./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/soft_float_3.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_3.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aa6f3ffe66f40e883b6b9462d3d92566e122af5c88e351ce665cbb8a404d0554 --- 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-2329fc7 [2022-12-14 11:13:39,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:13:40,001 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:13:40,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:13:40,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:13:40,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:13:40,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:13:40,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:13:40,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:13:40,029 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:13:40,030 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:13:40,031 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:13:40,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:13:40,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:13:40,033 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:13:40,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:13:40,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:13:40,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:13:40,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:13:40,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:13:40,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:13:40,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:13:40,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:13:40,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:13:40,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:13:40,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:13:40,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:13:40,049 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:13:40,050 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:13:40,051 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:13:40,051 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:13:40,052 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:13:40,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:13:40,053 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:13:40,054 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:13:40,055 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:13:40,055 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:13:40,055 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:13:40,056 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:13:40,056 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:13:40,057 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:13:40,058 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 11:13:40,079 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:13:40,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:13:40,079 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:13:40,080 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:13:40,080 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:13:40,080 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:13:40,081 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:13:40,081 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:13:40,081 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:13:40,081 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 11:13:40,081 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:13:40,082 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:13:40,082 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 11:13:40,082 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 11:13:40,082 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:13:40,082 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 11:13:40,083 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 11:13:40,083 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 11:13:40,084 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:13:40,084 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 11:13:40,084 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 11:13:40,084 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 11:13:40,084 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 11:13:40,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:13:40,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:13:40,085 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:13:40,085 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:13:40,085 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 11:13:40,085 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 11:13:40,086 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:13:40,086 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:13:40,086 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:13:40,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:13:40,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:13:40,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:13:40,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:13:40,087 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 11:13:40,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:13:40,087 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:13:40,088 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 11:13:40,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 11:13:40,088 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:13:40,088 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:13:40,088 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_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa6f3ffe66f40e883b6b9462d3d92566e122af5c88e351ce665cbb8a404d0554 [2022-12-14 11:13:40,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:13:40,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:13:40,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:13:40,297 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:13:40,297 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:13:40,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/bitvector/soft_float_3.c.cil.c [2022-12-14 11:13:42,908 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:13:43,029 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:13:43,029 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/sv-benchmarks/c/bitvector/soft_float_3.c.cil.c [2022-12-14 11:13:43,034 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/data/6b17ed30a/3cdb3c269f414316916d70f79b21282c/FLAGf48f5222a [2022-12-14 11:13:43,044 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/data/6b17ed30a/3cdb3c269f414316916d70f79b21282c [2022-12-14 11:13:43,046 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:13:43,047 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:13:43,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:13:43,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:13:43,051 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:13:43,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:13:43" (1/1) ... [2022-12-14 11:13:43,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e19d475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:13:43, skipping insertion in model container [2022-12-14 11:13:43,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:13:43" (1/1) ... [2022-12-14 11:13:43,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:13:43,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:13:43,219 WARN L237 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_c7f64396-eb8f-4be6-84b0-77a23a8a7995/sv-benchmarks/c/bitvector/soft_float_3.c.cil.c[727,740] [2022-12-14 11:13:43,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:13:43,276 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:13:43,287 WARN L237 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_c7f64396-eb8f-4be6-84b0-77a23a8a7995/sv-benchmarks/c/bitvector/soft_float_3.c.cil.c[727,740] [2022-12-14 11:13:43,312 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:13:43,326 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:13:43,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:13:43 WrapperNode [2022-12-14 11:13:43,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:13:43,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:13:43,328 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:13:43,328 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:13:43,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:13:43" (1/1) ... [2022-12-14 11:13:43,344 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:13:43" (1/1) ... [2022-12-14 11:13:43,362 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 181 [2022-12-14 11:13:43,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:13:43,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:13:43,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:13:43,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:13:43,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:13:43" (1/1) ... [2022-12-14 11:13:43,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:13:43" (1/1) ... [2022-12-14 11:13:43,371 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:13:43" (1/1) ... [2022-12-14 11:13:43,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:13:43" (1/1) ... [2022-12-14 11:13:43,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:13:43" (1/1) ... [2022-12-14 11:13:43,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:13:43" (1/1) ... [2022-12-14 11:13:43,381 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:13:43" (1/1) ... [2022-12-14 11:13:43,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:13:43" (1/1) ... [2022-12-14 11:13:43,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:13:43,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:13:43,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:13:43,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:13:43,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:13:43" (1/1) ... [2022-12-14 11:13:43,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:13:43,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:13:43,410 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:13:43,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:13:43,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:13:43,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 11:13:43,438 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-12-14 11:13:43,438 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-12-14 11:13:43,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:13:43,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:13:43,438 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 11:13:43,439 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 11:13:43,501 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:13:43,503 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:13:43,883 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:13:44,028 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:13:44,029 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 11:13:44,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:13:44 BoogieIcfgContainer [2022-12-14 11:13:44,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:13:44,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:13:44,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:13:44,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:13:44,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:13:43" (1/3) ... [2022-12-14 11:13:44,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3abd92a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:13:44, skipping insertion in model container [2022-12-14 11:13:44,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:13:43" (2/3) ... [2022-12-14 11:13:44,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3abd92a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:13:44, skipping insertion in model container [2022-12-14 11:13:44,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:13:44" (3/3) ... [2022-12-14 11:13:44,038 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_3.c.cil.c [2022-12-14 11:13:44,052 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:13:44,052 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2022-12-14 11:13:44,090 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:13:44,095 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;@644b1c5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:13:44,095 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-12-14 11:13:44,098 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 51 states have (on average 1.7647058823529411) internal successors, (90), 76 states have internal predecessors, (90), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 11:13:44,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 11:13:44,106 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:13:44,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:13:44,107 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-12-14 11:13:44,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:13:44,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1097531878, now seen corresponding path program 1 times [2022-12-14 11:13:44,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:13:44,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2885819] [2022-12-14 11:13:44,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:13:44,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:13:44,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:13:44,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:13:44,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:13:44,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2885819] [2022-12-14 11:13:44,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2885819] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:13:44,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:13:44,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:13:44,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364642797] [2022-12-14 11:13:44,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:13:44,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 11:13:44,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:13:44,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 11:13:44,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 11:13:44,257 INFO L87 Difference]: Start difference. First operand has 83 states, 51 states have (on average 1.7647058823529411) internal successors, (90), 76 states have internal predecessors, (90), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:13:44,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:13:44,312 INFO L93 Difference]: Finished difference Result 162 states and 201 transitions. [2022-12-14 11:13:44,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 11:13:44,314 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 11:13:44,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:13:44,320 INFO L225 Difference]: With dead ends: 162 [2022-12-14 11:13:44,320 INFO L226 Difference]: Without dead ends: 74 [2022-12-14 11:13:44,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 11:13:44,325 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:13:44,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:13:44,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-12-14 11:13:44,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-12-14 11:13:44,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 47 states have (on average 1.5957446808510638) internal successors, (75), 68 states have internal predecessors, (75), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:13:44,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2022-12-14 11:13:44,355 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 8 [2022-12-14 11:13:44,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:13:44,356 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2022-12-14 11:13:44,356 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:13:44,356 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2022-12-14 11:13:44,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 11:13:44,358 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:13:44,358 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:13:44,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 11:13:44,358 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-12-14 11:13:44,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:13:44,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1096320963, now seen corresponding path program 1 times [2022-12-14 11:13:44,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:13:44,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80333942] [2022-12-14 11:13:44,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:13:44,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:13:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:13:44,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:13:44,433 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:13:44,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80333942] [2022-12-14 11:13:44,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80333942] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:13:44,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:13:44,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:13:44,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150734153] [2022-12-14 11:13:44,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:13:44,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:13:44,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:13:44,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:13:44,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:13:44,437 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:13:44,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:13:44,545 INFO L93 Difference]: Finished difference Result 194 states and 230 transitions. [2022-12-14 11:13:44,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 11:13:44,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 11:13:44,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:13:44,547 INFO L225 Difference]: With dead ends: 194 [2022-12-14 11:13:44,547 INFO L226 Difference]: Without dead ends: 122 [2022-12-14 11:13:44,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:13:44,549 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 67 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:13:44,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 177 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:13:44,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-12-14 11:13:44,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 110. [2022-12-14 11:13:44,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 82 states have (on average 1.5365853658536586) internal successors, (126), 103 states have internal predecessors, (126), 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) [2022-12-14 11:13:44,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 134 transitions. [2022-12-14 11:13:44,558 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 134 transitions. Word has length 8 [2022-12-14 11:13:44,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:13:44,558 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 134 transitions. [2022-12-14 11:13:44,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:13:44,559 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 134 transitions. [2022-12-14 11:13:44,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 11:13:44,559 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:13:44,559 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:13:44,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 11:13:44,559 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-12-14 11:13:44,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:13:44,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1318317195, now seen corresponding path program 1 times [2022-12-14 11:13:44,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:13:44,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072889013] [2022-12-14 11:13:44,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:13:44,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:13:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:13:44,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:13:44,629 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:13:44,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072889013] [2022-12-14 11:13:44,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072889013] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:13:44,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:13:44,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 11:13:44,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339979289] [2022-12-14 11:13:44,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:13:44,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:13:44,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:13:44,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:13:44,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:13:44,631 INFO L87 Difference]: Start difference. First operand 110 states and 134 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:13:44,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:13:44,749 INFO L93 Difference]: Finished difference Result 244 states and 296 transitions. [2022-12-14 11:13:44,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 11:13:44,749 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-14 11:13:44,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:13:44,751 INFO L225 Difference]: With dead ends: 244 [2022-12-14 11:13:44,751 INFO L226 Difference]: Without dead ends: 136 [2022-12-14 11:13:44,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-14 11:13:44,753 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 115 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:13:44,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 185 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:13:44,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-12-14 11:13:44,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 119. [2022-12-14 11:13:44,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 91 states have (on average 1.4945054945054945) internal successors, (136), 112 states have internal predecessors, (136), 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) [2022-12-14 11:13:44,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 144 transitions. [2022-12-14 11:13:44,762 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 144 transitions. Word has length 12 [2022-12-14 11:13:44,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:13:44,762 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 144 transitions. [2022-12-14 11:13:44,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:13:44,762 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 144 transitions. [2022-12-14 11:13:44,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 11:13:44,763 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:13:44,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:13:44,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 11:13:44,763 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting base2fltErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-12-14 11:13:44,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:13:44,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1407151289, now seen corresponding path program 1 times [2022-12-14 11:13:44,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:13:44,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936138159] [2022-12-14 11:13:44,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:13:44,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:13:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:13:44,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:13:44,841 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:13:44,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936138159] [2022-12-14 11:13:44,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936138159] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:13:44,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:13:44,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 11:13:44,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189537005] [2022-12-14 11:13:44,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:13:44,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:13:44,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:13:44,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:13:44,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:13:44,843 INFO L87 Difference]: Start difference. First operand 119 states and 144 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:13:44,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:13:44,899 INFO L93 Difference]: Finished difference Result 240 states and 290 transitions. [2022-12-14 11:13:44,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 11:13:44,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 11:13:44,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:13:44,901 INFO L225 Difference]: With dead ends: 240 [2022-12-14 11:13:44,901 INFO L226 Difference]: Without dead ends: 123 [2022-12-14 11:13:44,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:13:44,903 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 5 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:13:44,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 201 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:13:44,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-12-14 11:13:44,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2022-12-14 11:13:44,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 94 states have (on average 1.4787234042553192) internal successors, (139), 115 states have internal predecessors, (139), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:13:44,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 147 transitions. [2022-12-14 11:13:44,914 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 147 transitions. Word has length 13 [2022-12-14 11:13:44,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:13:44,915 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 147 transitions. [2022-12-14 11:13:44,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:13:44,915 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 147 transitions. [2022-12-14 11:13:44,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 11:13:44,916 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:13:44,916 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:13:44,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 11:13:44,917 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-12-14 11:13:44,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:13:44,917 INFO L85 PathProgramCache]: Analyzing trace with hash -636235639, now seen corresponding path program 1 times [2022-12-14 11:13:44,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:13:44,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160598276] [2022-12-14 11:13:44,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:13:44,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:13:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:13:44,952 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 11:13:44,952 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:13:44,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160598276] [2022-12-14 11:13:44,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160598276] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:13:44,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:13:44,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:13:44,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022980060] [2022-12-14 11:13:44,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:13:44,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:13:44,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:13:44,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:13:44,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:13:44,954 INFO L87 Difference]: Start difference. First operand 123 states and 147 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 11:13:44,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:13:44,994 INFO L93 Difference]: Finished difference Result 127 states and 152 transitions. [2022-12-14 11:13:44,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:13:44,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (3), 1 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 20 [2022-12-14 11:13:44,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:13:44,995 INFO L225 Difference]: With dead ends: 127 [2022-12-14 11:13:44,995 INFO L226 Difference]: Without dead ends: 126 [2022-12-14 11:13:44,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:13:44,996 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 3 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:13:44,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 128 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:13:44,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-12-14 11:13:45,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 121. [2022-12-14 11:13:45,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 93 states have (on average 1.4623655913978495) internal successors, (136), 113 states have internal predecessors, (136), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:13:45,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 144 transitions. [2022-12-14 11:13:45,007 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 144 transitions. Word has length 20 [2022-12-14 11:13:45,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:13:45,008 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 144 transitions. [2022-12-14 11:13:45,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 11:13:45,008 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 144 transitions. [2022-12-14 11:13:45,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 11:13:45,009 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:13:45,009 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:13:45,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 11:13:45,009 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting base2fltErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-12-14 11:13:45,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:13:45,010 INFO L85 PathProgramCache]: Analyzing trace with hash 2101218295, now seen corresponding path program 1 times [2022-12-14 11:13:45,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:13:45,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226475364] [2022-12-14 11:13:45,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:13:45,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:13:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:13:45,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:13:45,090 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:13:45,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226475364] [2022-12-14 11:13:45,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226475364] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:13:45,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:13:45,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 11:13:45,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753455877] [2022-12-14 11:13:45,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:13:45,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:13:45,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:13:45,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:13:45,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:13:45,091 INFO L87 Difference]: Start difference. First operand 121 states and 144 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 11:13:45,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:13:45,143 INFO L93 Difference]: Finished difference Result 204 states and 230 transitions. [2022-12-14 11:13:45,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 11:13:45,144 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-12-14 11:13:45,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:13:45,145 INFO L225 Difference]: With dead ends: 204 [2022-12-14 11:13:45,145 INFO L226 Difference]: Without dead ends: 111 [2022-12-14 11:13:45,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:13:45,146 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 31 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:13:45,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 197 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:13:45,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-12-14 11:13:45,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 105. [2022-12-14 11:13:45,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 77 states have (on average 1.4805194805194806) internal successors, (114), 97 states have internal predecessors, (114), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:13:45,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 122 transitions. [2022-12-14 11:13:45,154 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 122 transitions. Word has length 19 [2022-12-14 11:13:45,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:13:45,155 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 122 transitions. [2022-12-14 11:13:45,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 11:13:45,155 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 122 transitions. [2022-12-14 11:13:45,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 11:13:45,156 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:13:45,156 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:13:45,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 11:13:45,156 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-12-14 11:13:45,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:13:45,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1387772797, now seen corresponding path program 1 times [2022-12-14 11:13:45,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:13:45,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724387537] [2022-12-14 11:13:45,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:13:45,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:13:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:13:45,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:13:45,210 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:13:45,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724387537] [2022-12-14 11:13:45,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724387537] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:13:45,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:13:45,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 11:13:45,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211120062] [2022-12-14 11:13:45,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:13:45,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:13:45,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:13:45,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:13:45,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:13:45,212 INFO L87 Difference]: Start difference. First operand 105 states and 122 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 11:13:45,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:13:45,294 INFO L93 Difference]: Finished difference Result 113 states and 125 transitions. [2022-12-14 11:13:45,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 11:13:45,294 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-12-14 11:13:45,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:13:45,295 INFO L225 Difference]: With dead ends: 113 [2022-12-14 11:13:45,295 INFO L226 Difference]: Without dead ends: 110 [2022-12-14 11:13:45,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 11:13:45,296 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 42 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:13:45,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 234 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:13:45,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-12-14 11:13:45,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 105. [2022-12-14 11:13:45,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 77 states have (on average 1.4285714285714286) internal successors, (110), 97 states have internal predecessors, (110), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:13:45,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 118 transitions. [2022-12-14 11:13:45,301 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 118 transitions. Word has length 19 [2022-12-14 11:13:45,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:13:45,301 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 118 transitions. [2022-12-14 11:13:45,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 11:13:45,301 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 118 transitions. [2022-12-14 11:13:45,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 11:13:45,302 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:13:45,302 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:13:45,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 11:13:45,303 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-12-14 11:13:45,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:13:45,303 INFO L85 PathProgramCache]: Analyzing trace with hash 243029041, now seen corresponding path program 1 times [2022-12-14 11:13:45,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:13:45,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751199416] [2022-12-14 11:13:45,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:13:45,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:13:45,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:13:45,333 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 11:13:45,334 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:13:45,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751199416] [2022-12-14 11:13:45,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751199416] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:13:45,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:13:45,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:13:45,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601556044] [2022-12-14 11:13:45,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:13:45,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:13:45,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:13:45,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:13:45,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:13:45,336 INFO L87 Difference]: Start difference. First operand 105 states and 118 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 11:13:45,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:13:45,381 INFO L93 Difference]: Finished difference Result 117 states and 134 transitions. [2022-12-14 11:13:45,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 11:13:45,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-12-14 11:13:45,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:13:45,382 INFO L225 Difference]: With dead ends: 117 [2022-12-14 11:13:45,383 INFO L226 Difference]: Without dead ends: 114 [2022-12-14 11:13:45,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:13:45,383 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 13 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:13:45,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 121 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:13:45,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-12-14 11:13:45,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 103. [2022-12-14 11:13:45,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 76 states have (on average 1.394736842105263) internal successors, (106), 95 states have internal predecessors, (106), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:13:45,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 114 transitions. [2022-12-14 11:13:45,388 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 114 transitions. Word has length 23 [2022-12-14 11:13:45,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:13:45,389 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 114 transitions. [2022-12-14 11:13:45,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 11:13:45,389 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 114 transitions. [2022-12-14 11:13:45,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 11:13:45,389 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:13:45,389 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:13:45,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 11:13:45,390 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-12-14 11:13:45,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:13:45,390 INFO L85 PathProgramCache]: Analyzing trace with hash 836809299, now seen corresponding path program 1 times [2022-12-14 11:13:45,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:13:45,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832163212] [2022-12-14 11:13:45,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:13:45,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:13:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:13:45,441 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 11:13:45,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:13:45,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832163212] [2022-12-14 11:13:45,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832163212] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:13:45,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:13:45,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 11:13:45,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861097713] [2022-12-14 11:13:45,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:13:45,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:13:45,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:13:45,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:13:45,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:13:45,443 INFO L87 Difference]: Start difference. First operand 103 states and 114 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 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) [2022-12-14 11:13:45,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:13:45,529 INFO L93 Difference]: Finished difference Result 143 states and 161 transitions. [2022-12-14 11:13:45,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 11:13:45,529 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 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 33 [2022-12-14 11:13:45,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:13:45,530 INFO L225 Difference]: With dead ends: 143 [2022-12-14 11:13:45,530 INFO L226 Difference]: Without dead ends: 140 [2022-12-14 11:13:45,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 11:13:45,531 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 96 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:13:45,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 186 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:13:45,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-12-14 11:13:45,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 124. [2022-12-14 11:13:45,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 96 states have (on average 1.4166666666666667) internal successors, (136), 115 states have internal predecessors, (136), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:13:45,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 144 transitions. [2022-12-14 11:13:45,536 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 144 transitions. Word has length 33 [2022-12-14 11:13:45,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:13:45,537 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 144 transitions. [2022-12-14 11:13:45,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 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) [2022-12-14 11:13:45,537 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 144 transitions. [2022-12-14 11:13:45,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 11:13:45,537 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:13:45,537 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:13:45,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 11:13:45,538 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-12-14 11:13:45,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:13:45,538 INFO L85 PathProgramCache]: Analyzing trace with hash 808181943, now seen corresponding path program 1 times [2022-12-14 11:13:45,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:13:45,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51889411] [2022-12-14 11:13:45,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:13:45,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:13:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:13:45,587 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 11:13:45,588 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:13:45,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51889411] [2022-12-14 11:13:45,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51889411] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:13:45,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:13:45,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 11:13:45,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377571097] [2022-12-14 11:13:45,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:13:45,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:13:45,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:13:45,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:13:45,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:13:45,589 INFO L87 Difference]: Start difference. First operand 124 states and 144 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 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) [2022-12-14 11:13:45,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:13:45,673 INFO L93 Difference]: Finished difference Result 142 states and 161 transitions. [2022-12-14 11:13:45,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 11:13:45,674 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 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 33 [2022-12-14 11:13:45,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:13:45,674 INFO L225 Difference]: With dead ends: 142 [2022-12-14 11:13:45,675 INFO L226 Difference]: Without dead ends: 139 [2022-12-14 11:13:45,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 11:13:45,675 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 100 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:13:45,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 181 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:13:45,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-12-14 11:13:45,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 128. [2022-12-14 11:13:45,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 101 states have (on average 1.3762376237623761) internal successors, (139), 119 states have internal predecessors, (139), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:13:45,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 147 transitions. [2022-12-14 11:13:45,681 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 147 transitions. Word has length 33 [2022-12-14 11:13:45,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:13:45,681 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 147 transitions. [2022-12-14 11:13:45,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 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) [2022-12-14 11:13:45,681 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 147 transitions. [2022-12-14 11:13:45,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-14 11:13:45,682 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:13:45,682 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:13:45,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 11:13:45,682 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting base2fltErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-12-14 11:13:45,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:13:45,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1365640218, now seen corresponding path program 1 times [2022-12-14 11:13:45,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:13:45,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625147304] [2022-12-14 11:13:45,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:13:45,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:13:45,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:13:45,773 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:13:45,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:13:45,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625147304] [2022-12-14 11:13:45,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625147304] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:13:45,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:13:45,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 11:13:45,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031445986] [2022-12-14 11:13:45,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:13:45,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:13:45,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:13:45,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:13:45,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:13:45,774 INFO L87 Difference]: Start difference. First operand 128 states and 147 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2022-12-14 11:13:45,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:13:45,846 INFO L93 Difference]: Finished difference Result 296 states and 341 transitions. [2022-12-14 11:13:45,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 11:13:45,846 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 37 [2022-12-14 11:13:45,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:13:45,847 INFO L225 Difference]: With dead ends: 296 [2022-12-14 11:13:45,847 INFO L226 Difference]: Without dead ends: 191 [2022-12-14 11:13:45,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-12-14 11:13:45,849 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 68 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:13:45,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 127 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:13:45,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-12-14 11:13:45,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 128. [2022-12-14 11:13:45,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 101 states have (on average 1.3663366336633664) internal successors, (138), 119 states have internal predecessors, (138), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:13:45,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 146 transitions. [2022-12-14 11:13:45,858 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 146 transitions. Word has length 37 [2022-12-14 11:13:45,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:13:45,859 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 146 transitions. [2022-12-14 11:13:45,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2022-12-14 11:13:45,859 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 146 transitions. [2022-12-14 11:13:45,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-14 11:13:45,860 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:13:45,860 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:13:45,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 11:13:45,860 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting base2fltErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-12-14 11:13:45,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:13:45,861 INFO L85 PathProgramCache]: Analyzing trace with hash -516292581, now seen corresponding path program 1 times [2022-12-14 11:13:45,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:13:45,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57940118] [2022-12-14 11:13:45,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:13:45,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:13:45,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:13:45,937 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:13:45,937 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:13:45,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57940118] [2022-12-14 11:13:45,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57940118] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:13:45,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22319228] [2022-12-14 11:13:45,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:13:45,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:13:45,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:13:45,939 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:13:45,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 11:13:45,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:13:45,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 11:13:46,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:13:46,070 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:13:46,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:13:46,176 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:13:46,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22319228] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:13:46,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1295946508] [2022-12-14 11:13:46,191 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2022-12-14 11:13:46,192 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:13:46,194 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:13:46,199 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:13:46,199 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:13:46,441 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 22 for LOIs [2022-12-14 11:13:46,544 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:13:47,347 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4166#(and (<= |base2flt_#in~e| 127) (= base2flt_~e |base2flt_#in~e|) (or (<= 0 base2flt_~m) (< |base2flt_#in~m| 0)) (<= 16777216 (mod |base2flt_#in~m| 4294967296)) (< (mod |base2flt_#in~m| 4294967296) 33554432) (< 0 (+ (* 16777216 base2flt_~e) 1)) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:13:47,348 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:13:47,348 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:13:47,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2022-12-14 11:13:47,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314017149] [2022-12-14 11:13:47,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:13:47,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 11:13:47,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:13:47,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 11:13:47,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=738, Unknown=0, NotChecked=0, Total=930 [2022-12-14 11:13:47,350 INFO L87 Difference]: Start difference. First operand 128 states and 146 transitions. Second operand has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 11:13:47,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:13:47,683 INFO L93 Difference]: Finished difference Result 490 states and 571 transitions. [2022-12-14 11:13:47,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-14 11:13:47,684 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 38 [2022-12-14 11:13:47,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:13:47,686 INFO L225 Difference]: With dead ends: 490 [2022-12-14 11:13:47,686 INFO L226 Difference]: Without dead ends: 389 [2022-12-14 11:13:47,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 90 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=362, Invalid=1278, Unknown=0, NotChecked=0, Total=1640 [2022-12-14 11:13:47,687 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 266 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:13:47,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 168 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:13:47,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-12-14 11:13:47,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 148. [2022-12-14 11:13:47,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 121 states have (on average 1.3388429752066116) internal successors, (162), 139 states have internal predecessors, (162), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:13:47,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 170 transitions. [2022-12-14 11:13:47,704 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 170 transitions. Word has length 38 [2022-12-14 11:13:47,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:13:47,704 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 170 transitions. [2022-12-14 11:13:47,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 11:13:47,705 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 170 transitions. [2022-12-14 11:13:47,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-14 11:13:47,706 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:13:47,706 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:13:47,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 11:13:47,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-14 11:13:47,907 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting base2fltErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-12-14 11:13:47,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:13:47,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1490465526, now seen corresponding path program 1 times [2022-12-14 11:13:47,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:13:47,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015652604] [2022-12-14 11:13:47,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:13:47,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:13:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:13:48,077 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:13:48,077 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:13:48,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015652604] [2022-12-14 11:13:48,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015652604] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:13:48,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508054544] [2022-12-14 11:13:48,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:13:48,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:13:48,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:13:48,078 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:13:48,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 11:13:48,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:13:48,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 11:13:48,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:13:48,177 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:13:48,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:13:48,275 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:13:48,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508054544] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:13:48,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1611143224] [2022-12-14 11:13:48,278 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2022-12-14 11:13:48,278 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:13:48,278 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:13:48,278 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:13:48,279 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:13:48,503 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 22 for LOIs [2022-12-14 11:13:48,609 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:13:49,030 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5243#(and (<= |base2flt_#in~e| 127) (<= 0 (+ 128 |base2flt_#in~e|)) (< 0 (+ (* 16777216 base2flt_~e) 1)) (= |#NULL.offset| 0) (<= base2flt_~e 127) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:13:49,031 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:13:49,031 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:13:49,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-12-14 11:13:49,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149655930] [2022-12-14 11:13:49,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:13:49,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 11:13:49,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:13:49,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 11:13:49,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2022-12-14 11:13:49,032 INFO L87 Difference]: Start difference. First operand 148 states and 170 transitions. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 11:13:49,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:13:49,385 INFO L93 Difference]: Finished difference Result 395 states and 458 transitions. [2022-12-14 11:13:49,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 11:13:49,385 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-12-14 11:13:49,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:13:49,387 INFO L225 Difference]: With dead ends: 395 [2022-12-14 11:13:49,387 INFO L226 Difference]: Without dead ends: 282 [2022-12-14 11:13:49,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 105 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=209, Invalid=661, Unknown=0, NotChecked=0, Total=870 [2022-12-14 11:13:49,388 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 108 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:13:49,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 343 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:13:49,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-12-14 11:13:49,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 148. [2022-12-14 11:13:49,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 121 states have (on average 1.3057851239669422) internal successors, (158), 139 states have internal predecessors, (158), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:13:49,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 166 transitions. [2022-12-14 11:13:49,403 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 166 transitions. Word has length 42 [2022-12-14 11:13:49,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:13:49,403 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 166 transitions. [2022-12-14 11:13:49,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 11:13:49,403 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 166 transitions. [2022-12-14 11:13:49,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-14 11:13:49,404 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:13:49,404 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:13:49,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 11:13:49,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-14 11:13:49,605 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting base2fltErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-12-14 11:13:49,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:13:49,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1453298405, now seen corresponding path program 2 times [2022-12-14 11:13:49,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:13:49,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995387335] [2022-12-14 11:13:49,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:13:49,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:13:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:13:49,756 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 8 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:13:49,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:13:49,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995387335] [2022-12-14 11:13:49,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995387335] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:13:49,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085662468] [2022-12-14 11:13:49,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 11:13:49,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:13:49,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:13:49,758 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:13:49,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 11:13:49,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-12-14 11:13:49,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:13:49,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 11:13:49,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:13:49,909 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 8 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:13:49,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:13:50,099 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 8 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:13:50,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085662468] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:13:50,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1695047807] [2022-12-14 11:13:50,102 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2022-12-14 11:13:50,102 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:13:50,102 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:13:50,102 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:13:50,103 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:13:50,215 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 22 for LOIs [2022-12-14 11:13:50,294 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:13:51,137 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6294#(and (<= |base2flt_#in~e| 127) (= base2flt_~e |base2flt_#in~e|) (or (<= 0 base2flt_~m) (< |base2flt_#in~m| 0)) (<= 16777216 (mod |base2flt_#in~m| 4294967296)) (< (mod |base2flt_#in~m| 4294967296) 33554432) (< 0 (+ (* 16777216 base2flt_~e) 1)) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:13:51,138 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:13:51,138 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:13:51,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-12-14 11:13:51,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135035066] [2022-12-14 11:13:51,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:13:51,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-14 11:13:51,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:13:51,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-14 11:13:51,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=428, Invalid=1378, Unknown=0, NotChecked=0, Total=1806 [2022-12-14 11:13:51,140 INFO L87 Difference]: Start difference. First operand 148 states and 166 transitions. Second operand has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 11:13:51,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:13:51,746 INFO L93 Difference]: Finished difference Result 798 states and 939 transitions. [2022-12-14 11:13:51,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-14 11:13:51,746 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 58 [2022-12-14 11:13:51,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:13:51,748 INFO L225 Difference]: With dead ends: 798 [2022-12-14 11:13:51,748 INFO L226 Difference]: Without dead ends: 697 [2022-12-14 11:13:51,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 142 SyntacticMatches, 10 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1965 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=980, Invalid=2680, Unknown=0, NotChecked=0, Total=3660 [2022-12-14 11:13:51,749 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 527 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:13:51,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 231 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:13:51,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2022-12-14 11:13:51,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 188. [2022-12-14 11:13:51,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 161 states have (on average 1.279503105590062) internal successors, (206), 179 states have internal predecessors, (206), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:13:51,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 214 transitions. [2022-12-14 11:13:51,763 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 214 transitions. Word has length 58 [2022-12-14 11:13:51,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:13:51,764 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 214 transitions. [2022-12-14 11:13:51,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 11:13:51,764 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 214 transitions. [2022-12-14 11:13:51,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-14 11:13:51,764 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:13:51,764 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:13:51,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 11:13:51,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-14 11:13:51,966 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting base2fltErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-12-14 11:13:51,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:13:51,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1644257290, now seen corresponding path program 2 times [2022-12-14 11:13:51,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:13:51,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011757841] [2022-12-14 11:13:51,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:13:51,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:13:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:13:52,163 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 14 proven. 75 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:13:52,163 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:13:52,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011757841] [2022-12-14 11:13:52,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011757841] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:13:52,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611532048] [2022-12-14 11:13:52,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 11:13:52,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:13:52,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:13:52,165 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:13:52,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 11:13:52,259 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-12-14 11:13:52,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:13:52,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-14 11:13:52,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:13:52,371 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 14 proven. 75 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:13:52,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:13:52,575 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 14 proven. 75 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:13:52,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611532048] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:13:52,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [837449920] [2022-12-14 11:13:52,577 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2022-12-14 11:13:52,577 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:13:52,577 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:13:52,577 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:13:52,577 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:13:52,724 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 22 for LOIs [2022-12-14 11:13:52,819 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:13:53,400 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7951#(and (<= |base2flt_#in~e| 127) (<= 0 (+ 128 |base2flt_#in~e|)) (< 0 (+ (* 16777216 base2flt_~e) 1)) (= |#NULL.offset| 0) (<= base2flt_~e 127) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:13:53,400 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:13:53,400 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:13:53,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2022-12-14 11:13:53,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031778227] [2022-12-14 11:13:53,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:13:53,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 11:13:53,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:13:53,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 11:13:53,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=1043, Unknown=0, NotChecked=0, Total=1332 [2022-12-14 11:13:53,402 INFO L87 Difference]: Start difference. First operand 188 states and 214 transitions. Second operand has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 11:14:16,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:14:16,891 INFO L93 Difference]: Finished difference Result 563 states and 662 transitions. [2022-12-14 11:14:16,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-14 11:14:16,892 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 62 [2022-12-14 11:14:16,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:14:16,893 INFO L225 Difference]: With dead ends: 563 [2022-12-14 11:14:16,893 INFO L226 Difference]: Without dead ends: 450 [2022-12-14 11:14:16,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 159 SyntacticMatches, 8 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 927 ImplicationChecksByTransitivity, 23.6s TimeCoverageRelationStatistics Valid=614, Invalid=1829, Unknown=7, NotChecked=0, Total=2450 [2022-12-14 11:14:16,894 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 321 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 11:14:16,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 963 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 11:14:16,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-12-14 11:14:16,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 188. [2022-12-14 11:14:16,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 161 states have (on average 1.2298136645962734) internal successors, (198), 179 states have internal predecessors, (198), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:14:16,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 206 transitions. [2022-12-14 11:14:16,909 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 206 transitions. Word has length 62 [2022-12-14 11:14:16,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:14:16,909 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 206 transitions. [2022-12-14 11:14:16,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 11:14:16,909 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 206 transitions. [2022-12-14 11:14:16,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-14 11:14:16,910 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:14:16,910 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:14:16,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 11:14:17,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-14 11:14:17,112 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting base2fltErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-12-14 11:14:17,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:14:17,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1602471707, now seen corresponding path program 3 times [2022-12-14 11:14:17,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:14:17,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422757107] [2022-12-14 11:14:17,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:14:17,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:14:17,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:14:17,416 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 8 proven. 483 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:14:17,416 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:14:17,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422757107] [2022-12-14 11:14:17,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422757107] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:14:17,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391741713] [2022-12-14 11:14:17,416 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 11:14:17,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:14:17,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:14:17,417 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:14:17,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 11:14:17,485 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 11:14:17,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:14:17,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-14 11:14:17,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:14:17,675 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 8 proven. 483 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:14:17,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:14:18,119 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 8 proven. 483 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:14:18,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391741713] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:14:18,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1258212002] [2022-12-14 11:14:18,121 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2022-12-14 11:14:18,121 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:14:18,121 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:14:18,121 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:14:18,121 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:14:18,259 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 22 for LOIs [2022-12-14 11:14:18,343 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:14:19,465 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9550#(and (<= |base2flt_#in~e| 127) (= base2flt_~e |base2flt_#in~e|) (or (<= 0 base2flt_~m) (< |base2flt_#in~m| 0)) (<= 16777216 (mod |base2flt_#in~m| 4294967296)) (< (mod |base2flt_#in~m| 4294967296) 33554432) (< 0 (+ (* 16777216 base2flt_~e) 1)) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:14:19,465 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:14:19,465 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:14:19,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 50 [2022-12-14 11:14:19,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675945838] [2022-12-14 11:14:19,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:14:19,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-12-14 11:14:19,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:14:19,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-12-14 11:14:19,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1188, Invalid=3234, Unknown=0, NotChecked=0, Total=4422 [2022-12-14 11:14:19,469 INFO L87 Difference]: Start difference. First operand 188 states and 206 transitions. Second operand has 50 states, 50 states have (on average 4.9) internal successors, (245), 50 states have internal predecessors, (245), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 11:14:21,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:14:21,235 INFO L93 Difference]: Finished difference Result 1414 states and 1675 transitions. [2022-12-14 11:14:21,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-12-14 11:14:21,235 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 4.9) internal successors, (245), 50 states have internal predecessors, (245), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 98 [2022-12-14 11:14:21,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:14:21,243 INFO L225 Difference]: With dead ends: 1414 [2022-12-14 11:14:21,243 INFO L226 Difference]: Without dead ends: 1313 [2022-12-14 11:14:21,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 246 SyntacticMatches, 18 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5425 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3128, Invalid=6972, Unknown=0, NotChecked=0, Total=10100 [2022-12-14 11:14:21,245 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 1177 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 11:14:21,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1177 Valid, 358 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 11:14:21,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2022-12-14 11:14:21,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 268. [2022-12-14 11:14:21,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 241 states have (on average 1.2199170124481329) internal successors, (294), 259 states have internal predecessors, (294), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:14:21,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 302 transitions. [2022-12-14 11:14:21,275 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 302 transitions. Word has length 98 [2022-12-14 11:14:21,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:14:21,275 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 302 transitions. [2022-12-14 11:14:21,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 4.9) internal successors, (245), 50 states have internal predecessors, (245), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 11:14:21,276 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 302 transitions. [2022-12-14 11:14:21,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-14 11:14:21,276 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:14:21,276 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:14:21,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 11:14:21,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-14 11:14:21,478 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting base2fltErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-12-14 11:14:21,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:14:21,479 INFO L85 PathProgramCache]: Analyzing trace with hash 2128935414, now seen corresponding path program 3 times [2022-12-14 11:14:21,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:14:21,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777510978] [2022-12-14 11:14:21,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:14:21,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:14:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:14:21,876 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 14 proven. 455 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:14:21,876 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:14:21,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777510978] [2022-12-14 11:14:21,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777510978] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:14:21,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387356882] [2022-12-14 11:14:21,877 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 11:14:21,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:14:21,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:14:21,878 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:14:21,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 11:14:21,969 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 11:14:21,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:14:21,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 33 conjunts are in the unsatisfiable core [2022-12-14 11:14:21,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:14:22,273 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 14 proven. 455 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:14:22,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:14:22,827 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 14 proven. 455 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:14:22,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387356882] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:14:22,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1251851730] [2022-12-14 11:14:22,828 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2022-12-14 11:14:22,829 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:14:22,829 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:14:22,829 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:14:22,829 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:14:22,955 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 22 for LOIs [2022-12-14 11:14:23,037 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:14:24,317 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12367#(and (<= |base2flt_#in~e| 127) (<= 0 (+ 128 |base2flt_#in~e|)) (< 0 (+ (* 16777216 base2flt_~e) 1)) (= |#NULL.offset| 0) (<= base2flt_~e 127) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:14:24,317 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:14:24,317 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:14:24,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 49 [2022-12-14 11:14:24,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083224681] [2022-12-14 11:14:24,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:14:24,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-12-14 11:14:24,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:14:24,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-12-14 11:14:24,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=747, Invalid=2913, Unknown=0, NotChecked=0, Total=3660 [2022-12-14 11:14:24,320 INFO L87 Difference]: Start difference. First operand 268 states and 302 transitions. Second operand has 49 states, 49 states have (on average 5.1020408163265305) internal successors, (250), 49 states have internal predecessors, (250), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 11:14:37,914 WARN L233 SmtUtils]: Spent 12.30s on a formula simplification. DAG size of input: 58 DAG size of output: 16 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:15:14,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:15:14,337 INFO L93 Difference]: Finished difference Result 809 states and 956 transitions. [2022-12-14 11:15:14,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-14 11:15:14,337 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 5.1020408163265305) internal successors, (250), 49 states have internal predecessors, (250), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 102 [2022-12-14 11:15:14,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:15:14,339 INFO L225 Difference]: With dead ends: 809 [2022-12-14 11:15:14,339 INFO L226 Difference]: Without dead ends: 696 [2022-12-14 11:15:14,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 257 SyntacticMatches, 16 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2492 ImplicationChecksByTransitivity, 50.6s TimeCoverageRelationStatistics Valid=1727, Invalid=5239, Unknown=6, NotChecked=0, Total=6972 [2022-12-14 11:15:14,340 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 616 mSDsluCounter, 2121 mSDsCounter, 0 mSdLazyCounter, 2243 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 2250 SdHoareTripleChecker+Invalid, 2263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:15:14,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 2250 Invalid, 2263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2243 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 11:15:14,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2022-12-14 11:15:14,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 268. [2022-12-14 11:15:14,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 241 states have (on average 1.1784232365145229) internal successors, (284), 259 states have internal predecessors, (284), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:15:14,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 292 transitions. [2022-12-14 11:15:14,364 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 292 transitions. Word has length 102 [2022-12-14 11:15:14,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:15:14,365 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 292 transitions. [2022-12-14 11:15:14,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 5.1020408163265305) internal successors, (250), 49 states have internal predecessors, (250), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 11:15:14,365 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 292 transitions. [2022-12-14 11:15:14,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-12-14 11:15:14,366 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:15:14,366 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:15:14,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 11:15:14,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-14 11:15:14,566 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting base2fltErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-12-14 11:15:14,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:15:14,567 INFO L85 PathProgramCache]: Analyzing trace with hash 428022390, now seen corresponding path program 4 times [2022-12-14 11:15:14,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:15:14,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985129954] [2022-12-14 11:15:14,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:15:14,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:15:14,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:15:14,598 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 11:15:14,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:15:14,660 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 11:15:14,660 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 11:15:14,661 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location base2fltErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 24 remaining) [2022-12-14 11:15:14,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 24 remaining) [2022-12-14 11:15:14,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 24 remaining) [2022-12-14 11:15:14,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 24 remaining) [2022-12-14 11:15:14,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 24 remaining) [2022-12-14 11:15:14,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 24 remaining) [2022-12-14 11:15:14,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 24 remaining) [2022-12-14 11:15:14,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 24 remaining) [2022-12-14 11:15:14,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 24 remaining) [2022-12-14 11:15:14,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 24 remaining) [2022-12-14 11:15:14,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 24 remaining) [2022-12-14 11:15:14,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 24 remaining) [2022-12-14 11:15:14,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 24 remaining) [2022-12-14 11:15:14,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 24 remaining) [2022-12-14 11:15:14,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 24 remaining) [2022-12-14 11:15:14,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 24 remaining) [2022-12-14 11:15:14,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 24 remaining) [2022-12-14 11:15:14,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 24 remaining) [2022-12-14 11:15:14,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 24 remaining) [2022-12-14 11:15:14,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 24 remaining) [2022-12-14 11:15:14,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 24 remaining) [2022-12-14 11:15:14,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 24 remaining) [2022-12-14 11:15:14,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 24 remaining) [2022-12-14 11:15:14,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 24 remaining) [2022-12-14 11:15:14,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-14 11:15:14,669 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:15:14,673 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 11:15:14,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 11:15:14 BoogieIcfgContainer [2022-12-14 11:15:14,726 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 11:15:14,727 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 11:15:14,727 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 11:15:14,727 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 11:15:14,727 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:13:44" (3/4) ... [2022-12-14 11:15:14,730 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 11:15:14,730 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 11:15:14,730 INFO L158 Benchmark]: Toolchain (without parser) took 91682.69ms. Allocated memory was 134.2MB in the beginning and 178.3MB in the end (delta: 44.0MB). Free memory was 99.8MB in the beginning and 127.1MB in the end (delta: -27.3MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. [2022-12-14 11:15:14,730 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 134.2MB. Free memory is still 72.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:15:14,730 INFO L158 Benchmark]: CACSL2BoogieTranslator took 278.78ms. Allocated memory is still 134.2MB. Free memory was 99.8MB in the beginning and 86.2MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 11:15:14,731 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.35ms. Allocated memory is still 134.2MB. Free memory was 86.2MB in the beginning and 83.5MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 11:15:14,731 INFO L158 Benchmark]: Boogie Preprocessor took 22.04ms. Allocated memory is still 134.2MB. Free memory was 83.5MB in the beginning and 82.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:15:14,731 INFO L158 Benchmark]: RCFGBuilder took 645.86ms. Allocated memory was 134.2MB in the beginning and 178.3MB in the end (delta: 44.0MB). Free memory was 82.0MB in the beginning and 137.4MB in the end (delta: -55.4MB). Peak memory consumption was 46.3MB. Max. memory is 16.1GB. [2022-12-14 11:15:14,732 INFO L158 Benchmark]: TraceAbstraction took 90693.68ms. Allocated memory is still 178.3MB. Free memory was 136.4MB in the beginning and 128.1MB in the end (delta: 8.2MB). Peak memory consumption was 98.0MB. Max. memory is 16.1GB. [2022-12-14 11:15:14,732 INFO L158 Benchmark]: Witness Printer took 2.84ms. Allocated memory is still 178.3MB. Free memory was 128.1MB in the beginning and 127.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:15:14,733 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 134.2MB. Free memory is still 72.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 278.78ms. Allocated memory is still 134.2MB. Free memory was 99.8MB in the beginning and 86.2MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.35ms. Allocated memory is still 134.2MB. Free memory was 86.2MB in the beginning and 83.5MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.04ms. Allocated memory is still 134.2MB. Free memory was 83.5MB in the beginning and 82.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 645.86ms. Allocated memory was 134.2MB in the beginning and 178.3MB in the end (delta: 44.0MB). Free memory was 82.0MB in the beginning and 137.4MB in the end (delta: -55.4MB). Peak memory consumption was 46.3MB. Max. memory is 16.1GB. * TraceAbstraction took 90693.68ms. Allocated memory is still 178.3MB. Free memory was 136.4MB in the beginning and 128.1MB in the end (delta: 8.2MB). Peak memory consumption was 98.0MB. Max. memory is 16.1GB. * Witness Printer took 2.84ms. Allocated memory is still 178.3MB. Free memory was 128.1MB in the beginning and 127.1MB in the end (delta: 1.0MB). There was no memory consumed. 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 - UnprovableResult [Line: 77]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of bitwiseComplement at line 76, overapproximation of bitwiseOr at line 77, overapproximation of bitwiseAnd at line 76. Possible FailurePath: [L221] unsigned int a ; [L222] unsigned int ma = __VERIFIER_nondet_uint(); [L223] signed char ea = __VERIFIER_nondet_char(); [L224] unsigned int b ; [L225] unsigned int mb = __VERIFIER_nondet_uint(); [L226] signed char eb = __VERIFIER_nondet_char(); [L227] unsigned int r_mul ; [L228] unsigned int zero ; [L229] unsigned int one ; [L230] int sb ; [L231] int tmp ; [L232] int tmp___0 ; [L233] int tmp___1 ; [L234] int __retres16 ; VAL [ea=0, eb=0] [L238] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L29] COND TRUE ! m [L30] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0, m=0] [L80] return (__retres4); [L238] RET, EXPR base2flt(0, 0) VAL [base2flt(0, 0)=0, ea=0, eb=0] [L238] zero = base2flt(0, 0) [L239] CALL, EXPR base2flt(1, 0) VAL [\old(e)=0, \old(m)=1] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=1, e=0, m=1] [L29] COND FALSE !(! m) VAL [\old(e)=0, \old(m)=1, e=0, m=1] [L35] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=0, m=1] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=0, m=1] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=0, m=1] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-1, m=2] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-1, m=2] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-1, m=2] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-1, m=2] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-2, m=4] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-2, m=4] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-2, m=4] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-2, m=4] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-3, m=8] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-3, m=8] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-3, m=8] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-3, m=8] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-4, m=16] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-4, m=16] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-4, m=16] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-4, m=16] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-5, m=32] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-5, m=32] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-5, m=32] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-5, m=32] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-6, m=64] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-6, m=64] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-6, m=64] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-6, m=64] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-7, m=128] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-7, m=128] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-7, m=128] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-7, m=128] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-8, m=256] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-8, m=256] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-8, m=256] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-8, m=256] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-9, m=512] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-9, m=512] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-9, m=512] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-9, m=512] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-10, m=1024] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-10, m=1024] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-10, m=1024] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-10, m=1024] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-11, m=2048] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-11, m=2048] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-11, m=2048] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-11, m=2048] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-12, m=4096] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-12, m=4096] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-12, m=4096] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-12, m=4096] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-13, m=8192] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-13, m=8192] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-13, m=8192] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-13, m=8192] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-14, m=16384] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-14, m=16384] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-14, m=16384] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-14, m=16384] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-15, m=32768] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-15, m=32768] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-15, m=32768] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-15, m=32768] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-16, m=65536] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-16, m=65536] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-16, m=65536] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-16, m=65536] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-17, m=131072] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-17, m=131072] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-17, m=131072] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-17, m=131072] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-18, m=262144] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-18, m=262144] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-18, m=262144] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-18, m=262144] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-19, m=524288] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-19, m=524288] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-19, m=524288] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-19, m=524288] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-20, m=1048576] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-20, m=1048576] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-20, m=1048576] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-20, m=1048576] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-21, m=2097152] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-21, m=2097152] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-21, m=2097152] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-21, m=2097152] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-22, m=4194304] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-22, m=4194304] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-22, m=4194304] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-22, m=4194304] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-23, m=8388608] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-23, m=8388608] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-23, m=8388608] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-23, m=8388608] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-24, m=16777216] [L47] COND FALSE !(m < 1U << 24U) VAL [\old(e)=0, \old(m)=1, e=-24, m=16777216] [L76] m = m & ~ (1U << 24U) VAL [\old(e)=0, \old(m)=1, e=-24, m=0] [L77] EXPR e + 128 VAL [\old(e)=0, \old(m)=1, e=-24, m=0] [L77] EXPR (e + 128) << 24U [L77] res = m | (unsigned int )((e + 128) << 24U) [L78] __retres4 = res VAL [\old(e)=0, \old(m)=1, __retres4=1744830464, e=-24, m=0, res=1744830464] [L80] return (__retres4); [L239] RET, EXPR base2flt(1, 0) VAL [base2flt(1, 0)=1744830464, ea=0, eb=0, zero=0] [L239] one = base2flt(1, 0) [L240] CALL base2flt(ma, ea) VAL [\old(e)=0, \old(m)=16777216] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L29] COND FALSE !(! m) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L35] COND FALSE !(m < 1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L57] COND TRUE 1 VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L59] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L76] m = m & ~ (1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=0] [L77] EXPR e + 128 VAL [\old(e)=0, \old(m)=16777216, e=0, m=0] [L77] (e + 128) << 24U VAL [\old(e)=0, \old(m)=16777216, e=0, m=0] - UnprovableResult [Line: 45]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 45]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 172]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 172]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 175]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 175]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 177]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 177]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 178]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 178]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 201]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 201]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 214]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 214]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 214]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 214]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 214]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 83 locations, 24 error locations. Started 1 CEGAR loops. OverallTime: 90.6s, OverallIterations: 18, TraceHistogramMax: 24, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 77.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3561 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3555 mSDsluCounter, 6132 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4985 mSDsCounter, 699 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5251 IncrementalHoareTripleChecker+Invalid, 5950 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 699 mSolverCounterUnsat, 1147 mSDtfsCounter, 5251 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1478 GetRequests, 1025 SyntacticMatches, 64 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11984 ImplicationChecksByTransitivity, 79.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=268occurred in iteration=16, InterpolantAutomatonStates: 253, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 17 MinimizatonAttempts, 2765 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 1177 NumberOfCodeBlocks, 1177 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 1396 ConstructedInterpolants, 0 QuantifiedInterpolants, 7522 SizeOfPredicates, 6 NumberOfNonLiveVariables, 957 ConjunctsInSsa, 90 ConjunctsInUnsatCore, 29 InterpolantComputations, 11 PerfectInterpolantSequences, 272/3614 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 11:15:14,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_3.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aa6f3ffe66f40e883b6b9462d3d92566e122af5c88e351ce665cbb8a404d0554 --- 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-2329fc7 [2022-12-14 11:15:16,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:15:16,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:15:16,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:15:16,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:15:16,292 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:15:16,293 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:15:16,294 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:15:16,295 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:15:16,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:15:16,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:15:16,297 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:15:16,297 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:15:16,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:15:16,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:15:16,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:15:16,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:15:16,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:15:16,302 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:15:16,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:15:16,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:15:16,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:15:16,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:15:16,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:15:16,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:15:16,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:15:16,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:15:16,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:15:16,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:15:16,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:15:16,311 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:15:16,312 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:15:16,312 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:15:16,313 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:15:16,314 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:15:16,314 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:15:16,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:15:16,315 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:15:16,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:15:16,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:15:16,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:15:16,316 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Bitvector.epf [2022-12-14 11:15:16,333 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:15:16,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:15:16,333 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:15:16,333 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:15:16,334 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:15:16,334 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:15:16,334 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:15:16,334 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:15:16,334 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:15:16,335 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:15:16,335 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:15:16,335 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:15:16,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:15:16,335 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 11:15:16,336 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 11:15:16,336 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 11:15:16,336 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:15:16,336 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:15:16,336 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:15:16,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:15:16,336 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 11:15:16,336 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 11:15:16,337 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 11:15:16,337 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 11:15:16,337 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 11:15:16,337 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:15:16,337 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:15:16,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:15:16,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:15:16,337 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 11:15:16,338 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:15:16,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:15:16,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:15:16,343 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:15:16,343 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:15:16,344 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 11:15:16,344 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 11:15:16,344 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:15:16,344 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:15:16,344 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 11:15:16,344 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa6f3ffe66f40e883b6b9462d3d92566e122af5c88e351ce665cbb8a404d0554 [2022-12-14 11:15:16,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:15:16,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:15:16,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:15:16,598 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:15:16,599 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:15:16,600 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/bitvector/soft_float_3.c.cil.c [2022-12-14 11:15:19,249 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:15:19,421 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:15:19,422 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/sv-benchmarks/c/bitvector/soft_float_3.c.cil.c [2022-12-14 11:15:19,428 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/data/2612086b9/bd70f6cc87d644e8b4d9f9a630901c58/FLAG8c6a89a4c [2022-12-14 11:15:19,442 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/data/2612086b9/bd70f6cc87d644e8b4d9f9a630901c58 [2022-12-14 11:15:19,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:15:19,446 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:15:19,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:15:19,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:15:19,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:15:19,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:15:19" (1/1) ... [2022-12-14 11:15:19,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52882958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:15:19, skipping insertion in model container [2022-12-14 11:15:19,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:15:19" (1/1) ... [2022-12-14 11:15:19,472 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:15:19,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:15:19,590 WARN L237 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_c7f64396-eb8f-4be6-84b0-77a23a8a7995/sv-benchmarks/c/bitvector/soft_float_3.c.cil.c[727,740] [2022-12-14 11:15:19,636 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:15:19,648 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:15:19,657 WARN L237 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_c7f64396-eb8f-4be6-84b0-77a23a8a7995/sv-benchmarks/c/bitvector/soft_float_3.c.cil.c[727,740] [2022-12-14 11:15:19,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:15:19,697 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:15:19,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:15:19 WrapperNode [2022-12-14 11:15:19,698 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:15:19,699 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:15:19,699 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:15:19,699 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:15:19,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:15:19" (1/1) ... [2022-12-14 11:15:19,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:15:19" (1/1) ... [2022-12-14 11:15:19,736 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 125 [2022-12-14 11:15:19,737 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:15:19,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:15:19,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:15:19,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:15:19,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:15:19" (1/1) ... [2022-12-14 11:15:19,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:15:19" (1/1) ... [2022-12-14 11:15:19,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:15:19" (1/1) ... [2022-12-14 11:15:19,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:15:19" (1/1) ... [2022-12-14 11:15:19,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:15:19" (1/1) ... [2022-12-14 11:15:19,760 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:15:19" (1/1) ... [2022-12-14 11:15:19,762 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:15:19" (1/1) ... [2022-12-14 11:15:19,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:15:19" (1/1) ... [2022-12-14 11:15:19,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:15:19,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:15:19,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:15:19,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:15:19,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:15:19" (1/1) ... [2022-12-14 11:15:19,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:15:19,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:15:19,797 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:15:19,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:15:19,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:15:19,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 11:15:19,825 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-12-14 11:15:19,825 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-12-14 11:15:19,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:15:19,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:15:19,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 11:15:19,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 11:15:19,889 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:15:19,891 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:15:20,222 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:15:20,227 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:15:20,228 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 11:15:20,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:15:20 BoogieIcfgContainer [2022-12-14 11:15:20,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:15:20,231 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:15:20,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:15:20,233 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:15:20,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:15:19" (1/3) ... [2022-12-14 11:15:20,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693729d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:15:20, skipping insertion in model container [2022-12-14 11:15:20,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:15:19" (2/3) ... [2022-12-14 11:15:20,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693729d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:15:20, skipping insertion in model container [2022-12-14 11:15:20,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:15:20" (3/3) ... [2022-12-14 11:15:20,235 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_3.c.cil.c [2022-12-14 11:15:20,248 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:15:20,249 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2022-12-14 11:15:20,283 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:15:20,288 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;@47192c16, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:15:20,289 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-12-14 11:15:20,292 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 66 states have (on average 1.7121212121212122) internal successors, (113), 91 states have internal predecessors, (113), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 11:15:20,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 11:15:20,297 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:15:20,297 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:15:20,298 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-12-14 11:15:20,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:15:20,301 INFO L85 PathProgramCache]: Analyzing trace with hash 638430033, now seen corresponding path program 1 times [2022-12-14 11:15:20,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:15:20,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1599522865] [2022-12-14 11:15:20,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:15:20,310 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:15:20,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:15:20,311 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:15:20,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 11:15:20,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:15:20,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 11:15:20,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:15:20,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:15:20,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:15:20,381 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:15:20,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1599522865] [2022-12-14 11:15:20,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1599522865] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:15:20,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:15:20,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 11:15:20,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672350520] [2022-12-14 11:15:20,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:15:20,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 11:15:20,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:15:20,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 11:15:20,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 11:15:20,411 INFO L87 Difference]: Start difference. First operand has 98 states, 66 states have (on average 1.7121212121212122) internal successors, (113), 91 states have internal predecessors, (113), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 1 states have (on average 8.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:15:20,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:15:20,437 INFO L93 Difference]: Finished difference Result 183 states and 247 transitions. [2022-12-14 11:15:20,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 11:15:20,439 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 8.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 11:15:20,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:15:20,445 INFO L225 Difference]: With dead ends: 183 [2022-12-14 11:15:20,445 INFO L226 Difference]: Without dead ends: 69 [2022-12-14 11:15:20,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 11:15:20,455 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:15:20,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:15:20,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-12-14 11:15:20,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-12-14 11:15:20,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 50 states have (on average 1.42) internal successors, (71), 63 states have internal predecessors, (71), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:15:20,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2022-12-14 11:15:20,492 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 9 [2022-12-14 11:15:20,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:15:20,492 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2022-12-14 11:15:20,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 8.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:15:20,492 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2022-12-14 11:15:20,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 11:15:20,493 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:15:20,493 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:15:20,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 11:15:20,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:15:20,696 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-12-14 11:15:20,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:15:20,698 INFO L85 PathProgramCache]: Analyzing trace with hash 637488767, now seen corresponding path program 1 times [2022-12-14 11:15:20,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:15:20,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1348099554] [2022-12-14 11:15:20,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:15:20,700 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:15:20,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:15:20,704 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:15:20,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 11:15:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:15:20,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:15:20,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:15:20,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:15:20,863 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:15:20,863 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:15:20,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1348099554] [2022-12-14 11:15:20,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1348099554] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:15:20,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:15:20,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 11:15:20,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436611715] [2022-12-14 11:15:20,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:15:20,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:15:20,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:15:20,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:15:20,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:15:20,866 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:15:20,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:15:20,915 INFO L93 Difference]: Finished difference Result 143 states and 165 transitions. [2022-12-14 11:15:20,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:15:20,916 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 11:15:20,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:15:20,918 INFO L225 Difference]: With dead ends: 143 [2022-12-14 11:15:20,918 INFO L226 Difference]: Without dead ends: 77 [2022-12-14 11:15:20,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:15:20,921 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 9 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:15:20,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 214 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:15:20,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-12-14 11:15:20,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 74. [2022-12-14 11:15:20,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 54 states have (on average 1.3888888888888888) internal successors, (75), 67 states have internal predecessors, (75), 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) [2022-12-14 11:15:20,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2022-12-14 11:15:20,935 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 9 [2022-12-14 11:15:20,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:15:20,935 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2022-12-14 11:15:20,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:15:20,935 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2022-12-14 11:15:20,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 11:15:20,936 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:15:20,936 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:15:20,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-12-14 11:15:21,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:15:21,138 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-12-14 11:15:21,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:15:21,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1499029201, now seen corresponding path program 1 times [2022-12-14 11:15:21,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:15:21,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [284284492] [2022-12-14 11:15:21,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:15:21,142 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:15:21,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:15:21,145 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:15:21,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-14 11:15:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:15:21,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:15:21,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:15:21,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:15:21,318 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:15:21,318 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:15:21,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [284284492] [2022-12-14 11:15:21,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [284284492] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:15:21,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:15:21,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:15:21,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385723433] [2022-12-14 11:15:21,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:15:21,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:15:21,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:15:21,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:15:21,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:15:21,320 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 11:15:21,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:15:21,409 INFO L93 Difference]: Finished difference Result 185 states and 216 transitions. [2022-12-14 11:15:21,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 11:15:21,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-12-14 11:15:21,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:15:21,411 INFO L225 Difference]: With dead ends: 185 [2022-12-14 11:15:21,411 INFO L226 Difference]: Without dead ends: 121 [2022-12-14 11:15:21,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:15:21,412 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 67 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:15:21,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 196 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:15:21,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-12-14 11:15:21,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 110. [2022-12-14 11:15:21,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 89 states have (on average 1.3820224719101124) internal successors, (123), 102 states have internal predecessors, (123), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:15:21,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 131 transitions. [2022-12-14 11:15:21,427 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 131 transitions. Word has length 16 [2022-12-14 11:15:21,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:15:21,427 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 131 transitions. [2022-12-14 11:15:21,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 11:15:21,427 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 131 transitions. [2022-12-14 11:15:21,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 11:15:21,428 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:15:21,428 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:15:21,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-14 11:15:21,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:15:21,631 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting base2fltErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-12-14 11:15:21,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:15:21,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1438968756, now seen corresponding path program 1 times [2022-12-14 11:15:21,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:15:21,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [196644568] [2022-12-14 11:15:21,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:15:21,635 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:15:21,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:15:21,639 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:15:21,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-14 11:15:21,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:15:21,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:15:21,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:15:21,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:15:21,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:15:21,791 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:15:21,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [196644568] [2022-12-14 11:15:21,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [196644568] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:15:21,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:15:21,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 11:15:21,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275089942] [2022-12-14 11:15:21,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:15:21,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:15:21,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:15:21,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:15:21,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:15:21,793 INFO L87 Difference]: Start difference. First operand 110 states and 131 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 11:15:21,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:15:21,838 INFO L93 Difference]: Finished difference Result 189 states and 217 transitions. [2022-12-14 11:15:21,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 11:15:21,838 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-12-14 11:15:21,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:15:21,839 INFO L225 Difference]: With dead ends: 189 [2022-12-14 11:15:21,839 INFO L226 Difference]: Without dead ends: 100 [2022-12-14 11:15:21,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:15:21,841 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 31 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:15:21,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 217 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:15:21,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-12-14 11:15:21,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 94. [2022-12-14 11:15:21,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 73 states have (on average 1.3835616438356164) internal successors, (101), 86 states have internal predecessors, (101), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:15:21,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 109 transitions. [2022-12-14 11:15:21,850 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 109 transitions. Word has length 21 [2022-12-14 11:15:21,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:15:21,850 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 109 transitions. [2022-12-14 11:15:21,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 11:15:21,850 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 109 transitions. [2022-12-14 11:15:21,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 11:15:21,851 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:15:21,851 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:15:21,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-14 11:15:22,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:15:22,053 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-12-14 11:15:22,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:15:22,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1597331601, now seen corresponding path program 1 times [2022-12-14 11:15:22,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:15:22,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710500812] [2022-12-14 11:15:22,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:15:22,057 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:15:22,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:15:22,060 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:15:22,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-14 11:15:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:15:22,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 11:15:22,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:15:22,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:15:22,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:15:22,172 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:15:22,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710500812] [2022-12-14 11:15:22,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1710500812] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:15:22,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:15:22,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 11:15:22,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999380476] [2022-12-14 11:15:22,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:15:22,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:15:22,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:15:22,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:15:22,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:15:22,174 INFO L87 Difference]: Start difference. First operand 94 states and 109 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 11:15:22,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:15:22,234 INFO L93 Difference]: Finished difference Result 182 states and 206 transitions. [2022-12-14 11:15:22,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:15:22,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-12-14 11:15:22,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:15:22,236 INFO L225 Difference]: With dead ends: 182 [2022-12-14 11:15:22,236 INFO L226 Difference]: Without dead ends: 109 [2022-12-14 11:15:22,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 11:15:22,241 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 44 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:15:22,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 286 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:15:22,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-12-14 11:15:22,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 96. [2022-12-14 11:15:22,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 75 states have (on average 1.3733333333333333) internal successors, (103), 88 states have internal predecessors, (103), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:15:22,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2022-12-14 11:15:22,249 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 21 [2022-12-14 11:15:22,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:15:22,250 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2022-12-14 11:15:22,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 11:15:22,250 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2022-12-14 11:15:22,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 11:15:22,250 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:15:22,251 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:15:22,258 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-14 11:15:22,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:15:22,452 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-12-14 11:15:22,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:15:22,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1597440705, now seen corresponding path program 1 times [2022-12-14 11:15:22,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:15:22,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2072390978] [2022-12-14 11:15:22,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:15:22,455 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:15:22,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:15:22,458 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:15:22,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-14 11:15:22,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:15:22,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 11:15:22,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:15:22,580 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:15:22,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:15:22,697 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:15:22,698 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:15:22,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2072390978] [2022-12-14 11:15:22,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2072390978] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:15:22,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [224211380] [2022-12-14 11:15:22,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:15:22,698 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 11:15:22,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 11:15:22,700 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 11:15:22,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2022-12-14 11:15:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:15:22,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 11:15:22,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:15:22,781 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:15:22,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:15:22,838 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:15:22,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [224211380] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:15:22,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306742418] [2022-12-14 11:15:22,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:15:22,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:15:22,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:15:22,840 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:15:22,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 11:15:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:15:22,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 11:15:22,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:15:22,901 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:15:22,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:15:22,943 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:15:22,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306742418] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:15:22,943 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 11:15:22,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 7 [2022-12-14 11:15:22,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907972931] [2022-12-14 11:15:22,944 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 11:15:22,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 11:15:22,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:15:22,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 11:15:22,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-14 11:15:22,945 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 11:15:23,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:15:23,463 INFO L93 Difference]: Finished difference Result 209 states and 245 transitions. [2022-12-14 11:15:23,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 11:15:23,464 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-12-14 11:15:23,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:15:23,465 INFO L225 Difference]: With dead ends: 209 [2022-12-14 11:15:23,465 INFO L226 Difference]: Without dead ends: 142 [2022-12-14 11:15:23,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-12-14 11:15:23,466 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 195 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:15:23,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 287 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:15:23,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-12-14 11:15:23,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 97. [2022-12-14 11:15:23,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 77 states have (on average 1.3376623376623376) internal successors, (103), 89 states have internal predecessors, (103), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:15:23,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 111 transitions. [2022-12-14 11:15:23,478 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 111 transitions. Word has length 21 [2022-12-14 11:15:23,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:15:23,478 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 111 transitions. [2022-12-14 11:15:23,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 11:15:23,478 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 111 transitions. [2022-12-14 11:15:23,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-14 11:15:23,479 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:15:23,479 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:15:23,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-14 11:15:23,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-14 11:15:23,885 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2022-12-14 11:15:24,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 11:15:24,083 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-12-14 11:15:24,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:15:24,084 INFO L85 PathProgramCache]: Analyzing trace with hash -988850849, now seen corresponding path program 1 times [2022-12-14 11:15:24,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:15:24,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1214920692] [2022-12-14 11:15:24,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:15:24,087 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:15:24,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:15:24,090 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:15:24,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-12-14 11:15:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:15:24,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 11:15:24,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:15:24,148 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:15:24,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:15:24,198 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:15:24,198 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:15:24,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1214920692] [2022-12-14 11:15:24,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1214920692] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:15:24,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1618567717] [2022-12-14 11:15:24,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:15:24,198 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 11:15:24,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 11:15:24,199 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 11:15:24,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-12-14 11:15:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:15:24,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 11:15:24,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:15:24,267 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:15:24,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:15:24,288 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:15:24,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1618567717] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:15:24,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535471892] [2022-12-14 11:15:24,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:15:24,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:15:24,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:15:24,289 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:15:24,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 11:15:24,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:15:24,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 11:15:24,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:15:24,356 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:15:24,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:15:24,428 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:15:24,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535471892] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:15:24,429 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 11:15:24,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 7] total 13 [2022-12-14 11:15:24,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249978528] [2022-12-14 11:15:24,429 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 11:15:24,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 11:15:24,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:15:24,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 11:15:24,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-12-14 11:15:24,431 INFO L87 Difference]: Start difference. First operand 97 states and 111 transitions. Second operand has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 10 states have internal predecessors, (44), 1 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 11:15:24,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:15:24,685 INFO L93 Difference]: Finished difference Result 222 states and 257 transitions. [2022-12-14 11:15:24,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-14 11:15:24,686 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 10 states have internal predecessors, (44), 1 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-12-14 11:15:24,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:15:24,687 INFO L225 Difference]: With dead ends: 222 [2022-12-14 11:15:24,687 INFO L226 Difference]: Without dead ends: 150 [2022-12-14 11:15:24,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=179, Invalid=373, Unknown=0, NotChecked=0, Total=552 [2022-12-14 11:15:24,688 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 187 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:15:24,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 590 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:15:24,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-12-14 11:15:24,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 115. [2022-12-14 11:15:24,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 95 states have (on average 1.305263157894737) internal successors, (124), 107 states have internal predecessors, (124), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:15:24,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 132 transitions. [2022-12-14 11:15:24,702 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 132 transitions. Word has length 26 [2022-12-14 11:15:24,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:15:24,702 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 132 transitions. [2022-12-14 11:15:24,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 10 states have internal predecessors, (44), 1 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 11:15:24,702 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 132 transitions. [2022-12-14 11:15:24,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-14 11:15:24,703 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:15:24,703 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:15:24,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2022-12-14 11:15:24,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-12-14 11:15:25,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 11:15:25,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:15:25,305 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-12-14 11:15:25,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:15:25,306 INFO L85 PathProgramCache]: Analyzing trace with hash 411281957, now seen corresponding path program 1 times [2022-12-14 11:15:25,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:15:25,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [16397199] [2022-12-14 11:15:25,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:15:25,308 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:15:25,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:15:25,310 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:15:25,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-12-14 11:15:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:15:25,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 11:15:25,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:15:25,429 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:15:25,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:15:25,605 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:15:25,606 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:15:25,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [16397199] [2022-12-14 11:15:25,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [16397199] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:15:25,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [158698154] [2022-12-14 11:15:25,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:15:25,606 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 11:15:25,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 11:15:25,607 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 11:15:25,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-12-14 11:15:25,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:15:25,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 11:15:25,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:15:25,705 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:15:25,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:15:25,832 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:15:25,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [158698154] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:15:25,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425719311] [2022-12-14 11:15:25,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:15:25,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:15:25,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:15:25,833 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:15:25,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-14 11:15:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:15:25,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 11:15:25,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:15:26,018 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:15:26,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:15:26,234 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:15:26,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425719311] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:15:26,235 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 11:15:26,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 7, 7] total 15 [2022-12-14 11:15:26,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262546079] [2022-12-14 11:15:26,235 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 11:15:26,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 11:15:26,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:15:26,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 11:15:26,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2022-12-14 11:15:26,236 INFO L87 Difference]: Start difference. First operand 115 states and 132 transitions. Second operand has 15 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 11:15:27,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:15:27,039 INFO L93 Difference]: Finished difference Result 305 states and 365 transitions. [2022-12-14 11:15:27,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-14 11:15:27,040 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 38 [2022-12-14 11:15:27,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:15:27,041 INFO L225 Difference]: With dead ends: 305 [2022-12-14 11:15:27,041 INFO L226 Difference]: Without dead ends: 236 [2022-12-14 11:15:27,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=185, Invalid=321, Unknown=0, NotChecked=0, Total=506 [2022-12-14 11:15:27,042 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 236 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 11:15:27,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 490 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 11:15:27,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-12-14 11:15:27,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 117. [2022-12-14 11:15:27,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 97 states have (on average 1.268041237113402) internal successors, (123), 109 states have internal predecessors, (123), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:15:27,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 131 transitions. [2022-12-14 11:15:27,062 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 131 transitions. Word has length 38 [2022-12-14 11:15:27,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:15:27,062 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 131 transitions. [2022-12-14 11:15:27,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 11:15:27,062 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 131 transitions. [2022-12-14 11:15:27,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-12-14 11:15:27,063 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:15:27,063 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:15:27,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-12-14 11:15:27,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-12-14 11:15:27,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-14 11:15:27,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:15:27,665 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-12-14 11:15:27,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:15:27,666 INFO L85 PathProgramCache]: Analyzing trace with hash 472901983, now seen corresponding path program 2 times [2022-12-14 11:15:27,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:15:27,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097943182] [2022-12-14 11:15:27,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 11:15:27,668 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:15:27,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:15:27,671 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:15:27,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-12-14 11:15:27,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 11:15:27,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:15:27,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 11:15:27,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:15:27,805 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 2 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:15:27,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:15:27,988 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 2 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:15:27,988 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:15:27,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097943182] [2022-12-14 11:15:27,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097943182] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:15:27,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1848000165] [2022-12-14 11:15:27,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 11:15:27,989 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 11:15:27,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 11:15:27,990 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 11:15:27,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-12-14 11:15:28,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 11:15:28,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:15:28,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 11:15:28,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:15:28,115 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 2 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:15:28,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:15:28,175 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 2 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:15:28,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1848000165] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:15:28,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420772814] [2022-12-14 11:15:28,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 11:15:28,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:15:28,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:15:28,176 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:15:28,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-14 11:15:28,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 11:15:28,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:15:28,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 11:15:28,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:15:28,264 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 2 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:15:28,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:15:28,541 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 2 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:15:28,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420772814] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:15:28,542 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 11:15:28,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10, 11, 10, 11] total 26 [2022-12-14 11:15:28,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772093009] [2022-12-14 11:15:28,542 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 11:15:28,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-14 11:15:28,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:15:28,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-14 11:15:28,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=478, Unknown=0, NotChecked=0, Total=650 [2022-12-14 11:15:28,544 INFO L87 Difference]: Start difference. First operand 117 states and 131 transitions. Second operand has 26 states, 26 states have (on average 4.0) internal successors, (104), 23 states have internal predecessors, (104), 1 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 11:15:29,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:15:29,718 INFO L93 Difference]: Finished difference Result 315 states and 370 transitions. [2022-12-14 11:15:29,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-14 11:15:29,718 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.0) internal successors, (104), 23 states have internal predecessors, (104), 1 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2022-12-14 11:15:29,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:15:29,719 INFO L225 Difference]: With dead ends: 315 [2022-12-14 11:15:29,719 INFO L226 Difference]: Without dead ends: 243 [2022-12-14 11:15:29,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=835, Invalid=2027, Unknown=0, NotChecked=0, Total=2862 [2022-12-14 11:15:29,720 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 395 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:15:29,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 1529 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:15:29,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-12-14 11:15:29,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 155. [2022-12-14 11:15:29,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 135 states have (on average 1.2444444444444445) internal successors, (168), 147 states have internal predecessors, (168), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:15:29,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 176 transitions. [2022-12-14 11:15:29,731 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 176 transitions. Word has length 46 [2022-12-14 11:15:29,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:15:29,732 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 176 transitions. [2022-12-14 11:15:29,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.0) internal successors, (104), 23 states have internal predecessors, (104), 1 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 11:15:29,732 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 176 transitions. [2022-12-14 11:15:29,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-14 11:15:29,733 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:15:29,733 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:15:29,735 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2022-12-14 11:15:29,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-12-14 11:15:30,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-14 11:15:30,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:15:30,335 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-12-14 11:15:30,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:15:30,337 INFO L85 PathProgramCache]: Analyzing trace with hash 2137407013, now seen corresponding path program 2 times [2022-12-14 11:15:30,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:15:30,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655205580] [2022-12-14 11:15:30,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 11:15:30,338 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:15:30,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:15:30,341 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:15:30,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-12-14 11:15:30,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-14 11:15:30,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:15:30,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 11:15:30,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:15:30,374 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-12-14 11:15:30,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:15:30,374 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:15:30,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655205580] [2022-12-14 11:15:30,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [655205580] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:15:30,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:15:30,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:15:30,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634763776] [2022-12-14 11:15:30,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:15:30,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:15:30,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:15:30,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:15:30,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:15:30,375 INFO L87 Difference]: Start difference. First operand 155 states and 176 transitions. Second operand has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 11:15:30,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:15:30,413 INFO L93 Difference]: Finished difference Result 161 states and 183 transitions. [2022-12-14 11:15:30,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:15:30,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 1 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 58 [2022-12-14 11:15:30,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:15:30,415 INFO L225 Difference]: With dead ends: 161 [2022-12-14 11:15:30,415 INFO L226 Difference]: Without dead ends: 160 [2022-12-14 11:15:30,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:15:30,416 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 2 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:15:30,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 140 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:15:30,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-12-14 11:15:30,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 154. [2022-12-14 11:15:30,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 135 states have (on average 1.237037037037037) internal successors, (167), 146 states have internal predecessors, (167), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:15:30,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 175 transitions. [2022-12-14 11:15:30,424 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 175 transitions. Word has length 58 [2022-12-14 11:15:30,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:15:30,424 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 175 transitions. [2022-12-14 11:15:30,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 11:15:30,424 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 175 transitions. [2022-12-14 11:15:30,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-14 11:15:30,425 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:15:30,425 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:15:30,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-12-14 11:15:30,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:15:30,626 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-12-14 11:15:30,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:15:30,627 INFO L85 PathProgramCache]: Analyzing trace with hash 2137474539, now seen corresponding path program 1 times [2022-12-14 11:15:30,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:15:30,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710291627] [2022-12-14 11:15:30,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:15:30,629 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:15:30,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:15:30,632 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:15:30,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-12-14 11:15:30,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:15:30,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 11:15:30,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:15:30,886 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:15:30,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:15:31,400 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:15:31,401 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:15:31,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710291627] [2022-12-14 11:15:31,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1710291627] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:15:31,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1827742340] [2022-12-14 11:15:31,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:15:31,401 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 11:15:31,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 11:15:31,402 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 11:15:31,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-12-14 11:15:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:15:31,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 11:15:31,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:15:31,549 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:15:31,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:15:31,766 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:15:31,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1827742340] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:15:31,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34235884] [2022-12-14 11:15:31,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:15:31,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:15:31,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:15:31,767 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:15:31,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-14 11:15:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:15:31,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 11:15:31,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:15:32,043 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:15:32,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:15:32,854 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:15:32,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34235884] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:15:32,854 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 11:15:32,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 11, 11] total 27 [2022-12-14 11:15:32,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396764326] [2022-12-14 11:15:32,854 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 11:15:32,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-14 11:15:32,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:15:32,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-14 11:15:32,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=469, Unknown=0, NotChecked=0, Total=702 [2022-12-14 11:15:32,856 INFO L87 Difference]: Start difference. First operand 154 states and 175 transitions. Second operand has 27 states, 27 states have (on average 4.7407407407407405) internal successors, (128), 27 states have internal predecessors, (128), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 11:15:35,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:15:35,560 INFO L93 Difference]: Finished difference Result 482 states and 590 transitions. [2022-12-14 11:15:35,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-14 11:15:35,561 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.7407407407407405) internal successors, (128), 27 states have internal predecessors, (128), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 58 [2022-12-14 11:15:35,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:15:35,562 INFO L225 Difference]: With dead ends: 482 [2022-12-14 11:15:35,562 INFO L226 Difference]: Without dead ends: 414 [2022-12-14 11:15:35,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=625, Invalid=1181, Unknown=0, NotChecked=0, Total=1806 [2022-12-14 11:15:35,563 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 641 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 1359 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-14 11:15:35,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 1000 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1359 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-14 11:15:35,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-12-14 11:15:35,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 156. [2022-12-14 11:15:35,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 137 states have (on average 1.1824817518248176) internal successors, (162), 148 states have internal predecessors, (162), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:15:35,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 170 transitions. [2022-12-14 11:15:35,578 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 170 transitions. Word has length 58 [2022-12-14 11:15:35,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:15:35,578 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 170 transitions. [2022-12-14 11:15:35,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.7407407407407405) internal successors, (128), 27 states have internal predecessors, (128), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 11:15:35,579 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 170 transitions. [2022-12-14 11:15:35,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-14 11:15:35,579 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:15:35,579 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:15:35,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-12-14 11:15:35,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2022-12-14 11:15:36,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-12-14 11:15:36,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:15:36,182 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-12-14 11:15:36,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:15:36,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1631261023, now seen corresponding path program 3 times [2022-12-14 11:15:36,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:15:36,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [847181306] [2022-12-14 11:15:36,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 11:15:36,184 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:15:36,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:15:36,187 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:15:36,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-12-14 11:15:36,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2022-12-14 11:15:36,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:15:36,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-14 11:15:36,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:15:36,454 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 2 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:15:36,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:15:37,191 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 2 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:15:37,191 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:15:37,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [847181306] [2022-12-14 11:15:37,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [847181306] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:15:37,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2077940081] [2022-12-14 11:15:37,191 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 11:15:37,191 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 11:15:37,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 11:15:37,192 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 11:15:37,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2022-12-14 11:15:37,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2022-12-14 11:15:37,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:15:37,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-14 11:15:37,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:15:37,406 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 2 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:15:37,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:15:37,629 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 2 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:15:37,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2077940081] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:15:37,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743958162] [2022-12-14 11:15:37,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 11:15:37,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:15:37,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:15:37,631 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:15:37,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-12-14 11:15:37,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2022-12-14 11:15:37,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:15:37,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-14 11:15:37,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:15:37,787 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 2 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:15:37,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:15:38,026 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 2 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:15:38,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743958162] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:15:38,026 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 11:15:38,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 18, 19, 18, 19] total 35 [2022-12-14 11:15:38,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472785328] [2022-12-14 11:15:38,026 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 11:15:38,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-14 11:15:38,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:15:38,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-14 11:15:38,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=886, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 11:15:38,029 INFO L87 Difference]: Start difference. First operand 156 states and 170 transitions. Second operand has 35 states, 35 states have (on average 4.457142857142857) internal successors, (156), 33 states have internal predecessors, (156), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 11:15:43,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:15:43,397 INFO L93 Difference]: Finished difference Result 556 states and 657 transitions. [2022-12-14 11:15:43,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-12-14 11:15:43,398 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.457142857142857) internal successors, (156), 33 states have internal predecessors, (156), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 86 [2022-12-14 11:15:43,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:15:43,399 INFO L225 Difference]: With dead ends: 556 [2022-12-14 11:15:43,399 INFO L226 Difference]: Without dead ends: 485 [2022-12-14 11:15:43,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2296 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=2711, Invalid=7189, Unknown=0, NotChecked=0, Total=9900 [2022-12-14 11:15:43,401 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 758 mSDsluCounter, 3311 mSDsCounter, 0 mSdLazyCounter, 1564 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 3544 SdHoareTripleChecker+Invalid, 1633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:15:43,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 3544 Invalid, 1633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1564 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-14 11:15:43,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-12-14 11:15:43,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 234. [2022-12-14 11:15:43,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 215 states have (on average 1.1906976744186046) internal successors, (256), 226 states have internal predecessors, (256), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:15:43,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 264 transitions. [2022-12-14 11:15:43,420 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 264 transitions. Word has length 86 [2022-12-14 11:15:43,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:15:43,420 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 264 transitions. [2022-12-14 11:15:43,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.457142857142857) internal successors, (156), 33 states have internal predecessors, (156), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 11:15:43,420 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 264 transitions. [2022-12-14 11:15:43,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-14 11:15:43,421 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:15:43,421 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:15:43,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2022-12-14 11:15:43,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-12-14 11:15:43,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-12-14 11:15:44,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:15:44,023 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-12-14 11:15:44,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:15:44,024 INFO L85 PathProgramCache]: Analyzing trace with hash 83258859, now seen corresponding path program 2 times [2022-12-14 11:15:44,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:15:44,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760000462] [2022-12-14 11:15:44,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 11:15:44,026 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:15:44,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:15:44,029 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:15:44,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-12-14 11:15:44,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 11:15:44,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:15:44,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-14 11:15:44,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:15:44,559 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 9 proven. 483 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:15:44,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:15:46,090 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 9 proven. 483 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:15:46,090 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:15:46,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [760000462] [2022-12-14 11:15:46,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [760000462] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:15:46,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1649582791] [2022-12-14 11:15:46,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 11:15:46,091 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 11:15:46,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 11:15:46,092 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 11:15:46,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2022-12-14 11:15:46,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 11:15:46,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:15:46,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-14 11:15:46,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:15:46,405 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 9 proven. 483 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:15:46,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:15:46,985 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 9 proven. 483 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:15:46,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1649582791] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:15:46,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042586940] [2022-12-14 11:15:46,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 11:15:46,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:15:46,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:15:46,987 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:15:46,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-12-14 11:15:47,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 11:15:47,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:15:47,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-14 11:15:47,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:15:47,397 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 9 proven. 483 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:15:47,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:15:50,365 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 9 proven. 483 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:15:50,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042586940] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:15:50,366 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 11:15:50,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18, 18, 19, 19] total 51 [2022-12-14 11:15:50,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633663970] [2022-12-14 11:15:50,366 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 11:15:50,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-12-14 11:15:50,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:15:50,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-12-14 11:15:50,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=789, Invalid=1761, Unknown=0, NotChecked=0, Total=2550 [2022-12-14 11:15:50,368 INFO L87 Difference]: Start difference. First operand 234 states and 264 transitions. Second operand has 51 states, 51 states have (on average 4.862745098039215) internal successors, (248), 51 states have internal predecessors, (248), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 11:16:00,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:16:00,833 INFO L93 Difference]: Finished difference Result 851 states and 1060 transitions. [2022-12-14 11:16:00,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-12-14 11:16:00,834 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 4.862745098039215) internal successors, (248), 51 states have internal predecessors, (248), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 98 [2022-12-14 11:16:00,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:16:00,837 INFO L225 Difference]: With dead ends: 851 [2022-12-14 11:16:00,837 INFO L226 Difference]: Without dead ends: 783 [2022-12-14 11:16:00,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 644 GetRequests, 563 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=2273, Invalid=4533, Unknown=0, NotChecked=0, Total=6806 [2022-12-14 11:16:00,840 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 1459 mSDsluCounter, 2384 mSDsCounter, 0 mSdLazyCounter, 4311 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1459 SdHoareTripleChecker+Valid, 2526 SdHoareTripleChecker+Invalid, 4683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 4311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:16:00,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1459 Valid, 2526 Invalid, 4683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 4311 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-12-14 11:16:00,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2022-12-14 11:16:00,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 236. [2022-12-14 11:16:00,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 217 states have (on average 1.119815668202765) internal successors, (243), 228 states have internal predecessors, (243), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:16:00,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 251 transitions. [2022-12-14 11:16:00,888 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 251 transitions. Word has length 98 [2022-12-14 11:16:00,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:16:00,889 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 251 transitions. [2022-12-14 11:16:00,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 4.862745098039215) internal successors, (248), 51 states have internal predecessors, (248), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 11:16:00,889 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 251 transitions. [2022-12-14 11:16:00,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-12-14 11:16:00,891 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:16:00,891 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:16:00,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 0 [2022-12-14 11:16:01,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-12-14 11:16:01,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-12-14 11:16:01,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:16:01,493 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-12-14 11:16:01,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:16:01,494 INFO L85 PathProgramCache]: Analyzing trace with hash -598490273, now seen corresponding path program 4 times [2022-12-14 11:16:01,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:16:01,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [599595602] [2022-12-14 11:16:01,495 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 11:16:01,496 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:16:01,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:16:01,498 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:16:01,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-12-14 11:16:01,560 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 11:16:01,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:16:01,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-14 11:16:01,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:16:01,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1382 backedges. 2 proven. 1380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:16:01,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:16:04,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1382 backedges. 2 proven. 1380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:16:04,660 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:16:04,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [599595602] [2022-12-14 11:16:04,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [599595602] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:16:04,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1594223849] [2022-12-14 11:16:04,660 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 11:16:04,660 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 11:16:04,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 11:16:04,661 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 11:16:04,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2022-12-14 11:16:04,794 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 11:16:04,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:16:04,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-14 11:16:04,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:16:04,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1382 backedges. 2 proven. 1380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:16:04,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:16:05,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1382 backedges. 2 proven. 1380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:16:05,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1594223849] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:16:05,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379391394] [2022-12-14 11:16:05,291 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 11:16:05,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:16:05,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:16:05,292 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:16:05,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-12-14 11:16:05,363 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 11:16:05,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:16:05,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-14 11:16:05,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:16:05,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1382 backedges. 2 proven. 1380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:16:05,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:16:05,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1382 backedges. 2 proven. 1380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:16:05,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379391394] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:16:05,817 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 11:16:05,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27, 27, 27, 27] total 53 [2022-12-14 11:16:05,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075945883] [2022-12-14 11:16:05,817 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 11:16:05,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-12-14 11:16:05,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:16:05,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-12-14 11:16:05,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=731, Invalid=2131, Unknown=0, NotChecked=0, Total=2862 [2022-12-14 11:16:05,819 INFO L87 Difference]: Start difference. First operand 236 states and 251 transitions. Second operand has 54 states, 53 states have (on average 4.886792452830188) internal successors, (259), 52 states have internal predecessors, (259), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 11:16:46,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:16:46,528 INFO L93 Difference]: Finished difference Result 486 states and 552 transitions. [2022-12-14 11:16:46,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-12-14 11:16:46,530 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 4.886792452830188) internal successors, (259), 52 states have internal predecessors, (259), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 136 [2022-12-14 11:16:46,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:16:46,531 INFO L225 Difference]: With dead ends: 486 [2022-12-14 11:16:46,531 INFO L226 Difference]: Without dead ends: 482 [2022-12-14 11:16:46,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 894 GetRequests, 766 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2112 ImplicationChecksByTransitivity, 38.8s TimeCoverageRelationStatistics Valid=4535, Invalid=12235, Unknown=0, NotChecked=0, Total=16770 [2022-12-14 11:16:46,534 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 1243 mSDsluCounter, 4151 mSDsCounter, 0 mSdLazyCounter, 4279 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1243 SdHoareTripleChecker+Valid, 4258 SdHoareTripleChecker+Invalid, 4433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 4279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:16:46,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1243 Valid, 4258 Invalid, 4433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 4279 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-12-14 11:16:46,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2022-12-14 11:16:46,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 360. [2022-12-14 11:16:46,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 341 states have (on average 1.2082111436950147) internal successors, (412), 352 states have internal predecessors, (412), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:16:46,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 420 transitions. [2022-12-14 11:16:46,593 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 420 transitions. Word has length 136 [2022-12-14 11:16:46,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:16:46,594 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 420 transitions. [2022-12-14 11:16:46,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 4.886792452830188) internal successors, (259), 52 states have internal predecessors, (259), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 11:16:46,594 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 420 transitions. [2022-12-14 11:16:46,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-12-14 11:16:46,595 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:16:46,595 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:16:46,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-12-14 11:16:46,798 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (30)] Ended with exit code 0 [2022-12-14 11:16:47,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-12-14 11:16:47,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:16:47,197 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-12-14 11:16:47,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:16:47,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1598853735, now seen corresponding path program 1 times [2022-12-14 11:16:47,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:16:47,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1924266863] [2022-12-14 11:16:47,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:16:47,200 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:16:47,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:16:47,202 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:16:47,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-12-14 11:16:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:16:47,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:16:47,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:16:47,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1393 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1385 trivial. 0 not checked. [2022-12-14 11:16:47,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:16:47,317 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:16:47,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1924266863] [2022-12-14 11:16:47,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1924266863] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:16:47,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:16:47,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:16:47,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490859119] [2022-12-14 11:16:47,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:16:47,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:16:47,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:16:47,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:16:47,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:16:47,319 INFO L87 Difference]: Start difference. First operand 360 states and 420 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 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) [2022-12-14 11:16:47,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:16:47,929 INFO L93 Difference]: Finished difference Result 378 states and 441 transitions. [2022-12-14 11:16:47,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 11:16:47,930 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 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 152 [2022-12-14 11:16:47,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:16:47,932 INFO L225 Difference]: With dead ends: 378 [2022-12-14 11:16:47,932 INFO L226 Difference]: Without dead ends: 375 [2022-12-14 11:16:47,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:16:47,932 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 63 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 11:16:47,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 153 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 11:16:47,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-12-14 11:16:47,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 367. [2022-12-14 11:16:47,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 348 states have (on average 1.206896551724138) internal successors, (420), 359 states have internal predecessors, (420), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:16:47,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 428 transitions. [2022-12-14 11:16:47,998 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 428 transitions. Word has length 152 [2022-12-14 11:16:47,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:16:47,999 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 428 transitions. [2022-12-14 11:16:47,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 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) [2022-12-14 11:16:47,999 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 428 transitions. [2022-12-14 11:16:47,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-12-14 11:16:48,000 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:16:48,000 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:16:48,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Ended with exit code 0 [2022-12-14 11:16:48,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:16:48,201 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting base2fltErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-12-14 11:16:48,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:16:48,202 INFO L85 PathProgramCache]: Analyzing trace with hash 264409090, now seen corresponding path program 1 times [2022-12-14 11:16:48,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:16:48,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1033226247] [2022-12-14 11:16:48,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:16:48,205 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:16:48,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:16:48,208 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:16:48,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-12-14 11:16:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:16:48,310 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 11:16:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:16:48,402 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-12-14 11:16:48,402 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 11:16:48,403 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location base2fltErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 24 remaining) [2022-12-14 11:16:48,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 24 remaining) [2022-12-14 11:16:48,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 24 remaining) [2022-12-14 11:16:48,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 24 remaining) [2022-12-14 11:16:48,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 24 remaining) [2022-12-14 11:16:48,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 24 remaining) [2022-12-14 11:16:48,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 24 remaining) [2022-12-14 11:16:48,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 24 remaining) [2022-12-14 11:16:48,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 24 remaining) [2022-12-14 11:16:48,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 24 remaining) [2022-12-14 11:16:48,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 24 remaining) [2022-12-14 11:16:48,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 24 remaining) [2022-12-14 11:16:48,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 24 remaining) [2022-12-14 11:16:48,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 24 remaining) [2022-12-14 11:16:48,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 24 remaining) [2022-12-14 11:16:48,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 24 remaining) [2022-12-14 11:16:48,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 24 remaining) [2022-12-14 11:16:48,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 24 remaining) [2022-12-14 11:16:48,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 24 remaining) [2022-12-14 11:16:48,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 24 remaining) [2022-12-14 11:16:48,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 24 remaining) [2022-12-14 11:16:48,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 24 remaining) [2022-12-14 11:16:48,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 24 remaining) [2022-12-14 11:16:48,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 24 remaining) [2022-12-14 11:16:48,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Ended with exit code 0 [2022-12-14 11:16:48,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:16:48,617 INFO L445 BasicCegarLoop]: Path program histogram: [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:16:48,628 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 11:16:48,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 11:16:48 BoogieIcfgContainer [2022-12-14 11:16:48,719 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 11:16:48,719 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 11:16:48,719 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 11:16:48,719 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 11:16:48,720 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:15:20" (3/4) ... [2022-12-14 11:16:48,721 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-14 11:16:48,773 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 11:16:48,774 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 11:16:48,774 INFO L158 Benchmark]: Toolchain (without parser) took 89328.72ms. Allocated memory is still 79.7MB. Free memory was 40.3MB in the beginning and 24.0MB in the end (delta: 16.3MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. [2022-12-14 11:16:48,774 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 56.6MB. Free memory is still 35.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:16:48,775 INFO L158 Benchmark]: CACSL2BoogieTranslator took 251.04ms. Allocated memory is still 79.7MB. Free memory was 40.0MB in the beginning and 48.1MB in the end (delta: -8.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 11:16:48,775 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.14ms. Allocated memory is still 79.7MB. Free memory was 48.1MB in the beginning and 46.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 11:16:48,775 INFO L158 Benchmark]: Boogie Preprocessor took 28.79ms. Allocated memory is still 79.7MB. Free memory was 46.3MB in the beginning and 44.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 11:16:48,776 INFO L158 Benchmark]: RCFGBuilder took 462.67ms. Allocated memory is still 79.7MB. Free memory was 44.5MB in the beginning and 49.0MB in the end (delta: -4.5MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2022-12-14 11:16:48,776 INFO L158 Benchmark]: TraceAbstraction took 88487.74ms. Allocated memory is still 79.7MB. Free memory was 48.4MB in the beginning and 30.3MB in the end (delta: 18.1MB). Peak memory consumption was 17.2MB. Max. memory is 16.1GB. [2022-12-14 11:16:48,776 INFO L158 Benchmark]: Witness Printer took 54.70ms. Allocated memory is still 79.7MB. Free memory was 30.3MB in the beginning and 24.0MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-12-14 11:16:48,778 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 56.6MB. Free memory is still 35.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 251.04ms. Allocated memory is still 79.7MB. Free memory was 40.0MB in the beginning and 48.1MB in the end (delta: -8.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.14ms. Allocated memory is still 79.7MB. Free memory was 48.1MB in the beginning and 46.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.79ms. Allocated memory is still 79.7MB. Free memory was 46.3MB in the beginning and 44.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 462.67ms. Allocated memory is still 79.7MB. Free memory was 44.5MB in the beginning and 49.0MB in the end (delta: -4.5MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. * TraceAbstraction took 88487.74ms. Allocated memory is still 79.7MB. Free memory was 48.4MB in the beginning and 30.3MB in the end (delta: 18.1MB). Peak memory consumption was 17.2MB. Max. memory is 16.1GB. * Witness Printer took 54.70ms. Allocated memory is still 79.7MB. Free memory was 30.3MB in the beginning and 24.0MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. 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 - CounterExampleResult [Line: 77]: integer overflow possible integer overflow possible We found a FailurePath: [L221] unsigned int a ; [L222] unsigned int ma = __VERIFIER_nondet_uint(); [L223] signed char ea = __VERIFIER_nondet_char(); [L224] unsigned int b ; [L225] unsigned int mb = __VERIFIER_nondet_uint(); [L226] signed char eb = __VERIFIER_nondet_char(); [L227] unsigned int r_mul ; [L228] unsigned int zero ; [L229] unsigned int one ; [L230] int sb ; [L231] int tmp ; [L232] int tmp___0 ; [L233] int tmp___1 ; [L234] int __retres16 ; [L238] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L29] COND TRUE ! m [L30] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0, m=0] [L80] return (__retres4); VAL [\old(e)=0, \old(m)=0, \result=0, __retres4=0, e=0, m=0] [L238] RET, EXPR base2flt(0, 0) VAL [base2flt(0, 0)=0] [L238] zero = base2flt(0, 0) [L239] CALL, EXPR base2flt(1, 0) VAL [\old(e)=0, \old(m)=1] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=1, e=0, m=1] [L29] COND FALSE !(! m) VAL [\old(e)=0, \old(m)=1, e=0, m=1] [L35] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=0, m=1] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=0, m=1] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=0, m=1] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-1, m=2] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-1, m=2] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-1, m=2] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-1, m=2] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-2, m=4] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-2, m=4] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-2, m=4] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-2, m=4] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-3, m=8] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-3, m=8] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-3, m=8] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-3, m=8] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-4, m=16] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-4, m=16] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-4, m=16] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-4, m=16] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-5, m=32] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-5, m=32] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-5, m=32] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-5, m=32] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-6, m=64] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-6, m=64] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-6, m=64] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-6, m=64] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-7, m=128] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-7, m=128] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-7, m=128] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-7, m=128] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-8, m=256] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-8, m=256] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-8, m=256] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-8, m=256] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-9, m=512] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-9, m=512] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-9, m=512] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-9, m=512] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-10, m=1024] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-10, m=1024] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-10, m=1024] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-10, m=1024] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-11, m=2048] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-11, m=2048] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-11, m=2048] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-11, m=2048] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-12, m=4096] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-12, m=4096] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-12, m=4096] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-12, m=4096] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-13, m=8192] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-13, m=8192] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-13, m=8192] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-13, m=8192] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-14, m=16384] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-14, m=16384] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-14, m=16384] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-14, m=16384] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-15, m=32768] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-15, m=32768] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-15, m=32768] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-15, m=32768] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-16, m=65536] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-16, m=65536] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-16, m=65536] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-16, m=65536] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-17, m=131072] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-17, m=131072] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-17, m=131072] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-17, m=131072] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-18, m=262144] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-18, m=262144] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-18, m=262144] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-18, m=262144] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-19, m=524288] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-19, m=524288] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-19, m=524288] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-19, m=524288] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-20, m=1048576] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-20, m=1048576] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-20, m=1048576] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-20, m=1048576] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-21, m=2097152] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-21, m=2097152] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-21, m=2097152] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-21, m=2097152] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-22, m=4194304] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-22, m=4194304] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-22, m=4194304] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-22, m=4194304] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-23, m=8388608] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-23, m=8388608] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-23, m=8388608] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-23, m=8388608] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-24, m=16777216] [L47] COND FALSE !(m < 1U << 24U) VAL [\old(e)=0, \old(m)=1, e=-24, m=16777216] [L76] m = m & ~ (1U << 24U) VAL [\old(e)=0, \old(m)=1, e=-24, m=0] [L77] EXPR e + 128 VAL [\old(e)=0, \old(m)=1, e=-24, m=0] [L77] EXPR (e + 128) << 24U [L77] res = m | (unsigned int )((e + 128) << 24U) [L78] __retres4 = res VAL [\old(e)=0, \old(m)=1, __retres4=1744830464, e=-24, m=0, res=1744830464] [L80] return (__retres4); VAL [\old(e)=0, \old(m)=1, \result=1744830464, __retres4=1744830464, e=-24, m=0, res=1744830464] [L239] RET, EXPR base2flt(1, 0) VAL [base2flt(1, 0)=1744830464, zero=0] [L239] one = base2flt(1, 0) [L240] CALL base2flt(ma, ea) VAL [\old(e)=0, \old(m)=16777216] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L29] COND FALSE !(! m) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L35] COND FALSE !(m < 1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L57] COND TRUE 1 VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L59] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L76] m = m & ~ (1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=0] [L77] EXPR e + 128 VAL [\old(e)=0, \old(m)=16777216, e=0, m=0] [L77] (e + 128) << 24U VAL [\old(e)=0, \old(m)=16777216, e=0, m=0] - UnprovableResult [Line: 45]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 45]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 172]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 172]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 175]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 175]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 177]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 177]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 178]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 178]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 201]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 201]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 214]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 214]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 214]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 214]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 214]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 98 locations, 24 error locations. Started 1 CEGAR loops. OverallTime: 88.3s, OverallIterations: 16, TraceHistogramMax: 24, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 63.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5330 SdHoareTripleChecker+Valid, 13.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5330 mSDsluCounter, 15538 SdHoareTripleChecker+Invalid, 12.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14054 mSDsCounter, 852 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12954 IncrementalHoareTripleChecker+Invalid, 13806 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 852 mSolverCounterUnsat, 1484 mSDtfsCounter, 12954 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3658 GetRequests, 3184 SyntacticMatches, 0 SemanticMatches, 474 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5981 ImplicationChecksByTransitivity, 56.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=367occurred in iteration=15, InterpolantAutomatonStates: 339, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 15 MinimizatonAttempts, 1512 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 16.1s InterpolantComputationTime, 1968 NumberOfCodeBlocks, 1921 NumberOfCodeBlocksAsserted, 77 NumberOfCheckSat, 3285 ConstructedInterpolants, 8 QuantifiedInterpolants, 23436 SizeOfPredicates, 40 NumberOfNonLiveVariables, 2948 ConjunctsInSsa, 308 ConjunctsInUnsatCore, 55 InterpolantComputations, 7 PerfectInterpolantSequences, 1736/16718 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-12-14 11:16:48,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f64396-eb8f-4be6-84b0-77a23a8a7995/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)