./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta --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 4f0dc25e497896e48962fc4f59a3ea4856b5eb0408b9845e68b04a0b0a132067 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:36:33,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:36:33,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:36:33,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:36:33,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:36:33,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:36:33,374 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:36:33,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:36:33,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:36:33,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:36:33,392 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:36:33,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:36:33,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:36:33,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:36:33,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:36:33,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:36:33,405 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:36:33,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:36:33,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:36:33,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:36:33,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:36:33,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:36:33,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:36:33,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:36:33,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:36:33,439 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:36:33,439 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:36:33,441 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:36:33,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:36:33,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:36:33,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:36:33,446 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:36:33,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:36:33,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:36:33,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:36:33,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:36:33,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:36:33,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:36:33,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:36:33,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:36:33,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:36:33,456 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:36:33,503 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:36:33,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:36:33,504 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:36:33,504 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:36:33,505 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:36:33,505 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:36:33,506 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:36:33,506 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:36:33,506 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:36:33,506 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:36:33,507 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:36:33,508 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:36:33,508 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:36:33,508 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:36:33,508 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:36:33,509 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:36:33,509 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:36:33,509 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:36:33,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:36:33,510 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:36:33,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:36:33,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:36:33,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:36:33,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:36:33,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:36:33,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:36:33,513 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:36:33,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:36:33,513 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:36:33,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:36:33,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:36:33,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:36:33,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:36:33,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:36:33,515 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:36:33,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:36:33,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:36:33,537 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:36:33,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:36:33,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:36:33,537 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:36:33,538 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f0dc25e497896e48962fc4f59a3ea4856b5eb0408b9845e68b04a0b0a132067 [2022-10-17 17:36:33,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:36:33,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:36:33,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:36:33,837 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:36:33,838 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:36:33,839 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound2.c [2022-10-17 17:36:33,907 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/data/64c257ad2/9a444d8bcff046abba34e0ee57697486/FLAGf31a1da13 [2022-10-17 17:36:34,402 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:36:34,403 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound2.c [2022-10-17 17:36:34,411 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/data/64c257ad2/9a444d8bcff046abba34e0ee57697486/FLAGf31a1da13 [2022-10-17 17:36:34,743 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/data/64c257ad2/9a444d8bcff046abba34e0ee57697486 [2022-10-17 17:36:34,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:36:34,748 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:36:34,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:36:34,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:36:34,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:36:34,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:36:34" (1/1) ... [2022-10-17 17:36:34,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61546ff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:34, skipping insertion in model container [2022-10-17 17:36:34,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:36:34" (1/1) ... [2022-10-17 17:36:34,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:36:34,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:36:34,990 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_dd19bd4b-4c78-4555-a15f-417b751ecc25/sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound2.c[573,586] [2022-10-17 17:36:35,008 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:36:35,019 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:36:35,034 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_dd19bd4b-4c78-4555-a15f-417b751ecc25/sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound2.c[573,586] [2022-10-17 17:36:35,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:36:35,053 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:36:35,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:35 WrapperNode [2022-10-17 17:36:35,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:36:35,055 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:36:35,055 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:36:35,055 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:36:35,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:35" (1/1) ... [2022-10-17 17:36:35,071 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:35" (1/1) ... [2022-10-17 17:36:35,090 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2022-10-17 17:36:35,091 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:36:35,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:36:35,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:36:35,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:36:35,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:35" (1/1) ... [2022-10-17 17:36:35,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:35" (1/1) ... [2022-10-17 17:36:35,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:35" (1/1) ... [2022-10-17 17:36:35,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:35" (1/1) ... [2022-10-17 17:36:35,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:35" (1/1) ... [2022-10-17 17:36:35,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:35" (1/1) ... [2022-10-17 17:36:35,112 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:35" (1/1) ... [2022-10-17 17:36:35,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:35" (1/1) ... [2022-10-17 17:36:35,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:36:35,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:36:35,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:36:35,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:36:35,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:35" (1/1) ... [2022-10-17 17:36:35,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:36:35,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:36:35,161 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:36:35,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:36:35,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:36:35,210 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 17:36:35,210 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 17:36:35,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:36:35,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:36:35,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:36:35,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-17 17:36:35,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-17 17:36:35,279 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:36:35,281 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:36:35,491 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:36:35,542 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:36:35,543 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 17:36:35,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:36:35 BoogieIcfgContainer [2022-10-17 17:36:35,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:36:35,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:36:35,561 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:36:35,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:36:35,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:36:34" (1/3) ... [2022-10-17 17:36:35,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7d4a25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:36:35, skipping insertion in model container [2022-10-17 17:36:35,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:35" (2/3) ... [2022-10-17 17:36:35,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7d4a25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:36:35, skipping insertion in model container [2022-10-17 17:36:35,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:36:35" (3/3) ... [2022-10-17 17:36:35,568 INFO L112 eAbstractionObserver]: Analyzing ICFG mannadiv_valuebound2.c [2022-10-17 17:36:35,586 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:36:35,587 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:36:35,653 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:36:35,659 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@25598684, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:36:35,660 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:36:35,664 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 17:36:35,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 17:36:35,672 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:36:35,673 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:36:35,673 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:36:35,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:36:35,691 INFO L85 PathProgramCache]: Analyzing trace with hash 375362447, now seen corresponding path program 1 times [2022-10-17 17:36:35,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:36:35,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551880597] [2022-10-17 17:36:35,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:35,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:36:35,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:35,855 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:36:35,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551880597] [2022-10-17 17:36:35,856 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-10-17 17:36:35,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268193871] [2022-10-17 17:36:35,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:35,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:36:35,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:36:35,859 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:36:35,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 17:36:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:35,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 17:36:35,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:36:35,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 17:36:35,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:36:35,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268193871] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:36:35,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:36:35,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:36:35,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115473157] [2022-10-17 17:36:35,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:36:35,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 17:36:35,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:36:36,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 17:36:36,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:36:36,049 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 17:36:36,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:36:36,103 INFO L93 Difference]: Finished difference Result 30 states and 39 transitions. [2022-10-17 17:36:36,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 17:36:36,106 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2022-10-17 17:36:36,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:36:36,116 INFO L225 Difference]: With dead ends: 30 [2022-10-17 17:36:36,116 INFO L226 Difference]: Without dead ends: 16 [2022-10-17 17:36:36,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:36:36,125 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:36:36,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:36:36,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-10-17 17:36:36,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-10-17 17:36:36,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 17:36:36,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-10-17 17:36:36,163 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2022-10-17 17:36:36,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:36:36,164 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-10-17 17:36:36,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 17:36:36,165 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-10-17 17:36:36,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 17:36:36,166 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:36:36,166 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:36:36,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 17:36:36,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:36:36,379 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:36:36,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:36:36,380 INFO L85 PathProgramCache]: Analyzing trace with hash 328203294, now seen corresponding path program 1 times [2022-10-17 17:36:36,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:36:36,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031752577] [2022-10-17 17:36:36,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:36,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:36:36,435 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 17:36:36,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1744511710] [2022-10-17 17:36:36,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:36,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:36:36,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:36:36,447 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:36:36,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 17:36:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:36,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-17 17:36:36,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:36:36,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 17:36:36,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:36:36,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:36:36,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031752577] [2022-10-17 17:36:36,789 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 17:36:36,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744511710] [2022-10-17 17:36:36,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744511710] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:36:36,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:36:36,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 17:36:36,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658222055] [2022-10-17 17:36:36,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:36:36,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 17:36:36,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:36:36,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 17:36:36,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-17 17:36:36,792 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 17:36:36,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:36:36,917 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-10-17 17:36:36,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 17:36:36,917 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2022-10-17 17:36:36,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:36:36,918 INFO L225 Difference]: With dead ends: 26 [2022-10-17 17:36:36,918 INFO L226 Difference]: Without dead ends: 24 [2022-10-17 17:36:36,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-10-17 17:36:36,921 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 17 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:36:36,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 35 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:36:36,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-10-17 17:36:36,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2022-10-17 17:36:36,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 15 states have internal predecessors, (15), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 17:36:36,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2022-10-17 17:36:36,931 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 13 [2022-10-17 17:36:36,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:36:36,932 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2022-10-17 17:36:36,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 17:36:36,932 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2022-10-17 17:36:36,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-17 17:36:36,933 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:36:36,934 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:36:36,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 17:36:37,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:36:37,174 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:36:37,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:36:37,174 INFO L85 PathProgramCache]: Analyzing trace with hash 927627110, now seen corresponding path program 1 times [2022-10-17 17:36:37,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:36:37,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284166645] [2022-10-17 17:36:37,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:37,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:36:37,190 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 17:36:37,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [246164035] [2022-10-17 17:36:37,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:37,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:36:37,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:36:37,192 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:36:37,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 17:36:37,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:37,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 17:36:37,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:36:37,387 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 17:36:37,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:36:37,618 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 17:36:37,619 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:36:37,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284166645] [2022-10-17 17:36:37,620 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 17:36:37,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246164035] [2022-10-17 17:36:37,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246164035] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:36:37,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [698927420] [2022-10-17 17:36:37,653 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-10-17 17:36:37,653 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:36:37,658 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:36:37,664 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:36:37,665 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:36:38,200 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 38 for LOIs [2022-10-17 17:36:38,216 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 66 for LOIs [2022-10-17 17:36:38,272 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:36:39,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [698927420] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:36:39,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-10-17 17:36:39,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8, 8] total 19 [2022-10-17 17:36:39,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838354077] [2022-10-17 17:36:39,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:36:39,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 17:36:39,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:36:39,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 17:36:39,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-10-17 17:36:39,397 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 11 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 17:36:39,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:36:39,507 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2022-10-17 17:36:39,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 17:36:39,508 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 19 [2022-10-17 17:36:39,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:36:39,509 INFO L225 Difference]: With dead ends: 30 [2022-10-17 17:36:39,509 INFO L226 Difference]: Without dead ends: 23 [2022-10-17 17:36:39,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-10-17 17:36:39,511 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 16 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:36:39,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 30 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 52 Invalid, 0 Unknown, 15 Unchecked, 0.1s Time] [2022-10-17 17:36:39,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-10-17 17:36:39,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-10-17 17:36:39,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 17:36:39,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-10-17 17:36:39,525 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 19 [2022-10-17 17:36:39,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:36:39,526 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-10-17 17:36:39,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 17:36:39,526 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-10-17 17:36:39,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-17 17:36:39,527 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:36:39,527 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:36:39,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 17:36:39,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:36:39,743 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:36:39,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:36:39,743 INFO L85 PathProgramCache]: Analyzing trace with hash 138347192, now seen corresponding path program 1 times [2022-10-17 17:36:39,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:36:39,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594946951] [2022-10-17 17:36:39,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:39,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:36:39,756 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 17:36:39,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1517681546] [2022-10-17 17:36:39,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:39,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:36:39,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:36:39,758 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:36:39,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 17:36:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:39,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-17 17:36:39,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:36:39,982 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 17:36:39,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:36:40,141 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 17:36:40,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:36:40,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594946951] [2022-10-17 17:36:40,142 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 17:36:40,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517681546] [2022-10-17 17:36:40,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517681546] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:36:40,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [518409390] [2022-10-17 17:36:40,145 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-10-17 17:36:40,145 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:36:40,146 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:36:40,146 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:36:40,146 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:36:40,889 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 33 for LOIs [2022-10-17 17:36:40,946 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 66 for LOIs [2022-10-17 17:36:40,978 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:36:41,908 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '566#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-10-17 17:36:41,909 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:36:41,909 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 17:36:41,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2022-10-17 17:36:41,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351281728] [2022-10-17 17:36:41,909 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 17:36:41,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 17:36:41,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:36:41,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 17:36:41,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2022-10-17 17:36:41,911 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-17 17:36:42,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:36:42,022 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2022-10-17 17:36:42,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 17:36:42,023 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 20 [2022-10-17 17:36:42,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:36:42,024 INFO L225 Difference]: With dead ends: 33 [2022-10-17 17:36:42,024 INFO L226 Difference]: Without dead ends: 29 [2022-10-17 17:36:42,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 33 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2022-10-17 17:36:42,026 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 21 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:36:42,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 36 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:36:42,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-10-17 17:36:42,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2022-10-17 17:36:42,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 17:36:42,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2022-10-17 17:36:42,040 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 20 [2022-10-17 17:36:42,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:36:42,040 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2022-10-17 17:36:42,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-17 17:36:42,041 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2022-10-17 17:36:42,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-10-17 17:36:42,042 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:36:42,042 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:36:42,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 17:36:42,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:36:42,258 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:36:42,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:36:42,259 INFO L85 PathProgramCache]: Analyzing trace with hash -459496832, now seen corresponding path program 1 times [2022-10-17 17:36:42,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:36:42,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320564836] [2022-10-17 17:36:42,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:42,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:36:42,271 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 17:36:42,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1651223438] [2022-10-17 17:36:42,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:42,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:36:42,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:36:42,272 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:36:42,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 17:36:42,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:42,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 17:36:42,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:36:42,390 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 17:36:42,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:36:42,495 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 17:36:42,496 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:36:42,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320564836] [2022-10-17 17:36:42,496 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 17:36:42,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651223438] [2022-10-17 17:36:42,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651223438] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:36:42,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1558515701] [2022-10-17 17:36:42,499 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-10-17 17:36:42,499 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:36:42,500 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:36:42,500 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:36:42,500 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:36:43,116 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 61 for LOIs [2022-10-17 17:36:43,262 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 66 for LOIs [2022-10-17 17:36:43,291 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:36:44,387 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '824#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-10-17 17:36:44,387 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:36:44,387 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 17:36:44,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-10-17 17:36:44,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899685510] [2022-10-17 17:36:44,387 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 17:36:44,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 17:36:44,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:36:44,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 17:36:44,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-10-17 17:36:44,389 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-17 17:36:44,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:36:44,475 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2022-10-17 17:36:44,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 17:36:44,476 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 26 [2022-10-17 17:36:44,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:36:44,476 INFO L225 Difference]: With dead ends: 25 [2022-10-17 17:36:44,477 INFO L226 Difference]: Without dead ends: 0 [2022-10-17 17:36:44,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 52 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2022-10-17 17:36:44,478 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 11 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:36:44,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:36:44,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-10-17 17:36:44,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-10-17 17:36:44,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:44,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-10-17 17:36:44,480 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2022-10-17 17:36:44,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:36:44,480 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-17 17:36:44,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-17 17:36:44,481 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-10-17 17:36:44,481 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-10-17 17:36:44,485 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-10-17 17:36:44,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-17 17:36:44,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:36:44,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-10-17 17:36:45,282 INFO L895 garLoopResultBuilder]: At program point L35-2(lines 35 48) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x2~0#1| |ULTIMATE.start_main_~y1~0#1|)) (.cse1 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= |ULTIMATE.start_main_~x2~0#1| 2147483647) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= |ULTIMATE.start_main_~x1~0#1| (+ .cse0 |ULTIMATE.start_main_~y2~0#1|)) (not (= (ite (<= 0 |ULTIMATE.start_main_~x1~0#1|) 1 0) 0)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~x2~0#1| 2147483648)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (not (= (ite (not (= |ULTIMATE.start_main_~x2~0#1| 0)) 1 0) 0)) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647) (= (select .cse1 0) 48) (= |ULTIMATE.start_main_~x1~0#1| (+ .cse0 |ULTIMATE.start_main_~y2~0#1| |ULTIMATE.start_main_~y3~0#1|)) (= (select .cse1 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-10-17 17:36:45,283 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-10-17 17:36:45,283 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2022-10-17 17:36:45,283 INFO L895 garLoopResultBuilder]: At program point L40-2(lines 35 48) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= |ULTIMATE.start_main_~x2~0#1| 2147483647) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (not (= (ite (<= 0 |ULTIMATE.start_main_~x1~0#1|) 1 0) 0)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~x2~0#1| 2147483648)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (not (= (ite (not (= |ULTIMATE.start_main_~x2~0#1| 0)) 1 0) 0)) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647) (= (select .cse0 0) 48) (= |ULTIMATE.start_main_~x1~0#1| (+ (* |ULTIMATE.start_main_~x2~0#1| |ULTIMATE.start_main_~y1~0#1|) |ULTIMATE.start_main_~y2~0#1| |ULTIMATE.start_main_~y3~0#1|)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-10-17 17:36:45,283 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= |ULTIMATE.start_main_~x2~0#1| 2147483647) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (not (= (ite (<= 0 |ULTIMATE.start_main_~x1~0#1|) 1 0) 0)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~x2~0#1| 2147483648)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (not (= (ite (not (= |ULTIMATE.start_main_~x2~0#1| 0)) 1 0) 0)) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647) (= (select .cse0 0) 48) (= |ULTIMATE.start_main_~x1~0#1| (+ (* |ULTIMATE.start_main_~x2~0#1| |ULTIMATE.start_main_~y1~0#1|) |ULTIMATE.start_main_~y2~0#1| |ULTIMATE.start_main_~y3~0#1|)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-10-17 17:36:45,284 INFO L899 garLoopResultBuilder]: For program point L36-1(lines 35 48) no Hoare annotation was computed. [2022-10-17 17:36:45,284 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-10-17 17:36:45,284 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= |ULTIMATE.start_main_~x2~0#1| 2147483647) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~x2~0#1| 2147483648)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~x1~0#1| 2147483648)) (= |#NULL.base| 0))) [2022-10-17 17:36:45,284 INFO L895 garLoopResultBuilder]: At program point L28-1(line 28) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= |ULTIMATE.start_main_~x2~0#1| 2147483647) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (not (= (ite (<= 0 |ULTIMATE.start_main_~x1~0#1|) 1 0) 0)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~x2~0#1| 2147483648)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-10-17 17:36:45,284 INFO L902 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: true [2022-10-17 17:36:45,285 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 12 14) the Hoare annotation is: true [2022-10-17 17:36:45,285 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 12 14) no Hoare annotation was computed. [2022-10-17 17:36:45,285 INFO L899 garLoopResultBuilder]: For program point L17(lines 17 18) no Hoare annotation was computed. [2022-10-17 17:36:45,285 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 19) no Hoare annotation was computed. [2022-10-17 17:36:45,285 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 15 21) the Hoare annotation is: true [2022-10-17 17:36:45,285 INFO L899 garLoopResultBuilder]: For program point L16-2(lines 15 21) no Hoare annotation was computed. [2022-10-17 17:36:45,285 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 15 21) no Hoare annotation was computed. [2022-10-17 17:36:45,286 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2022-10-17 17:36:45,289 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-10-17 17:36:45,291 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 17:36:45,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 05:36:45 BoogieIcfgContainer [2022-10-17 17:36:45,309 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 17:36:45,309 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 17:36:45,310 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 17:36:45,310 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 17:36:45,310 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:36:35" (3/4) ... [2022-10-17 17:36:45,313 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-10-17 17:36:45,318 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-10-17 17:36:45,319 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-10-17 17:36:45,322 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-10-17 17:36:45,323 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-10-17 17:36:45,323 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-10-17 17:36:45,323 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-10-17 17:36:45,356 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/witness.graphml [2022-10-17 17:36:45,356 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 17:36:45,357 INFO L158 Benchmark]: Toolchain (without parser) took 10609.16ms. Allocated memory was 92.3MB in the beginning and 184.5MB in the end (delta: 92.3MB). Free memory was 50.9MB in the beginning and 133.9MB in the end (delta: -83.0MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2022-10-17 17:36:45,357 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 92.3MB. Free memory is still 66.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:36:45,357 INFO L158 Benchmark]: CACSL2BoogieTranslator took 304.98ms. Allocated memory is still 92.3MB. Free memory was 50.7MB in the beginning and 67.0MB in the end (delta: -16.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-10-17 17:36:45,358 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.76ms. Allocated memory is still 92.3MB. Free memory was 67.0MB in the beginning and 65.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:36:45,358 INFO L158 Benchmark]: Boogie Preprocessor took 24.00ms. Allocated memory is still 92.3MB. Free memory was 65.6MB in the beginning and 64.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:36:45,358 INFO L158 Benchmark]: RCFGBuilder took 442.06ms. Allocated memory is still 92.3MB. Free memory was 64.3MB in the beginning and 52.7MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-10-17 17:36:45,359 INFO L158 Benchmark]: TraceAbstraction took 9748.21ms. Allocated memory was 92.3MB in the beginning and 184.5MB in the end (delta: 92.3MB). Free memory was 52.1MB in the beginning and 136.0MB in the end (delta: -83.9MB). Peak memory consumption was 74.8MB. Max. memory is 16.1GB. [2022-10-17 17:36:45,359 INFO L158 Benchmark]: Witness Printer took 46.67ms. Allocated memory is still 184.5MB. Free memory was 136.0MB in the beginning and 133.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:36:45,361 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 92.3MB. Free memory is still 66.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 304.98ms. Allocated memory is still 92.3MB. Free memory was 50.7MB in the beginning and 67.0MB in the end (delta: -16.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.76ms. Allocated memory is still 92.3MB. Free memory was 67.0MB in the beginning and 65.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.00ms. Allocated memory is still 92.3MB. Free memory was 65.6MB in the beginning and 64.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 442.06ms. Allocated memory is still 92.3MB. Free memory was 64.3MB in the beginning and 52.7MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 9748.21ms. Allocated memory was 92.3MB in the beginning and 184.5MB in the end (delta: 92.3MB). Free memory was 52.1MB in the beginning and 136.0MB in the end (delta: -83.9MB). Peak memory consumption was 74.8MB. Max. memory is 16.1GB. * Witness Printer took 46.67ms. Allocated memory is still 184.5MB. Free memory was 136.0MB in the beginning and 133.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: 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 3 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.7s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 70 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 65 mSDsluCounter, 151 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 15 IncrementalHoareTripleChecker+Unchecked, 114 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 219 IncrementalHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 56 mSDtfsCounter, 219 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 218 GetRequests, 136 SyntacticMatches, 15 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=4, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 21 NumberOfFragments, 455 HoareAnnotationTreeSize, 14 FomulaSimplifications, 3 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 1286 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 148 ConstructedInterpolants, 0 QuantifiedInterpolants, 482 SizeOfPredicates, 20 NumberOfNonLiveVariables, 351 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 42/50 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: 0.6s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 3, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 16, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 13, TOOLS_POST_TIME: 0.1s, TOOLS_POST_CALL_APPLICATIONS: 10, TOOLS_POST_CALL_TIME: 0.3s, TOOLS_POST_RETURN_APPLICATIONS: 6, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 29, TOOLS_QUANTIFIERELIM_TIME: 0.4s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 44, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 10, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 16, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 6, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 121, DAG_COMPRESSION_RETAINED_NODES: 48, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((((((((((((unknown-#length-unknown[3] == 12 && x2 <= 2147483647) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && !((if 0 <= x1 then 1 else 0) == 0)) && \valid[1] == 1) && \valid[0] == 0) && 0 <= x2 + 2147483648) && \valid[2] == 1) && #NULL == 0) && !((if !(x2 == 0) then 1 else 0) == 0)) && x1 <= 2147483647) && unknown-#memory_int-unknown[1][0] == 48) && x1 == x2 * y1 + y2 + y3) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-10-17 17:36:45,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd19bd4b-4c78-4555-a15f-417b751ecc25/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE