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:08:41,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2021-11-25 19:08:41,225 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:08:41,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:41,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2021-11-25 19:08:41,324 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:08:41,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500254862] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:08:41,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1872659003] [2021-11-25 19:08:41,327 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2021-11-25 19:08:41,327 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:08:41,327 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:08:41,327 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:08:41,328 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:08:41,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:41,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 23 [2021-11-25 19:08:41,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:41,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 50 [2021-11-25 19:08:41,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:41,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 23 [2021-11-25 19:08:41,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:41,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:41,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:41,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:41,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 321 treesize of output 290 [2021-11-25 19:08:41,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:41,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:41,514 INFO L354 Elim1Store]: treesize reduction 58, result has 22.7 percent of original size [2021-11-25 19:08:41,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 347 treesize of output 304 [2021-11-25 19:08:41,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:41,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:41,547 INFO L354 Elim1Store]: treesize reduction 58, result has 22.7 percent of original size [2021-11-25 19:08:41,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 347 treesize of output 304 [2021-11-25 19:08:41,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:41,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:41,591 INFO L354 Elim1Store]: treesize reduction 58, result has 22.7 percent of original size [2021-11-25 19:08:41,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 312 treesize of output 302 [2021-11-25 19:08:41,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 12 [2021-11-25 19:08:41,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 25 [2021-11-25 19:08:41,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 12 [2021-11-25 19:08:41,764 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:08:41,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 19 [2021-11-25 19:08:41,784 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:08:41,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 19 [2021-11-25 19:08:41,810 INFO L354 Elim1Store]: treesize reduction 37, result has 33.9 percent of original size [2021-11-25 19:08:41,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 31 [2021-11-25 19:08:41,898 INFO L197 IcfgInterpreter]: Interpreting procedure g with input of size 36 for LOIs [2021-11-25 19:08:42,037 INFO L197 IcfgInterpreter]: Interpreting procedure f with input of size 55 for LOIs [2021-11-25 19:08:42,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 11 [2021-11-25 19:08:42,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 11 [2021-11-25 19:08:42,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2021-11-25 19:08:42,159 INFO L197 IcfgInterpreter]: Interpreting procedure malloc with input of size 49 for LOIs [2021-11-25 19:08:42,175 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:08:44,155 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6737#(and (not (= |g_#t~mem9#1| 1)) (= (select (select |#memory_int| |~#pstate~0.base|) (+ |~#pstate~0.offset| (* |g_~i~2#1| 4))) |g_#t~mem9#1|) (or (and (= 5 |~#pstate~0.base|) (= |g_#in~pointer#1.base| 0) (= |~#pstate~0.offset| 0) (= |g_~i~2#1| 0) (= |#memory_int| |old(#memory_int)|) (not (= |g_#in~pointer#1.offset| 0)) (= |g_~pointer#1.base| (select (select |#memory_$Pointer$.base| |~#pp~0.base|) (+ |~#pp~0.offset| (* |g_~i~2#1| 4)))) (= |g_~pointer#1.offset| (select (select |#memory_$Pointer$.offset| |~#pp~0.base|) (+ |~#pp~0.offset| (* |g_~i~2#1| 4)))) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |g_~pointer#1.offset| |g_#in~pointer#1.offset|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |~#pp~0.offset| 0) (= |#NULL.offset| 0) (not (= ~counter~0 1)) (= 4 |~#pp~0.base|) (= |g_~pointer#1.base| |g_#in~pointer#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) (and (= 5 |~#pstate~0.base|) (< |g_~i~2#1| 2) (= |g_#in~pointer#1.base| 0) (= |~#pstate~0.offset| 0) (= |g_~pointer#1.base| (select (select |#memory_$Pointer$.base| |~#pp~0.base|) (+ |~#pp~0.offset| (* |g_~i~2#1| 4)))) (<= 0 |g_~pointer#1.base|) (= |g_~pointer#1.offset| (select (select |#memory_$Pointer$.offset| |~#pp~0.base|) (+ |~#pp~0.offset| (* |g_~i~2#1| 4)))) (<= 1 |g_~i~2#1|) (= |~#pp~0.offset| 0) (= |#NULL.offset| 0) (<= |g_~pointer#1.base| 0) (= 4 |~#pp~0.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))))' at error location [2021-11-25 19:08:44,156 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:08:44,156 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:08:44,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 10] total 33 [2021-11-25 19:08:44,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180997167] [2021-11-25 19:08:44,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:08:44,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-25 19:08:44,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:08:44,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-25 19:08:44,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=2227, Unknown=0, NotChecked=0, Total=2450 [2021-11-25 19:08:44,158 INFO L87 Difference]: Start difference. First operand 236 states and 307 transitions. Second operand has 33 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 25 states have internal predecessors, (63), 7 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2021-11-25 19:08:45,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:08:45,342 INFO L93 Difference]: Finished difference Result 302 states and 389 transitions. [2021-11-25 19:08:45,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-25 19:08:45,347 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 25 states have internal predecessors, (63), 7 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 37 [2021-11-25 19:08:45,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:08:45,350 INFO L225 Difference]: With dead ends: 302 [2021-11-25 19:08:45,350 INFO L226 Difference]: Without dead ends: 280 [2021-11-25 19:08:45,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 72 SyntacticMatches, 4 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=393, Invalid=3389, Unknown=0, NotChecked=0, Total=3782 [2021-11-25 19:08:45,351 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 133 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:08:45,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 49 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 19:08:45,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-11-25 19:08:45,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 249. [2021-11-25 19:08:45,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 199 states have (on average 1.35678391959799) internal successors, (270), 204 states have internal predecessors, (270), 24 states have call successors, (24), 21 states have call predecessors, (24), 25 states have return successors, (29), 23 states have call predecessors, (29), 13 states have call successors, (29) [2021-11-25 19:08:45,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 323 transitions. [2021-11-25 19:08:45,387 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 323 transitions. Word has length 37 [2021-11-25 19:08:45,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:08:45,387 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 323 transitions. [2021-11-25 19:08:45,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 25 states have internal predecessors, (63), 7 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2021-11-25 19:08:45,388 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 323 transitions. [2021-11-25 19:08:45,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 19:08:45,389 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:08:45,389 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:08:45,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-25 19:08:45,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:08:45,615 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:08:45,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:08:45,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1434437945, now seen corresponding path program 3 times [2021-11-25 19:08:45,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:08:45,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97171893] [2021-11-25 19:08:45,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:08:45,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:08:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:08:45,662 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:08:45,662 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:08:45,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97171893] [2021-11-25 19:08:45,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97171893] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:08:45,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115154951] [2021-11-25 19:08:45,663 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:08:45,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:08:45,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:08:45,664 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:08:45,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-25 19:08:45,809 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:08:45,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:08:45,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:08:45,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:08:45,863 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:08:45,863 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:08:45,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115154951] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:08:45,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:08:45,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2021-11-25 19:08:45,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833453921] [2021-11-25 19:08:45,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:08:45,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:08:45,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:08:45,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:08:45,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:08:45,864 INFO L87 Difference]: Start difference. First operand 249 states and 323 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:08:45,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:08:45,911 INFO L93 Difference]: Finished difference Result 424 states and 553 transitions. [2021-11-25 19:08:45,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:08:45,911 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 38 [2021-11-25 19:08:45,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:08:45,914 INFO L225 Difference]: With dead ends: 424 [2021-11-25 19:08:45,914 INFO L226 Difference]: Without dead ends: 233 [2021-11-25 19:08:45,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:08:45,916 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 8 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:08:45,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 60 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:08:45,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-11-25 19:08:45,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2021-11-25 19:08:45,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 188 states have (on average 1.3297872340425532) internal successors, (250), 191 states have internal predecessors, (250), 22 states have call successors, (22), 20 states have call predecessors, (22), 22 states have return successors, (24), 21 states have call predecessors, (24), 12 states have call successors, (24) [2021-11-25 19:08:45,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 296 transitions. [2021-11-25 19:08:45,952 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 296 transitions. Word has length 38 [2021-11-25 19:08:45,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:08:45,953 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 296 transitions. [2021-11-25 19:08:45,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:08:45,953 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 296 transitions. [2021-11-25 19:08:45,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-25 19:08:45,954 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:08:45,954 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:08:45,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-11-25 19:08:46,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-25 19:08:46,179 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:08:46,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:08:46,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1336095033, now seen corresponding path program 1 times [2021-11-25 19:08:46,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:08:46,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179099521] [2021-11-25 19:08:46,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:08:46,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:08:46,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:08:46,550 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:08:46,551 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:08:46,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179099521] [2021-11-25 19:08:46,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179099521] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:08:46,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537459820] [2021-11-25 19:08:46,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:08:46,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:08:46,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:08:46,552 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:08:46,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-25 19:08:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:08:46,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 53 conjunts are in the unsatisfiable core [2021-11-25 19:08:46,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:08:46,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2021-11-25 19:08:46,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:46,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 19:08:47,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:08:47,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:47,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-25 19:08:47,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:47,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 19:08:47,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:08:47,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:47,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 19:08:47,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:08:47,474 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 13 refuted. 2 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:08:47,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:08:47,526 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1447 (Array Int Int))) (not (= |c_g_~pointer#1.offset| (select (select (store |c_#memory_$Pointer$.offset| |c_~#pstate~0.base| v_ArrVal_1447) |c_~#pp~0.base|) (+ |c_~#pp~0.offset| (* |c_g_~i~2#1| 4) 4))))) is different from false [2021-11-25 19:08:47,539 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1447 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.offset| |c_~#pstate~0.base| v_ArrVal_1447) |c_~#pp~0.base|) (+ |c_~#pp~0.offset| 4)) |c_g_#in~pointer#1.offset|))) is different from false [2021-11-25 19:08:47,544 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1447 (Array Int Int))) (not (= |c_ULTIMATE.start_main_~a~0#1.offset| (select (select (store |c_#memory_$Pointer$.offset| |c_~#pstate~0.base| v_ArrVal_1447) |c_~#pp~0.base|) (+ |c_~#pp~0.offset| 4))))) is different from false [2021-11-25 19:08:47,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537459820] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:08:47,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1269173486] [2021-11-25 19:08:47,557 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2021-11-25 19:08:47,558 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:08:47,558 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:08:47,558 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:08:47,558 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:08:47,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:47,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 50 [2021-11-25 19:08:47,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:47,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 23 [2021-11-25 19:08:47,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:47,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 23 [2021-11-25 19:08:47,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:47,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:47,724 INFO L354 Elim1Store]: treesize reduction 58, result has 22.7 percent of original size [2021-11-25 19:08:47,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 347 treesize of output 304 [2021-11-25 19:08:47,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:47,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:47,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:47,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:47,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 321 treesize of output 290 [2021-11-25 19:08:47,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:47,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:47,777 INFO L354 Elim1Store]: treesize reduction 58, result has 22.7 percent of original size [2021-11-25 19:08:47,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 312 treesize of output 302 [2021-11-25 19:08:47,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:47,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:47,805 INFO L354 Elim1Store]: treesize reduction 58, result has 22.7 percent of original size [2021-11-25 19:08:47,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 347 treesize of output 304 [2021-11-25 19:08:47,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 12 [2021-11-25 19:08:47,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 12 [2021-11-25 19:08:47,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 25 [2021-11-25 19:08:47,970 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:08:47,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 19 [2021-11-25 19:08:47,990 INFO L354 Elim1Store]: treesize reduction 37, result has 33.9 percent of original size [2021-11-25 19:08:47,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 31 [2021-11-25 19:08:48,009 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:08:48,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 19 [2021-11-25 19:08:48,083 INFO L197 IcfgInterpreter]: Interpreting procedure g with input of size 36 for LOIs [2021-11-25 19:08:48,448 INFO L197 IcfgInterpreter]: Interpreting procedure f with input of size 55 for LOIs [2021-11-25 19:08:48,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 11 [2021-11-25 19:08:48,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 11 [2021-11-25 19:08:48,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2021-11-25 19:08:48,606 INFO L197 IcfgInterpreter]: Interpreting procedure malloc with input of size 49 for LOIs [2021-11-25 19:08:48,622 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:08:52,081 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8772#(and (not (= |g_#t~mem9#1| 1)) (or (and (= 5 |~#pstate~0.base|) (= (select (select |old(#memory_int)| |~#pstate~0.base|) (+ |~#pstate~0.offset| (- 4) (* |g_~i~2#1| 4))) 1) (= |~#pstate~0.offset| 0) (not (= |g_#in~pointer#1.offset| 0)) (= |#memory_$Pointer$.offset| (store |old(#memory_$Pointer$.offset)| |~#pstate~0.base| (store (select |old(#memory_$Pointer$.offset)| |~#pstate~0.base|) (+ |~#pstate~0.offset| (- 4) (* |g_~i~2#1| 4)) (select (select |#memory_$Pointer$.offset| |~#pstate~0.base|) (+ |~#pstate~0.offset| (- 4) (* |g_~i~2#1| 4)))))) (= |g_~pointer#1.offset| (select (select |old(#memory_$Pointer$.offset)| |~#pp~0.base|) (+ (- 4) |~#pp~0.offset| (* |g_~i~2#1| 4)))) (= |g_~pointer#1.base| (select (select |#memory_$Pointer$.base| |~#pp~0.base|) (+ |~#pp~0.offset| (* |g_~i~2#1| 4)))) (<= 0 |g_~pointer#1.base|) (= |g_~pointer#1.offset| (select (select |#memory_$Pointer$.offset| |~#pp~0.base|) (+ |~#pp~0.offset| (* |g_~i~2#1| 4)))) (= |g_~pointer#1.base| (select (select |old(#memory_$Pointer$.base)| |~#pp~0.base|) (+ (- 4) |~#pp~0.offset| (* |g_~i~2#1| 4)))) (= |g_~pointer#1.offset| |g_#in~pointer#1.offset|) (= (select (select |#memory_int| |~#pstate~0.base|) (+ |~#pstate~0.offset| (* |g_~i~2#1| 4))) |g_#t~mem9#1|) (= |g_~i~2#1| 1) (= |~#pp~0.offset| 0) (= |#NULL.offset| 0) (<= |g_~pointer#1.base| 0) (not (= ~counter~0 1)) (= 4 |~#pp~0.base|) (= (store |old(#memory_$Pointer$.base)| |~#pstate~0.base| (store (select |old(#memory_$Pointer$.base)| |~#pstate~0.base|) (+ |~#pstate~0.offset| (- 4) (* |g_~i~2#1| 4)) (select (select |#memory_$Pointer$.base| |~#pstate~0.base|) (+ |~#pstate~0.offset| (- 4) (* |g_~i~2#1| 4))))) |#memory_$Pointer$.base|) (= |g_~pointer#1.base| |g_#in~pointer#1.base|) (<= 0 |#StackHeapBarrier|) (= |#memory_int| (store |old(#memory_int)| |~#pstate~0.base| (store (select |old(#memory_int)| |~#pstate~0.base|) (+ |~#pstate~0.offset| (- 4) (* |g_~i~2#1| 4)) 2))) (= |#NULL.base| 0)) (and (= 5 |~#pstate~0.base|) (= |g_#in~pointer#1.base| 0) (= |~#pstate~0.offset| 0) (= |g_~i~2#1| 0) (= |#memory_int| |old(#memory_int)|) (not (= |g_#in~pointer#1.offset| 0)) (= |g_~pointer#1.base| (select (select |#memory_$Pointer$.base| |~#pp~0.base|) (+ |~#pp~0.offset| (* |g_~i~2#1| 4)))) (= |g_~pointer#1.offset| (select (select |#memory_$Pointer$.offset| |~#pp~0.base|) (+ |~#pp~0.offset| (* |g_~i~2#1| 4)))) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |g_~pointer#1.offset| |g_#in~pointer#1.offset|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= (select (select |#memory_int| |~#pstate~0.base|) (+ |~#pstate~0.offset| (* |g_~i~2#1| 4))) |g_#t~mem9#1|) (= |~#pp~0.offset| 0) (= |#NULL.offset| 0) (not (= ~counter~0 1)) (= 4 |~#pp~0.base|) (= |g_~pointer#1.base| |g_#in~pointer#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))))' at error location [2021-11-25 19:08:52,081 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:08:52,081 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:08:52,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 34 [2021-11-25 19:08:52,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591855333] [2021-11-25 19:08:52,082 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:08:52,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-25 19:08:52,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:08:52,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-25 19:08:52,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=2761, Unknown=20, NotChecked=324, Total=3306 [2021-11-25 19:08:52,083 INFO L87 Difference]: Start difference. First operand 233 states and 296 transitions. Second operand has 34 states, 31 states have (on average 1.7741935483870968) internal successors, (55), 29 states have internal predecessors, (55), 5 states have call successors, (10), 7 states have call predecessors, (10), 8 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-25 19:08:53,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:08:53,671 INFO L93 Difference]: Finished difference Result 316 states and 398 transitions. [2021-11-25 19:08:53,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-25 19:08:53,671 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 31 states have (on average 1.7741935483870968) internal successors, (55), 29 states have internal predecessors, (55), 5 states have call successors, (10), 7 states have call predecessors, (10), 8 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 39 [2021-11-25 19:08:53,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:08:53,673 INFO L225 Difference]: With dead ends: 316 [2021-11-25 19:08:53,673 INFO L226 Difference]: Without dead ends: 281 [2021-11-25 19:08:53,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1690 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=481, Invalid=5646, Unknown=47, NotChecked=468, Total=6642 [2021-11-25 19:08:53,674 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 170 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 106 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:08:53,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 268 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1052 Invalid, 0 Unknown, 106 Unchecked, 0.6s Time] [2021-11-25 19:08:53,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-11-25 19:08:53,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 228. [2021-11-25 19:08:53,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 184 states have (on average 1.3043478260869565) internal successors, (240), 187 states have internal predecessors, (240), 21 states have call successors, (21), 20 states have call predecessors, (21), 22 states have return successors, (23), 20 states have call predecessors, (23), 12 states have call successors, (23) [2021-11-25 19:08:53,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 284 transitions. [2021-11-25 19:08:53,706 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 284 transitions. Word has length 39 [2021-11-25 19:08:53,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:08:53,707 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 284 transitions. [2021-11-25 19:08:53,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 31 states have (on average 1.7741935483870968) internal successors, (55), 29 states have internal predecessors, (55), 5 states have call successors, (10), 7 states have call predecessors, (10), 8 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-25 19:08:53,707 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 284 transitions. [2021-11-25 19:08:53,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-25 19:08:53,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:08:53,708 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:08:53,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-25 19:08:53,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-25 19:08:53,923 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:08:53,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:08:53,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1532598668, now seen corresponding path program 1 times [2021-11-25 19:08:53,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:08:53,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867295843] [2021-11-25 19:08:53,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:08:53,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:08:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:08:53,985 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 19:08:53,986 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:08:53,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867295843] [2021-11-25 19:08:53,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867295843] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:08:53,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501002316] [2021-11-25 19:08:53,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:08:53,987 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:08:53,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:08:53,988 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:08:54,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-25 19:08:54,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:08:54,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:08:54,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:08:54,198 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 19:08:54,198 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:08:54,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501002316] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:08:54,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:08:54,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2021-11-25 19:08:54,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905684428] [2021-11-25 19:08:54,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:08:54,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:08:54,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:08:54,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:08:54,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:08:54,199 INFO L87 Difference]: Start difference. First operand 228 states and 284 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:08:54,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:08:54,257 INFO L93 Difference]: Finished difference Result 374 states and 469 transitions. [2021-11-25 19:08:54,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:08:54,258 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2021-11-25 19:08:54,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:08:54,260 INFO L225 Difference]: With dead ends: 374 [2021-11-25 19:08:54,260 INFO L226 Difference]: Without dead ends: 202 [2021-11-25 19:08:54,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:08:54,264 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 11 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:08:54,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 71 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:08:54,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-11-25 19:08:54,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 197. [2021-11-25 19:08:54,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 157 states have (on average 1.1656050955414012) internal successors, (183), 159 states have internal predecessors, (183), 19 states have call successors, (19), 19 states have call predecessors, (19), 20 states have return successors, (21), 18 states have call predecessors, (21), 12 states have call successors, (21) [2021-11-25 19:08:54,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 223 transitions. [2021-11-25 19:08:54,298 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 223 transitions. Word has length 41 [2021-11-25 19:08:54,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:08:54,299 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 223 transitions. [2021-11-25 19:08:54,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:08:54,299 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 223 transitions. [2021-11-25 19:08:54,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-25 19:08:54,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:08:54,300 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:08:54,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-11-25 19:08:54,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-25 19:08:54,501 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:08:54,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:08:54,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1452557683, now seen corresponding path program 1 times [2021-11-25 19:08:54,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:08:54,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309278957] [2021-11-25 19:08:54,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:08:54,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:08:54,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:08:54,873 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:08:54,873 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:08:54,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309278957] [2021-11-25 19:08:54,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309278957] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:08:54,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859010317] [2021-11-25 19:08:54,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:08:54,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:08:54,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:08:54,874 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:08:54,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-25 19:08:55,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:08:55,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-25 19:08:55,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:08:55,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2021-11-25 19:08:55,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:55,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 19:08:55,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:08:55,669 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 19:08:55,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:08:55,921 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:08:55,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-11-25 19:08:55,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-25 19:08:55,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-25 19:08:55,995 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:08:55,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2021-11-25 19:08:55,997 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:08:56,001 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:08:56,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2021-11-25 19:08:56,239 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:08:56,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859010317] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:08:56,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [667359123] [2021-11-25 19:08:56,242 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2021-11-25 19:08:56,242 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:08:56,243 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:08:56,243 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:08:56,243 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:08:56,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:56,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 23 [2021-11-25 19:08:56,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:56,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 50 [2021-11-25 19:08:56,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:56,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 23 [2021-11-25 19:08:56,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:56,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:56,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:56,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:56,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 321 treesize of output 290 [2021-11-25 19:08:56,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:56,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:56,373 INFO L354 Elim1Store]: treesize reduction 58, result has 22.7 percent of original size [2021-11-25 19:08:56,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 347 treesize of output 304 [2021-11-25 19:08:56,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:56,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:56,419 INFO L354 Elim1Store]: treesize reduction 58, result has 22.7 percent of original size [2021-11-25 19:08:56,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 347 treesize of output 304 [2021-11-25 19:08:56,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:56,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:56,443 INFO L354 Elim1Store]: treesize reduction 58, result has 22.7 percent of original size [2021-11-25 19:08:56,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 312 treesize of output 302 [2021-11-25 19:08:56,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 25 [2021-11-25 19:08:56,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 12 [2021-11-25 19:08:56,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 12 [2021-11-25 19:08:56,589 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:08:56,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 19 [2021-11-25 19:08:56,609 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:08:56,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 19 [2021-11-25 19:08:56,634 INFO L354 Elim1Store]: treesize reduction 37, result has 33.9 percent of original size [2021-11-25 19:08:56,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 31 [2021-11-25 19:08:56,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-11-25 19:08:56,773 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:08:56,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-11-25 19:08:56,860 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:08:56,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-11-25 19:08:56,996 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:08:57,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-11-25 19:08:57,084 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:08:57,215 INFO L197 IcfgInterpreter]: Interpreting procedure g with input of size 20 for LOIs [2021-11-25 19:08:57,303 INFO L197 IcfgInterpreter]: Interpreting procedure f with input of size 20 for LOIs [2021-11-25 19:08:57,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:57,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2021-11-25 19:08:57,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:57,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 11 [2021-11-25 19:08:57,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:57,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 11 [2021-11-25 19:08:57,383 INFO L197 IcfgInterpreter]: Interpreting procedure malloc with input of size 49 for LOIs [2021-11-25 19:08:57,396 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:08:59,865 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10840#(and (not (= |g_#t~mem9#1| 1)) (<= 0 |#NULL.base|) (<= |g_#in~pointer#1.base| 0) (<= 0 |~#pp~0.offset|) (<= 0 |g_~pointer#1.base|) (<= |#NULL.offset| 0) (<= |~#pp~0.offset| 0) (= (select (select |#memory_int| |~#pstate~0.base|) (+ |~#pstate~0.offset| (* |g_~i~2#1| 4))) |g_#t~mem9#1|) (<= 0 |g_#in~pointer#1.base|) (or (and (< |g_~i~2#1| 2) (= |g_~pointer#1.base| (select (select |#memory_$Pointer$.base| |~#pp~0.base|) (+ |~#pp~0.offset| (* |g_~i~2#1| 4)))) (= |g_~pointer#1.offset| (select (select |#memory_$Pointer$.offset| |~#pp~0.base|) (+ |~#pp~0.offset| (* |g_~i~2#1| 4)))) (<= 1 |g_~i~2#1|)) (and (= |g_~i~2#1| 0) (= |g_~pointer#1.base| (select (select |#memory_$Pointer$.base| |~#pp~0.base|) (+ |~#pp~0.offset| (* |g_~i~2#1| 4)))) (= |g_~pointer#1.offset| (select (select |#memory_$Pointer$.offset| |~#pp~0.base|) (+ |~#pp~0.offset| (* |g_~i~2#1| 4)))) (= |g_~pointer#1.offset| |g_#in~pointer#1.offset|))) (<= |~#pp~0.base| 4) (<= 5 |~#pstate~0.base|) (<= |#NULL.base| 0) (<= |~#pstate~0.base| 5) (<= |g_~pointer#1.base| 0) (<= 0 |~#pstate~0.offset|) (<= |~#pstate~0.offset| 0) (<= 0 |#NULL.offset|) (<= 4 |~#pp~0.base|) (<= 0 |#StackHeapBarrier|))' at error location [2021-11-25 19:08:59,865 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:08:59,866 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:08:59,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 16] total 47 [2021-11-25 19:08:59,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279298966] [2021-11-25 19:08:59,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:08:59,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-11-25 19:08:59,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:08:59,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-11-25 19:08:59,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=4252, Unknown=0, NotChecked=0, Total=4556 [2021-11-25 19:08:59,868 INFO L87 Difference]: Start difference. First operand 197 states and 223 transitions. Second operand has 47 states, 40 states have (on average 1.8) internal successors, (72), 36 states have internal predecessors, (72), 11 states have call successors, (15), 8 states have call predecessors, (15), 12 states have return successors, (14), 10 states have call predecessors, (14), 11 states have call successors, (14) [2021-11-25 19:09:01,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:09:01,594 INFO L93 Difference]: Finished difference Result 245 states and 271 transitions. [2021-11-25 19:09:01,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-25 19:09:01,595 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 40 states have (on average 1.8) internal successors, (72), 36 states have internal predecessors, (72), 11 states have call successors, (15), 8 states have call predecessors, (15), 12 states have return successors, (14), 10 states have call predecessors, (14), 11 states have call successors, (14) Word has length 45 [2021-11-25 19:09:01,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:09:01,596 INFO L225 Difference]: With dead ends: 245 [2021-11-25 19:09:01,597 INFO L226 Difference]: Without dead ends: 225 [2021-11-25 19:09:01,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2254 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=671, Invalid=7519, Unknown=0, NotChecked=0, Total=8190 [2021-11-25 19:09:01,600 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 184 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 1598 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 1736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:09:01,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 60 Invalid, 1736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1598 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 19:09:01,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-11-25 19:09:01,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 192. [2021-11-25 19:09:01,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 153 states have (on average 1.1633986928104576) internal successors, (178), 154 states have internal predecessors, (178), 19 states have call successors, (19), 19 states have call predecessors, (19), 19 states have return successors, (20), 18 states have call predecessors, (20), 12 states have call successors, (20) [2021-11-25 19:09:01,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 217 transitions. [2021-11-25 19:09:01,629 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 217 transitions. Word has length 45 [2021-11-25 19:09:01,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:09:01,629 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 217 transitions. [2021-11-25 19:09:01,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 40 states have (on average 1.8) internal successors, (72), 36 states have internal predecessors, (72), 11 states have call successors, (15), 8 states have call predecessors, (15), 12 states have return successors, (14), 10 states have call predecessors, (14), 11 states have call successors, (14) [2021-11-25 19:09:01,630 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 217 transitions. [2021-11-25 19:09:01,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-25 19:09:01,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:09:01,631 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:09:01,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-25 19:09:01,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-25 19:09:01,850 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:09:01,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:09:01,850 INFO L85 PathProgramCache]: Analyzing trace with hash -703471252, now seen corresponding path program 1 times [2021-11-25 19:09:01,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:09:01,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284740109] [2021-11-25 19:09:01,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:01,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:09:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:09:02,135 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 19:09:02,135 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:09:02,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284740109] [2021-11-25 19:09:02,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284740109] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:09:02,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581462399] [2021-11-25 19:09:02,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:02,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:09:02,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:09:02,137 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:09:02,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-25 19:09:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:09:02,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-25 19:09:02,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:09:02,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-11-25 19:09:02,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:02,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 19:09:02,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:09:02,885 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:09:02,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:09:03,065 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:09:03,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2021-11-25 19:09:03,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2021-11-25 19:09:03,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-25 19:09:03,125 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:09:03,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2021-11-25 19:09:03,126 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:09:03,130 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:09:03,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2021-11-25 19:09:03,380 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:09:03,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581462399] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:09:03,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [832239587] [2021-11-25 19:09:03,382 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2021-11-25 19:09:03,382 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:09:03,382 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:09:03,383 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:09:03,383 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:09:03,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:03,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:03,421 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:09:03,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 28 [2021-11-25 19:09:03,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:03,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:03,434 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:09:03,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 60 [2021-11-25 19:09:03,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:03,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:03,447 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:09:03,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 28 [2021-11-25 19:09:03,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:03,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:03,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:03,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:03,573 INFO L354 Elim1Store]: treesize reduction 68, result has 22.7 percent of original size [2021-11-25 19:09:03,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 362 treesize of output 329 [2021-11-25 19:09:03,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:03,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:03,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:03,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:03,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:03,600 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-25 19:09:03,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 332 treesize of output 308 [2021-11-25 19:09:03,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:03,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:03,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:03,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:03,638 INFO L354 Elim1Store]: treesize reduction 71, result has 19.3 percent of original size [2021-11-25 19:09:03,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 323 treesize of output 320 [2021-11-25 19:09:03,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:03,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:03,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:03,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:03,670 INFO L354 Elim1Store]: treesize reduction 68, result has 22.7 percent of original size [2021-11-25 19:09:03,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 358 treesize of output 325 [2021-11-25 19:09:03,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 12 [2021-11-25 19:09:03,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 25 [2021-11-25 19:09:03,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 12 [2021-11-25 19:09:03,945 INFO L354 Elim1Store]: treesize reduction 37, result has 33.9 percent of original size [2021-11-25 19:09:03,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 31 [2021-11-25 19:09:03,960 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:09:03,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 19 [2021-11-25 19:09:04,002 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:09:04,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 19 [2021-11-25 19:09:04,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-11-25 19:09:04,121 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:09:04,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-11-25 19:09:04,233 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:09:04,354 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:09:04,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2021-11-25 19:09:04,377 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:09:04,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2021-11-25 19:09:04,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-25 19:09:04,406 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:09:04,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2021-11-25 19:09:04,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-25 19:09:04,430 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:09:04,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2021-11-25 19:09:04,454 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:09:04,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2021-11-25 19:09:04,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-25 19:09:04,474 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:09:04,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2021-11-25 19:09:04,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-11-25 19:09:04,516 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:09:04,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-11-25 19:09:04,588 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:09:04,721 INFO L197 IcfgInterpreter]: Interpreting procedure g with input of size 20 for LOIs [2021-11-25 19:09:04,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 15 [2021-11-25 19:09:04,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 15 [2021-11-25 19:09:04,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-25 19:09:04,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-25 19:09:04,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 15 [2021-11-25 19:09:04,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 15 [2021-11-25 19:09:04,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 15 [2021-11-25 19:09:04,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-25 19:09:04,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 15 [2021-11-25 19:09:04,940 INFO L197 IcfgInterpreter]: Interpreting procedure f with input of size 20 for LOIs [2021-11-25 19:09:04,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:04,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2021-11-25 19:09:04,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:04,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 11 [2021-11-25 19:09:05,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:05,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 11 [2021-11-25 19:09:05,034 INFO L197 IcfgInterpreter]: Interpreting procedure malloc with input of size 49 for LOIs [2021-11-25 19:09:05,048 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:09:07,929 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11842#(and (not (= |g_#t~mem9#1| 1)) (or (and (= |g_~pointer#1.base| (select (select |#memory_$Pointer$.base| |~#pp~0.base|) (+ |~#pp~0.offset| (* |g_~i~2#1| 4)))) (= |g_~pointer#1.offset| (select (select |#memory_$Pointer$.offset| |~#pp~0.base|) (+ |~#pp~0.offset| (* |g_~i~2#1| 4)))) (= (select (select |#memory_int| |~#pstate~0.base|) (+ |~#pstate~0.offset| (* |g_~i~2#1| 4))) |g_#t~mem9#1|) (= |g_~i~2#1| 1)) (and (= |g_~pointer#1.base| (select (select |#memory_$Pointer$.base| |~#pp~0.base|) (+ |~#pp~0.offset| (* |g_~i~2#1| 4)))) (= |g_~pointer#1.offset| (select (select |#memory_$Pointer$.offset| |~#pp~0.base|) (+ |~#pp~0.offset| (* |g_~i~2#1| 4)))) (= |g_~pointer#1.offset| |g_#in~pointer#1.offset|) (= (select (select |#memory_int| |~#pstate~0.base|) (+ |~#pstate~0.offset| (* |g_~i~2#1| 4))) |g_#t~mem9#1|))) (or (and (<= 0 |#NULL.base|) (<= |g_#in~pointer#1.base| 0) (<= 0 |~#pp~0.offset|) (<= 0 |g_~pointer#1.base|) (<= |#NULL.offset| 0) (<= |~#pp~0.offset| 0) (<= 0 |g_~i~2#1|) (<= 0 |g_#in~pointer#1.base|) (<= |~#pp~0.base| 4) (<= 5 |~#pstate~0.base|) (<= |#NULL.base| 0) (<= |~#pstate~0.base| 5) (<= |g_~pointer#1.base| 0) (<= 0 |~#pstate~0.offset|) (<= |~#pstate~0.offset| 0) (<= 0 |#NULL.offset|) (<= 4 |~#pp~0.base|) (<= |g_~i~2#1| 0) (<= 0 |#StackHeapBarrier|)) (and (<= 0 |#NULL.base|) (<= |g_~i~2#1| 1) (<= |g_#in~pointer#1.base| 0) (<= 0 |~#pp~0.offset|) (<= 0 |g_~pointer#1.base|) (<= |#NULL.offset| 0) (<= |~#pp~0.offset| 0) (<= 0 |g_#in~pointer#1.base|) (<= |~#pp~0.base| 4) (<= 5 |~#pstate~0.base|) (<= |#NULL.base| 0) (<= 1 |g_~i~2#1|) (<= |~#pstate~0.base| 5) (<= |g_~pointer#1.base| 0) (<= 0 |~#pstate~0.offset|) (<= |~#pstate~0.offset| 0) (<= 0 |#NULL.offset|) (<= 4 |~#pp~0.base|) (<= 0 |#StackHeapBarrier|))))' at error location [2021-11-25 19:09:07,929 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:09:07,929 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:09:07,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17, 17] total 43 [2021-11-25 19:09:07,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629986013] [2021-11-25 19:09:07,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:09:07,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-11-25 19:09:07,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:09:07,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-11-25 19:09:07,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=3854, Unknown=0, NotChecked=0, Total=4160 [2021-11-25 19:09:07,932 INFO L87 Difference]: Start difference. First operand 192 states and 217 transitions. Second operand has 43 states, 34 states have (on average 2.411764705882353) internal successors, (82), 31 states have internal predecessors, (82), 11 states have call successors, (16), 8 states have call predecessors, (16), 12 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2021-11-25 19:09:09,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:09:09,530 INFO L93 Difference]: Finished difference Result 205 states and 227 transitions. [2021-11-25 19:09:09,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-25 19:09:09,531 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 34 states have (on average 2.411764705882353) internal successors, (82), 31 states have internal predecessors, (82), 11 states have call successors, (16), 8 states have call predecessors, (16), 12 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) Word has length 45 [2021-11-25 19:09:09,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:09:09,533 INFO L225 Difference]: With dead ends: 205 [2021-11-25 19:09:09,533 INFO L226 Difference]: Without dead ends: 163 [2021-11-25 19:09:09,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1890 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=584, Invalid=6388, Unknown=0, NotChecked=0, Total=6972 [2021-11-25 19:09:09,535 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 225 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:09:09,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 23 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 19:09:09,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-25 19:09:09,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 152. [2021-11-25 19:09:09,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 119 states have (on average 1.134453781512605) internal successors, (135), 120 states have internal predecessors, (135), 16 states have call successors, (16), 16 states have call predecessors, (16), 16 states have return successors, (17), 15 states have call predecessors, (17), 11 states have call successors, (17) [2021-11-25 19:09:09,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 168 transitions. [2021-11-25 19:09:09,576 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 168 transitions. Word has length 45 [2021-11-25 19:09:09,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:09:09,576 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 168 transitions. [2021-11-25 19:09:09,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 34 states have (on average 2.411764705882353) internal successors, (82), 31 states have internal predecessors, (82), 11 states have call successors, (16), 8 states have call predecessors, (16), 12 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2021-11-25 19:09:09,577 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 168 transitions. [2021-11-25 19:09:09,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-25 19:09:09,578 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:09:09,578 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:09:09,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-25 19:09:09,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-25 19:09:09,803 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:09:09,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:09:09,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1874440532, now seen corresponding path program 2 times [2021-11-25 19:09:09,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:09:09,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16556677] [2021-11-25 19:09:09,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:09,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:09:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:09:10,254 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-25 19:09:10,254 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:09:10,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16556677] [2021-11-25 19:09:10,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16556677] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:09:10,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250454726] [2021-11-25 19:09:10,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:09:10,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:09:10,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:09:10,263 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:09:10,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-25 19:09:10,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-25 19:09:10,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:09:10,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 51 conjunts are in the unsatisfiable core [2021-11-25 19:09:10,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:09:11,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:11,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 19:09:11,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:09:11,390 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-25 19:09:11,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:09:11,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2021-11-25 19:09:11,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-25 19:09:11,598 WARN L838 $PredicateComparison]: unable to prove that (or (= |c_~#pp~0.base| |c_~#pstate~0.base|) (forall ((v_ArrVal_2012 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_~#pstate~0.base| v_ArrVal_2012) |c_~#pp~0.base|) |c_~#pp~0.offset|) |c_g_#in~pointer#1.offset|))) is different from false [2021-11-25 19:09:11,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:09:11,650 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:09:11,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2021-11-25 19:09:11,970 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 19:09:11,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250454726] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:09:11,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [820355145] [2021-11-25 19:09:11,973 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2021-11-25 19:09:11,973 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:09:11,974 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:09:11,974 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:09:11,974 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:09:11,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:12,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 23 [2021-11-25 19:09:12,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:12,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 23 [2021-11-25 19:09:12,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:12,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 50 [2021-11-25 19:09:12,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:12,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:12,112 INFO L354 Elim1Store]: treesize reduction 58, result has 22.7 percent of original size [2021-11-25 19:09:12,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 347 treesize of output 304 [2021-11-25 19:09:12,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:12,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:12,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:12,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:12,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 321 treesize of output 290 [2021-11-25 19:09:12,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:12,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:12,158 INFO L354 Elim1Store]: treesize reduction 58, result has 22.7 percent of original size [2021-11-25 19:09:12,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 312 treesize of output 302 [2021-11-25 19:09:12,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:12,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:12,200 INFO L354 Elim1Store]: treesize reduction 58, result has 22.7 percent of original size [2021-11-25 19:09:12,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 347 treesize of output 304 [2021-11-25 19:09:12,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 12 [2021-11-25 19:09:12,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 12 [2021-11-25 19:09:12,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 25 [2021-11-25 19:09:12,334 INFO L354 Elim1Store]: treesize reduction 37, result has 33.9 percent of original size [2021-11-25 19:09:12,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 31 [2021-11-25 19:09:12,355 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:09:12,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 19 [2021-11-25 19:09:12,378 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:09:12,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 19 [2021-11-25 19:09:12,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:09:12,489 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:09:12,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:09:12,562 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:09:12,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-25 19:09:12,649 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:09:12,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2021-11-25 19:09:12,670 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:09:12,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2021-11-25 19:09:12,716 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:09:12,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2021-11-25 19:09:12,733 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:09:12,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2021-11-25 19:09:12,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-25 19:09:12,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-25 19:09:12,789 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:09:12,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2021-11-25 19:09:12,811 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:09:12,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2021-11-25 19:09:12,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:09:12,852 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:09:12,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:09:12,921 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:09:13,044 INFO L197 IcfgInterpreter]: Interpreting procedure g with input of size 20 for LOIs [2021-11-25 19:09:13,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 15 [2021-11-25 19:09:13,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-25 19:09:13,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 15 [2021-11-25 19:09:13,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 15 [2021-11-25 19:09:13,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-25 19:09:13,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 15 [2021-11-25 19:09:13,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-25 19:09:13,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 15 [2021-11-25 19:09:13,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 15 [2021-11-25 19:09:13,224 INFO L197 IcfgInterpreter]: Interpreting procedure f with input of size 20 for LOIs [2021-11-25 19:09:13,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:13,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2021-11-25 19:09:13,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:13,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 11 [2021-11-25 19:09:13,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:13,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 11 [2021-11-25 19:09:13,301 INFO L197 IcfgInterpreter]: Interpreting procedure malloc with input of size 49 for LOIs [2021-11-25 19:09:13,313 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:09:16,211 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12736#(and (not (= |g_#t~mem9#1| 1)) (or (and (= |g_~pointer#1.base| (select (select |#memory_$Pointer$.base| |~#pp~0.base|) (+ |~#pp~0.offset| (* |g_~i~2#1| 4)))) (= |g_~pointer#1.offset| (select (select |#memory_$Pointer$.offset| |~#pp~0.base|) (+ |~#pp~0.offset| (* |g_~i~2#1| 4)))) (= (select (select |#memory_int| |~#pstate~0.base|) (+ |~#pstate~0.offset| (* |g_~i~2#1| 4))) |g_#t~mem9#1|) (= |g_~i~2#1| 1)) (and (= |g_~pointer#1.base| (select (select |#memory_$Pointer$.base| |~#pp~0.base|) (+ |~#pp~0.offset| (* |g_~i~2#1| 4)))) (= |g_~pointer#1.offset| (select (select |#memory_$Pointer$.offset| |~#pp~0.base|) (+ |~#pp~0.offset| (* |g_~i~2#1| 4)))) (= |g_~pointer#1.offset| |g_#in~pointer#1.offset|) (= (select (select |#memory_int| |~#pstate~0.base|) (+ |~#pstate~0.offset| (* |g_~i~2#1| 4))) |g_#t~mem9#1|))) (or (and (<= 0 |#NULL.base|) (<= |g_#in~pointer#1.base| 0) (<= 0 |~#pp~0.offset|) (<= 0 |g_~pointer#1.base|) (<= |#NULL.offset| 0) (<= |~#pp~0.offset| 0) (<= 0 |g_~i~2#1|) (<= 0 |g_#in~pointer#1.base|) (<= |~#pp~0.base| 4) (<= 5 |~#pstate~0.base|) (<= |#NULL.base| 0) (<= |~#pstate~0.base| 5) (<= |g_~pointer#1.base| 0) (<= 0 |~#pstate~0.offset|) (<= |~#pstate~0.offset| 0) (<= 0 |#NULL.offset|) (<= 4 |~#pp~0.base|) (<= |g_~i~2#1| 0) (<= 0 |#StackHeapBarrier|)) (and (<= 0 |#NULL.base|) (<= |g_~i~2#1| 1) (<= |g_#in~pointer#1.base| 0) (<= 0 |~#pp~0.offset|) (<= 0 |g_~pointer#1.base|) (<= |#NULL.offset| 0) (<= |~#pp~0.offset| 0) (<= 0 |g_#in~pointer#1.base|) (<= |~#pp~0.base| 4) (<= 5 |~#pstate~0.base|) (<= |#NULL.base| 0) (<= 1 |g_~i~2#1|) (<= |~#pstate~0.base| 5) (<= |g_~pointer#1.base| 0) (<= 0 |~#pstate~0.offset|) (<= |~#pstate~0.offset| 0) (<= 0 |#NULL.offset|) (<= 4 |~#pp~0.base|) (<= 0 |#StackHeapBarrier|))))' at error location [2021-11-25 19:09:16,211 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:09:16,211 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:09:16,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 18] total 52 [2021-11-25 19:09:16,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747172956] [2021-11-25 19:09:16,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:09:16,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-11-25 19:09:16,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:09:16,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-11-25 19:09:16,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=4933, Unknown=2, NotChecked=142, Total=5402 [2021-11-25 19:09:16,214 INFO L87 Difference]: Start difference. First operand 152 states and 168 transitions. Second operand has 52 states, 40 states have (on average 1.825) internal successors, (73), 36 states have internal predecessors, (73), 12 states have call successors, (18), 9 states have call predecessors, (18), 11 states have return successors, (15), 12 states have call predecessors, (15), 9 states have call successors, (15) [2021-11-25 19:09:17,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:09:17,566 INFO L93 Difference]: Finished difference Result 193 states and 206 transitions. [2021-11-25 19:09:17,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-25 19:09:17,567 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 40 states have (on average 1.825) internal successors, (73), 36 states have internal predecessors, (73), 12 states have call successors, (18), 9 states have call predecessors, (18), 11 states have return successors, (15), 12 states have call predecessors, (15), 9 states have call successors, (15) Word has length 45 [2021-11-25 19:09:17,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:09:17,568 INFO L225 Difference]: With dead ends: 193 [2021-11-25 19:09:17,568 INFO L226 Difference]: Without dead ends: 159 [2021-11-25 19:09:17,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 87 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 2121 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=542, Invalid=7116, Unknown=2, NotChecked=172, Total=7832 [2021-11-25 19:09:17,570 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 114 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 131 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:09:17,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 22 Invalid, 1652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1438 Invalid, 0 Unknown, 131 Unchecked, 0.6s Time] [2021-11-25 19:09:17,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-25 19:09:17,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 134. [2021-11-25 19:09:17,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 104 states have (on average 1.0865384615384615) internal successors, (113), 106 states have internal predecessors, (113), 14 states have call successors, (14), 14 states have call predecessors, (14), 15 states have return successors, (16), 13 states have call predecessors, (16), 11 states have call successors, (16) [2021-11-25 19:09:17,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 143 transitions. [2021-11-25 19:09:17,592 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 143 transitions. Word has length 45 [2021-11-25 19:09:17,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:09:17,593 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 143 transitions. [2021-11-25 19:09:17,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 40 states have (on average 1.825) internal successors, (73), 36 states have internal predecessors, (73), 12 states have call successors, (18), 9 states have call predecessors, (18), 11 states have return successors, (15), 12 states have call predecessors, (15), 9 states have call successors, (15) [2021-11-25 19:09:17,593 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 143 transitions. [2021-11-25 19:09:17,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-25 19:09:17,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:09:17,594 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:09:17,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-25 19:09:17,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-25 19:09:17,802 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:09:17,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:09:17,802 INFO L85 PathProgramCache]: Analyzing trace with hash -412123782, now seen corresponding path program 1 times [2021-11-25 19:09:17,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:09:17,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951356290] [2021-11-25 19:09:17,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:17,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:09:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:09:18,332 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 20 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:09:18,332 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:09:18,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951356290] [2021-11-25 19:09:18,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951356290] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:09:18,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856395973] [2021-11-25 19:09:18,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:18,333 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:09:18,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:09:18,334 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:09:18,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-25 19:09:18,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:09:18,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-25 19:09:18,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:09:18,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 4 [2021-11-25 19:09:18,654 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:09:18,854 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-25 19:09:18,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:09:19,270 INFO L354 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2021-11-25 19:09:19,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2021-11-25 19:09:19,274 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-25 19:09:19,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 12 [2021-11-25 19:09:19,337 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 19:09:19,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856395973] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:09:19,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1570508010] [2021-11-25 19:09:19,339 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2021-11-25 19:09:19,339 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:09:19,339 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:09:19,340 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:09:19,340 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:09:19,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:19,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:19,377 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:09:19,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 28 [2021-11-25 19:09:19,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:19,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:19,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:09:19,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 60 [2021-11-25 19:09:19,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:19,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:19,402 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:09:19,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 28 [2021-11-25 19:09:19,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:19,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:19,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:19,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:19,496 INFO L354 Elim1Store]: treesize reduction 68, result has 22.7 percent of original size [2021-11-25 19:09:19,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 362 treesize of output 329 [2021-11-25 19:09:19,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:19,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:19,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:19,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:19,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:19,521 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-25 19:09:19,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 332 treesize of output 308 [2021-11-25 19:09:19,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:19,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:19,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:19,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:19,576 INFO L354 Elim1Store]: treesize reduction 71, result has 19.3 percent of original size [2021-11-25 19:09:19,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 323 treesize of output 320 [2021-11-25 19:09:19,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:19,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:19,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:19,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:19,605 INFO L354 Elim1Store]: treesize reduction 71, result has 19.3 percent of original size [2021-11-25 19:09:19,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 358 treesize of output 322 [2021-11-25 19:09:19,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 12 [2021-11-25 19:09:19,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 12 [2021-11-25 19:09:19,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 25 [2021-11-25 19:09:19,779 INFO L354 Elim1Store]: treesize reduction 37, result has 33.9 percent of original size [2021-11-25 19:09:19,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 31 [2021-11-25 19:09:19,795 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:09:19,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 19 [2021-11-25 19:09:19,813 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:09:19,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 19 [2021-11-25 19:09:19,938 INFO L197 IcfgInterpreter]: Interpreting procedure g with input of size 58 for LOIs [2021-11-25 19:09:20,076 INFO L197 IcfgInterpreter]: Interpreting procedure f with input of size 55 for LOIs [2021-11-25 19:09:20,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 11 [2021-11-25 19:09:20,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2021-11-25 19:09:20,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 11 [2021-11-25 19:09:20,188 INFO L197 IcfgInterpreter]: Interpreting procedure malloc with input of size 49 for LOIs [2021-11-25 19:09:20,204 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:09:22,307 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13576#(and (= 5 |~#pstate~0.base|) (not (= |g_#t~mem9#1| 1)) (= |g_#in~pointer#1.base| 0) (<= 0 |g_~pointer#1.base|) (<= |g_~i~2#1| 2) (<= 0 |g_~i~2#1|) (= (select (select |#memory_int| |~#pstate~0.base|) (+ |~#pstate~0.offset| (* |g_~i~2#1| 4))) |g_#t~mem9#1|) (= |~#pp~0.offset| 0) (= |#NULL.offset| 0) (<= |g_~pointer#1.base| 0) (<= 0 |~#pstate~0.offset|) (<= |~#pstate~0.offset| 0) (= 4 |~#pp~0.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:09:22,307 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:09:22,307 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:09:22,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 11, 11] total 45 [2021-11-25 19:09:22,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016632534] [2021-11-25 19:09:22,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:09:22,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-11-25 19:09:22,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:09:22,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-11-25 19:09:22,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=3655, Unknown=0, NotChecked=0, Total=3906 [2021-11-25 19:09:22,309 INFO L87 Difference]: Start difference. First operand 134 states and 143 transitions. Second operand has 45 states, 41 states have (on average 2.048780487804878) internal successors, (84), 37 states have internal predecessors, (84), 10 states have call successors, (17), 8 states have call predecessors, (17), 11 states have return successors, (15), 10 states have call predecessors, (15), 9 states have call successors, (15) [2021-11-25 19:09:24,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:09:24,904 INFO L93 Difference]: Finished difference Result 156 states and 162 transitions. [2021-11-25 19:09:24,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-25 19:09:24,904 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 41 states have (on average 2.048780487804878) internal successors, (84), 37 states have internal predecessors, (84), 10 states have call successors, (17), 8 states have call predecessors, (17), 11 states have return successors, (15), 10 states have call predecessors, (15), 9 states have call successors, (15) Word has length 46 [2021-11-25 19:09:24,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:09:24,905 INFO L225 Difference]: With dead ends: 156 [2021-11-25 19:09:24,905 INFO L226 Difference]: Without dead ends: 127 [2021-11-25 19:09:24,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 102 SyntacticMatches, 6 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2413 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=887, Invalid=9013, Unknown=0, NotChecked=0, Total=9900 [2021-11-25 19:09:24,908 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 136 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 1423 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:09:24,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 427 Invalid, 1544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1423 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 19:09:24,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-25 19:09:24,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 113. [2021-11-25 19:09:24,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 88 states have (on average 1.0568181818181819) internal successors, (93), 91 states have internal predecessors, (93), 11 states have call successors, (11), 11 states have call predecessors, (11), 13 states have return successors, (13), 10 states have call predecessors, (13), 10 states have call successors, (13) [2021-11-25 19:09:24,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 117 transitions. [2021-11-25 19:09:24,927 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 117 transitions. Word has length 46 [2021-11-25 19:09:24,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:09:24,927 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 117 transitions. [2021-11-25 19:09:24,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 41 states have (on average 2.048780487804878) internal successors, (84), 37 states have internal predecessors, (84), 10 states have call successors, (17), 8 states have call predecessors, (17), 11 states have return successors, (15), 10 states have call predecessors, (15), 9 states have call successors, (15) [2021-11-25 19:09:24,928 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 117 transitions. [2021-11-25 19:09:24,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-25 19:09:24,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:09:24,929 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:09:24,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-25 19:09:25,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:09:25,155 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:09:25,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:09:25,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1759632413, now seen corresponding path program 1 times [2021-11-25 19:09:25,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:09:25,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565424254] [2021-11-25 19:09:25,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:25,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:09:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:09:25,189 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-25 19:09:25,189 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:09:25,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565424254] [2021-11-25 19:09:25,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565424254] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:09:25,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264576679] [2021-11-25 19:09:25,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:25,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:09:25,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:09:25,204 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:09:25,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-25 19:09:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:09:25,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:09:25,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:09:25,482 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-25 19:09:25,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:09:25,569 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-25 19:09:25,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264576679] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:09:25,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [148238843] [2021-11-25 19:09:25,571 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2021-11-25 19:09:25,571 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:09:25,572 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:09:25,572 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:09:25,572 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:09:25,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:25,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:25,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:09:25,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 60 [2021-11-25 19:09:25,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:25,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:25,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:09:25,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 28 [2021-11-25 19:09:25,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:25,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:25,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:09:25,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 28 [2021-11-25 19:09:25,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:25,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:25,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:25,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:25,732 INFO L354 Elim1Store]: treesize reduction 71, result has 19.3 percent of original size [2021-11-25 19:09:25,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 362 treesize of output 326 [2021-11-25 19:09:25,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:25,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:25,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:25,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:25,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:25,767 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-25 19:09:25,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 336 treesize of output 312 [2021-11-25 19:09:25,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:25,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:25,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:25,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:25,808 INFO L354 Elim1Store]: treesize reduction 71, result has 19.3 percent of original size [2021-11-25 19:09:25,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 362 treesize of output 326 [2021-11-25 19:09:25,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:25,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:25,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:25,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:25,848 INFO L354 Elim1Store]: treesize reduction 68, result has 22.7 percent of original size [2021-11-25 19:09:25,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 327 treesize of output 327 [2021-11-25 19:09:25,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 12 [2021-11-25 19:09:25,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 12 [2021-11-25 19:09:25,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 25 [2021-11-25 19:09:26,128 INFO L197 IcfgInterpreter]: Interpreting procedure g with input of size 58 for LOIs [2021-11-25 19:09:26,236 INFO L197 IcfgInterpreter]: Interpreting procedure f with input of size 58 for LOIs [2021-11-25 19:09:26,309 INFO L197 IcfgInterpreter]: Interpreting procedure malloc with input of size 49 for LOIs [2021-11-25 19:09:26,324 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:09:27,468 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14343#(and (= 5 |~#pstate~0.base|) (not (= |g_#t~mem9#1| 1)) (= |g_#in~pointer#1.base| 0) (<= 0 |g_~pointer#1.base|) (<= |g_~i~2#1| 2) (<= 0 |g_~i~2#1|) (= (select (select |#memory_int| |~#pstate~0.base|) (+ |~#pstate~0.offset| (* |g_~i~2#1| 4))) |g_#t~mem9#1|) (= |~#pp~0.offset| 0) (= |#NULL.offset| 0) (<= |g_~pointer#1.base| 0) (<= 0 |~#pstate~0.offset|) (<= |~#pstate~0.offset| 0) (= 4 |~#pp~0.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:09:27,468 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:09:27,468 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:09:27,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2021-11-25 19:09:27,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378088053] [2021-11-25 19:09:27,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:09:27,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:09:27,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:09:27,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:09:27,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2021-11-25 19:09:27,470 INFO L87 Difference]: Start difference. First operand 113 states and 117 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-25 19:09:27,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:09:27,504 INFO L93 Difference]: Finished difference Result 124 states and 127 transitions. [2021-11-25 19:09:27,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:09:27,505 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 47 [2021-11-25 19:09:27,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:09:27,506 INFO L225 Difference]: With dead ends: 124 [2021-11-25 19:09:27,506 INFO L226 Difference]: Without dead ends: 113 [2021-11-25 19:09:27,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 113 SyntacticMatches, 9 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2021-11-25 19:09:27,507 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 12 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:09:27,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 85 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:09:27,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-11-25 19:09:27,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-11-25 19:09:27,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 88 states have (on average 1.0454545454545454) internal successors, (92), 91 states have internal predecessors, (92), 11 states have call successors, (11), 11 states have call predecessors, (11), 13 states have return successors, (13), 10 states have call predecessors, (13), 10 states have call successors, (13) [2021-11-25 19:09:27,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 116 transitions. [2021-11-25 19:09:27,526 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 116 transitions. Word has length 47 [2021-11-25 19:09:27,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:09:27,526 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 116 transitions. [2021-11-25 19:09:27,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-25 19:09:27,526 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 116 transitions. [2021-11-25 19:09:27,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-25 19:09:27,527 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:09:27,527 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:09:27,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-25 19:09:27,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:09:27,743 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:09:27,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:09:27,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1778158895, now seen corresponding path program 1 times [2021-11-25 19:09:27,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:09:27,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512863524] [2021-11-25 19:09:27,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:27,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:09:27,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:09:28,116 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:09:28,117 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:09:28,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512863524] [2021-11-25 19:09:28,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512863524] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:09:28,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798294168] [2021-11-25 19:09:28,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:28,117 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:09:28,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:09:28,118 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:09:28,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-25 19:09:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:09:28,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 65 conjunts are in the unsatisfiable core [2021-11-25 19:09:28,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:09:28,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2021-11-25 19:09:28,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:28,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 19:09:28,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:09:28,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:28,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-25 19:09:28,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:28,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 19:09:28,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:09:28,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:09:29,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:29,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 19:09:29,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:09:29,266 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 1 proven. 29 refuted. 2 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:09:29,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:09:29,390 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2293 (Array Int Int))) (not (= |c_ULTIMATE.start_main_~b~0#1.offset| (select (select (store |c_#memory_$Pointer$.offset| |c_~#pstate~0.base| v_ArrVal_2293) |c_~#pp~0.base|) (+ |c_~#pp~0.offset| 4))))) is different from false [2021-11-25 19:09:29,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798294168] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:09:29,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1207293702] [2021-11-25 19:09:29,392 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2021-11-25 19:09:29,392 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:09:29,393 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:09:29,393 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:09:29,393 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:09:29,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:29,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:29,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:09:29,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 28 [2021-11-25 19:09:29,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:29,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:29,436 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:09:29,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 28 [2021-11-25 19:09:29,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:29,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:29,449 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:09:29,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 60 [2021-11-25 19:09:29,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:29,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:29,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:29,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:29,554 INFO L354 Elim1Store]: treesize reduction 68, result has 22.7 percent of original size [2021-11-25 19:09:29,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 362 treesize of output 329 [2021-11-25 19:09:29,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:29,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:29,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:29,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:29,588 INFO L354 Elim1Store]: treesize reduction 71, result has 19.3 percent of original size [2021-11-25 19:09:29,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 358 treesize of output 322 [2021-11-25 19:09:29,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:29,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:29,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:29,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:29,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:29,624 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-25 19:09:29,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 332 treesize of output 308 [2021-11-25 19:09:29,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:29,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:29,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:29,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:29,664 INFO L354 Elim1Store]: treesize reduction 71, result has 19.3 percent of original size [2021-11-25 19:09:29,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 323 treesize of output 320 [2021-11-25 19:09:29,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 12 [2021-11-25 19:09:29,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 25 [2021-11-25 19:09:29,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 12 [2021-11-25 19:09:29,826 INFO L354 Elim1Store]: treesize reduction 37, result has 33.9 percent of original size [2021-11-25 19:09:29,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 31 [2021-11-25 19:09:29,848 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:09:29,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 19 [2021-11-25 19:09:29,872 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:09:29,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 19 [2021-11-25 19:09:29,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-25 19:09:29,964 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:09:29,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2021-11-25 19:09:29,984 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:09:29,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2021-11-25 19:09:30,013 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:09:30,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2021-11-25 19:09:30,037 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:09:30,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2021-11-25 19:09:30,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-25 19:09:30,077 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:09:30,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2021-11-25 19:09:30,111 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:09:30,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2021-11-25 19:09:30,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-25 19:09:30,182 INFO L197 IcfgInterpreter]: Interpreting procedure g with input of size 55 for LOIs [2021-11-25 19:09:30,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 15 [2021-11-25 19:09:30,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-25 19:09:30,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 15 [2021-11-25 19:09:30,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-25 19:09:30,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 15 [2021-11-25 19:09:30,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 15 [2021-11-25 19:09:30,471 INFO L197 IcfgInterpreter]: Interpreting procedure f with input of size 58 for LOIs [2021-11-25 19:09:30,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:30,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 11 [2021-11-25 19:09:30,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:30,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2021-11-25 19:09:30,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:30,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 11 [2021-11-25 19:09:30,604 INFO L197 IcfgInterpreter]: Interpreting procedure malloc with input of size 49 for LOIs [2021-11-25 19:09:30,617 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:09:32,732 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14922#(and (= 5 |~#pstate~0.base|) (not (= |g_#t~mem9#1| 1)) (= |g_#in~pointer#1.base| 0) (<= |g_~i~2#1| 1) (<= 0 |g_~pointer#1.base|) (<= 0 |g_~i~2#1|) (= |~#pp~0.offset| 0) (= |#NULL.offset| 0) (<= |g_~pointer#1.base| 0) (<= 0 |~#pstate~0.offset|) (<= |~#pstate~0.offset| 0) (= 4 |~#pp~0.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:09:32,732 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:09:32,732 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:09:32,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21] total 39 [2021-11-25 19:09:32,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110185040] [2021-11-25 19:09:32,732 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:09:32,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-25 19:09:32,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:09:32,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-25 19:09:32,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=3421, Unknown=33, NotChecked=118, Total=3782 [2021-11-25 19:09:32,734 INFO L87 Difference]: Start difference. First operand 113 states and 116 transitions. Second operand has 39 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 6 states have call successors, (12), 6 states have call predecessors, (12), 10 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2021-11-25 19:09:34,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:09:34,229 INFO L93 Difference]: Finished difference Result 130 states and 132 transitions. [2021-11-25 19:09:34,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-25 19:09:34,230 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 6 states have call successors, (12), 6 states have call predecessors, (12), 10 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) Word has length 49 [2021-11-25 19:09:34,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:09:34,230 INFO L225 Difference]: With dead ends: 130 [2021-11-25 19:09:34,230 INFO L226 Difference]: Without dead ends: 76 [2021-11-25 19:09:34,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 63 SyntacticMatches, 10 SemanticMatches, 84 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2279 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=454, Invalid=6634, Unknown=56, NotChecked=166, Total=7310 [2021-11-25 19:09:34,231 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 82 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 118 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:09:34,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 248 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 973 Invalid, 0 Unknown, 118 Unchecked, 0.6s Time] [2021-11-25 19:09:34,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-11-25 19:09:34,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-11-25 19:09:34,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 60 states have internal predecessors, (61), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2021-11-25 19:09:34,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2021-11-25 19:09:34,240 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 49 [2021-11-25 19:09:34,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:09:34,241 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2021-11-25 19:09:34,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 6 states have call successors, (12), 6 states have call predecessors, (12), 10 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2021-11-25 19:09:34,241 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2021-11-25 19:09:34,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-25 19:09:34,242 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:09:34,242 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:09:34,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-25 19:09:34,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:09:34,442 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:09:34,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:09:34,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1950223481, now seen corresponding path program 3 times [2021-11-25 19:09:34,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:09:34,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931630374] [2021-11-25 19:09:34,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:34,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:09:34,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:09:35,365 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-25 19:09:35,365 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:09:35,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931630374] [2021-11-25 19:09:35,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931630374] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:09:35,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263247735] [2021-11-25 19:09:35,365 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:09:35,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:09:35,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:09:35,371 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:09:35,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-25 19:09:35,726 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:09:35,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:09:35,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 59 conjunts are in the unsatisfiable core [2021-11-25 19:09:35,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:09:36,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 19:09:36,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:09:36,683 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-25 19:09:36,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:09:36,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-25 19:09:36,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-25 19:09:36,982 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_2446 (Array Int Int))) (= |c_g_#in~pointer#1.offset| (select (select (store |c_#memory_$Pointer$.offset| |c_~#pstate~0.base| v_ArrVal_2446) |c_~#pp~0.base|) (+ |c_~#pp~0.offset| 4)))) (= |c_~#pp~0.base| |c_~#pstate~0.base|)) is different from false [2021-11-25 19:09:37,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:09:37,047 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:09:37,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2021-11-25 19:09:37,501 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 2 not checked. [2021-11-25 19:09:37,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263247735] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:09:37,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1457372036] [2021-11-25 19:09:37,503 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2021-11-25 19:09:37,503 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:09:37,503 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:09:37,504 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:09:37,504 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:09:37,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:37,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 23 [2021-11-25 19:09:37,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:37,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 50 [2021-11-25 19:09:37,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:37,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 23 [2021-11-25 19:09:37,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:37,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:37,638 INFO L354 Elim1Store]: treesize reduction 58, result has 22.7 percent of original size [2021-11-25 19:09:37,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 347 treesize of output 304 [2021-11-25 19:09:37,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:37,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:37,679 INFO L354 Elim1Store]: treesize reduction 58, result has 22.7 percent of original size [2021-11-25 19:09:37,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 347 treesize of output 304 [2021-11-25 19:09:37,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:37,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:37,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:37,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:37,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 321 treesize of output 290 [2021-11-25 19:09:37,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:37,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:37,721 INFO L354 Elim1Store]: treesize reduction 58, result has 22.7 percent of original size [2021-11-25 19:09:37,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 312 treesize of output 302 [2021-11-25 19:09:37,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 12 [2021-11-25 19:09:37,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 25 [2021-11-25 19:09:37,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 12 [2021-11-25 19:09:37,834 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:09:37,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 19 [2021-11-25 19:09:37,853 INFO L354 Elim1Store]: treesize reduction 37, result has 33.9 percent of original size [2021-11-25 19:09:37,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 31 [2021-11-25 19:09:37,872 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:09:37,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 19 [2021-11-25 19:09:37,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-11-25 19:09:38,016 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:09:38,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-11-25 19:09:38,120 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:09:38,229 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:09:38,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2021-11-25 19:09:38,246 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:09:38,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2021-11-25 19:09:38,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-25 19:09:38,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-25 19:09:38,277 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:09:38,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2021-11-25 19:09:38,297 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:09:38,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2021-11-25 19:09:38,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-25 19:09:38,326 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:09:38,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2021-11-25 19:09:38,346 INFO L354 Elim1Store]: treesize reduction 45, result has 29.7 percent of original size [2021-11-25 19:09:38,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2021-11-25 19:09:38,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-11-25 19:09:38,383 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:09:38,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-11-25 19:09:38,477 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:09:38,612 INFO L197 IcfgInterpreter]: Interpreting procedure g with input of size 20 for LOIs [2021-11-25 19:09:38,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 15 [2021-11-25 19:09:38,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 15 [2021-11-25 19:09:38,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-25 19:09:38,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-25 19:09:38,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 15 [2021-11-25 19:09:38,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 15 [2021-11-25 19:09:38,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-25 19:09:38,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 15 [2021-11-25 19:09:38,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 15 [2021-11-25 19:09:38,839 INFO L197 IcfgInterpreter]: Interpreting procedure f with input of size 20 for LOIs [2021-11-25 19:09:38,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:38,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2021-11-25 19:09:38,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:38,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 11 [2021-11-25 19:09:38,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:09:38,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 11 [2021-11-25 19:09:38,916 INFO L197 IcfgInterpreter]: Interpreting procedure malloc with input of size 49 for LOIs [2021-11-25 19:09:38,929 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:09:42,147 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '15639#(and (= 5 |~#pstate~0.base|) (not (= |g_#t~mem9#1| 1)) (= |g_#in~pointer#1.base| 0) (<= |g_~i~2#1| 1) (<= 0 |g_~pointer#1.base|) (<= 0 |g_~i~2#1|) (= |~#pp~0.offset| 0) (= |#NULL.offset| 0) (<= |g_~pointer#1.base| 0) (<= 0 |~#pstate~0.offset|) (<= |~#pstate~0.offset| 0) (= 4 |~#pp~0.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:09:42,147 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:09:42,147 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:09:42,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19, 20] total 58 [2021-11-25 19:09:42,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069597494] [2021-11-25 19:09:42,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:09:42,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-11-25 19:09:42,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:09:42,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-11-25 19:09:42,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=5845, Unknown=2, NotChecked=154, Total=6320 [2021-11-25 19:09:42,150 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand has 58 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 43 states have internal predecessors, (91), 12 states have call successors, (18), 8 states have call predecessors, (18), 11 states have return successors, (15), 12 states have call predecessors, (15), 9 states have call successors, (15) [2021-11-25 19:09:44,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:09:44,160 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2021-11-25 19:09:44,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-25 19:09:44,161 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 43 states have internal predecessors, (91), 12 states have call successors, (18), 8 states have call predecessors, (18), 11 states have return successors, (15), 12 states have call predecessors, (15), 9 states have call successors, (15) Word has length 50 [2021-11-25 19:09:44,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:09:44,161 INFO L225 Difference]: With dead ends: 76 [2021-11-25 19:09:44,161 INFO L226 Difference]: Without dead ends: 0 [2021-11-25 19:09:44,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1867 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=586, Invalid=9316, Unknown=2, NotChecked=196, Total=10100 [2021-11-25 19:09:44,163 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 60 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1357 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:09:44,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 27 Invalid, 1502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1357 Invalid, 0 Unknown, 93 Unchecked, 0.6s Time] [2021-11-25 19:09:44,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-25 19:09:44,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-25 19:09:44,164 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) [2021-11-25 19:09:44,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-25 19:09:44,165 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2021-11-25 19:09:44,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:09:44,165 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-25 19:09:44,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 43 states have internal predecessors, (91), 12 states have call successors, (18), 8 states have call predecessors, (18), 11 states have return successors, (15), 12 states have call predecessors, (15), 9 states have call successors, (15) [2021-11-25 19:09:44,166 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-25 19:09:44,166 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-25 19:09:44,168 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 19:09:44,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-25 19:09:44,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-25 19:09:44,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-25 19:10:56,064 WARN L227 SmtUtils]: Spent 1.17m on a formula simplification. DAG size of input: 265 DAG size of output: 265 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-25 19:11:27,202 WARN L227 SmtUtils]: Spent 30.44s on a formula simplification. DAG size of input: 271 DAG size of output: 270 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-25 19:12:37,406 WARN L227 SmtUtils]: Spent 1.16m on a formula simplification. DAG size of input: 251 DAG size of output: 249 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-25 19:13:47,299 WARN L227 SmtUtils]: Spent 1.16m on a formula simplification. DAG size of input: 262 DAG size of output: 261 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-25 19:13:56,273 WARN L227 SmtUtils]: Spent 5.54s on a formula simplification. DAG size of input: 516 DAG size of output: 241 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-25 19:13:56,602 INFO L858 garLoopResultBuilder]: For program point mallocEXIT(lines 48 51) no Hoare annotation was computed. [2021-11-25 19:13:56,602 INFO L854 garLoopResultBuilder]: At program point mallocENTRY(lines 48 51) the Hoare annotation is: (let ((.cse9 (select |#memory_$Pointer$.offset| |~#pp~0.base|))) (let ((.cse0 (not (= |#NULL.offset| 0))) (.cse1 (not (= |~#pp~0.offset| 0))) (.cse2 (not (= (select .cse9 |~#pp~0.offset|) 0))) (.cse3 (not (= 5 |~#pstate~0.base|))) (.cse4 (not (= 4 |malloc_#in~size|))) (.cse5 (not (= |#NULL.base| 0))) (.cse6 (not (= 4 |~#pp~0.base|))) (.cse7 (not (<= 0 |#StackHeapBarrier|))) (.cse8 (not (= (select .cse9 (+ |~#pp~0.offset| 4)) 0)))) (and (or (not (= |old(~counter~0)| 1)) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (not (<= |~#pstate~0.offset| 0)) (= ~counter~0 1) .cse8 (not (<= 0 |~#pstate~0.offset|))) (or .cse0 (not (= |~#pstate~0.offset| 0)) .cse1 .cse2 .cse3 .cse4 (not (= |old(~counter~0)| 2)) .cse5 .cse6 .cse7 .cse8 (= ~counter~0 2))))) [2021-11-25 19:13:56,602 INFO L858 garLoopResultBuilder]: For program point L28(lines 28 32) no Hoare annotation was computed. [2021-11-25 19:13:56,603 INFO L854 garLoopResultBuilder]: At program point L27-3(lines 27 33) the Hoare annotation is: (let ((.cse24 (+ |~#pp~0.offset| 4)) (.cse26 (select |old(#memory_$Pointer$.offset)| |~#pp~0.base|))) (let ((.cse5 (select .cse26 |~#pp~0.offset|)) (.cse20 (= f_~i~1 1)) (.cse10 (= |#memory_int| |old(#memory_int)|)) (.cse11 (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) (.cse12 (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (.cse13 (= |f_#in~pointer.offset| f_~pointer.offset)) (.cse25 (= (select .cse26 .cse24) 0)) (.cse22 (select |#memory_$Pointer$.base| |~#pp~0.base|))) (let ((.cse14 (not (= (select .cse22 .cse24) 0))) (.cse8 (not .cse25)) (.cse18 (= ~counter~0 1)) (.cse0 (and .cse20 .cse10 .cse11 .cse12 .cse13)) (.cse1 (not (= |#NULL.offset| 0))) (.cse2 (not (= |~#pstate~0.offset| 0))) (.cse3 (not (= |~#pp~0.offset| 0))) (.cse4 (not (= 5 |~#pstate~0.base|))) (.cse15 (<= 2 f_~i~1)) (.cse6 (and (= f_~pointer.base |f_#in~pointer.base|) .cse10 .cse11 .cse12 (= f_~i~1 0) .cse13)) (.cse7 (not (= |#NULL.base| 0))) (.cse9 (not (= 4 |~#pp~0.base|))) (.cse16 (not (<= 0 |#StackHeapBarrier|))) (.cse17 (not (= |f_#in~pointer.base| 0))) (.cse21 (not (= .cse5 0)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4 (not (= .cse5 1)) (not (= (select (select |old(#memory_int)| |~#pstate~0.base|) |~#pstate~0.offset|) 1)) .cse6 .cse7 .cse8 .cse9 (and .cse10 .cse11 .cse12 .cse13 .cse14 .cse15) .cse16 .cse17 .cse18) (let ((.cse19 (not (= (select .cse22 0) 0)))) (or (and .cse11 .cse19 .cse14) .cse1 .cse2 .cse3 .cse4 (and .cse20 .cse10 .cse11 .cse12 .cse13 .cse19) .cse6 .cse7 .cse8 .cse9 .cse16 .cse17 .cse18 .cse21)) (let ((.cse23 (select |old(#memory_$Pointer$.base)| |~#pp~0.base|))) (or .cse0 .cse1 .cse2 .cse3 (= (select .cse23 0) 0) .cse4 (and .cse10 .cse11 .cse12 .cse13 .cse15) .cse6 .cse7 .cse9 .cse16 .cse17 .cse21 (and (= (select .cse23 .cse24) 0) .cse25))))))) [2021-11-25 19:13:56,603 INFO L858 garLoopResultBuilder]: For program point L27-4(lines 25 34) no Hoare annotation was computed. [2021-11-25 19:13:56,603 INFO L858 garLoopResultBuilder]: For program point fEXIT(lines 25 34) no Hoare annotation was computed. [2021-11-25 19:13:56,603 INFO L854 garLoopResultBuilder]: At program point fENTRY(lines 25 34) the Hoare annotation is: (let ((.cse16 (select |old(#memory_$Pointer$.offset)| |~#pp~0.base|)) (.cse11 (+ |~#pp~0.offset| 4))) (let ((.cse12 (= (select .cse16 .cse11) 0)) (.cse15 (select .cse16 |~#pp~0.offset|))) (let ((.cse10 (not (= .cse15 0))) (.cse0 (and (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))) (.cse1 (not (= |#NULL.offset| 0))) (.cse2 (not (= |~#pstate~0.offset| 0))) (.cse3 (not (= |~#pp~0.offset| 0))) (.cse5 (not (= 5 |~#pstate~0.base|))) (.cse6 (not (= |#NULL.base| 0))) (.cse13 (not .cse12)) (.cse7 (not (= 4 |~#pp~0.base|))) (.cse8 (not (<= 0 |#StackHeapBarrier|))) (.cse9 (not (= |f_#in~pointer.base| 0))) (.cse14 (= ~counter~0 1))) (and (let ((.cse4 (select |old(#memory_$Pointer$.base)| |~#pp~0.base|))) (or .cse0 .cse1 .cse2 .cse3 (= (select .cse4 0) 0) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 (and (= (select .cse4 .cse11) 0) .cse12))) (or .cse0 .cse1 .cse2 .cse3 .cse5 .cse6 .cse13 .cse7 .cse8 .cse9 .cse14 .cse10) (or .cse0 .cse1 .cse2 .cse3 .cse5 (not (= .cse15 1)) (not (= (select (select |old(#memory_int)| |~#pstate~0.base|) |~#pstate~0.offset|) 1)) .cse6 .cse13 .cse7 .cse8 .cse9 .cse14))))) [2021-11-25 19:13:56,604 INFO L858 garLoopResultBuilder]: For program point L38-2(lines 38 44) no Hoare annotation was computed. [2021-11-25 19:13:56,604 INFO L854 garLoopResultBuilder]: At program point L38-3(lines 38 44) the Hoare annotation is: (let ((.cse72 (select |#memory_$Pointer$.offset| |~#pp~0.base|)) (.cse54 (select |old(#memory_$Pointer$.offset)| |~#pp~0.base|)) (.cse64 (+ |~#pp~0.offset| 4))) (let ((.cse20 (select .cse54 .cse64)) (.cse18 (select .cse72 .cse64)) (.cse75 (select |old(#memory_$Pointer$.base)| |~#pp~0.base|)) (.cse63 (select |#memory_$Pointer$.base| |~#pp~0.base|))) (let ((.cse41 (= .cse54 .cse72)) (.cse42 (= .cse75 .cse63)) (.cse65 (= .cse18 0)) (.cse71 (+ |~#pp~0.offset| (* |g_~i~2#1| 4))) (.cse49 (select .cse72 |~#pp~0.offset|)) (.cse68 (not (= (select .cse63 0) 0))) (.cse55 (select |#memory_int| |~#pstate~0.base|)) (.cse52 (+ |~#pstate~0.offset| 4)) (.cse37 (<= |~#pp~0.base| 4)) (.cse74 (select .cse75 0)) (.cse73 (select .cse54 0)) (.cse38 (<= 5 |~#pstate~0.base|)) (.cse59 (= |~#pp~0.offset| 0)) (.cse62 (= |~#pstate~0.offset| 0)) (.cse76 (= .cse20 0)) (.cse70 (= 2 |g_#in~pointer#1.offset|)) (.cse60 (select .cse54 |~#pp~0.offset|))) (let ((.cse45 (+ (* 4 |g_~i~2#1|) |~#pp~0.offset|)) (.cse9 (<= 2 |g_~i~2#1|)) (.cse39 (not (= .cse60 1))) (.cse2 (not .cse70)) (.cse4 (not .cse76)) (.cse35 (and (= (select .cse75 .cse64) 0) .cse76)) (.cse12 (not .cse62)) (.cse13 (not .cse59)) (.cse27 (not .cse38)) (.cse16 (and (= .cse74 0) (= 0 .cse73))) (.cse29 (not .cse37)) (.cse15 (= .cse74 |g_#in~pointer#1.base|)) (.cse50 (= |g_#in~pointer#1.offset| .cse73)) (.cse22 (not (= .cse60 0))) (.cse6 (= |g_~i~2#1| 1)) (.cse36 (select |old(#memory_int)| |~#pstate~0.base|)) (.cse40 (= (select .cse55 .cse52) 1)) (.cse57 (or (not (= 0 (select .cse72 0))) .cse68)) (.cse66 (= .cse49 0)) (.cse47 (= |g_~pointer#1.offset| |g_#in~pointer#1.offset|)) (.cse33 (not (= |g_~pointer#1.offset| (select .cse72 .cse71)))) (.cse67 (not (= |g_~pointer#1.base| (select .cse63 .cse71)))) (.cse53 (or (and .cse62 .cse41 .cse42 .cse37 .cse38 .cse59) (and .cse41 .cse42 .cse65 .cse37 .cse38 .cse59))) (.cse8 (= |#memory_int| |old(#memory_int)|)) (.cse10 (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) (.cse11 (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (.cse7 (= |g_~pointer#1.offset| 2)) (.cse34 (= |g_~pointer#1.base| |g_#in~pointer#1.base|))) (let ((.cse0 (and (let ((.cse69 (= .cse49 1))) (or (and .cse57 .cse62 .cse8 .cse66 .cse10 .cse47 .cse37 (or .cse33 .cse67) .cse38) (and .cse69 .cse10 .cse70 .cse7 .cse53) (and .cse69 .cse8 .cse10 .cse11 .cse70 .cse37 .cse7 .cse38))) .cse59 .cse34)) (.cse5 (and (or (not (= (select .cse63 .cse64) 0)) (not .cse65)) .cse66 .cse10 .cse47 .cse67 .cse53 .cse68 .cse34)) (.cse32 (let ((.cse58 (let ((.cse61 (<= 1 |g_~i~2#1|))) (or (and .cse8 .cse10 .cse11 .cse37 .cse38 .cse61) (and (or (and .cse62 .cse40 .cse8 .cse10 .cse11 (<= 0 |g_~i~2#1|)) (and .cse53 .cse61)) .cse37 .cse38))))) (or (and .cse57 .cse58 .cse10 .cse11 .cse59) (and .cse57 .cse58 (= |g_#in~pointer#1.offset| .cse60) .cse59)))) (.cse30 (let ((.cse56 (@diff .cse36 .cse55))) (and .cse41 .cse42 (= (store .cse36 .cse56 (select .cse55 .cse56)) .cse55) .cse6 (or (= .cse36 .cse55) (and (<= 0 (div (+ |~#pstate~0.offset| (* .cse56 (- 1))) 4)) (= (mod (+ |~#pstate~0.offset| (* .cse56 3)) 4) 0)))))) (.cse1 (and (or .cse13 .cse39 .cse27 .cse2 .cse29) (or .cse13 .cse15 .cse27 .cse16 .cse4 .cse29 .cse22 .cse35) (or .cse12 .cse13 .cse27 .cse16 .cse29 (and .cse15 .cse50) .cse22))) (.cse17 (select .cse55 4)) (.cse31 (select .cse54 4)) (.cse3 (and .cse9 .cse53)) (.cse26 (and .cse9 .cse41 .cse42)) (.cse14 (not (= 5 |~#pstate~0.base|))) (.cse19 (not (= 4 |~#pp~0.base|))) (.cse21 (= ~counter~0 1)) (.cse24 (not (= (select .cse36 .cse52) 1))) (.cse25 (= |g_~i~2#1| 0)) (.cse28 (not (= (select .cse36 |~#pstate~0.offset|) 1))) (.cse43 (= |g_~pointer#1.offset| 1)) (.cse48 (not (= |g_#in~pointer#1.offset| 1))) (.cse23 (and .cse8 .cse10 .cse47 .cse11)) (.cse44 (< 3 .cse45))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (and .cse6 .cse7)) (or (and .cse8 .cse9 .cse10 .cse11) .cse12 .cse13 .cse14 .cse15 .cse16 (and (= 2 .cse17) (= .cse18 |g_#in~pointer#1.offset|)) .cse19 (not (= .cse20 1)) .cse21 .cse22 .cse23 .cse24) (or .cse12 .cse13 (and .cse25 .cse8 .cse10 .cse11) .cse26 .cse27 .cse28 .cse29 .cse30 .cse24) (or (= .cse31 |g_#in~pointer#1.offset|) (and .cse25 .cse11 (or .cse0 .cse5)) .cse1 (and (<= |g_~i~2#1| 1) .cse32 .cse33) .cse3) (or .cse12 .cse13 .cse15 .cse27 .cse16 (and .cse25 .cse32 .cse34) .cse3 .cse29 .cse22 .cse35 .cse30 .cse24) (or (not (= (select .cse36 4) |g_#in~pointer#1.offset|)) .cse1 (and .cse7 (= |g_~pointer#1.offset| .cse17)) .cse14 .cse2 (not (= .cse31 1)) .cse3 .cse19 (not (<= |~#pstate~0.offset| 0)) .cse21 (not (<= 0 |~#pstate~0.offset|))) (or (and .cse25 .cse8 .cse10 .cse11 .cse37 .cse7 .cse38) .cse13 .cse26 .cse39 .cse27 .cse2 .cse29 (and .cse40 .cse41 .cse42 .cse6) .cse24) (let ((.cse46 (= .cse49 |g_#in~pointer#1.offset|))) (or .cse12 .cse13 (and .cse8 .cse10 .cse11 .cse43 .cse34) .cse14 .cse27 (and .cse8 .cse10 .cse11 .cse44 (or .cse33 (not (= .cse45 4)))) .cse28 .cse16 (and .cse40 .cse9 .cse46) (not (= 2 .cse20)) .cse19 (and .cse47 .cse6 .cse46) .cse21 .cse29 (and .cse39 .cse22) .cse48 .cse24)) (let ((.cse51 (exists ((v_ArrVal_2290 (Array Int Int))) (= |#memory_$Pointer$.offset| (store |old(#memory_$Pointer$.offset)| |~#pstate~0.base| v_ArrVal_2290))))) (or (not .cse50) (and .cse9 .cse51 .cse42) (and .cse25 .cse8 .cse10 .cse11 .cse43 .cse34) .cse12 .cse13 (not (= |g_#in~pointer#1.base| 0)) (not .cse15) .cse27 .cse28 .cse4 .cse29 (and .cse51 .cse42 .cse6 .cse43) .cse48 .cse35)) (or .cse12 .cse13 .cse15 .cse27 .cse16 (= .cse20 |g_#in~pointer#1.offset|) .cse29 .cse22 .cse35 .cse23 (and .cse10 .cse11 .cse44)))))))) [2021-11-25 19:13:56,605 INFO L858 garLoopResultBuilder]: For program point gErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2021-11-25 19:13:56,605 INFO L858 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2021-11-25 19:13:56,605 INFO L858 garLoopResultBuilder]: For program point gEXIT(lines 36 45) no Hoare annotation was computed. [2021-11-25 19:13:56,605 INFO L858 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-11-25 19:13:56,605 INFO L858 garLoopResultBuilder]: For program point L39(lines 39 43) no Hoare annotation was computed. [2021-11-25 19:13:56,605 INFO L858 garLoopResultBuilder]: For program point L41-2(line 41) no Hoare annotation was computed. [2021-11-25 19:13:56,605 INFO L854 garLoopResultBuilder]: At program point gENTRY(lines 36 45) the Hoare annotation is: (let ((.cse17 (select |old(#memory_$Pointer$.base)| |~#pp~0.base|)) (.cse10 (select |old(#memory_$Pointer$.offset)| |~#pp~0.base|)) (.cse18 (+ |~#pp~0.offset| 4))) (let ((.cse19 (= (select .cse10 .cse18) 0)) (.cse22 (= |~#pstate~0.offset| 0)) (.cse20 (select |old(#memory_int)| |~#pstate~0.base|)) (.cse23 (= |#memory_int| |old(#memory_int)|)) (.cse24 (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) (.cse25 (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (.cse27 (select .cse10 |~#pp~0.offset|)) (.cse21 (select .cse17 0)) (.cse26 (select .cse10 0))) (let ((.cse5 (and (= .cse21 0) (= 0 .cse26))) (.cse7 (not (= .cse27 0))) (.cse0 (and .cse23 .cse24 .cse25)) (.cse11 (not (= .cse27 1))) (.cse12 (not (= 2 |g_#in~pointer#1.offset|))) (.cse9 (not (= (select .cse20 (+ |~#pstate~0.offset| 4)) 1))) (.cse14 (= |g_#in~pointer#1.offset| .cse26)) (.cse15 (and (= (select (select |#memory_int| |~#pstate~0.base|) |~#pstate~0.offset|) 1) .cse22 .cse23 .cse24 .cse25)) (.cse1 (not .cse22)) (.cse2 (not (= |~#pp~0.offset| 0))) (.cse3 (= .cse21 |g_#in~pointer#1.base|)) (.cse4 (not (<= 5 |~#pstate~0.base|))) (.cse16 (not (= (select .cse20 |~#pstate~0.offset|) 1))) (.cse13 (not .cse19)) (.cse6 (not (<= |~#pp~0.base| 4))) (.cse8 (and (= (select .cse17 .cse18) 0) .cse19))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (or (= (select .cse10 4) |g_#in~pointer#1.offset|) .cse0 (and (or .cse2 .cse11 .cse4 .cse12 .cse6) (or .cse2 .cse3 .cse4 .cse5 .cse13 .cse6 .cse7 .cse8) (or .cse1 .cse2 .cse4 .cse5 .cse6 (and .cse3 .cse14) .cse7))) (or .cse15 .cse1 .cse2 .cse4 .cse16 .cse6 .cse9) (or .cse0 .cse2 .cse11 .cse4 .cse12 .cse6 .cse9) (or (not .cse14) .cse15 .cse1 .cse2 (not (= |g_#in~pointer#1.base| 0)) (not .cse3) .cse4 .cse16 .cse13 .cse6 (not (= |g_#in~pointer#1.offset| 1)) .cse8))))) [2021-11-25 19:13:56,605 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-25 19:13:56,605 INFO L854 garLoopResultBuilder]: At program point L64(line 64) the Hoare annotation is: (let ((.cse18 (select |#memory_$Pointer$.offset| |~#pp~0.base|))) (let ((.cse20 (select |#memory_int| |~#pstate~0.base|)) (.cse21 (select .cse18 |~#pp~0.offset|))) (let ((.cse16 (= .cse21 0)) (.cse17 (not (= (select (select |#memory_$Pointer$.base| |~#pp~0.base|) 0) |ULTIMATE.start_main_~a~0#1.base|))) (.cse1 (= .cse21 1)) (.cse6 (= |ULTIMATE.start_main_~b~0#1.offset| 2)) (.cse0 (= 5 |~#pstate~0.base|)) (.cse2 (<= 2 |ULTIMATE.start_init_~i~0#1|)) (.cse3 (= |ULTIMATE.start_main_~a~0#1.base| 0)) (.cse4 (= |~#pstate~0.offset| 0)) (.cse19 (= (select .cse20 (+ |~#pstate~0.offset| 4)) 1)) (.cse5 (not (= |ULTIMATE.start_main_~b~0#1.offset| 0))) (.cse7 (not (= |ULTIMATE.start_main_~a~0#1.offset| |ULTIMATE.start_main_~b~0#1.offset|))) (.cse8 (= ~counter~0 (+ |ULTIMATE.start_main_~b~0#1.offset| 1))) (.cse9 (= |~#pp~0.offset| 0)) (.cse10 (= |#NULL.offset| 0)) (.cse11 (= |ULTIMATE.start_main_~a~0#1.offset| 1)) (.cse12 (= 4 |~#pp~0.base|)) (.cse13 (= |ULTIMATE.start_main_~b~0#1.base| 0)) (.cse14 (<= 0 |#StackHeapBarrier|)) (.cse15 (= |#NULL.base| 0))) (or (and (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15) (and .cse0 .cse2 .cse3 .cse4 .cse5 .cse16 .cse6 .cse7 .cse8 .cse17 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15)) (not (= |ULTIMATE.start_main_~b~0#1.offset| (select .cse18 4)))) (and .cse0 .cse2 .cse3 .cse4 .cse19 .cse5 .cse16 .cse6 .cse8 .cse17 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse19 .cse5 .cse6 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15) (and .cse0 .cse2 .cse3 (= (select .cse20 |~#pstate~0.offset|) 1) .cse4 .cse19 .cse5 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15))))) [2021-11-25 19:13:56,606 INFO L854 garLoopResultBuilder]: At program point L62(line 62) the Hoare annotation is: (let ((.cse0 (select |#memory_$Pointer$.offset| |~#pp~0.base|)) (.cse1 (* 4 |ULTIMATE.start_init_~i~0#1|))) (and (= 5 |~#pstate~0.base|) (= |ULTIMATE.start_main_~a~0#1.base| 0) (= |~#pstate~0.offset| 0) (= (select .cse0 |~#pp~0.offset|) 0) (= |ULTIMATE.start_main_~b~0#1.offset| 2) (= ~counter~0 (+ |ULTIMATE.start_main_~b~0#1.offset| 1)) (= (select .cse0 (+ |~#pp~0.offset| 4)) 0) (< 3 (+ .cse1 |~#pp~0.offset|)) (not (= .cse1 4)) (= |~#pp~0.offset| 0) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~a~0#1.offset| 1) (= 4 |~#pp~0.base|) (= |ULTIMATE.start_main_~b~0#1.base| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-25 19:13:56,606 INFO L854 garLoopResultBuilder]: At program point L62-1(line 62) the Hoare annotation is: (let ((.cse6 (+ |~#pp~0.offset| 4)) (.cse16 (select |#memory_$Pointer$.offset| |~#pp~0.base|))) (let ((.cse5 (select |#memory_$Pointer$.base| |~#pp~0.base|)) (.cse22 (select .cse16 |~#pp~0.offset|)) (.cse11 (select .cse16 .cse6))) (let ((.cse7 (= .cse11 0)) (.cse0 (= 5 |~#pstate~0.base|)) (.cse1 (<= 2 |ULTIMATE.start_init_~i~0#1|)) (.cse2 (= |ULTIMATE.start_main_~a~0#1.base| 0)) (.cse3 (= |~#pstate~0.offset| 0)) (.cse4 (not (= |ULTIMATE.start_main_~b~0#1.offset| 0))) (.cse8 (= .cse22 0)) (.cse9 (= |ULTIMATE.start_main_~b~0#1.offset| 2)) (.cse10 (= ~counter~0 (+ |ULTIMATE.start_main_~b~0#1.offset| 1))) (.cse12 (not (= (select .cse5 0) |ULTIMATE.start_main_~a~0#1.base|))) (.cse13 (not (= |ULTIMATE.start_main_~a~0#1.offset| 0))) (.cse14 (= |~#pp~0.offset| 0)) (.cse15 (= |#NULL.offset| 0)) (.cse17 (= |ULTIMATE.start_main_~a~0#1.offset| 1)) (.cse18 (= 4 |~#pp~0.base|)) (.cse19 (= |ULTIMATE.start_main_~b~0#1.base| 0)) (.cse20 (<= 0 |#StackHeapBarrier|)) (.cse21 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (or (not (= (select .cse5 .cse6) 0)) (not .cse7)) .cse8 .cse9 .cse10 (not (= |ULTIMATE.start_main_~a~0#1.offset| .cse11)) .cse12 .cse13 .cse14 .cse15 (not (= |ULTIMATE.start_main_~b~0#1.offset| (select .cse16 4))) .cse17 .cse18 .cse19 .cse20 .cse21) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse9 .cse10 .cse7 (= |ULTIMATE.start_main_~a~0#1.offset| .cse22) .cse13 .cse14 .cse15 .cse17 .cse18 (exists ((f_~i~1 Int)) (let ((.cse23 (select |#memory_$Pointer$.offset| |~#pp~0.base|)) (.cse24 (* f_~i~1 4))) (and (= |ULTIMATE.start_main_~a~0#1.offset| (select .cse23 (+ .cse24 |~#pp~0.offset|))) (or (= (* 4 f_~i~1) 0) (= (select .cse23 |~#pp~0.offset|) 0)) (= (select (select |#memory_int| |~#pstate~0.base|) (+ .cse24 |~#pstate~0.offset|)) 1)))) .cse19 .cse20 (= |ULTIMATE.start_main_~a~0#1.base| (select .cse5 |~#pp~0.offset|)) .cse21) (and .cse0 .cse1 .cse2 .cse3 (= (select (select |#memory_int| |~#pstate~0.base|) (+ |~#pstate~0.offset| 4)) 1) .cse4 .cse8 .cse9 .cse10 (= .cse11 1) .cse12 .cse13 .cse14 .cse15 .cse17 .cse18 .cse19 .cse20 .cse21))))) [2021-11-25 19:13:56,606 INFO L854 garLoopResultBuilder]: At program point L58(line 58) the Hoare annotation is: (let ((.cse0 (select |#memory_$Pointer$.offset| |~#pp~0.base|)) (.cse1 (* 4 |ULTIMATE.start_init_~i~0#1|))) (and (= 5 |~#pstate~0.base|) (= |ULTIMATE.start_main_~a~0#1.base| 0) (= |~#pstate~0.offset| 0) (= (select .cse0 |~#pp~0.offset|) 0) (= (select .cse0 (+ |~#pp~0.offset| 4)) 0) (< 3 (+ .cse1 |~#pp~0.offset|)) (not (= .cse1 4)) (= |~#pp~0.offset| 0) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~a~0#1.offset| 1) (= 4 |~#pp~0.base|) (<= 0 |#StackHeapBarrier|) (= ~counter~0 2) (= |#NULL.base| 0))) [2021-11-25 19:13:56,606 INFO L858 garLoopResultBuilder]: For program point L58-1(line 58) no Hoare annotation was computed. [2021-11-25 19:13:56,606 INFO L854 garLoopResultBuilder]: At program point L19-3(lines 19 22) the Hoare annotation is: (let ((.cse10 (select |#memory_$Pointer$.offset| |~#pp~0.base|))) (let ((.cse0 (= 5 |~#pstate~0.base|)) (.cse2 (= (select .cse10 |~#pp~0.offset|) 0)) (.cse3 (= (select .cse10 (+ |~#pp~0.offset| 4)) 0)) (.cse1 (* 4 |ULTIMATE.start_init_~i~0#1|)) (.cse4 (= |~#pp~0.offset| 0)) (.cse5 (= |#NULL.offset| 0)) (.cse6 (= ~counter~0 1)) (.cse7 (= 4 |~#pp~0.base|)) (.cse8 (<= 0 |#StackHeapBarrier|)) (.cse9 (= |#NULL.base| 0))) (or (and .cse0 (= (+ |~#pstate~0.offset| .cse1) 0) .cse2 .cse3 (= .cse1 0) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and .cse0 .cse2 .cse3 (< 3 (+ .cse1 |~#pp~0.offset|)) .cse4 .cse5 .cse6 (<= 0 |~#pstate~0.offset|) (<= |~#pstate~0.offset| 0) .cse7 .cse8 .cse9)))) [2021-11-25 19:13:56,606 INFO L854 garLoopResultBuilder]: At program point L63(line 63) the Hoare annotation is: (let ((.cse2 (select |#memory_$Pointer$.offset| |~#pp~0.base|)) (.cse26 (+ |~#pp~0.offset| 4)) (.cse23 (select |#memory_$Pointer$.base| |~#pp~0.base|))) (let ((.cse3 (select .cse23 0)) (.cse7 (select .cse2 .cse26)) (.cse25 (select .cse2 |~#pp~0.offset|)) (.cse18 (select |#memory_int| |~#pstate~0.base|))) (let ((.cse5 (= (select .cse18 |~#pstate~0.offset|) 1)) (.cse8 (not (= |ULTIMATE.start_main_~b~0#1.offset| 0))) (.cse11 (= |ULTIMATE.start_main_~a~0#1.offset| .cse25)) (.cse0 (= 5 |~#pstate~0.base|)) (.cse1 (<= 2 |ULTIMATE.start_init_~i~0#1|)) (.cse4 (= |ULTIMATE.start_main_~a~0#1.base| 0)) (.cse6 (= |~#pstate~0.offset| 0)) (.cse22 (not (= (select .cse23 .cse26) 0))) (.cse21 (= .cse7 0)) (.cse10 (= .cse25 0)) (.cse9 (= |ULTIMATE.start_main_~b~0#1.offset| 2)) (.cse12 (= ~counter~0 (+ |ULTIMATE.start_main_~b~0#1.offset| 1))) (.cse24 (not (= .cse3 |ULTIMATE.start_main_~a~0#1.base|))) (.cse13 (= |~#pp~0.offset| 0)) (.cse14 (= |#NULL.offset| 0)) (.cse15 (= |ULTIMATE.start_main_~a~0#1.offset| 1)) (.cse16 (= 4 |~#pp~0.base|)) (.cse17 (= |ULTIMATE.start_main_~b~0#1.base| 0)) (.cse19 (<= 0 |#StackHeapBarrier|)) (.cse20 (= |#NULL.base| 0))) (or (and .cse0 .cse1 (or (not (= 0 (select .cse2 0))) (not (= .cse3 0))) .cse4 .cse5 .cse6 (= .cse7 2) .cse8 .cse9 (or .cse10 .cse11) .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 (= (select .cse18 4) 1) .cse19 .cse20) (and .cse0 .cse1 .cse4 .cse5 .cse6 .cse8 .cse9 .cse12 .cse21 .cse11 .cse13 .cse14 .cse15 .cse16 .cse22 .cse17 .cse19 (= |ULTIMATE.start_main_~a~0#1.base| (select .cse23 |~#pp~0.offset|)) .cse20) (and .cse0 .cse1 .cse4 (= (select .cse18 (+ |~#pstate~0.offset| 4)) 1) .cse10 .cse9 .cse12 (= .cse7 1) .cse24 .cse13 .cse14 .cse15 (<= 0 |~#pstate~0.offset|) (<= |~#pstate~0.offset| 0) .cse16 .cse17 .cse19 .cse20) (and .cse0 .cse1 .cse4 .cse6 (or .cse22 (not .cse21)) .cse10 .cse9 .cse12 (not (= |ULTIMATE.start_main_~a~0#1.offset| .cse7)) .cse24 .cse13 .cse14 (not (= |ULTIMATE.start_main_~b~0#1.offset| (select .cse2 4))) .cse15 .cse16 .cse17 .cse19 .cse20))))) [2021-11-25 19:13:56,606 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-25 19:13:56,607 INFO L858 garLoopResultBuilder]: For program point L59(lines 59 60) no Hoare annotation was computed. [2021-11-25 19:13:56,607 INFO L854 garLoopResultBuilder]: At program point L57(line 57) the Hoare annotation is: (let ((.cse0 (select |#memory_$Pointer$.offset| |~#pp~0.base|)) (.cse1 (* 4 |ULTIMATE.start_init_~i~0#1|))) (and (= 5 |~#pstate~0.base|) (= |~#pstate~0.offset| 0) (= (select .cse0 |~#pp~0.offset|) 0) (= (select .cse0 (+ |~#pp~0.offset| 4)) 0) (< 3 (+ .cse1 |~#pp~0.offset|)) (not (= .cse1 4)) (= |~#pp~0.offset| 0) (= |#NULL.offset| 0) (= ~counter~0 1) (= 4 |~#pp~0.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-25 19:13:56,607 INFO L858 garLoopResultBuilder]: For program point L57-1(line 57) no Hoare annotation was computed. [2021-11-25 19:13:56,607 INFO L861 garLoopResultBuilder]: At program point L70(lines 53 71) the Hoare annotation is: true [2021-11-25 19:13:56,607 INFO L858 garLoopResultBuilder]: For program point L66(line 66) no Hoare annotation was computed. [2021-11-25 19:13:56,610 INFO L732 BasicCegarLoop]: Path program histogram: [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:56,612 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 19:13:56,620 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (@diff (Array Int Int) (Array Int Int) Int) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.getBinaryOperator(Term2Expression.java:563) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:248) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translateStore(Term2Expression.java:323) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:157) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:453) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-25 19:13:56,624 INFO L158 Benchmark]: Toolchain (without parser) took 369992.96ms. Allocated memory was 96.5MB in the beginning and 423.6MB in the end (delta: 327.2MB). Free memory was 62.0MB in the beginning and 323.6MB in the end (delta: -261.7MB). Peak memory consumption was 254.0MB. Max. memory is 16.1GB. [2021-11-25 19:13:56,624 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 96.5MB. Free memory was 50.6MB in the beginning and 50.6MB in the end (delta: 43.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:13:56,624 INFO L158 Benchmark]: CACSL2BoogieTranslator took 291.34ms. Allocated memory is still 96.5MB. Free memory was 61.8MB in the beginning and 70.6MB in the end (delta: -8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 19:13:56,624 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.84ms. Allocated memory is still 96.5MB. Free memory was 70.6MB in the beginning and 69.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:13:56,624 INFO L158 Benchmark]: Boogie Preprocessor took 52.83ms. Allocated memory is still 96.5MB. Free memory was 69.1MB in the beginning and 67.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:13:56,625 INFO L158 Benchmark]: RCFGBuilder took 568.21ms. Allocated memory is still 96.5MB. Free memory was 67.6MB in the beginning and 54.8MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 19:13:56,625 INFO L158 Benchmark]: TraceAbstraction took 369036.60ms. Allocated memory was 96.5MB in the beginning and 423.6MB in the end (delta: 327.2MB). Free memory was 54.2MB in the beginning and 323.6MB in the end (delta: -269.4MB). Peak memory consumption was 248.6MB. Max. memory is 16.1GB. [2021-11-25 19:13:56,625 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 96.5MB. Free memory was 50.6MB in the beginning and 50.6MB in the end (delta: 43.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 291.34ms. Allocated memory is still 96.5MB. Free memory was 61.8MB in the beginning and 70.6MB in the end (delta: -8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.84ms. Allocated memory is still 96.5MB. Free memory was 70.6MB in the beginning and 69.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 52.83ms. Allocated memory is still 96.5MB. Free memory was 69.1MB in the beginning and 67.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 568.21ms. Allocated memory is still 96.5MB. Free memory was 67.6MB in the beginning and 54.8MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 369036.60ms. Allocated memory was 96.5MB in the beginning and 423.6MB in the end (delta: 327.2MB). Free memory was 54.2MB in the beginning and 323.6MB in the end (delta: -269.4MB). Peak memory consumption was 248.6MB. 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: 8]: 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 4 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 368.9s, OverallIterations: 22, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 26.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 252.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2405 SdHoareTripleChecker+Valid, 10.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2375 mSDsluCounter, 3073 SdHoareTripleChecker+Invalid, 8.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1045 IncrementalHoareTripleChecker+Unchecked, 3068 mSDsCounter, 1506 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16543 IncrementalHoareTripleChecker+Invalid, 19094 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1506 mSolverCounterUnsat, 569 mSDtfsCounter, 16543 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2718 GetRequests, 1421 SyntacticMatches, 56 SemanticMatches, 1241 ConstructedPredicates, 9 IntricatePredicates, 1 DeprecatedPredicates, 27244 ImplicationChecksByTransitivity, 63.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=249occurred in iteration=12, InterpolantAutomatonStates: 497, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 22 MinimizatonAttempts, 580 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 184 PreInvPairs, 288 NumberOfFragments, 5386 HoareAnnotationTreeSize, 184 FomulaSimplifications, 115104 FormulaSimplificationTreeSizeReduction, 242.9s HoareSimplificationTime, 13 FomulaSimplificationsInter, 4438464 FormulaSimplificationTreeSizeReductionInter, 9.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 21.3s InterpolantComputationTime, 1655 NumberOfCodeBlocks, 1650 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 2114 ConstructedInterpolants, 25 QuantifiedInterpolants, 18235 SizeOfPredicates, 139 NumberOfNonLiveVariables, 6544 ConjunctsInSsa, 649 ConjunctsInUnsatCore, 56 InterpolantComputations, 4 PerfectInterpolantSequences, 746/1200 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 1.9s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 4, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 24, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 22, TOOLS_POST_TIME: 0.9s, TOOLS_POST_CALL_APPLICATIONS: 13, TOOLS_POST_CALL_TIME: 0.4s, TOOLS_POST_RETURN_APPLICATIONS: 8, TOOLS_POST_RETURN_TIME: 0.2s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 43, TOOLS_QUANTIFIERELIM_TIME: 1.5s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.4s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 71, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 12, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 24, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 0.7s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.7s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 8, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME: 0.1s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 209, DAG_COMPRESSION_RETAINED_NODES: 71, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (@diff (Array Int Int) (Array Int Int) Int) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (@diff (Array Int Int) (Array Int Int) Int): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.getBinaryOperator(Term2Expression.java:563) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-25 19:13:56,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/ex3_forlist.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7 --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 33fdb29d081e8788960943f1182fbfb10ca7dcdfe7c31b22aaab16bda45fd1b8 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:13:59,057 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:13:59,060 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:13:59,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:13:59,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:13:59,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:13:59,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:13:59,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:13:59,100 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:13:59,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:13:59,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:13:59,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:13:59,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:13:59,107 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:13:59,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:13:59,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:13:59,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:13:59,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:13:59,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:13:59,117 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:13:59,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:13:59,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:13:59,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:13:59,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:13:59,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:13:59,127 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:13:59,127 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:13:59,128 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:13:59,129 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:13:59,130 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:13:59,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:13:59,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:13:59,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:13:59,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:13:59,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:13:59,134 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:13:59,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:13:59,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:13:59,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:13:59,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:13:59,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:13:59,154 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-25 19:13:59,180 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:13:59,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:13:59,181 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:13:59,181 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:13:59,181 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:13:59,182 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:13:59,182 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:13:59,182 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:13:59,182 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:13:59,183 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:13:59,183 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:13:59,183 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:13:59,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:13:59,184 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:13:59,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:13:59,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:13:59,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:13:59,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:13:59,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:13:59,186 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 19:13:59,186 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 19:13:59,186 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 19:13:59,186 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:13:59,186 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:13:59,187 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:13:59,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:13:59,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:13:59,187 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 19:13:59,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:13:59,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:13:59,188 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:13:59,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:13:59,188 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:13:59,189 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 19:13:59,189 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 19:13:59,189 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:13:59,189 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:13:59,190 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:13:59,190 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33fdb29d081e8788960943f1182fbfb10ca7dcdfe7c31b22aaab16bda45fd1b8 [2021-11-25 19:13:59,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:13:59,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:13:59,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:13:59,609 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:13:59,610 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:13:59,612 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-regression/ex3_forlist.i [2021-11-25 19:13:59,686 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/data/3fe95c663/54c8083f00f546f0900d3e0f8aa5892c/FLAG2da344721 [2021-11-25 19:14:00,162 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:14:00,163 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/sv-benchmarks/c/ldv-regression/ex3_forlist.i [2021-11-25 19:14:00,169 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/data/3fe95c663/54c8083f00f546f0900d3e0f8aa5892c/FLAG2da344721 [2021-11-25 19:14:00,527 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/data/3fe95c663/54c8083f00f546f0900d3e0f8aa5892c [2021-11-25 19:14:00,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:14:00,534 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:14:00,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:14:00,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:14:00,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:14:00,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:14:00" (1/1) ... [2021-11-25 19:14:00,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2db794ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:00, skipping insertion in model container [2021-11-25 19:14:00,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:14:00" (1/1) ... [2021-11-25 19:14:00,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:14:00,575 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:14:00,751 WARN L230 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_e0703a5a-c874-4635-a5d9-c24102178b2e/sv-benchmarks/c/ldv-regression/ex3_forlist.i[293,306] [2021-11-25 19:14:00,797 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:14:00,813 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:14:00,830 WARN L230 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_e0703a5a-c874-4635-a5d9-c24102178b2e/sv-benchmarks/c/ldv-regression/ex3_forlist.i[293,306] [2021-11-25 19:14:00,849 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:14:00,900 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:14:00,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:00 WrapperNode [2021-11-25 19:14:00,900 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:14:00,902 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:14:00,902 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:14:00,902 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:14:00,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:00" (1/1) ... [2021-11-25 19:14:00,930 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:00" (1/1) ... [2021-11-25 19:14:00,960 INFO L137 Inliner]: procedures = 22, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2021-11-25 19:14:00,960 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:14:00,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:14:00,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:14:00,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:14:00,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:00" (1/1) ... [2021-11-25 19:14:00,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:00" (1/1) ... [2021-11-25 19:14:00,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:00" (1/1) ... [2021-11-25 19:14:00,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:00" (1/1) ... [2021-11-25 19:14:01,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:00" (1/1) ... [2021-11-25 19:14:01,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:00" (1/1) ... [2021-11-25 19:14:01,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:00" (1/1) ... [2021-11-25 19:14:01,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:14:01,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:14:01,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:14:01,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:14:01,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:00" (1/1) ... [2021-11-25 19:14:01,038 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:14:01,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:14:01,061 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:14:01,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:14:01,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:14:01,113 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-25 19:14:01,113 INFO L138 BoogieDeclarations]: Found implementation of procedure malloc [2021-11-25 19:14:01,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:14:01,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:14:01,114 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-11-25 19:14:01,114 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-11-25 19:14:01,114 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-11-25 19:14:01,114 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-11-25 19:14:01,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 19:14:01,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-25 19:14:01,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:14:01,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-25 19:14:01,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:14:01,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:14:01,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-25 19:14:01,220 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:14:01,222 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:14:01,494 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:14:01,521 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:14:01,523 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-25 19:14:01,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:14:01 BoogieIcfgContainer [2021-11-25 19:14:01,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:14:01,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:14:01,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:14:01,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:14:01,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:14:00" (1/3) ... [2021-11-25 19:14:01,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37aa4c59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:14:01, skipping insertion in model container [2021-11-25 19:14:01,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:00" (2/3) ... [2021-11-25 19:14:01,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37aa4c59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:14:01, skipping insertion in model container [2021-11-25 19:14:01,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:14:01" (3/3) ... [2021-11-25 19:14:01,539 INFO L111 eAbstractionObserver]: Analyzing ICFG ex3_forlist.i [2021-11-25 19:14:01,544 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:14:01,544 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:14:01,614 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:14:01,621 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 [2021-11-25 19:14:01,621 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:14:01,655 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 28 states have internal predecessors, (38), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-25 19:14:01,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-25 19:14:01,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:01,660 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:14:01,660 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:14:01,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:01,666 INFO L85 PathProgramCache]: Analyzing trace with hash -431383929, now seen corresponding path program 1 times [2021-11-25 19:14:01,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:14:01,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [180370620] [2021-11-25 19:14:01,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:01,676 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:14:01,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:14:01,678 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:14:01,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 19:14:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:01,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-25 19:14:01,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:01,992 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 19:14:01,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:14:01,999 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:14:01,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [180370620] [2021-11-25 19:14:02,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [180370620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:14:02,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:14:02,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:14:02,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380517799] [2021-11-25 19:14:02,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:14:02,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 19:14:02,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:14:02,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 19:14:02,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:14:02,063 INFO L87 Difference]: Start difference. First operand has 38 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 28 states have internal predecessors, (38), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:14:02,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:14:02,086 INFO L93 Difference]: Finished difference Result 71 states and 97 transitions. [2021-11-25 19:14:02,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 19:14:02,089 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 31 [2021-11-25 19:14:02,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:14:02,096 INFO L225 Difference]: With dead ends: 71 [2021-11-25 19:14:02,096 INFO L226 Difference]: Without dead ends: 33 [2021-11-25 19:14:02,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:14:02,103 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:14:02,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:14:02,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-25 19:14:02,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-11-25 19:14:02,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 24 states have internal predecessors, (29), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:14:02,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2021-11-25 19:14:02,146 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 31 [2021-11-25 19:14:02,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:14:02,146 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2021-11-25 19:14:02,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:14:02,147 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2021-11-25 19:14:02,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-25 19:14:02,149 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:02,150 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:14:02,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:02,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:14:02,357 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:14:02,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:02,358 INFO L85 PathProgramCache]: Analyzing trace with hash -621686623, now seen corresponding path program 1 times [2021-11-25 19:14:02,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:14:02,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [669335733] [2021-11-25 19:14:02,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:02,360 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:14:02,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:14:02,366 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:14:02,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 19:14:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:02,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:14:02,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:02,586 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-25 19:14:02,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:14:02,587 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:14:02,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [669335733] [2021-11-25 19:14:02,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [669335733] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:14:02,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:14:02,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:14:02,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272632114] [2021-11-25 19:14:02,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:14:02,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:14:02,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:14:02,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:14:02,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:14:02,592 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:14:02,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:14:02,670 INFO L93 Difference]: Finished difference Result 64 states and 78 transitions. [2021-11-25 19:14:02,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:14:02,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 31 [2021-11-25 19:14:02,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:14:02,673 INFO L225 Difference]: With dead ends: 64 [2021-11-25 19:14:02,673 INFO L226 Difference]: Without dead ends: 35 [2021-11-25 19:14:02,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:14:02,675 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:14:02,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 74 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:14:02,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-25 19:14:02,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2021-11-25 19:14:02,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.25) internal successors, (30), 25 states have internal predecessors, (30), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:14:02,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2021-11-25 19:14:02,685 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 31 [2021-11-25 19:14:02,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:14:02,686 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2021-11-25 19:14:02,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:14:02,686 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2021-11-25 19:14:02,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-25 19:14:02,688 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:02,688 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:14:02,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:02,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:14:02,899 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:14:02,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:02,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1110999905, now seen corresponding path program 1 times [2021-11-25 19:14:02,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:14:02,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [228426230] [2021-11-25 19:14:02,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:02,902 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:14:02,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:14:02,905 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:14:02,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-25 19:14:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:03,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:14:03,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:03,131 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-25 19:14:03,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:03,248 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-25 19:14:03,249 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:14:03,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [228426230] [2021-11-25 19:14:03,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [228426230] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:14:03,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2046809804] [2021-11-25 19:14:03,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:03,254 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:14:03,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:14:03,261 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:14:03,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-25 19:14:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:03,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:14:03,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:03,491 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-25 19:14:03,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:03,573 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-25 19:14:03,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2046809804] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:14:03,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410860759] [2021-11-25 19:14:03,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:03,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:14:03,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:14:03,580 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:14:03,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 19:14:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:03,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:14:03,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:03,724 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:14:03,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:14:03,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410860759] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:14:03,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2021-11-25 19:14:03,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4, 4, 4] total 7 [2021-11-25 19:14:03,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924580227] [2021-11-25 19:14:03,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:14:03,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:14:03,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:14:03,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:14:03,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:14:03,727 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:14:03,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:14:03,814 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2021-11-25 19:14:03,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:14:03,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2021-11-25 19:14:03,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:14:03,821 INFO L225 Difference]: With dead ends: 58 [2021-11-25 19:14:03,821 INFO L226 Difference]: Without dead ends: 39 [2021-11-25 19:14:03,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:14:03,824 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:14:03,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 72 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:14:03,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-25 19:14:03,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2021-11-25 19:14:03,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 25 states have (on average 1.24) internal successors, (31), 26 states have internal predecessors, (31), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:14:03,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2021-11-25 19:14:03,834 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 33 [2021-11-25 19:14:03,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:14:03,835 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2021-11-25 19:14:03,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:14:03,835 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2021-11-25 19:14:03,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-25 19:14:03,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:03,837 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:14:03,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-25 19:14:04,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:04,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:04,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:14:04,451 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:14:04,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:04,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1230450813, now seen corresponding path program 1 times [2021-11-25 19:14:04,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:14:04,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [384906142] [2021-11-25 19:14:04,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:04,453 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:14:04,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:14:04,454 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:14:04,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-25 19:14:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:04,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:14:04,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:04,685 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:14:04,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:04,777 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:14:04,777 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:14:04,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [384906142] [2021-11-25 19:14:04,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [384906142] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:14:04,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1304199226] [2021-11-25 19:14:04,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:04,781 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:14:04,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:14:04,783 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:14:04,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-25 19:14:04,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:04,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:14:04,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:05,037 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:14:05,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:05,110 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:14:05,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1304199226] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:14:05,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215079408] [2021-11-25 19:14:05,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:05,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:14:05,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:14:05,113 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:14:05,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 19:14:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:05,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 19:14:05,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:05,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:14:05,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:14:05,563 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 19:14:05,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:14:05,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215079408] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:14:05,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2021-11-25 19:14:05,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 4, 4, 4] total 11 [2021-11-25 19:14:05,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595143324] [2021-11-25 19:14:05,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:14:05,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:14:05,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:14:05,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:14:05,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-25 19:14:05,568 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:14:06,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:14:06,174 INFO L93 Difference]: Finished difference Result 77 states and 99 transitions. [2021-11-25 19:14:06,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 19:14:06,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 35 [2021-11-25 19:14:06,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:14:06,181 INFO L225 Difference]: With dead ends: 77 [2021-11-25 19:14:06,181 INFO L226 Difference]: Without dead ends: 66 [2021-11-25 19:14:06,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-25 19:14:06,185 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 64 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:14:06,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 123 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 19:14:06,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-11-25 19:14:06,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2021-11-25 19:14:06,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 44 states have internal predecessors, (55), 9 states have call successors, (9), 5 states have call predecessors, (9), 6 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2021-11-25 19:14:06,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2021-11-25 19:14:06,218 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 76 transitions. Word has length 35 [2021-11-25 19:14:06,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:14:06,219 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 76 transitions. [2021-11-25 19:14:06,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:14:06,219 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 76 transitions. [2021-11-25 19:14:06,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 19:14:06,224 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:06,224 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:14:06,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:06,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-25 19:14:06,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:06,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:14:06,832 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:14:06,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:06,833 INFO L85 PathProgramCache]: Analyzing trace with hash -774999411, now seen corresponding path program 1 times [2021-11-25 19:14:06,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:14:06,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [270093804] [2021-11-25 19:14:06,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:06,834 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:14:06,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:14:06,835 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:14:06,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-25 19:14:07,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:07,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:14:07,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:07,095 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 19:14:07,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:07,177 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 19:14:07,178 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:14:07,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [270093804] [2021-11-25 19:14:07,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [270093804] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:14:07,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [465451089] [2021-11-25 19:14:07,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:07,179 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:14:07,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:14:07,180 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:14:07,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-25 19:14:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:07,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:14:07,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:07,432 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 19:14:07,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:07,510 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 19:14:07,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [465451089] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:14:07,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410736541] [2021-11-25 19:14:07,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:07,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:14:07,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:14:07,512 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:14:07,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-25 19:14:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:07,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:14:07,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:07,711 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 19:14:07,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:07,784 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 19:14:07,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410736541] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:14:07,785 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:14:07,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-11-25 19:14:07,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063723666] [2021-11-25 19:14:07,785 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:14:07,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:14:07,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:14:07,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:14:07,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:14:07,787 INFO L87 Difference]: Start difference. First operand 58 states and 76 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-25 19:14:07,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:14:07,949 INFO L93 Difference]: Finished difference Result 114 states and 150 transitions. [2021-11-25 19:14:07,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:14:07,955 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 38 [2021-11-25 19:14:07,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:14:07,957 INFO L225 Difference]: With dead ends: 114 [2021-11-25 19:14:07,957 INFO L226 Difference]: Without dead ends: 61 [2021-11-25 19:14:07,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:14:07,959 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 3 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:14:07,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 146 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:14:07,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-25 19:14:07,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2021-11-25 19:14:07,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 46 states have internal predecessors, (57), 9 states have call successors, (9), 5 states have call predecessors, (9), 6 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2021-11-25 19:14:07,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 78 transitions. [2021-11-25 19:14:07,975 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 78 transitions. Word has length 38 [2021-11-25 19:14:07,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:14:07,976 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 78 transitions. [2021-11-25 19:14:07,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-25 19:14:07,976 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 78 transitions. [2021-11-25 19:14:07,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-25 19:14:07,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:07,979 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:14:07,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:08,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:08,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:08,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:14:08,584 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:14:08,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:08,584 INFO L85 PathProgramCache]: Analyzing trace with hash 2143087823, now seen corresponding path program 2 times [2021-11-25 19:14:08,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:14:08,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [672438561] [2021-11-25 19:14:08,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:14:08,585 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:14:08,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:14:08,586 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:14:08,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-25 19:14:08,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:14:08,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:14:08,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-25 19:14:08,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:09,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-11-25 19:14:09,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 19:14:09,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:14:09,351 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:14:09,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:09,721 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:14:09,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2021-11-25 19:14:09,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2021-11-25 19:14:09,881 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:14:09,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-11-25 19:14:09,886 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:14:09,897 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:14:09,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-11-25 19:14:10,310 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:14:10,311 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:14:10,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [672438561] [2021-11-25 19:14:10,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [672438561] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:14:10,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1899638961] [2021-11-25 19:14:10,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:14:10,312 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:14:10,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:14:10,313 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:14:10,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-25 19:14:10,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:14:10,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:14:10,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-25 19:14:10,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:11,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-11-25 19:14:11,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 19:14:11,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:14:11,691 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:14:11,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:11,858 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:14:11,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2021-11-25 19:14:11,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2021-11-25 19:14:11,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-25 19:14:11,914 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:14:11,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-11-25 19:14:11,917 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:14:11,926 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:14:11,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-11-25 19:14:12,102 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:14:12,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1899638961] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:14:12,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606606582] [2021-11-25 19:14:12,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:14:12,103 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:14:12,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:14:12,104 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:14:12,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-25 19:14:12,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:14:12,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:14:12,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-25 19:14:12,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:12,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-11-25 19:14:12,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 19:14:12,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:14:12,673 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:14:12,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:12,836 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:14:12,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2021-11-25 19:14:12,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2021-11-25 19:14:12,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-25 19:14:12,899 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:14:12,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-11-25 19:14:12,905 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:14:12,915 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:14:12,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-11-25 19:14:13,073 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:14:13,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606606582] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:14:13,073 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:14:13,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 40 [2021-11-25 19:14:13,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593418666] [2021-11-25 19:14:13,074 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:14:13,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-25 19:14:13,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:14:13,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-25 19:14:13,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1402, Unknown=0, NotChecked=0, Total=1560 [2021-11-25 19:14:13,076 INFO L87 Difference]: Start difference. First operand 60 states and 78 transitions. Second operand has 40 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 28 states have internal predecessors, (70), 10 states have call successors, (13), 10 states have call predecessors, (13), 12 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2021-11-25 19:14:16,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:14:16,187 INFO L93 Difference]: Finished difference Result 131 states and 161 transitions. [2021-11-25 19:14:16,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-25 19:14:16,188 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 28 states have internal predecessors, (70), 10 states have call successors, (13), 10 states have call predecessors, (13), 12 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) Word has length 40 [2021-11-25 19:14:16,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:14:16,190 INFO L225 Difference]: With dead ends: 131 [2021-11-25 19:14:16,190 INFO L226 Difference]: Without dead ends: 105 [2021-11-25 19:14:16,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=404, Invalid=2676, Unknown=0, NotChecked=0, Total=3080 [2021-11-25 19:14:16,193 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 184 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:14:16,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 121 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-25 19:14:16,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-11-25 19:14:16,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 93. [2021-11-25 19:14:16,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 69 states have (on average 1.3043478260869565) internal successors, (90), 73 states have internal predecessors, (90), 12 states have call successors, (12), 8 states have call predecessors, (12), 11 states have return successors, (16), 11 states have call predecessors, (16), 8 states have call successors, (16) [2021-11-25 19:14:16,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 118 transitions. [2021-11-25 19:14:16,212 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 118 transitions. Word has length 40 [2021-11-25 19:14:16,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:14:16,212 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 118 transitions. [2021-11-25 19:14:16,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 28 states have internal predecessors, (70), 10 states have call successors, (13), 10 states have call predecessors, (13), 12 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2021-11-25 19:14:16,213 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 118 transitions. [2021-11-25 19:14:16,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-25 19:14:16,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:16,215 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:14:16,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:16,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:16,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-11-25 19:14:16,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:14:16,820 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:14:16,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:16,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1706015329, now seen corresponding path program 1 times [2021-11-25 19:14:16,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:14:16,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [393337026] [2021-11-25 19:14:16,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:16,821 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:14:16,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:14:16,822 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:14:16,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-25 19:14:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:17,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-25 19:14:17,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:17,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:14:17,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:14:17,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:14:17,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 21 [2021-11-25 19:14:17,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:14:17,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2021-11-25 19:14:17,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:14:17,744 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-25 19:14:17,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:17,927 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_632 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_631 (_ BitVec 32))) (= (select (store (select (store |c_#memory_int| |c_~#pp~0.base| v_ArrVal_632) |c_~#pstate~0.base|) (bvadd (_ bv4 32) |c_~#pstate~0.offset|) v_ArrVal_631) |c_~#pstate~0.offset|) (_ bv1 32))) is different from false [2021-11-25 19:14:17,929 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:14:17,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [393337026] [2021-11-25 19:14:17,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [393337026] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:14:17,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1567690138] [2021-11-25 19:14:17,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:17,930 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:14:17,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:14:17,935 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:14:17,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-25 19:14:18,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:18,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-25 19:14:18,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:18,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:14:18,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:14:18,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:14:18,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 21 [2021-11-25 19:14:18,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:14:18,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2021-11-25 19:14:18,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:14:18,944 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:14:18,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:19,082 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_707 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_708 (_ BitVec 32))) (= (select (store (select (store |c_#memory_int| |c_~#pp~0.base| v_ArrVal_707) |c_~#pstate~0.base|) (bvadd (_ bv4 32) |c_~#pstate~0.offset|) v_ArrVal_708) |c_~#pstate~0.offset|) (_ bv1 32))) is different from false [2021-11-25 19:14:19,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1567690138] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:14:19,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386980206] [2021-11-25 19:14:19,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:19,084 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:14:19,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:14:19,087 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:14:19,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-25 19:14:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:19,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-25 19:14:19,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:19,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:14:19,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:14:19,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:14:19,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 21 [2021-11-25 19:14:19,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:14:19,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2021-11-25 19:14:19,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:14:19,788 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-25 19:14:19,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:19,916 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_784 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_783 (_ BitVec 32))) (= (select (store (select (store |c_#memory_int| |c_~#pp~0.base| v_ArrVal_784) |c_~#pstate~0.base|) (bvadd (_ bv4 32) |c_~#pstate~0.offset|) v_ArrVal_783) |c_~#pstate~0.offset|) (_ bv1 32))) is different from false [2021-11-25 19:14:19,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386980206] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:14:19,918 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:14:19,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 12 [2021-11-25 19:14:19,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285604260] [2021-11-25 19:14:19,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:14:19,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 19:14:19,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:14:19,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 19:14:19,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=163, Unknown=10, NotChecked=84, Total=306 [2021-11-25 19:14:19,921 INFO L87 Difference]: Start difference. First operand 93 states and 118 transitions. Second operand has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:14:21,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:14:21,609 INFO L93 Difference]: Finished difference Result 222 states and 282 transitions. [2021-11-25 19:14:21,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-25 19:14:21,610 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2021-11-25 19:14:21,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:14:21,612 INFO L225 Difference]: With dead ends: 222 [2021-11-25 19:14:21,612 INFO L226 Difference]: Without dead ends: 154 [2021-11-25 19:14:21,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 120 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=152, Invalid=536, Unknown=26, NotChecked=156, Total=870 [2021-11-25 19:14:21,614 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 125 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:14:21,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 294 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 314 Invalid, 0 Unknown, 91 Unchecked, 1.3s Time] [2021-11-25 19:14:21,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-11-25 19:14:21,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 95. [2021-11-25 19:14:21,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 72 states have (on average 1.2916666666666667) internal successors, (93), 75 states have internal predecessors, (93), 12 states have call successors, (12), 8 states have call predecessors, (12), 10 states have return successors, (13), 11 states have call predecessors, (13), 8 states have call successors, (13) [2021-11-25 19:14:21,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 118 transitions. [2021-11-25 19:14:21,633 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 118 transitions. Word has length 40 [2021-11-25 19:14:21,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:14:21,634 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 118 transitions. [2021-11-25 19:14:21,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:14:21,634 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 118 transitions. [2021-11-25 19:14:21,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-25 19:14:21,636 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:21,637 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:14:21,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:21,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:22,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:22,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:14:22,240 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:14:22,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:22,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1965354537, now seen corresponding path program 1 times [2021-11-25 19:14:22,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:14:22,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [230380256] [2021-11-25 19:14:22,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:22,241 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:14:22,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:14:22,242 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:14:22,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-25 19:14:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:22,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-25 19:14:22,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:22,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:14:22,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:14:22,690 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 19:14:22,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:22,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-25 19:14:22,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-25 19:14:22,949 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:14:22,949 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:14:22,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [230380256] [2021-11-25 19:14:22,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [230380256] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:14:22,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [483227054] [2021-11-25 19:14:22,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:22,949 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:14:22,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:14:22,955 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:14:22,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-25 19:14:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:23,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-25 19:14:23,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:23,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:14:23,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:14:23,404 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 19:14:23,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:23,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-25 19:14:23,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-25 19:14:23,607 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:14:23,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [483227054] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:14:23,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215955650] [2021-11-25 19:14:23,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:23,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:14:23,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:14:23,609 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:14:23,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-25 19:14:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:23,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 19:14:23,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:23,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:14:24,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:14:24,036 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:14:24,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:24,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-25 19:14:24,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-25 19:14:24,197 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:14:24,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215955650] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:14:24,198 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:14:24,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9, 8, 8, 8] total 15 [2021-11-25 19:14:24,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482693843] [2021-11-25 19:14:24,198 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:14:24,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-25 19:14:24,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:14:24,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-25 19:14:24,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-25 19:14:24,200 INFO L87 Difference]: Start difference. First operand 95 states and 118 transitions. Second operand has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 4 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-25 19:14:26,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:14:26,219 INFO L93 Difference]: Finished difference Result 228 states and 300 transitions. [2021-11-25 19:14:26,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 19:14:26,220 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 4 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 43 [2021-11-25 19:14:26,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:14:26,222 INFO L225 Difference]: With dead ends: 228 [2021-11-25 19:14:26,222 INFO L226 Difference]: Without dead ends: 190 [2021-11-25 19:14:26,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2021-11-25 19:14:26,224 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 96 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:14:26,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 349 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-25 19:14:26,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-25 19:14:26,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 159. [2021-11-25 19:14:26,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 124 states have (on average 1.3387096774193548) internal successors, (166), 129 states have internal predecessors, (166), 18 states have call successors, (18), 12 states have call predecessors, (18), 16 states have return successors, (25), 17 states have call predecessors, (25), 11 states have call successors, (25) [2021-11-25 19:14:26,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 209 transitions. [2021-11-25 19:14:26,264 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 209 transitions. Word has length 43 [2021-11-25 19:14:26,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:14:26,269 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 209 transitions. [2021-11-25 19:14:26,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 4 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-25 19:14:26,269 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 209 transitions. [2021-11-25 19:14:26,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-25 19:14:26,272 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:26,272 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:14:26,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:26,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-25 19:14:26,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:26,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:14:26,875 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:14:26,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:26,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1392073365, now seen corresponding path program 2 times [2021-11-25 19:14:26,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:14:26,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [423028273] [2021-11-25 19:14:26,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:14:26,876 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:14:26,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:14:26,877 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:14:26,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-25 19:14:27,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:14:27,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:14:27,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-25 19:14:27,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:27,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:14:27,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:14:27,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:14:27,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 21 [2021-11-25 19:14:27,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:14:27,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2021-11-25 19:14:27,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:14:27,684 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-25 19:14:27,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:27,837 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1063 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1064 (_ BitVec 32))) (= (select (store (select (store |c_#memory_int| |c_~#pp~0.base| v_ArrVal_1063) |c_~#pstate~0.base|) |c_~#pstate~0.offset| v_ArrVal_1064) (bvadd (_ bv4 32) |c_~#pstate~0.offset|)) (_ bv1 32))) is different from false [2021-11-25 19:14:27,838 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:14:27,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [423028273] [2021-11-25 19:14:27,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [423028273] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:14:27,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1379967473] [2021-11-25 19:14:27,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:14:27,839 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:14:27,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:14:27,840 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:14:27,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-25 19:14:28,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:14:28,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:14:28,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-25 19:14:28,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:28,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:14:28,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:14:28,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:14:28,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 21 [2021-11-25 19:14:28,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:14:28,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2021-11-25 19:14:28,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-25 19:14:28,877 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:14:28,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:28,984 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1138 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (store (select (store |c_#memory_int| |c_~#pp~0.base| v_ArrVal_1138) |c_~#pstate~0.base|) |c_~#pstate~0.offset| (_ bv1 32)) (bvadd (_ bv4 32) |c_~#pstate~0.offset|)) (_ bv1 32))) is different from false [2021-11-25 19:14:28,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1379967473] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:14:28,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194724824] [2021-11-25 19:14:28,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:14:28,986 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:14:28,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:14:28,987 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:14:28,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-25 19:14:29,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:14:29,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:14:29,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-25 19:14:29,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:29,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:14:29,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:14:29,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:14:29,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 21 [2021-11-25 19:14:29,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:14:29,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2021-11-25 19:14:29,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:14:29,580 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-25 19:14:29,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:29,714 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1213 (_ BitVec 32)) (v_ArrVal_1214 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (store (select (store |c_#memory_int| |c_~#pp~0.base| v_ArrVal_1214) |c_~#pstate~0.base|) |c_~#pstate~0.offset| v_ArrVal_1213) (bvadd (_ bv4 32) |c_~#pstate~0.offset|)) (_ bv1 32))) is different from false [2021-11-25 19:14:29,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194724824] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:14:29,716 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:14:29,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 17 [2021-11-25 19:14:29,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549237962] [2021-11-25 19:14:29,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:14:29,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-25 19:14:29,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:14:29,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-25 19:14:29,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=336, Unknown=18, NotChecked=120, Total=552 [2021-11-25 19:14:29,719 INFO L87 Difference]: Start difference. First operand 159 states and 209 transitions. Second operand has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 14 states have internal predecessors, (41), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:14:32,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:14:32,641 INFO L93 Difference]: Finished difference Result 337 states and 433 transitions. [2021-11-25 19:14:32,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-25 19:14:32,646 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 14 states have internal predecessors, (41), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2021-11-25 19:14:32,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:14:32,649 INFO L225 Difference]: With dead ends: 337 [2021-11-25 19:14:32,650 INFO L226 Difference]: Without dead ends: 307 [2021-11-25 19:14:32,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=311, Invalid=1630, Unknown=51, NotChecked=264, Total=2256 [2021-11-25 19:14:32,653 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 200 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 219 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:14:32,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 373 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 490 Invalid, 0 Unknown, 219 Unchecked, 2.1s Time] [2021-11-25 19:14:32,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-11-25 19:14:32,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 205. [2021-11-25 19:14:32,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 162 states have (on average 1.345679012345679) internal successors, (218), 168 states have internal predecessors, (218), 22 states have call successors, (22), 15 states have call predecessors, (22), 20 states have return successors, (27), 21 states have call predecessors, (27), 12 states have call successors, (27) [2021-11-25 19:14:32,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 267 transitions. [2021-11-25 19:14:32,687 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 267 transitions. Word has length 43 [2021-11-25 19:14:32,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:14:32,688 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 267 transitions. [2021-11-25 19:14:32,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 14 states have internal predecessors, (41), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:14:32,688 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 267 transitions. [2021-11-25 19:14:32,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-25 19:14:32,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:32,690 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:14:32,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-11-25 19:14:32,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:33,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:33,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:14:33,316 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:14:33,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:33,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1829145859, now seen corresponding path program 2 times [2021-11-25 19:14:33,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:14:33,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1909324998] [2021-11-25 19:14:33,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:14:33,317 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:14:33,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:14:33,334 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:14:33,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-25 19:14:33,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:14:33,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:14:33,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-25 19:14:33,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:33,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2021-11-25 19:14:33,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 19:14:34,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:14:34,254 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:14:34,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:34,732 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:14:34,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-11-25 19:14:34,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-25 19:14:34,863 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:14:34,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2021-11-25 19:14:34,876 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:14:34,888 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:14:34,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2021-11-25 19:14:35,339 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:14:35,340 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:14:35,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1909324998] [2021-11-25 19:14:35,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1909324998] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:14:35,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1755335147] [2021-11-25 19:14:35,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:14:35,340 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:14:35,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:14:35,341 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:14:35,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-25 19:14:35,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:14:35,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:14:35,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-25 19:14:35,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:36,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2021-11-25 19:14:36,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 19:14:36,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:14:36,750 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:14:36,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:36,984 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:14:36,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-11-25 19:14:36,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-25 19:14:37,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-25 19:14:37,054 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:14:37,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2021-11-25 19:14:37,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:14:37,068 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:14:37,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2021-11-25 19:14:37,315 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:14:37,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1755335147] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:14:37,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653282881] [2021-11-25 19:14:37,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:14:37,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:14:37,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:14:37,317 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:14:37,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-25 19:14:37,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:14:37,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:14:37,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-25 19:14:37,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:37,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2021-11-25 19:14:37,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 19:14:37,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:14:37,985 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:14:37,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:38,236 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:14:38,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-11-25 19:14:38,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-25 19:14:38,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-25 19:14:38,300 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:14:38,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2021-11-25 19:14:38,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:14:38,312 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:14:38,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2021-11-25 19:14:38,546 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:14:38,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653282881] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:14:38,546 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:14:38,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16, 16, 16, 16] total 46 [2021-11-25 19:14:38,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058966114] [2021-11-25 19:14:38,547 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:14:38,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-25 19:14:38,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:14:38,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-25 19:14:38,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1883, Unknown=0, NotChecked=0, Total=2070 [2021-11-25 19:14:38,550 INFO L87 Difference]: Start difference. First operand 205 states and 267 transitions. Second operand has 46 states, 43 states have (on average 2.0) internal successors, (86), 34 states have internal predecessors, (86), 10 states have call successors, (13), 10 states have call predecessors, (13), 12 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2021-11-25 19:14:44,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:14:44,296 INFO L93 Difference]: Finished difference Result 312 states and 398 transitions. [2021-11-25 19:14:44,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-25 19:14:44,300 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 43 states have (on average 2.0) internal successors, (86), 34 states have internal predecessors, (86), 10 states have call successors, (13), 10 states have call predecessors, (13), 12 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) Word has length 43 [2021-11-25 19:14:44,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:14:44,303 INFO L225 Difference]: With dead ends: 312 [2021-11-25 19:14:44,303 INFO L226 Difference]: Without dead ends: 276 [2021-11-25 19:14:44,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1023 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=512, Invalid=3778, Unknown=0, NotChecked=0, Total=4290 [2021-11-25 19:14:44,307 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 226 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:14:44,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 143 Invalid, 1613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-11-25 19:14:44,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-11-25 19:14:44,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 235. [2021-11-25 19:14:44,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 186 states have (on average 1.3440860215053763) internal successors, (250), 193 states have internal predecessors, (250), 25 states have call successors, (25), 17 states have call predecessors, (25), 23 states have return successors, (29), 24 states have call predecessors, (29), 13 states have call successors, (29) [2021-11-25 19:14:44,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 304 transitions. [2021-11-25 19:14:44,335 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 304 transitions. Word has length 43 [2021-11-25 19:14:44,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:14:44,336 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 304 transitions. [2021-11-25 19:14:44,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 43 states have (on average 2.0) internal successors, (86), 34 states have internal predecessors, (86), 10 states have call successors, (13), 10 states have call predecessors, (13), 12 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2021-11-25 19:14:44,336 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 304 transitions. [2021-11-25 19:14:44,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-25 19:14:44,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:44,338 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:14:44,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:44,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-11-25 19:14:44,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:44,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:14:44,948 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:14:44,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:44,948 INFO L85 PathProgramCache]: Analyzing trace with hash 2069113328, now seen corresponding path program 1 times [2021-11-25 19:14:44,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:14:44,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [454486286] [2021-11-25 19:14:44,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:44,949 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:14:44,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:14:44,950 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:14:44,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-25 19:14:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:45,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-25 19:14:45,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:45,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-11-25 19:14:45,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 19:14:45,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-11-25 19:14:45,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 19:14:45,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:14:45,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:14:45,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-25 19:14:45,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-25 19:14:45,866 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:14:45,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:46,362 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:14:46,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2021-11-25 19:14:46,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-11-25 19:14:46,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-25 19:14:46,375 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 19:14:46,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 1 [2021-11-25 19:14:46,484 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:14:46,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2021-11-25 19:14:46,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:14:46,495 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:14:46,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2021-11-25 19:14:46,537 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:14:46,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2021-11-25 19:14:46,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:14:46,549 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:14:46,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2021-11-25 19:14:46,772 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-25 19:14:46,772 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:14:46,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [454486286] [2021-11-25 19:14:46,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [454486286] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:14:46,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1404763404] [2021-11-25 19:14:46,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:46,773 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:14:46,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:14:46,774 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:14:46,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-11-25 19:14:47,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:47,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-25 19:14:47,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:47,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-11-25 19:14:47,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 19:14:47,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-11-25 19:14:47,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 19:14:48,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:14:48,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:14:48,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:14:48,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-25 19:14:48,432 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:14:48,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:48,784 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:14:48,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2021-11-25 19:14:48,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-11-25 19:14:48,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-25 19:14:48,811 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 19:14:48,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 1 [2021-11-25 19:14:48,861 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:14:48,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2021-11-25 19:14:48,868 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:14:48,877 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:14:48,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2021-11-25 19:14:48,917 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:14:48,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2021-11-25 19:14:48,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:14:48,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:14:48,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2021-11-25 19:14:49,065 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-25 19:14:49,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1404763404] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:14:49,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781730667] [2021-11-25 19:14:49,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:49,066 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:14:49,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:14:49,071 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:14:49,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-25 19:14:49,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:49,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-25 19:14:49,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:49,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-11-25 19:14:49,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 19:14:49,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-11-25 19:14:49,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 19:14:50,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:14:50,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:14:50,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:14:50,563 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:14:50,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:50,917 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:14:50,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2021-11-25 19:14:50,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-11-25 19:14:50,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-25 19:14:50,929 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 19:14:50,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 1 [2021-11-25 19:14:50,977 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:14:50,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2021-11-25 19:14:50,979 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:14:50,988 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:14:50,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2021-11-25 19:14:51,022 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:14:51,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2021-11-25 19:14:51,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:14:51,036 INFO L354 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2021-11-25 19:14:51,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 12 [2021-11-25 19:14:51,117 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-25 19:14:51,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781730667] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:14:51,118 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:14:51,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 14, 10, 13, 10] total 43 [2021-11-25 19:14:51,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109609976] [2021-11-25 19:14:51,118 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:14:51,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-11-25 19:14:51,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:14:51,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-11-25 19:14:51,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1638, Unknown=0, NotChecked=0, Total=1806 [2021-11-25 19:14:51,121 INFO L87 Difference]: Start difference. First operand 235 states and 304 transitions. Second operand has 43 states, 39 states have (on average 2.4615384615384617) internal successors, (96), 30 states have internal predecessors, (96), 11 states have call successors, (20), 12 states have call predecessors, (20), 12 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) [2021-11-25 19:14:54,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:14:54,251 INFO L93 Difference]: Finished difference Result 310 states and 398 transitions. [2021-11-25 19:14:54,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-25 19:14:54,252 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 39 states have (on average 2.4615384615384617) internal successors, (96), 30 states have internal predecessors, (96), 11 states have call successors, (20), 12 states have call predecessors, (20), 12 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) Word has length 45 [2021-11-25 19:14:54,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:14:54,255 INFO L225 Difference]: With dead ends: 310 [2021-11-25 19:14:54,256 INFO L226 Difference]: Without dead ends: 286 [2021-11-25 19:14:54,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=351, Invalid=2619, Unknown=0, NotChecked=0, Total=2970 [2021-11-25 19:14:54,258 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 160 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:14:54,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 132 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-25 19:14:54,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-11-25 19:14:54,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 249. [2021-11-25 19:14:54,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 197 states have (on average 1.3401015228426396) internal successors, (264), 205 states have internal predecessors, (264), 26 states have call successors, (26), 18 states have call predecessors, (26), 25 states have return successors, (31), 25 states have call predecessors, (31), 14 states have call successors, (31) [2021-11-25 19:14:54,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 321 transitions. [2021-11-25 19:14:54,295 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 321 transitions. Word has length 45 [2021-11-25 19:14:54,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:14:54,295 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 321 transitions. [2021-11-25 19:14:54,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 39 states have (on average 2.4615384615384617) internal successors, (96), 30 states have internal predecessors, (96), 11 states have call successors, (20), 12 states have call predecessors, (20), 12 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) [2021-11-25 19:14:54,296 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 321 transitions. [2021-11-25 19:14:54,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-25 19:14:54,298 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:54,298 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:14:54,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:54,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:54,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2021-11-25 19:14:54,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:14:54,904 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:14:54,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:54,904 INFO L85 PathProgramCache]: Analyzing trace with hash -965055082, now seen corresponding path program 1 times [2021-11-25 19:14:54,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:14:54,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1915585735] [2021-11-25 19:14:54,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:54,904 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:14:54,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:14:54,905 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:14:54,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-25 19:14:55,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:55,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-25 19:14:55,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:55,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2021-11-25 19:14:55,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-11-25 19:14:55,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2021-11-25 19:14:55,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-11-25 19:14:55,305 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-25 19:14:55,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 26 [2021-11-25 19:14:55,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-11-25 19:14:55,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:14:55,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-25 19:14:55,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-11-25 19:14:55,691 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-25 19:14:55,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 7 [2021-11-25 19:14:55,702 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-25 19:14:55,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 7 [2021-11-25 19:14:56,095 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:14:56,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:15:02,835 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1699 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 32) (select (select (store (store |c_#memory_$Pointer$.offset| |c_~#pp~0.base| (store (select |c_#memory_$Pointer$.offset| |c_~#pp~0.base|) (bvadd |c_~#pp~0.offset| (_ bv4 32) (bvmul |c_ULTIMATE.start_init_~i~0#1| (_ bv4 32))) (_ bv0 32))) |c_~#pstate~0.base| v_ArrVal_1699) |c_~#pp~0.base|) |c_~#pp~0.offset|))) (forall ((v_ArrVal_1700 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store (store |c_#memory_$Pointer$.base| |c_~#pp~0.base| (store (select |c_#memory_$Pointer$.base| |c_~#pp~0.base|) (bvadd |c_~#pp~0.offset| (_ bv4 32) (bvmul |c_ULTIMATE.start_init_~i~0#1| (_ bv4 32))) (_ bv0 32))) |c_~#pstate~0.base| v_ArrVal_1700) |c_~#pp~0.base|) |c_~#pp~0.offset|) (_ bv0 32)))) is different from false [2021-11-25 19:15:02,851 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:15:02,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 42 [2021-11-25 19:15:02,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 76 [2021-11-25 19:15:02,881 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:15:02,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 59 [2021-11-25 19:15:02,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 60 [2021-11-25 19:15:02,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 39 [2021-11-25 19:15:03,571 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-25 19:15:03,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 1 [2021-11-25 19:15:03,630 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 1 not checked. [2021-11-25 19:15:03,631 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:15:03,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1915585735] [2021-11-25 19:15:03,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1915585735] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:15:03,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1607315290] [2021-11-25 19:15:03,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:03,631 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:15:03,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:15:03,632 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:15:03,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2021-11-25 19:15:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:15:03,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-25 19:15:03,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:04,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2021-11-25 19:15:04,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-11-25 19:15:04,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:04,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-25 19:15:04,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 19:15:04,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:15:05,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:05,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-25 19:15:05,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 19:15:05,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:15:05,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:15:05,760 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 19:15:05,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:15:06,209 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1777 (_ BitVec 32)) (v_ArrVal_1778 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store (store |c_#memory_$Pointer$.offset| |c_~#pp~0.base| (store (select |c_#memory_$Pointer$.offset| |c_~#pp~0.base|) (bvadd |c_~#pp~0.offset| (_ bv4 32)) v_ArrVal_1777)) |c_~#pstate~0.base| v_ArrVal_1778) |c_~#pp~0.base|) |c_~#pp~0.offset|) |c_ULTIMATE.start_main_~a~0#1.offset|))) is different from false [2021-11-25 19:15:06,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1607315290] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:15:06,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532893793] [2021-11-25 19:15:06,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:06,212 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:15:06,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:15:06,213 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:15:06,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-25 19:15:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:15:06,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-25 19:15:06,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:06,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2021-11-25 19:15:06,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-11-25 19:15:06,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:06,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-25 19:15:06,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-11-25 19:15:07,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:07,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-11-25 19:15:07,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:07,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2021-11-25 19:15:07,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 19:15:07,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:15:08,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:15:08,063 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 19:15:08,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:15:08,209 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1843 (_ BitVec 32)) (v_ArrVal_1844 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store (store |c_#memory_$Pointer$.offset| |c_~#pp~0.base| (store (select |c_#memory_$Pointer$.offset| |c_~#pp~0.base|) (bvadd |c_~#pp~0.offset| (_ bv4 32)) v_ArrVal_1843)) |c_~#pstate~0.base| v_ArrVal_1844) |c_~#pp~0.base|) |c_~#pp~0.offset|) |c_ULTIMATE.start_main_~a~0#1.offset|))) is different from false [2021-11-25 19:15:08,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532893793] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:15:08,211 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-25 19:15:08,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 20, 20] total 47 [2021-11-25 19:15:08,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244410383] [2021-11-25 19:15:08,211 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-25 19:15:08,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-11-25 19:15:08,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:15:08,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-11-25 19:15:08,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=2268, Unknown=34, NotChecked=300, Total=2862 [2021-11-25 19:15:08,213 INFO L87 Difference]: Start difference. First operand 249 states and 321 transitions. Second operand has 47 states, 46 states have (on average 2.152173913043478) internal successors, (99), 38 states have internal predecessors, (99), 8 states have call successors, (17), 12 states have call predecessors, (17), 11 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2021-11-25 19:15:14,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:15:14,256 INFO L93 Difference]: Finished difference Result 283 states and 356 transitions. [2021-11-25 19:15:14,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 19:15:14,257 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 2.152173913043478) internal successors, (99), 38 states have internal predecessors, (99), 8 states have call successors, (17), 12 states have call predecessors, (17), 11 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 45 [2021-11-25 19:15:14,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:15:14,259 INFO L225 Difference]: With dead ends: 283 [2021-11-25 19:15:14,259 INFO L226 Difference]: Without dead ends: 136 [2021-11-25 19:15:14,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 168 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1243 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=518, Invalid=3873, Unknown=43, NotChecked=396, Total=4830 [2021-11-25 19:15:14,263 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 149 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 168 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:15:14,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 592 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 810 Invalid, 0 Unknown, 168 Unchecked, 3.7s Time] [2021-11-25 19:15:14,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-25 19:15:14,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 122. [2021-11-25 19:15:14,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 97 states have (on average 1.288659793814433) internal successors, (125), 100 states have internal predecessors, (125), 12 states have call successors, (12), 10 states have call predecessors, (12), 12 states have return successors, (12), 11 states have call predecessors, (12), 7 states have call successors, (12) [2021-11-25 19:15:14,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 149 transitions. [2021-11-25 19:15:14,281 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 149 transitions. Word has length 45 [2021-11-25 19:15:14,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:15:14,281 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 149 transitions. [2021-11-25 19:15:14,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 2.152173913043478) internal successors, (99), 38 states have internal predecessors, (99), 8 states have call successors, (17), 12 states have call predecessors, (17), 11 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2021-11-25 19:15:14,282 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 149 transitions. [2021-11-25 19:15:14,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-25 19:15:14,283 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:15:14,283 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:15:14,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2021-11-25 19:15:14,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2021-11-25 19:15:14,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2021-11-25 19:15:14,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:15:14,888 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:15:14,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:15:14,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1293534561, now seen corresponding path program 3 times [2021-11-25 19:15:14,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:15:14,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1387190432] [2021-11-25 19:15:14,888 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:15:14,889 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:15:14,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:15:14,890 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:15:14,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-25 19:15:15,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-25 19:15:15,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:15:15,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 58 conjunts are in the unsatisfiable core [2021-11-25 19:15:15,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:15,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-11-25 19:15:15,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 19:15:15,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-11-25 19:15:15,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 19:15:15,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:15:15,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:15:16,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:16,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-25 19:15:16,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 19:15:16,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:16,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-25 19:15:16,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 19:15:16,415 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-25 19:15:16,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:15:17,590 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1938 (Array (_ BitVec 32) (_ BitVec 32))) (|v_g_~i~2#1_60| (_ BitVec 32)) (v_ArrVal_1939 (Array (_ BitVec 32) (_ BitVec 32))) (v_f_~pointer.offset_179 (_ BitVec 32)) (v_f_~pointer.base_179 (_ BitVec 32))) (let ((.cse4 (bvadd |c_~#pp~0.offset| (_ bv4 32)))) (let ((.cse3 (select (store (store |c_#memory_$Pointer$.offset| |c_~#pp~0.base| (store (select |c_#memory_$Pointer$.offset| |c_~#pp~0.base|) .cse4 v_f_~pointer.offset_179)) |c_~#pstate~0.base| v_ArrVal_1939) |c_~#pp~0.base|)) (.cse1 (bvadd |c_~#pp~0.offset| (bvmul |v_g_~i~2#1_60| (_ bv4 32))))) (let ((.cse0 (select (store (store |c_#memory_$Pointer$.base| |c_~#pp~0.base| (store (select |c_#memory_$Pointer$.base| |c_~#pp~0.base|) .cse4 v_f_~pointer.base_179)) |c_~#pstate~0.base| v_ArrVal_1938) |c_~#pp~0.base|)) (.cse2 (select .cse3 .cse1))) (or (not (= |c_ULTIMATE.start_main_~a~0#1.base| (select .cse0 .cse1))) (not (= .cse2 |c_ULTIMATE.start_main_~a~0#1.offset|)) (and (= |c_ULTIMATE.start_main_~a~0#1.base| (select .cse0 |c_~#pp~0.offset|)) (= .cse2 (select .cse3 |c_~#pp~0.offset|)))))))) is different from false [2021-11-25 19:15:17,594 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:15:17,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1387190432] [2021-11-25 19:15:17,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1387190432] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:15:17,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1888126607] [2021-11-25 19:15:17,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:15:17,595 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:15:17,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:15:17,596 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:15:17,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2021-11-25 19:15:18,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-25 19:15:18,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:15:18,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:15:18,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:18,272 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-25 19:15:18,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:15:18,564 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-25 19:15:18,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1888126607] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:15:18,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366956846] [2021-11-25 19:15:18,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:15:18,565 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:15:18,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:15:18,566 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:15:18,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-11-25 19:15:19,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-25 19:15:19,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:15:19,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:15:19,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:19,923 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-25 19:15:19,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:15:19,988 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-25 19:15:19,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366956846] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:15:19,989 INFO L186 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2021-11-25 19:15:19,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 5, 5, 5, 5] total 25 [2021-11-25 19:15:19,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967077236] [2021-11-25 19:15:19,989 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2021-11-25 19:15:19,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-25 19:15:19,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:15:19,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-25 19:15:19,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=829, Unknown=13, NotChecked=58, Total=992 [2021-11-25 19:15:19,992 INFO L87 Difference]: Start difference. First operand 122 states and 149 transitions. Second operand has 25 states, 23 states have (on average 2.869565217391304) internal successors, (66), 19 states have internal predecessors, (66), 5 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-25 19:15:23,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:15:23,867 INFO L93 Difference]: Finished difference Result 241 states and 297 transitions. [2021-11-25 19:15:23,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-25 19:15:23,872 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 2.869565217391304) internal successors, (66), 19 states have internal predecessors, (66), 5 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 46 [2021-11-25 19:15:23,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:15:23,874 INFO L225 Difference]: With dead ends: 241 [2021-11-25 19:15:23,874 INFO L226 Difference]: Without dead ends: 151 [2021-11-25 19:15:23,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=284, Invalid=2324, Unknown=48, NotChecked=100, Total=2756 [2021-11-25 19:15:23,878 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 121 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:15:23,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 284 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1008 Invalid, 0 Unknown, 109 Unchecked, 2.5s Time] [2021-11-25 19:15:23,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-25 19:15:23,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 133. [2021-11-25 19:15:23,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 109 states have (on average 1.1743119266055047) internal successors, (128), 110 states have internal predecessors, (128), 12 states have call successors, (12), 11 states have call predecessors, (12), 11 states have return successors, (11), 11 states have call predecessors, (11), 7 states have call successors, (11) [2021-11-25 19:15:23,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 151 transitions. [2021-11-25 19:15:23,910 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 151 transitions. Word has length 46 [2021-11-25 19:15:23,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:15:23,911 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 151 transitions. [2021-11-25 19:15:23,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 2.869565217391304) internal successors, (66), 19 states have internal predecessors, (66), 5 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-25 19:15:23,912 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 151 transitions. [2021-11-25 19:15:23,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-25 19:15:23,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:15:23,913 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:15:23,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-11-25 19:15:24,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-11-25 19:15:24,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (35)] Ended with exit code 0 [2021-11-25 19:15:24,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:15:24,540 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:15:24,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:15:24,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1487260017, now seen corresponding path program 4 times [2021-11-25 19:15:24,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:15:24,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666398760] [2021-11-25 19:15:24,541 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:15:24,541 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:15:24,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:15:24,542 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:15:24,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-11-25 19:15:24,728 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:15:24,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:15:24,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:15:24,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:24,809 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 19:15:24,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:15:24,914 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 19:15:24,914 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:15:24,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1666398760] [2021-11-25 19:15:24,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1666398760] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:15:24,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1559471209] [2021-11-25 19:15:24,915 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:15:24,915 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:15:24,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:15:24,916 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:15:24,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2021-11-25 19:15:25,202 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:15:25,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:15:25,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:15:25,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:25,265 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 19:15:25,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:15:25,371 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 19:15:25,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1559471209] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:15:25,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157274883] [2021-11-25 19:15:25,371 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:15:25,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:15:25,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:15:25,373 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:15:25,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-11-25 19:15:25,563 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:15:25,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:15:25,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:15:25,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:25,652 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 19:15:25,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:15:25,733 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 19:15:25,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157274883] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:15:25,733 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:15:25,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2021-11-25 19:15:25,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112380735] [2021-11-25 19:15:25,734 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:15:25,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:15:25,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:15:25,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:15:25,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:15:25,735 INFO L87 Difference]: Start difference. First operand 133 states and 151 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:15:25,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:15:25,929 INFO L93 Difference]: Finished difference Result 164 states and 186 transitions. [2021-11-25 19:15:25,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:15:25,930 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 46 [2021-11-25 19:15:25,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:15:25,931 INFO L225 Difference]: With dead ends: 164 [2021-11-25 19:15:25,931 INFO L226 Difference]: Without dead ends: 99 [2021-11-25 19:15:25,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:15:25,932 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 16 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:15:25,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 154 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:15:25,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-25 19:15:25,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-11-25 19:15:25,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 81 states have (on average 1.1358024691358024) internal successors, (92), 81 states have internal predecessors, (92), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2021-11-25 19:15:25,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 109 transitions. [2021-11-25 19:15:25,945 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 109 transitions. Word has length 46 [2021-11-25 19:15:25,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:15:25,946 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 109 transitions. [2021-11-25 19:15:25,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:15:25,946 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 109 transitions. [2021-11-25 19:15:25,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-25 19:15:25,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:15:25,947 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:15:25,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-11-25 19:15:26,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (38)] Ended with exit code 0 [2021-11-25 19:15:26,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-11-25 19:15:26,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:15:26,569 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:15:26,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:15:26,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1285134251, now seen corresponding path program 1 times [2021-11-25 19:15:26,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:15:26,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1267795732] [2021-11-25 19:15:26,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:26,571 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:15:26,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:15:26,571 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:15:26,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-11-25 19:15:26,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:15:26,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-25 19:15:26,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:26,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2021-11-25 19:15:26,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 19:15:27,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:15:27,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:27,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-25 19:15:27,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 19:15:27,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:15:27,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 19:15:27,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:15:27,944 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 14 refuted. 2 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:15:27,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:15:28,112 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2324 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_$Pointer$.offset| |c_~#pstate~0.base| v_ArrVal_2324) |c_~#pp~0.base|) (bvadd |c_~#pp~0.offset| (_ bv4 32) (bvmul |c_g_~i~2#1| (_ bv4 32)))) |c_g_~pointer#1.offset|))) is different from false [2021-11-25 19:15:28,141 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2324 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= |c_g_#in~pointer#1.offset| (select (select (store |c_#memory_$Pointer$.offset| |c_~#pstate~0.base| v_ArrVal_2324) |c_~#pp~0.base|) (bvadd |c_~#pp~0.offset| (_ bv4 32)))))) is different from false [2021-11-25 19:15:28,150 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2324 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= |c_ULTIMATE.start_main_~a~0#1.offset| (select (select (store |c_#memory_$Pointer$.offset| |c_~#pstate~0.base| v_ArrVal_2324) |c_~#pp~0.base|) (bvadd |c_~#pp~0.offset| (_ bv4 32)))))) is different from false [2021-11-25 19:15:28,166 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:15:28,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1267795732] [2021-11-25 19:15:28,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1267795732] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:15:28,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1795914543] [2021-11-25 19:15:28,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:28,167 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:15:28,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:15:28,168 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:15:28,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2021-11-25 19:15:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:15:28,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-25 19:15:28,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:28,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2021-11-25 19:15:28,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 19:15:28,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:15:28,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:28,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-25 19:15:28,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 19:15:28,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:15:29,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 19:15:29,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:15:29,259 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 16 refuted. 2 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:15:29,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:15:29,284 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2385 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_$Pointer$.offset| |c_~#pstate~0.base| v_ArrVal_2385) |c_~#pp~0.base|) (bvadd |c_~#pp~0.offset| (_ bv4 32) (bvmul |c_g_~i~2#1| (_ bv4 32)))) |c_g_~pointer#1.offset|))) is different from false [2021-11-25 19:15:29,312 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2385 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= |c_g_#in~pointer#1.offset| (select (select (store |c_#memory_$Pointer$.offset| |c_~#pstate~0.base| v_ArrVal_2385) |c_~#pp~0.base|) (bvadd |c_~#pp~0.offset| (_ bv4 32)))))) is different from false [2021-11-25 19:15:29,322 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2385 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= |c_ULTIMATE.start_main_~a~0#1.offset| (select (select (store |c_#memory_$Pointer$.offset| |c_~#pstate~0.base| v_ArrVal_2385) |c_~#pp~0.base|) (bvadd |c_~#pp~0.offset| (_ bv4 32)))))) is different from false [2021-11-25 19:15:29,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1795914543] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:15:29,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913915361] [2021-11-25 19:15:29,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:29,343 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:15:29,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:15:29,344 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:15:29,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-11-25 19:15:29,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:15:29,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-25 19:15:29,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:29,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2021-11-25 19:15:29,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 19:15:29,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:15:30,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:30,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-25 19:15:30,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 19:15:30,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:15:30,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 19:15:30,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:15:30,342 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 16 refuted. 2 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:15:30,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:15:30,368 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2447 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_$Pointer$.offset| |c_~#pstate~0.base| v_ArrVal_2447) |c_~#pp~0.base|) (bvadd |c_~#pp~0.offset| (_ bv4 32) (bvmul |c_g_~i~2#1| (_ bv4 32)))) |c_g_~pointer#1.offset|))) is different from false [2021-11-25 19:15:30,396 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2447 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= |c_g_#in~pointer#1.offset| (select (select (store |c_#memory_$Pointer$.offset| |c_~#pstate~0.base| v_ArrVal_2447) |c_~#pp~0.base|) (bvadd |c_~#pp~0.offset| (_ bv4 32)))))) is different from false [2021-11-25 19:15:30,416 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2447 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_$Pointer$.offset| |c_~#pstate~0.base| v_ArrVal_2447) |c_~#pp~0.base|) (bvadd |c_~#pp~0.offset| (_ bv4 32))) |c_ULTIMATE.start_main_~a~0#1.offset|))) is different from false [2021-11-25 19:15:30,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913915361] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:15:30,446 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:15:30,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 18 [2021-11-25 19:15:30,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146084031] [2021-11-25 19:15:30,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:15:30,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-25 19:15:30,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:15:30,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-25 19:15:30,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=401, Unknown=22, NotChecked=432, Total=930 [2021-11-25 19:15:30,448 INFO L87 Difference]: Start difference. First operand 99 states and 109 transitions. Second operand has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 15 states have internal predecessors, (37), 2 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:15:33,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:15:33,038 INFO L93 Difference]: Finished difference Result 127 states and 136 transitions. [2021-11-25 19:15:33,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-25 19:15:33,039 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 15 states have internal predecessors, (37), 2 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2021-11-25 19:15:33,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:15:33,040 INFO L225 Difference]: With dead ends: 127 [2021-11-25 19:15:33,040 INFO L226 Difference]: Without dead ends: 109 [2021-11-25 19:15:33,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 143 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=171, Invalid=1012, Unknown=43, NotChecked=666, Total=1892 [2021-11-25 19:15:33,042 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 65 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:15:33,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 205 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 543 Invalid, 0 Unknown, 71 Unchecked, 1.9s Time] [2021-11-25 19:15:33,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-25 19:15:33,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 97. [2021-11-25 19:15:33,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 79 states have (on average 1.1139240506329113) internal successors, (88), 79 states have internal predecessors, (88), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2021-11-25 19:15:33,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 105 transitions. [2021-11-25 19:15:33,056 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 105 transitions. Word has length 47 [2021-11-25 19:15:33,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:15:33,056 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 105 transitions. [2021-11-25 19:15:33,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 15 states have internal predecessors, (37), 2 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:15:33,057 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 105 transitions. [2021-11-25 19:15:33,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-25 19:15:33,058 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:15:33,058 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:15:33,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-11-25 19:15:33,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (41)] Forceful destruction successful, exit code 0 [2021-11-25 19:15:33,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2021-11-25 19:15:33,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:15:33,673 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:15:33,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:15:33,674 INFO L85 PathProgramCache]: Analyzing trace with hash 278730410, now seen corresponding path program 1 times [2021-11-25 19:15:33,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:15:33,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22556446] [2021-11-25 19:15:33,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:33,674 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:15:33,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:15:33,676 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:15:33,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-11-25 19:15:33,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:15:33,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-25 19:15:33,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:34,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 19:15:34,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:15:34,998 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-25 19:15:34,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:15:35,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2021-11-25 19:15:35,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-25 19:15:36,029 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-25 19:15:36,029 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:15:36,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [22556446] [2021-11-25 19:15:36,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [22556446] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:15:36,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [669425956] [2021-11-25 19:15:36,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:36,030 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:15:36,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:15:36,031 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:15:36,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (44)] Waiting until timeout for monitored process [2021-11-25 19:15:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:15:36,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-25 19:15:36,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:37,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2021-11-25 19:15:37,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-11-25 19:15:37,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-11-25 19:15:38,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2021-11-25 19:15:38,776 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-11-25 19:15:38,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 21 [2021-11-25 19:15:38,841 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 19:15:38,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:15:39,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [669425956] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:15:39,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725345726] [2021-11-25 19:15:39,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:39,075 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:15:39,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:15:39,076 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:15:39,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-11-25 19:15:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:15:39,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-25 19:15:39,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:40,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 19:15:40,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:15:40,491 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-25 19:15:40,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:15:40,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2021-11-25 19:15:40,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-25 19:15:40,711 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:15:40,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2021-11-25 19:15:42,051 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-25 19:15:42,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725345726] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:15:42,052 INFO L186 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2021-11-25 19:15:42,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 22, 17, 17] total 62 [2021-11-25 19:15:42,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973587834] [2021-11-25 19:15:42,052 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2021-11-25 19:15:42,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2021-11-25 19:15:42,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:15:42,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-11-25 19:15:42,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=3596, Unknown=3, NotChecked=0, Total=3906 [2021-11-25 19:15:42,055 INFO L87 Difference]: Start difference. First operand 97 states and 105 transitions. Second operand has 62 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 42 states have internal predecessors, (117), 14 states have call successors, (20), 12 states have call predecessors, (20), 14 states have return successors, (17), 14 states have call predecessors, (17), 10 states have call successors, (17) [2021-11-25 19:15:45,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:15:45,237 INFO L93 Difference]: Finished difference Result 116 states and 122 transitions. [2021-11-25 19:15:45,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-25 19:15:45,238 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 42 states have internal predecessors, (117), 14 states have call successors, (20), 12 states have call predecessors, (20), 14 states have return successors, (17), 14 states have call predecessors, (17), 10 states have call successors, (17) Word has length 53 [2021-11-25 19:15:45,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:15:45,239 INFO L225 Difference]: With dead ends: 116 [2021-11-25 19:15:45,239 INFO L226 Difference]: Without dead ends: 84 [2021-11-25 19:15:45,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 203 SyntacticMatches, 5 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1963 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=495, Invalid=5661, Unknown=6, NotChecked=0, Total=6162 [2021-11-25 19:15:45,242 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 66 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 249 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:15:45,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 227 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 770 Invalid, 0 Unknown, 249 Unchecked, 2.1s Time] [2021-11-25 19:15:45,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-11-25 19:15:45,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 76. [2021-11-25 19:15:45,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 61 states have (on average 1.0327868852459017) internal successors, (63), 62 states have internal predecessors, (63), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-11-25 19:15:45,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2021-11-25 19:15:45,255 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 53 [2021-11-25 19:15:45,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:15:45,255 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2021-11-25 19:15:45,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 42 states have internal predecessors, (117), 14 states have call successors, (20), 12 states have call predecessors, (20), 14 states have return successors, (17), 14 states have call predecessors, (17), 10 states have call successors, (17) [2021-11-25 19:15:45,256 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2021-11-25 19:15:45,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-25 19:15:45,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:15:45,257 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:15:45,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-11-25 19:15:45,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (44)] Ended with exit code 0 [2021-11-25 19:15:45,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-11-25 19:15:45,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:15:45,871 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:15:45,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:15:45,872 INFO L85 PathProgramCache]: Analyzing trace with hash 2067312549, now seen corresponding path program 2 times [2021-11-25 19:15:45,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:15:45,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1207795176] [2021-11-25 19:15:45,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:15:45,872 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:15:45,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:15:45,874 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:15:45,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-11-25 19:15:46,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:15:46,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:15:46,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-25 19:15:46,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:46,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 19:15:47,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-25 19:15:47,176 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 19:15:47,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:15:47,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-25 19:15:47,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-25 19:15:47,874 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:15:47,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2021-11-25 19:15:48,623 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 22 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-25 19:15:48,623 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:15:48,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1207795176] [2021-11-25 19:15:48,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1207795176] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:15:48,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1335105955] [2021-11-25 19:15:48,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:15:48,624 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:15:48,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:15:48,624 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:15:48,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (47)] Waiting until timeout for monitored process [2021-11-25 19:15:49,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:15:49,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:15:49,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-25 19:15:49,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:50,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2021-11-25 19:15:50,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 19:15:50,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:15:51,367 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 21 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 19:15:51,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:15:51,446 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2835 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_$Pointer$.offset| |c_~#pstate~0.base| v_ArrVal_2835) |c_~#pp~0.base|) (bvadd |c_~#pp~0.offset| (_ bv4 32))) |c_ULTIMATE.start_main_~a~0#1.offset|))) is different from false [2021-11-25 19:15:51,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1335105955] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:15:51,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024688457] [2021-11-25 19:15:51,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:15:51,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:15:51,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:15:51,449 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:15:51,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-11-25 19:15:51,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:15:51,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:15:51,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-25 19:15:51,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:52,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2021-11-25 19:15:52,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 19:15:52,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:15:52,612 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 21 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:15:52,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:15:52,722 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2918 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_$Pointer$.offset| |c_~#pstate~0.base| v_ArrVal_2918) |c_~#pp~0.base|) (bvadd |c_~#pp~0.offset| (_ bv4 32))) |c_ULTIMATE.start_main_~a~0#1.offset|))) is different from false [2021-11-25 19:15:52,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024688457] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:15:52,725 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-25 19:15:52,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 21, 20] total 58 [2021-11-25 19:15:52,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415689417] [2021-11-25 19:15:52,726 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-25 19:15:52,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-11-25 19:15:52,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:15:52,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-11-25 19:15:52,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=3054, Unknown=3, NotChecked=226, Total=3540 [2021-11-25 19:15:52,729 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand has 58 states, 52 states have (on average 2.4038461538461537) internal successors, (125), 43 states have internal predecessors, (125), 13 states have call successors, (18), 10 states have call predecessors, (18), 13 states have return successors, (15), 13 states have call predecessors, (15), 10 states have call successors, (15) [2021-11-25 19:15:56,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:15:56,753 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2021-11-25 19:15:56,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-25 19:15:56,754 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 52 states have (on average 2.4038461538461537) internal successors, (125), 43 states have internal predecessors, (125), 13 states have call successors, (18), 10 states have call predecessors, (18), 13 states have return successors, (15), 13 states have call predecessors, (15), 10 states have call successors, (15) Word has length 58 [2021-11-25 19:15:56,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:15:56,755 INFO L225 Difference]: With dead ends: 86 [2021-11-25 19:15:56,755 INFO L226 Difference]: Without dead ends: 59 [2021-11-25 19:15:56,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 188 SyntacticMatches, 3 SemanticMatches, 74 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1286 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=435, Invalid=4967, Unknown=8, NotChecked=290, Total=5700 [2021-11-25 19:15:56,758 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 57 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 1168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:15:56,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 184 Invalid, 1168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 998 Invalid, 0 Unknown, 138 Unchecked, 3.0s Time] [2021-11-25 19:15:56,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-25 19:15:56,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-11-25 19:15:56,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:15:56,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2021-11-25 19:15:56,766 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 58 [2021-11-25 19:15:56,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:15:56,767 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2021-11-25 19:15:56,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 52 states have (on average 2.4038461538461537) internal successors, (125), 43 states have internal predecessors, (125), 13 states have call successors, (18), 10 states have call predecessors, (18), 13 states have return successors, (15), 13 states have call predecessors, (15), 10 states have call successors, (15) [2021-11-25 19:15:56,768 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2021-11-25 19:15:56,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-25 19:15:56,768 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:15:56,769 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:15:56,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (47)] Forceful destruction successful, exit code 0 [2021-11-25 19:15:56,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-11-25 19:15:57,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2021-11-25 19:15:57,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:15:57,373 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting gErr0ASSERT_VIOLATIONERROR_FUNCTION === [gErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:15:57,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:15:57,374 INFO L85 PathProgramCache]: Analyzing trace with hash -535060263, now seen corresponding path program 1 times [2021-11-25 19:15:57,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:15:57,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615551697] [2021-11-25 19:15:57,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:57,374 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:15:57,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:15:57,375 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:15:57,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-11-25 19:15:57,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:15:57,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-25 19:15:57,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:57,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2021-11-25 19:15:57,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 19:15:58,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:15:58,344 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-25 19:15:58,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 26 [2021-11-25 19:15:58,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 19:15:58,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:15:58,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:15:58,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 19:15:58,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-25 19:15:58,915 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 29 refuted. 2 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:15:58,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:15:59,261 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2985 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= |c_ULTIMATE.start_main_~b~0#1.offset| (select (select (store |c_#memory_$Pointer$.offset| |c_~#pstate~0.base| v_ArrVal_2985) |c_~#pp~0.base|) (bvadd |c_~#pp~0.offset| (_ bv4 32)))))) is different from false [2021-11-25 19:15:59,262 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:15:59,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615551697] [2021-11-25 19:15:59,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [615551697] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:15:59,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [918477929] [2021-11-25 19:15:59,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:59,263 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:15:59,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:15:59,264 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:15:59,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (50)] Waiting until timeout for monitored process [2021-11-25 19:15:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:15:59,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-25 19:15:59,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:59,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2021-11-25 19:16:00,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 19:16:00,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:16:01,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:16:01,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-25 19:16:01,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 19:16:01,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:16:01,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:16:01,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 19:16:01,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:16:01,969 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 31 refuted. 2 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-25 19:16:01,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:16:02,054 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3049 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_$Pointer$.offset| |c_~#pstate~0.base| v_ArrVal_3049) |c_~#pp~0.base|) (bvadd |c_~#pp~0.offset| (_ bv4 32))) |c_ULTIMATE.start_main_~b~0#1.offset|))) is different from false [2021-11-25 19:16:02,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [918477929] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:16:02,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741507804] [2021-11-25 19:16:02,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:16:02,057 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:16:02,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:16:02,059 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:16:02,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-11-25 19:16:02,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:16:02,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-25 19:16:02,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:16:02,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2021-11-25 19:16:02,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 19:16:03,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:16:03,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:16:03,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-25 19:16:03,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 19:16:03,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:16:03,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:16:04,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 19:16:04,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:16:04,526 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 30 refuted. 2 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:16:04,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:16:04,589 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3115 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= |c_ULTIMATE.start_main_~b~0#1.offset| (select (select (store |c_#memory_$Pointer$.offset| |c_~#pstate~0.base| v_ArrVal_3115) |c_~#pp~0.base|) (bvadd |c_~#pp~0.offset| (_ bv4 32)))))) is different from false [2021-11-25 19:16:04,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741507804] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:16:04,590 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:16:04,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 53 [2021-11-25 19:16:04,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842276825] [2021-11-25 19:16:04,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:16:04,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-11-25 19:16:04,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:16:04,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-11-25 19:16:04,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=3095, Unknown=120, NotChecked=348, Total=3782 [2021-11-25 19:16:04,593 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand has 54 states, 50 states have (on average 2.22) internal successors, (111), 42 states have internal predecessors, (111), 11 states have call successors, (18), 8 states have call predecessors, (18), 12 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2021-11-25 19:16:09,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:16:09,184 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2021-11-25 19:16:09,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-25 19:16:09,184 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 50 states have (on average 2.22) internal successors, (111), 42 states have internal predecessors, (111), 11 states have call successors, (18), 8 states have call predecessors, (18), 12 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) Word has length 58 [2021-11-25 19:16:09,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:16:09,184 INFO L225 Difference]: With dead ends: 60 [2021-11-25 19:16:09,184 INFO L226 Difference]: Without dead ends: 0 [2021-11-25 19:16:09,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1519 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=389, Invalid=4997, Unknown=176, NotChecked=444, Total=6006 [2021-11-25 19:16:09,187 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 64 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 153 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:16:09,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 222 Invalid, 1292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1096 Invalid, 0 Unknown, 153 Unchecked, 3.7s Time] [2021-11-25 19:16:09,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-25 19:16:09,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-25 19:16:09,189 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) [2021-11-25 19:16:09,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-25 19:16:09,189 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2021-11-25 19:16:09,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:16:09,190 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-25 19:16:09,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 50 states have (on average 2.22) internal successors, (111), 42 states have internal predecessors, (111), 11 states have call successors, (18), 8 states have call predecessors, (18), 12 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2021-11-25 19:16:09,190 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-25 19:16:09,190 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-25 19:16:09,193 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 19:16:09,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (49)] Ended with exit code 0 [2021-11-25 19:16:09,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2021-11-25 19:16:09,599 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (50)] Ended with exit code 0 [2021-11-25 19:16:09,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:16:09,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-25 19:16:18,057 WARN L227 SmtUtils]: Spent 6.40s on a formula simplification. DAG size of input: 206 DAG size of output: 138 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-25 19:16:18,402 INFO L858 garLoopResultBuilder]: For program point mallocFINAL(lines 48 51) no Hoare annotation was computed. [2021-11-25 19:16:18,402 INFO L858 garLoopResultBuilder]: For program point mallocEXIT(lines 48 51) no Hoare annotation was computed. [2021-11-25 19:16:18,403 INFO L854 garLoopResultBuilder]: At program point mallocENTRY(lines 48 51) the Hoare annotation is: (let ((.cse10 (bvadd |~#pp~0.offset| (_ bv4 32))) (.cse11 (select |#memory_$Pointer$.offset| |~#pp~0.base|)) (.cse9 (select |#memory_$Pointer$.base| |~#pp~0.base|))) (let ((.cse0 (not (= (select .cse9 |~#pp~0.offset|) (_ bv0 32)))) (.cse1 (not (= (select .cse11 |~#pp~0.offset|) (_ bv0 32)))) (.cse2 (not (= (_ bv0 32) |~#pstate~0.offset|))) (.cse3 (not (= |~#pp~0.offset| (_ bv0 32)))) (.cse4 (not (= (_ bv0 32) (select .cse11 .cse10)))) (.cse5 (not (= (_ bv4 32) |~#pp~0.base|))) (.cse6 (not (= (select .cse9 .cse10) (_ bv0 32)))) (.cse7 (= |old(~counter~0)| ~counter~0)) (.cse8 (not (= |~#pstate~0.base| (_ bv5 32))))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (not (= (_ bv2 32) |old(~counter~0)|)) .cse6 .cse7 .cse8) (or .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (not (= |old(~counter~0)| (_ bv1 32))) .cse6 .cse7 .cse8)))) [2021-11-25 19:16:18,403 INFO L858 garLoopResultBuilder]: For program point L28(lines 28 32) no Hoare annotation was computed. [2021-11-25 19:16:18,403 INFO L858 garLoopResultBuilder]: For program point L27-2(lines 27 33) no Hoare annotation was computed. [2021-11-25 19:16:18,403 INFO L854 garLoopResultBuilder]: At program point L27-3(lines 27 33) the Hoare annotation is: (let ((.cse13 (select |old(#memory_$Pointer$.offset)| |~#pp~0.base|)) (.cse5 (bvadd |~#pp~0.offset| (_ bv4 32))) (.cse9 (= f_~pointer.offset |f_#in~pointer.offset|)) (.cse10 (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (.cse11 (= |old(#memory_int)| |#memory_int|)) (.cse12 (= |old(#memory_$Pointer$.base)| |#memory_$Pointer$.base|))) (let ((.cse0 (not (= (_ bv0 32) |~#pstate~0.offset|))) (.cse1 (not (= |~#pp~0.offset| (_ bv0 32)))) (.cse2 (and .cse9 (= f_~i~1 (_ bv0 32)) .cse10 (= f_~pointer.base |f_#in~pointer.base|) .cse11 .cse12)) (.cse6 (not (= (_ bv4 32) |~#pp~0.base|))) (.cse7 (not (= (select .cse13 .cse5) (_ bv0 32)))) (.cse3 (select .cse13 |~#pp~0.offset|)) (.cse8 (not (= |~#pstate~0.base| (_ bv5 32))))) (and (let ((.cse4 (select |old(#memory_$Pointer$.base)| |~#pp~0.base|))) (or .cse0 .cse1 .cse2 (not (= .cse3 (_ bv0 32))) (not (= (select .cse4 .cse5) (_ bv0 32))) .cse6 .cse7 (not (= (_ bv0 32) (select .cse4 |~#pp~0.offset|))) .cse8)) (or .cse0 .cse1 .cse2 (not (= (_ bv1 32) (select (select |old(#memory_int)| |~#pstate~0.base|) |~#pstate~0.offset|))) (and .cse9 (= (_ bv2 32) f_~i~1) .cse10 .cse11 .cse12) .cse6 .cse7 (and .cse9 (= f_~i~1 (_ bv1 32)) .cse10 .cse11 .cse12) (not (= .cse3 (_ bv1 32))) .cse8)))) [2021-11-25 19:16:18,403 INFO L858 garLoopResultBuilder]: For program point L27-4(lines 25 34) no Hoare annotation was computed. [2021-11-25 19:16:18,403 INFO L858 garLoopResultBuilder]: For program point fEXIT(lines 25 34) no Hoare annotation was computed. [2021-11-25 19:16:18,404 INFO L854 garLoopResultBuilder]: At program point fENTRY(lines 25 34) the Hoare annotation is: (let ((.cse9 (select |old(#memory_$Pointer$.offset)| |~#pp~0.base|)) (.cse4 (bvadd |~#pp~0.offset| (_ bv4 32)))) (let ((.cse0 (not (= (_ bv0 32) |~#pstate~0.offset|))) (.cse1 (not (= |~#pp~0.offset| (_ bv0 32)))) (.cse5 (not (= (_ bv4 32) |~#pp~0.base|))) (.cse6 (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#memory_int)| |#memory_int|) (= |old(#memory_$Pointer$.base)| |#memory_$Pointer$.base|))) (.cse7 (not (= (select .cse9 .cse4) (_ bv0 32)))) (.cse2 (select .cse9 |~#pp~0.offset|)) (.cse8 (not (= |~#pstate~0.base| (_ bv5 32))))) (and (let ((.cse3 (select |old(#memory_$Pointer$.base)| |~#pp~0.base|))) (or .cse0 .cse1 (not (= .cse2 (_ bv0 32))) (not (= (select .cse3 .cse4) (_ bv0 32))) .cse5 .cse6 .cse7 (not (= (_ bv0 32) (select .cse3 |~#pp~0.offset|))) .cse8)) (or .cse0 .cse1 (not (= (_ bv1 32) (select (select |old(#memory_int)| |~#pstate~0.base|) |~#pstate~0.offset|))) .cse5 .cse6 .cse7 (not (= .cse2 (_ bv1 32))) .cse8)))) [2021-11-25 19:16:18,404 INFO L858 garLoopResultBuilder]: For program point L38-2(lines 38 44) no Hoare annotation was computed. [2021-11-25 19:16:18,404 INFO L854 garLoopResultBuilder]: At program point L38-3(lines 38 44) the Hoare annotation is: (let ((.cse44 (select |old(#memory_$Pointer$.offset)| |~#pp~0.base|)) (.cse38 (bvadd |~#pp~0.offset| (_ bv4 32)))) (let ((.cse30 (select .cse44 .cse38)) (.cse37 (select |#memory_$Pointer$.offset| |~#pp~0.base|)) (.cse13 (select .cse44 |~#pp~0.offset|))) (let ((.cse19 (= |~#pstate~0.base| (_ bv5 32))) (.cse17 (= (_ bv4 32) |~#pp~0.base|)) (.cse40 (bvadd (_ bv4 32) |~#pstate~0.offset|)) (.cse16 (= |~#pp~0.offset| (_ bv0 32))) (.cse21 (= (_ bv0 32) |~#pstate~0.offset|)) (.cse27 (= |g_#in~pointer#1.offset| .cse13)) (.cse42 (select (select |old(#memory_$Pointer$.base)| |~#pp~0.base|) |~#pp~0.offset|)) (.cse18 (= |g_~i~2#1| (_ bv0 32))) (.cse20 (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (.cse22 (= |old(#memory_int)| |#memory_int|)) (.cse41 (select (select |#memory_$Pointer$.base| |~#pp~0.base|) |~#pp~0.offset|)) (.cse43 (select .cse37 |~#pp~0.offset|)) (.cse23 (= |old(#memory_$Pointer$.base)| |#memory_$Pointer$.base|)) (.cse39 (select |old(#memory_int)| |~#pstate~0.base|)) (.cse36 (= .cse30 (_ bv0 32)))) (let ((.cse11 (not .cse36)) (.cse7 (exists ((v_ArrVal_2832 (Array (_ BitVec 32) (_ BitVec 32)))) (= |#memory_$Pointer$.offset| (store |old(#memory_$Pointer$.offset)| |~#pstate~0.base| v_ArrVal_2832)))) (.cse2 (exists ((v_ArrVal_2595 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |old(#memory_$Pointer$.offset)| |~#pstate~0.base| v_ArrVal_2595) |#memory_$Pointer$.offset|))) (.cse5 (not (= (_ bv1 32) (select .cse39 |~#pstate~0.offset|)))) (.cse8 (and .cse18 .cse20 .cse22 (= .cse41 |g_~pointer#1.base|) (= .cse43 |g_~pointer#1.offset|) .cse23)) (.cse10 (not (= |g_#in~pointer#1.base| .cse42))) (.cse12 (not (= (_ bv0 32) .cse42))) (.cse14 (not .cse27)) (.cse0 (not .cse21)) (.cse3 (= (_ bv2 32) |g_~i~2#1|)) (.cse1 (not .cse16)) (.cse6 (= |g_~i~2#1| (_ bv1 32))) (.cse28 (= (select (select |#memory_int| |~#pstate~0.base|) .cse40) (_ bv1 32))) (.cse26 (= .cse43 .cse13)) (.cse4 (= .cse41 .cse42)) (.cse9 (not .cse17)) (.cse29 (not (= (select .cse39 .cse40) (_ bv1 32)))) (.cse15 (not .cse19)) (.cse25 (= (_ bv0 32) (select .cse37 .cse38)))) (and (or .cse0 .cse1 (and .cse2 .cse3 .cse4) .cse5 (and .cse6 .cse7 (= |g_~pointer#1.offset| (_ bv1 32)) .cse4) .cse8 .cse9 .cse10 .cse11 .cse12 (not (= .cse13 (_ bv1 32))) .cse14 .cse15) (let ((.cse24 (= (_ bv2 32) |g_~pointer#1.offset|))) (or .cse0 .cse1 (and .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24) (and .cse6 .cse25 .cse26 .cse4 .cse24) .cse9 (not (= |g_#in~pointer#1.offset| (_ bv2 32))) .cse11 .cse27 (and .cse26 .cse3 .cse4) .cse15)) (or (and .cse6 .cse28 .cse7 (= |g_#in~pointer#1.offset| |g_~pointer#1.offset|) .cse4) .cse0 (not (= |g_#in~pointer#1.offset| (_ bv1 32))) .cse1 (and .cse28 .cse2 .cse3 .cse4) .cse5 .cse8 .cse9 .cse29 (= |g_#in~pointer#1.offset| .cse30) .cse10 .cse12 .cse14 .cse15) (let ((.cse33 (or (not .cse25) .cse36))) (or (forall ((f_~i~1 (_ BitVec 32))) (let ((.cse32 (select |old(#memory_$Pointer$.offset)| |~#pp~0.base|))) (let ((.cse31 (select .cse32 (bvadd |~#pp~0.offset| (bvmul f_~i~1 (_ bv4 32)))))) (or (not (= (_ bv2 32) .cse31)) (not (= (bvadd (select .cse32 |~#pp~0.offset|) (_ bv1 32)) .cse31)) (not (= |g_#in~pointer#1.offset| .cse31)))))) .cse0 (and .cse33 .cse26 .cse3 .cse4) .cse1 (and .cse6 .cse28 .cse33 .cse26 .cse4) .cse9 .cse29 (and .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 (exists ((f_~i~1 (_ BitVec 32))) (let ((.cse34 (select |#memory_$Pointer$.offset| |~#pp~0.base|))) (let ((.cse35 (select .cse34 (bvadd |~#pp~0.offset| (bvmul f_~i~1 (_ bv4 32)))))) (and (= (bvadd (select .cse34 |~#pp~0.offset|) (_ bv1 32)) .cse35) (= (_ bv2 32) .cse35) (= .cse35 |g_~pointer#1.offset|))))) .cse23) .cse15))))))) [2021-11-25 19:16:18,404 INFO L858 garLoopResultBuilder]: For program point L38-4(lines 36 45) no Hoare annotation was computed. [2021-11-25 19:16:18,404 INFO L858 garLoopResultBuilder]: For program point gErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2021-11-25 19:16:18,404 INFO L858 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2021-11-25 19:16:18,405 INFO L858 garLoopResultBuilder]: For program point gEXIT(lines 36 45) no Hoare annotation was computed. [2021-11-25 19:16:18,405 INFO L858 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-11-25 19:16:18,405 INFO L858 garLoopResultBuilder]: For program point L39(lines 39 43) no Hoare annotation was computed. [2021-11-25 19:16:18,405 INFO L858 garLoopResultBuilder]: For program point L41-2(line 41) no Hoare annotation was computed. [2021-11-25 19:16:18,405 INFO L858 garLoopResultBuilder]: For program point L6(lines 6 9) no Hoare annotation was computed. [2021-11-25 19:16:18,405 INFO L854 garLoopResultBuilder]: At program point gENTRY(lines 36 45) the Hoare annotation is: (let ((.cse26 (select |old(#memory_$Pointer$.offset)| |~#pp~0.base|))) (let ((.cse13 (select .cse26 |~#pp~0.offset|))) (let ((.cse15 (= |g_#in~pointer#1.offset| .cse13)) (.cse18 (select (select |old(#memory_$Pointer$.base)| |~#pp~0.base|) |~#pp~0.offset|)) (.cse19 (select |old(#memory_int)| |~#pstate~0.base|)) (.cse24 (= |~#pp~0.offset| (_ bv0 32))) (.cse23 (= (_ bv4 32) |~#pp~0.base|)) (.cse17 (= |~#pstate~0.base| (_ bv5 32))) (.cse20 (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (.cse25 (= (_ bv0 32) |~#pstate~0.offset|)) (.cse21 (= |old(#memory_int)| |#memory_int|)) (.cse22 (= |old(#memory_$Pointer$.base)| |#memory_$Pointer$.base|)) (.cse16 (select .cse26 (bvadd |~#pp~0.offset| (_ bv4 32))))) (let ((.cse11 (not (= .cse16 (_ bv0 32)))) (.cse6 (and .cse24 .cse23 .cse17 .cse20 .cse25 .cse21 .cse22)) (.cse2 (not .cse25)) (.cse3 (not .cse24)) (.cse8 (not (= (_ bv1 32) (select .cse19 |~#pstate~0.offset|)))) (.cse4 (not .cse23)) (.cse9 (and .cse20 .cse21 .cse22)) (.cse5 (not (= (select .cse19 (bvadd (_ bv4 32) |~#pstate~0.offset|)) (_ bv1 32)))) (.cse10 (not (= |g_#in~pointer#1.base| .cse18))) (.cse12 (not (= (_ bv0 32) .cse18))) (.cse14 (not .cse15)) (.cse7 (not .cse17))) (and (or (forall ((f_~i~1 (_ BitVec 32))) (let ((.cse1 (select |old(#memory_$Pointer$.offset)| |~#pp~0.base|))) (let ((.cse0 (select .cse1 (bvadd |~#pp~0.offset| (bvmul f_~i~1 (_ bv4 32)))))) (or (not (= (_ bv2 32) .cse0)) (not (= (bvadd (select .cse1 |~#pp~0.offset|) (_ bv1 32)) .cse0)) (not (= |g_#in~pointer#1.offset| .cse0)))))) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7) (or .cse2 .cse3 .cse8 .cse4 .cse9 .cse10 .cse11 .cse12 (not (= .cse13 (_ bv1 32))) .cse14 .cse7) (or .cse2 .cse3 .cse4 (not (= |g_#in~pointer#1.offset| (_ bv2 32))) .cse11 .cse15 .cse6 .cse7) (or .cse2 (not (= |g_#in~pointer#1.offset| (_ bv1 32))) .cse3 .cse8 .cse4 .cse9 .cse5 (= |g_#in~pointer#1.offset| .cse16) .cse10 .cse12 .cse14 .cse7)))))) [2021-11-25 19:16:18,406 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-25 19:16:18,406 INFO L854 garLoopResultBuilder]: At program point L64(line 64) the Hoare annotation is: (let ((.cse2 (select |#memory_$Pointer$.offset| |~#pp~0.base|))) (let ((.cse0 (= |~#pp~0.offset| (_ bv0 32))) (.cse1 (= |ULTIMATE.start_main_~a~0#1.base| (_ bv0 32))) (.cse3 (= (_ bv4 32) |~#pp~0.base|)) (.cse5 (select .cse2 |~#pp~0.offset|)) (.cse4 (= |~#pstate~0.base| (_ bv5 32))) (.cse6 (= |ULTIMATE.start_main_~a~0#1.offset| (_ bv1 32))) (.cse7 (= (_ bv0 32) |~#pstate~0.offset|)) (.cse8 (= (_ bv2 32) |ULTIMATE.start_main_~b~0#1.offset|))) (or (and .cse0 .cse1 (= (_ bv0 32) (select .cse2 (bvadd |~#pp~0.offset| (_ bv4 32)))) .cse3 .cse4 (not (= .cse5 |ULTIMATE.start_main_~b~0#1.offset|)) .cse6 .cse7 .cse8) (and .cse0 .cse1 (= (select (select |#memory_int| |~#pstate~0.base|) (bvadd (_ bv4 32) |~#pstate~0.offset|)) (_ bv1 32)) .cse3 (= (bvadd .cse5 (_ bv1 32)) |ULTIMATE.start_main_~b~0#1.offset|) (exists ((f_~i~1 (_ BitVec 32))) (= (select (select |#memory_$Pointer$.offset| |~#pp~0.base|) (bvadd |~#pp~0.offset| (bvmul f_~i~1 (_ bv4 32)))) |ULTIMATE.start_main_~b~0#1.offset|)) .cse4 .cse6 .cse7 .cse8)))) [2021-11-25 19:16:18,406 INFO L854 garLoopResultBuilder]: At program point L62(line 62) the Hoare annotation is: (let ((.cse0 (select |#memory_$Pointer$.base| |~#pp~0.base|)) (.cse1 (bvadd |~#pp~0.offset| (_ bv4 32))) (.cse2 (select |#memory_$Pointer$.offset| |~#pp~0.base|))) (and (= (select .cse0 .cse1) (_ bv0 32)) (= |~#pp~0.offset| (_ bv0 32)) (= (select .cse0 |~#pp~0.offset|) (_ bv0 32)) (= |ULTIMATE.start_main_~a~0#1.base| (_ bv0 32)) (= (_ bv0 32) (select .cse2 .cse1)) (= (_ bv4 32) |~#pp~0.base|) (= (select .cse2 |~#pp~0.offset|) (_ bv0 32)) (= |~#pstate~0.base| (_ bv5 32)) (= |ULTIMATE.start_main_~a~0#1.offset| (_ bv1 32)) (= (_ bv0 32) |~#pstate~0.offset|) (= |ULTIMATE.start_main_~b~0#1.base| (_ bv0 32)) (not (= |ULTIMATE.start_main_~a~0#1.offset| ~counter~0)) (= (_ bv2 32) |ULTIMATE.start_main_~b~0#1.offset|))) [2021-11-25 19:16:18,406 INFO L854 garLoopResultBuilder]: At program point L62-1(line 62) the Hoare annotation is: (let ((.cse0 (select |#memory_$Pointer$.offset| |~#pp~0.base|))) (and (= |~#pp~0.offset| (_ bv0 32)) (= |ULTIMATE.start_main_~a~0#1.base| (_ bv0 32)) (= (_ bv0 32) (select .cse0 (bvadd |~#pp~0.offset| (_ bv4 32)))) (= (_ bv4 32) |~#pp~0.base|) (= (select (select |#memory_int| |~#pstate~0.base|) |~#pstate~0.offset|) (_ bv1 32)) (= |~#pstate~0.base| (_ bv5 32)) (= |ULTIMATE.start_main_~a~0#1.base| (select (select |#memory_$Pointer$.base| |~#pp~0.base|) |~#pp~0.offset|)) (= |ULTIMATE.start_main_~a~0#1.offset| (_ bv1 32)) (= (_ bv0 32) |~#pstate~0.offset|) (= (select .cse0 |~#pp~0.offset|) (_ bv1 32)) (= (_ bv2 32) |ULTIMATE.start_main_~b~0#1.offset|))) [2021-11-25 19:16:18,407 INFO L854 garLoopResultBuilder]: At program point L58(line 58) the Hoare annotation is: (let ((.cse0 (select |#memory_$Pointer$.base| |~#pp~0.base|)) (.cse1 (bvadd |~#pp~0.offset| (_ bv4 32))) (.cse2 (select |#memory_$Pointer$.offset| |~#pp~0.base|))) (and (= (select .cse0 .cse1) (_ bv0 32)) (= |~#pp~0.offset| (_ bv0 32)) (= (select .cse0 |~#pp~0.offset|) (_ bv0 32)) (= |ULTIMATE.start_main_~a~0#1.base| (_ bv0 32)) (= (_ bv0 32) (select .cse2 .cse1)) (= (_ bv4 32) |~#pp~0.base|) (= (select .cse2 |~#pp~0.offset|) (_ bv0 32)) (= |~#pstate~0.base| (_ bv5 32)) (= (bvadd |ULTIMATE.start_main_~a~0#1.offset| (_ bv1 32)) ~counter~0) (= |ULTIMATE.start_main_~a~0#1.offset| (_ bv1 32)) (= (_ bv0 32) |~#pstate~0.offset|))) [2021-11-25 19:16:18,407 INFO L858 garLoopResultBuilder]: For program point L58-1(line 58) no Hoare annotation was computed. [2021-11-25 19:16:18,407 INFO L858 garLoopResultBuilder]: For program point L19-2(lines 19 22) no Hoare annotation was computed. [2021-11-25 19:16:18,407 INFO L858 garLoopResultBuilder]: For program point L17(lines 17 23) no Hoare annotation was computed. [2021-11-25 19:16:18,407 INFO L854 garLoopResultBuilder]: At program point L19-3(lines 19 22) the Hoare annotation is: (let ((.cse0 (select |#memory_$Pointer$.base| |~#pp~0.base|)) (.cse1 (bvadd |~#pp~0.offset| (_ bv4 32))) (.cse2 (select |#memory_$Pointer$.offset| |~#pp~0.base|))) (and (= (select .cse0 .cse1) (_ bv0 32)) (= |~#pp~0.offset| (_ bv0 32)) (= (select .cse0 |~#pp~0.offset|) (_ bv0 32)) (= (_ bv0 32) (select .cse2 .cse1)) (= ~counter~0 (_ bv1 32)) (= (_ bv4 32) |~#pp~0.base|) (= (select .cse2 |~#pp~0.offset|) (_ bv0 32)) (= |~#pstate~0.base| (_ bv5 32)) (= (_ bv0 32) |~#pstate~0.offset|))) [2021-11-25 19:16:18,407 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-25 19:16:18,407 INFO L854 garLoopResultBuilder]: At program point L63(line 63) the Hoare annotation is: (let ((.cse11 (select |#memory_int| |~#pstate~0.base|)) (.cse12 (select |#memory_$Pointer$.offset| |~#pp~0.base|))) (let ((.cse2 (select .cse12 (bvadd |~#pp~0.offset| (_ bv4 32)))) (.cse0 (= |~#pp~0.offset| (_ bv0 32))) (.cse1 (= |ULTIMATE.start_main_~a~0#1.base| (_ bv0 32))) (.cse3 (= (_ bv4 32) |~#pp~0.base|)) (.cse4 (= (select .cse11 |~#pstate~0.offset|) (_ bv1 32))) (.cse5 (= |~#pstate~0.base| (_ bv5 32))) (.cse6 (= (select .cse12 |~#pp~0.offset|) |ULTIMATE.start_main_~a~0#1.offset|)) (.cse7 (= |ULTIMATE.start_main_~a~0#1.base| (select (select |#memory_$Pointer$.base| |~#pp~0.base|) |~#pp~0.offset|))) (.cse8 (= |ULTIMATE.start_main_~a~0#1.offset| (_ bv1 32))) (.cse9 (= (_ bv0 32) |~#pstate~0.offset|)) (.cse10 (= (_ bv2 32) |ULTIMATE.start_main_~b~0#1.offset|))) (or (and .cse0 .cse1 (= (_ bv0 32) .cse2) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10) (and (= (_ bv2 32) .cse2) .cse0 .cse1 (= (select .cse11 (bvadd (_ bv4 32) |~#pstate~0.offset|)) (_ bv1 32)) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10)))) [2021-11-25 19:16:18,407 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-25 19:16:18,407 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-25 19:16:18,408 INFO L858 garLoopResultBuilder]: For program point L59(lines 59 60) no Hoare annotation was computed. [2021-11-25 19:16:18,408 INFO L854 garLoopResultBuilder]: At program point L57(line 57) the Hoare annotation is: (let ((.cse0 (select |#memory_$Pointer$.base| |~#pp~0.base|)) (.cse1 (bvadd |~#pp~0.offset| (_ bv4 32))) (.cse2 (select |#memory_$Pointer$.offset| |~#pp~0.base|))) (and (= (select .cse0 .cse1) (_ bv0 32)) (= |~#pp~0.offset| (_ bv0 32)) (= (select .cse0 |~#pp~0.offset|) (_ bv0 32)) (= (_ bv0 32) (select .cse2 .cse1)) (= ~counter~0 (_ bv1 32)) (= (_ bv4 32) |~#pp~0.base|) (= (select .cse2 |~#pp~0.offset|) (_ bv0 32)) (= |~#pstate~0.base| (_ bv5 32)) (= (_ bv0 32) |~#pstate~0.offset|))) [2021-11-25 19:16:18,408 INFO L858 garLoopResultBuilder]: For program point L57-1(line 57) no Hoare annotation was computed. [2021-11-25 19:16:18,408 INFO L861 garLoopResultBuilder]: At program point L70(lines 53 71) the Hoare annotation is: true [2021-11-25 19:16:18,408 INFO L858 garLoopResultBuilder]: For program point L66(line 66) no Hoare annotation was computed. [2021-11-25 19:16:18,411 INFO L732 BasicCegarLoop]: Path program histogram: [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:16:18,413 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 19:16:18,442 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,443 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_2595,QUANTIFIED] [2021-11-25 19:16:18,443 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,443 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,443 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,444 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,444 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,444 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_2832,QUANTIFIED] [2021-11-25 19:16:18,444 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,444 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,445 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,445 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,445 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,446 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,446 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,447 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,447 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,447 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,448 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,448 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,451 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,452 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,452 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,453 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,453 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,454 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,454 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,459 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,460 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,460 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,460 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,461 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,461 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,461 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,462 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,462 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,463 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,464 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,465 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_2832,QUANTIFIED] [2021-11-25 19:16:18,466 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,466 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,467 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,467 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_2595,QUANTIFIED] [2021-11-25 19:16:18,467 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,468 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,468 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,468 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,469 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,469 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,469 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,470 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,470 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,473 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,473 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,473 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,474 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,475 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,475 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[f_~i~1,QUANTIFIED] [2021-11-25 19:16:18,475 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,476 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,476 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[f_~i~1,QUANTIFIED] [2021-11-25 19:16:18,476 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,477 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[f_~i~1,QUANTIFIED] [2021-11-25 19:16:18,477 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,478 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,479 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,479 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,482 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,484 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,490 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,490 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,491 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,491 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,491 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,492 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,492 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,493 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,494 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,496 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,497 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[f_~i~1,QUANTIFIED] [2021-11-25 19:16:18,497 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,498 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[f_~i~1,QUANTIFIED] [2021-11-25 19:16:18,498 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,499 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[f_~i~1,QUANTIFIED] [2021-11-25 19:16:18,499 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,499 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,519 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,519 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_2595,QUANTIFIED] [2021-11-25 19:16:18,520 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,520 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,521 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,521 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,521 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,522 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_2832,QUANTIFIED] [2021-11-25 19:16:18,522 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,522 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,523 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,529 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,529 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,530 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,530 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,530 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,530 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,531 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,531 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,531 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,532 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,532 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,532 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,533 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,533 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,533 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,534 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,534 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,534 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,535 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,535 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,535 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,536 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,536 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,536 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,537 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,537 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,537 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,538 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_2832,QUANTIFIED] [2021-11-25 19:16:18,538 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,538 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,539 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,540 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_2595,QUANTIFIED] [2021-11-25 19:16:18,541 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,541 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,541 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,541 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,541 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,542 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,542 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,542 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,542 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,543 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,543 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,543 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,544 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,544 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,544 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[f_~i~1,QUANTIFIED] [2021-11-25 19:16:18,545 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,545 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,545 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[f_~i~1,QUANTIFIED] [2021-11-25 19:16:18,546 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,546 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[f_~i~1,QUANTIFIED] [2021-11-25 19:16:18,546 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,546 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,547 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,547 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,547 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,548 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,548 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,548 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,549 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,549 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,549 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,550 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,550 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,550 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,551 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,551 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,551 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[f_~i~1,QUANTIFIED] [2021-11-25 19:16:18,551 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,552 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[f_~i~1,QUANTIFIED] [2021-11-25 19:16:18,552 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,552 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[f_~i~1,QUANTIFIED] [2021-11-25 19:16:18,553 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,553 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,561 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,562 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,562 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,563 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,563 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,563 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,563 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,564 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,564 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,564 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,565 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,565 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,565 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,565 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,566 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,566 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,566 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,567 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,567 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,567 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,567 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,568 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,570 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,570 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,570 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,571 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,571 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,571 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,571 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,572 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,572 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,572 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,573 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,573 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,573 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,573 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,574 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,574 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,574 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,575 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,575 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,575 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,575 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,576 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,578 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,578 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,579 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,579 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,580 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,580 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,580 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,581 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 07:16:18 BoogieIcfgContainer [2021-11-25 19:16:18,582 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 19:16:18,583 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 19:16:18,583 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 19:16:18,583 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 19:16:18,584 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:14:01" (3/4) ... [2021-11-25 19:16:18,598 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-25 19:16:18,609 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure malloc [2021-11-25 19:16:18,609 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2021-11-25 19:16:18,609 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure g [2021-11-25 19:16:18,615 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-11-25 19:16:18,617 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-25 19:16:18,618 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-25 19:16:18,618 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-25 19:16:18,653 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((!(0bv32 == pstate) || !(pp == 0bv32)) || (((((pointer == pointer && i == 0bv32) && #memory_$Pointer$ == \old(#memory_$Pointer$)) && pointer == pointer) && \old(unknown-#memory_int-unknown) == unknown-#memory_int-unknown) && \old(#memory_$Pointer$) == #memory_$Pointer$)) || !(\old(#memory_$Pointer$)[pp][pp] == 0bv32)) || !(\old(#memory_$Pointer$)[pp][~bvadd64(pp, 4bv32)] == 0bv32)) || !(4bv32 == pp)) || !(\old(#memory_$Pointer$)[pp][~bvadd64(pp, 4bv32)] == 0bv32)) || !(0bv32 == \old(#memory_$Pointer$)[pp][pp])) || !(pstate == 5bv32)) && (((((((((!(0bv32 == pstate) || !(pp == 0bv32)) || (((((pointer == pointer && i == 0bv32) && #memory_$Pointer$ == \old(#memory_$Pointer$)) && pointer == pointer) && \old(unknown-#memory_int-unknown) == unknown-#memory_int-unknown) && \old(#memory_$Pointer$) == #memory_$Pointer$)) || !(1bv32 == \old(unknown-#memory_int-unknown)[pstate][pstate])) || ((((pointer == pointer && 2bv32 == i) && #memory_$Pointer$ == \old(#memory_$Pointer$)) && \old(unknown-#memory_int-unknown) == unknown-#memory_int-unknown) && \old(#memory_$Pointer$) == #memory_$Pointer$)) || !(4bv32 == pp)) || !(\old(#memory_$Pointer$)[pp][~bvadd64(pp, 4bv32)] == 0bv32)) || ((((pointer == pointer && i == 1bv32) && #memory_$Pointer$ == \old(#memory_$Pointer$)) && \old(unknown-#memory_int-unknown) == unknown-#memory_int-unknown) && \old(#memory_$Pointer$) == #memory_$Pointer$)) || !(\old(#memory_$Pointer$)[pp][pp] == 1bv32)) || !(pstate == 5bv32)) [2021-11-25 19:16:18,654 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((!(0bv32 == pstate) || !(pp == 0bv32)) || (((\exists v_ArrVal_2595 : [bv32]bv32 :: \old(#memory_$Pointer$)[pstate := v_ArrVal_2595] == #memory_$Pointer$) && 2bv32 == i) && #memory_$Pointer$[pp][pp] == \old(#memory_$Pointer$)[pp][pp])) || !(1bv32 == \old(unknown-#memory_int-unknown)[pstate][pstate])) || (((i == 1bv32 && (\exists v_ArrVal_2832 : [bv32]bv32 :: #memory_$Pointer$ == \old(#memory_$Pointer$)[pstate := v_ArrVal_2832])) && pointer == 1bv32) && #memory_$Pointer$[pp][pp] == \old(#memory_$Pointer$)[pp][pp])) || (((((i == 0bv32 && #memory_$Pointer$ == \old(#memory_$Pointer$)) && \old(unknown-#memory_int-unknown) == unknown-#memory_int-unknown) && #memory_$Pointer$[pp][pp] == pointer) && #memory_$Pointer$[pp][pp] == pointer) && \old(#memory_$Pointer$) == #memory_$Pointer$)) || !(4bv32 == pp)) || !(pointer == \old(#memory_$Pointer$)[pp][pp])) || !(\old(#memory_$Pointer$)[pp][~bvadd64(pp, 4bv32)] == 0bv32)) || !(0bv32 == \old(#memory_$Pointer$)[pp][pp])) || !(\old(#memory_$Pointer$)[pp][pp] == 1bv32)) || !(pointer == \old(#memory_$Pointer$)[pp][pp])) || !(pstate == 5bv32)) && (((((((((!(0bv32 == pstate) || !(pp == 0bv32)) || ((((((((pp == 0bv32 && 4bv32 == pp) && i == 0bv32) && pstate == 5bv32) && #memory_$Pointer$ == \old(#memory_$Pointer$)) && 0bv32 == pstate) && \old(unknown-#memory_int-unknown) == unknown-#memory_int-unknown) && \old(#memory_$Pointer$) == #memory_$Pointer$) && 2bv32 == pointer)) || ((((i == 1bv32 && 0bv32 == #memory_$Pointer$[pp][~bvadd64(pp, 4bv32)]) && #memory_$Pointer$[pp][pp] == \old(#memory_$Pointer$)[pp][pp]) && #memory_$Pointer$[pp][pp] == \old(#memory_$Pointer$)[pp][pp]) && 2bv32 == pointer)) || !(4bv32 == pp)) || !(pointer == 2bv32)) || !(\old(#memory_$Pointer$)[pp][~bvadd64(pp, 4bv32)] == 0bv32)) || pointer == \old(#memory_$Pointer$)[pp][pp]) || ((#memory_$Pointer$[pp][pp] == \old(#memory_$Pointer$)[pp][pp] && 2bv32 == i) && #memory_$Pointer$[pp][pp] == \old(#memory_$Pointer$)[pp][pp])) || !(pstate == 5bv32))) && (((((((((((((((((i == 1bv32 && unknown-#memory_int-unknown[pstate][~bvadd64(4bv32, pstate)] == 1bv32) && (\exists v_ArrVal_2832 : [bv32]bv32 :: #memory_$Pointer$ == \old(#memory_$Pointer$)[pstate := v_ArrVal_2832])) && pointer == pointer) && #memory_$Pointer$[pp][pp] == \old(#memory_$Pointer$)[pp][pp]) || !(0bv32 == pstate)) || !(pointer == 1bv32)) || !(pp == 0bv32)) || (((unknown-#memory_int-unknown[pstate][~bvadd64(4bv32, pstate)] == 1bv32 && (\exists v_ArrVal_2595 : [bv32]bv32 :: \old(#memory_$Pointer$)[pstate := v_ArrVal_2595] == #memory_$Pointer$)) && 2bv32 == i) && #memory_$Pointer$[pp][pp] == \old(#memory_$Pointer$)[pp][pp])) || !(1bv32 == \old(unknown-#memory_int-unknown)[pstate][pstate])) || (((((i == 0bv32 && #memory_$Pointer$ == \old(#memory_$Pointer$)) && \old(unknown-#memory_int-unknown) == unknown-#memory_int-unknown) && #memory_$Pointer$[pp][pp] == pointer) && #memory_$Pointer$[pp][pp] == pointer) && \old(#memory_$Pointer$) == #memory_$Pointer$)) || !(4bv32 == pp)) || !(\old(unknown-#memory_int-unknown)[pstate][~bvadd64(4bv32, pstate)] == 1bv32)) || pointer == \old(#memory_$Pointer$)[pp][~bvadd64(pp, 4bv32)]) || !(pointer == \old(#memory_$Pointer$)[pp][pp])) || !(0bv32 == \old(#memory_$Pointer$)[pp][pp])) || !(pointer == \old(#memory_$Pointer$)[pp][pp])) || !(pstate == 5bv32))) && (((((((((forall f_~i~1 : bv32 :: (!(2bv32 == \old(#memory_$Pointer$)[pp][~bvadd64(pp, ~bvmul32(f_~i~1, 4bv32))]) || !(~bvadd64(\old(#memory_$Pointer$)[pp][pp], 1bv32) == \old(#memory_$Pointer$)[pp][~bvadd64(pp, ~bvmul32(f_~i~1, 4bv32))])) || !(pointer == \old(#memory_$Pointer$)[pp][~bvadd64(pp, ~bvmul32(f_~i~1, 4bv32))])) || !(0bv32 == pstate)) || ((((!(0bv32 == #memory_$Pointer$[pp][~bvadd64(pp, 4bv32)]) || \old(#memory_$Pointer$)[pp][~bvadd64(pp, 4bv32)] == 0bv32) && #memory_$Pointer$[pp][pp] == \old(#memory_$Pointer$)[pp][pp]) && 2bv32 == i) && #memory_$Pointer$[pp][pp] == \old(#memory_$Pointer$)[pp][pp])) || !(pp == 0bv32)) || ((((i == 1bv32 && unknown-#memory_int-unknown[pstate][~bvadd64(4bv32, pstate)] == 1bv32) && (!(0bv32 == #memory_$Pointer$[pp][~bvadd64(pp, 4bv32)]) || \old(#memory_$Pointer$)[pp][~bvadd64(pp, 4bv32)] == 0bv32)) && #memory_$Pointer$[pp][pp] == \old(#memory_$Pointer$)[pp][pp]) && #memory_$Pointer$[pp][pp] == \old(#memory_$Pointer$)[pp][pp])) || !(4bv32 == pp)) || !(\old(unknown-#memory_int-unknown)[pstate][~bvadd64(4bv32, pstate)] == 1bv32)) || ((((((((pp == 0bv32 && 4bv32 == pp) && i == 0bv32) && pstate == 5bv32) && #memory_$Pointer$ == \old(#memory_$Pointer$)) && 0bv32 == pstate) && \old(unknown-#memory_int-unknown) == unknown-#memory_int-unknown) && (\exists f_~i~1 : bv32 :: (~bvadd64(#memory_$Pointer$[pp][pp], 1bv32) == #memory_$Pointer$[pp][~bvadd64(pp, ~bvmul32(f_~i~1, 4bv32))] && 2bv32 == #memory_$Pointer$[pp][~bvadd64(pp, ~bvmul32(f_~i~1, 4bv32))]) && #memory_$Pointer$[pp][~bvadd64(pp, ~bvmul32(f_~i~1, 4bv32))] == pointer)) && \old(#memory_$Pointer$) == #memory_$Pointer$)) || !(pstate == 5bv32)) [2021-11-25 19:16:18,682 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 19:16:18,683 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 19:16:18,684 INFO L158 Benchmark]: Toolchain (without parser) took 138149.18ms. Allocated memory was 65.0MB in the beginning and 146.8MB in the end (delta: 81.8MB). Free memory was 44.7MB in the beginning and 104.0MB in the end (delta: -59.3MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. [2021-11-25 19:16:18,684 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 65.0MB. Free memory is still 45.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:16:18,684 INFO L158 Benchmark]: CACSL2BoogieTranslator took 362.41ms. Allocated memory is still 65.0MB. Free memory was 44.5MB in the beginning and 48.4MB in the end (delta: -3.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 19:16:18,685 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.04ms. Allocated memory is still 65.0MB. Free memory was 48.4MB in the beginning and 46.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:16:18,685 INFO L158 Benchmark]: Boogie Preprocessor took 64.44ms. Allocated memory is still 65.0MB. Free memory was 46.5MB in the beginning and 45.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:16:18,686 INFO L158 Benchmark]: RCFGBuilder took 498.71ms. Allocated memory is still 65.0MB. Free memory was 45.2MB in the beginning and 32.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 19:16:18,686 INFO L158 Benchmark]: TraceAbstraction took 137050.71ms. Allocated memory was 65.0MB in the beginning and 146.8MB in the end (delta: 81.8MB). Free memory was 32.3MB in the beginning and 108.2MB in the end (delta: -75.9MB). Peak memory consumption was 87.7MB. Max. memory is 16.1GB. [2021-11-25 19:16:18,690 INFO L158 Benchmark]: Witness Printer took 100.32ms. Allocated memory is still 146.8MB. Free memory was 107.1MB in the beginning and 104.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:16:18,698 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 65.0MB. Free memory is still 45.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 362.41ms. Allocated memory is still 65.0MB. Free memory was 44.5MB in the beginning and 48.4MB in the end (delta: -3.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.04ms. Allocated memory is still 65.0MB. Free memory was 48.4MB in the beginning and 46.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 64.44ms. Allocated memory is still 65.0MB. Free memory was 46.5MB in the beginning and 45.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 498.71ms. Allocated memory is still 65.0MB. Free memory was 45.2MB in the beginning and 32.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 137050.71ms. Allocated memory was 65.0MB in the beginning and 146.8MB in the end (delta: 81.8MB). Free memory was 32.3MB in the beginning and 108.2MB in the end (delta: -75.9MB). Peak memory consumption was 87.7MB. Max. memory is 16.1GB. * Witness Printer took 100.32ms. Allocated memory is still 146.8MB. Free memory was 107.1MB in the beginning and 104.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_2595,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_2832,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_2832,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_2595,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[f_~i~1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[f_~i~1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[f_~i~1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[f_~i~1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[f_~i~1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[f_~i~1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_2595,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_2832,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_2832,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_2595,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[f_~i~1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[f_~i~1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[f_~i~1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[f_~i~1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[f_~i~1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[f_~i~1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset * 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: 8]: 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 4 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 136.8s, OverallIterations: 18, TraceHistogramMax: 4, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 44.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 8.6s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1648 SdHoareTripleChecker+Valid, 32.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1601 mSDsluCounter, 3740 SdHoareTripleChecker+Invalid, 29.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1198 IncrementalHoareTripleChecker+Unchecked, 3038 mSDsCounter, 829 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9941 IncrementalHoareTripleChecker+Invalid, 11968 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 829 mSolverCounterUnsat, 702 mSDtfsCounter, 9941 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3730 GetRequests, 3031 SyntacticMatches, 18 SemanticMatches, 681 ConstructedPredicates, 24 IntricatePredicates, 0 DeprecatedPredicates, 9812 ImplicationChecksByTransitivity, 39.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=249occurred in iteration=11, InterpolantAutomatonStates: 334, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 18 MinimizatonAttempts, 348 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 162 PreInvPairs, 203 NumberOfFragments, 1864 HoareAnnotationTreeSize, 162 FomulaSimplifications, 54 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 13 FomulaSimplificationsInter, 8796 FormulaSimplificationTreeSizeReductionInter, 8.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 5.7s SatisfiabilityAnalysisTime, 60.4s InterpolantComputationTime, 2201 NumberOfCodeBlocks, 2201 NumberOfCodeBlocksAsserted, 68 NumberOfCheckSat, 3325 ConstructedInterpolants, 94 QuantifiedInterpolants, 28087 SizeOfPredicates, 395 NumberOfNonLiveVariables, 9882 ConjunctsInSsa, 1060 ConjunctsInUnsatCore, 78 InterpolantComputations, 4 PerfectInterpolantSequences, 895/1602 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 1 specifications checked. All of them hold - InvariantResult [Line: 38]: Loop Invariant [2021-11-25 19:16:18,716 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,716 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_2595,QUANTIFIED] [2021-11-25 19:16:18,716 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,716 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,717 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,717 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,717 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,717 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_2832,QUANTIFIED] [2021-11-25 19:16:18,717 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,718 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,718 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,718 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,718 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,718 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,719 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,719 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,735 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,735 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,735 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,735 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,736 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,736 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,736 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,736 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,736 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,737 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,737 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,737 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,737 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,738 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,738 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,738 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,738 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,738 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,739 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,739 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,739 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,739 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,739 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_2832,QUANTIFIED] [2021-11-25 19:16:18,740 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,740 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,740 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,741 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_2595,QUANTIFIED] [2021-11-25 19:16:18,741 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,741 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,741 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,742 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,742 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,742 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,742 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,742 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,743 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,743 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,743 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,743 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,744 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,744 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,744 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[f_~i~1,QUANTIFIED] [2021-11-25 19:16:18,744 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,745 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,745 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[f_~i~1,QUANTIFIED] [2021-11-25 19:16:18,745 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,745 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[f_~i~1,QUANTIFIED] [2021-11-25 19:16:18,745 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,746 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,746 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,746 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,746 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,747 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,747 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,747 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,747 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,747 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,748 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,748 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,748 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,748 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,748 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,749 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,749 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[f_~i~1,QUANTIFIED] [2021-11-25 19:16:18,749 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,749 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[f_~i~1,QUANTIFIED] [2021-11-25 19:16:18,749 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,749 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[f_~i~1,QUANTIFIED] [2021-11-25 19:16:18,750 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,750 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,759 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,759 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_2595,QUANTIFIED] [2021-11-25 19:16:18,760 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,760 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,760 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,760 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,761 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,761 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_2832,QUANTIFIED] [2021-11-25 19:16:18,761 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,762 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,762 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,762 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,762 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,763 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,763 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,763 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,763 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,764 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,764 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,764 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,764 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,765 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,765 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,765 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,765 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,766 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,766 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,766 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,767 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,767 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,767 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,768 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,768 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,768 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,768 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,769 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,769 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,769 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,769 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_2832,QUANTIFIED] [2021-11-25 19:16:18,770 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,771 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,771 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,771 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_2595,QUANTIFIED] [2021-11-25 19:16:18,772 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,772 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,772 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,774 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,774 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,774 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,775 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,775 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,775 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,775 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,776 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,776 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,776 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,776 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,777 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[f_~i~1,QUANTIFIED] [2021-11-25 19:16:18,777 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,777 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,778 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[f_~i~1,QUANTIFIED] [2021-11-25 19:16:18,778 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,778 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[f_~i~1,QUANTIFIED] [2021-11-25 19:16:18,778 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,779 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,780 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,780 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,780 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,780 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,781 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,781 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,781 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,782 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,782 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,782 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,782 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,782 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,783 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,783 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,783 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[f_~i~1,QUANTIFIED] [2021-11-25 19:16:18,783 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,784 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[f_~i~1,QUANTIFIED] [2021-11-25 19:16:18,784 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,784 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[f_~i~1,QUANTIFIED] [2021-11-25 19:16:18,784 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,785 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base Derived loop invariant: ((((((((((((((!(0bv32 == pstate) || !(pp == 0bv32)) || (((\exists v_ArrVal_2595 : [bv32]bv32 :: \old(#memory_$Pointer$)[pstate := v_ArrVal_2595] == #memory_$Pointer$) && 2bv32 == i) && #memory_$Pointer$[pp][pp] == \old(#memory_$Pointer$)[pp][pp])) || !(1bv32 == \old(unknown-#memory_int-unknown)[pstate][pstate])) || (((i == 1bv32 && (\exists v_ArrVal_2832 : [bv32]bv32 :: #memory_$Pointer$ == \old(#memory_$Pointer$)[pstate := v_ArrVal_2832])) && pointer == 1bv32) && #memory_$Pointer$[pp][pp] == \old(#memory_$Pointer$)[pp][pp])) || (((((i == 0bv32 && #memory_$Pointer$ == \old(#memory_$Pointer$)) && \old(unknown-#memory_int-unknown) == unknown-#memory_int-unknown) && #memory_$Pointer$[pp][pp] == pointer) && #memory_$Pointer$[pp][pp] == pointer) && \old(#memory_$Pointer$) == #memory_$Pointer$)) || !(4bv32 == pp)) || !(pointer == \old(#memory_$Pointer$)[pp][pp])) || !(\old(#memory_$Pointer$)[pp][~bvadd64(pp, 4bv32)] == 0bv32)) || !(0bv32 == \old(#memory_$Pointer$)[pp][pp])) || !(\old(#memory_$Pointer$)[pp][pp] == 1bv32)) || !(pointer == \old(#memory_$Pointer$)[pp][pp])) || !(pstate == 5bv32)) && (((((((((!(0bv32 == pstate) || !(pp == 0bv32)) || ((((((((pp == 0bv32 && 4bv32 == pp) && i == 0bv32) && pstate == 5bv32) && #memory_$Pointer$ == \old(#memory_$Pointer$)) && 0bv32 == pstate) && \old(unknown-#memory_int-unknown) == unknown-#memory_int-unknown) && \old(#memory_$Pointer$) == #memory_$Pointer$) && 2bv32 == pointer)) || ((((i == 1bv32 && 0bv32 == #memory_$Pointer$[pp][~bvadd64(pp, 4bv32)]) && #memory_$Pointer$[pp][pp] == \old(#memory_$Pointer$)[pp][pp]) && #memory_$Pointer$[pp][pp] == \old(#memory_$Pointer$)[pp][pp]) && 2bv32 == pointer)) || !(4bv32 == pp)) || !(pointer == 2bv32)) || !(\old(#memory_$Pointer$)[pp][~bvadd64(pp, 4bv32)] == 0bv32)) || pointer == \old(#memory_$Pointer$)[pp][pp]) || ((#memory_$Pointer$[pp][pp] == \old(#memory_$Pointer$)[pp][pp] && 2bv32 == i) && #memory_$Pointer$[pp][pp] == \old(#memory_$Pointer$)[pp][pp])) || !(pstate == 5bv32))) && (((((((((((((((((i == 1bv32 && unknown-#memory_int-unknown[pstate][~bvadd64(4bv32, pstate)] == 1bv32) && (\exists v_ArrVal_2832 : [bv32]bv32 :: #memory_$Pointer$ == \old(#memory_$Pointer$)[pstate := v_ArrVal_2832])) && pointer == pointer) && #memory_$Pointer$[pp][pp] == \old(#memory_$Pointer$)[pp][pp]) || !(0bv32 == pstate)) || !(pointer == 1bv32)) || !(pp == 0bv32)) || (((unknown-#memory_int-unknown[pstate][~bvadd64(4bv32, pstate)] == 1bv32 && (\exists v_ArrVal_2595 : [bv32]bv32 :: \old(#memory_$Pointer$)[pstate := v_ArrVal_2595] == #memory_$Pointer$)) && 2bv32 == i) && #memory_$Pointer$[pp][pp] == \old(#memory_$Pointer$)[pp][pp])) || !(1bv32 == \old(unknown-#memory_int-unknown)[pstate][pstate])) || (((((i == 0bv32 && #memory_$Pointer$ == \old(#memory_$Pointer$)) && \old(unknown-#memory_int-unknown) == unknown-#memory_int-unknown) && #memory_$Pointer$[pp][pp] == pointer) && #memory_$Pointer$[pp][pp] == pointer) && \old(#memory_$Pointer$) == #memory_$Pointer$)) || !(4bv32 == pp)) || !(\old(unknown-#memory_int-unknown)[pstate][~bvadd64(4bv32, pstate)] == 1bv32)) || pointer == \old(#memory_$Pointer$)[pp][~bvadd64(pp, 4bv32)]) || !(pointer == \old(#memory_$Pointer$)[pp][pp])) || !(0bv32 == \old(#memory_$Pointer$)[pp][pp])) || !(pointer == \old(#memory_$Pointer$)[pp][pp])) || !(pstate == 5bv32))) && (((((((((forall f_~i~1 : bv32 :: (!(2bv32 == \old(#memory_$Pointer$)[pp][~bvadd64(pp, ~bvmul32(f_~i~1, 4bv32))]) || !(~bvadd64(\old(#memory_$Pointer$)[pp][pp], 1bv32) == \old(#memory_$Pointer$)[pp][~bvadd64(pp, ~bvmul32(f_~i~1, 4bv32))])) || !(pointer == \old(#memory_$Pointer$)[pp][~bvadd64(pp, ~bvmul32(f_~i~1, 4bv32))])) || !(0bv32 == pstate)) || ((((!(0bv32 == #memory_$Pointer$[pp][~bvadd64(pp, 4bv32)]) || \old(#memory_$Pointer$)[pp][~bvadd64(pp, 4bv32)] == 0bv32) && #memory_$Pointer$[pp][pp] == \old(#memory_$Pointer$)[pp][pp]) && 2bv32 == i) && #memory_$Pointer$[pp][pp] == \old(#memory_$Pointer$)[pp][pp])) || !(pp == 0bv32)) || ((((i == 1bv32 && unknown-#memory_int-unknown[pstate][~bvadd64(4bv32, pstate)] == 1bv32) && (!(0bv32 == #memory_$Pointer$[pp][~bvadd64(pp, 4bv32)]) || \old(#memory_$Pointer$)[pp][~bvadd64(pp, 4bv32)] == 0bv32)) && #memory_$Pointer$[pp][pp] == \old(#memory_$Pointer$)[pp][pp]) && #memory_$Pointer$[pp][pp] == \old(#memory_$Pointer$)[pp][pp])) || !(4bv32 == pp)) || !(\old(unknown-#memory_int-unknown)[pstate][~bvadd64(4bv32, pstate)] == 1bv32)) || ((((((((pp == 0bv32 && 4bv32 == pp) && i == 0bv32) && pstate == 5bv32) && #memory_$Pointer$ == \old(#memory_$Pointer$)) && 0bv32 == pstate) && \old(unknown-#memory_int-unknown) == unknown-#memory_int-unknown) && (\exists f_~i~1 : bv32 :: (~bvadd64(#memory_$Pointer$[pp][pp], 1bv32) == #memory_$Pointer$[pp][~bvadd64(pp, ~bvmul32(f_~i~1, 4bv32))] && 2bv32 == #memory_$Pointer$[pp][~bvadd64(pp, ~bvmul32(f_~i~1, 4bv32))]) && #memory_$Pointer$[pp][~bvadd64(pp, ~bvmul32(f_~i~1, 4bv32))] == pointer)) && \old(#memory_$Pointer$) == #memory_$Pointer$)) || !(pstate == 5bv32)) - InvariantResult [Line: 27]: Loop Invariant [2021-11-25 19:16:18,788 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,788 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,789 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,789 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,789 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,789 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,790 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,790 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,790 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,790 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,790 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,791 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,791 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,791 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,791 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,792 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,792 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,792 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,792 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,792 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,793 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,793 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,798 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,799 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,799 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,799 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,800 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,800 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,800 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,800 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,801 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,801 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,801 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,801 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,801 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,802 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,802 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,802 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,802 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,803 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,803 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,803 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,803 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,803 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset Derived loop invariant: ((((((((!(0bv32 == pstate) || !(pp == 0bv32)) || (((((pointer == pointer && i == 0bv32) && #memory_$Pointer$ == \old(#memory_$Pointer$)) && pointer == pointer) && \old(unknown-#memory_int-unknown) == unknown-#memory_int-unknown) && \old(#memory_$Pointer$) == #memory_$Pointer$)) || !(\old(#memory_$Pointer$)[pp][pp] == 0bv32)) || !(\old(#memory_$Pointer$)[pp][~bvadd64(pp, 4bv32)] == 0bv32)) || !(4bv32 == pp)) || !(\old(#memory_$Pointer$)[pp][~bvadd64(pp, 4bv32)] == 0bv32)) || !(0bv32 == \old(#memory_$Pointer$)[pp][pp])) || !(pstate == 5bv32)) && (((((((((!(0bv32 == pstate) || !(pp == 0bv32)) || (((((pointer == pointer && i == 0bv32) && #memory_$Pointer$ == \old(#memory_$Pointer$)) && pointer == pointer) && \old(unknown-#memory_int-unknown) == unknown-#memory_int-unknown) && \old(#memory_$Pointer$) == #memory_$Pointer$)) || !(1bv32 == \old(unknown-#memory_int-unknown)[pstate][pstate])) || ((((pointer == pointer && 2bv32 == i) && #memory_$Pointer$ == \old(#memory_$Pointer$)) && \old(unknown-#memory_int-unknown) == unknown-#memory_int-unknown) && \old(#memory_$Pointer$) == #memory_$Pointer$)) || !(4bv32 == pp)) || !(\old(#memory_$Pointer$)[pp][~bvadd64(pp, 4bv32)] == 0bv32)) || ((((pointer == pointer && i == 1bv32) && #memory_$Pointer$ == \old(#memory_$Pointer$)) && \old(unknown-#memory_int-unknown) == unknown-#memory_int-unknown) && \old(#memory_$Pointer$) == #memory_$Pointer$)) || !(\old(#memory_$Pointer$)[pp][pp] == 1bv32)) || !(pstate == 5bv32)) - InvariantResult [Line: 53]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant [2021-11-25 19:16:18,805 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,805 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,805 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,805 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,806 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,806 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:16:18,807 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:16:18,807 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset Derived loop invariant: (((((((#memory_$Pointer$[pp][~bvadd64(pp, 4bv32)] == 0bv32 && pp == 0bv32) && #memory_$Pointer$[pp][pp] == 0bv32) && 0bv32 == #memory_$Pointer$[pp][~bvadd64(pp, 4bv32)]) && counter == 1bv32) && 4bv32 == pp) && #memory_$Pointer$[pp][pp] == 0bv32) && pstate == 5bv32) && 0bv32 == pstate RESULT: Ultimate proved your program to be correct! [2021-11-25 19:16:18,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0703a5a-c874-4635-a5d9-c24102178b2e/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE