./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 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_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW --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 f330893f1140a32f6e6dacd6cc5115391759545d59ea17334f6f3b644ed5a51c --- 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-4e7fbc6 [2022-11-23 13:50:45,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:50:45,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:50:45,956 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:50:45,956 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:50:45,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:50:45,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:50:45,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:50:45,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:50:45,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:50:45,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:50:45,975 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:50:45,975 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:50:45,976 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:50:45,977 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:50:45,978 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:50:45,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:50:45,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:50:45,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:50:45,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:50:45,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:50:45,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:50:45,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:50:45,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:50:46,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:50:46,008 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:50:46,008 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:50:46,010 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:50:46,011 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:50:46,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:50:46,012 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:50:46,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:50:46,014 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:50:46,015 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:50:46,016 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:50:46,017 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:50:46,017 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:50:46,018 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:50:46,018 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:50:46,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:50:46,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:50:46,020 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-23 13:50:46,062 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:50:46,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:50:46,063 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:50:46,063 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:50:46,064 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:50:46,065 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:50:46,065 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:50:46,065 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:50:46,065 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:50:46,066 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 13:50:46,067 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:50:46,067 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:50:46,067 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 13:50:46,067 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 13:50:46,068 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:50:46,068 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 13:50:46,068 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 13:50:46,068 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 13:50:46,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:50:46,070 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 13:50:46,070 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 13:50:46,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 13:50:46,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 13:50:46,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:50:46,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 13:50:46,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:50:46,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 13:50:46,072 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 13:50:46,072 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 13:50:46,073 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 13:50:46,073 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:50:46,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 13:50:46,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:50:46,074 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:50:46,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:50:46,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:50:46,075 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 13:50:46,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:50:46,075 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 13:50:46,075 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 13:50:46,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 13:50:46,076 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 13:50:46,076 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:50:46,076 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_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f330893f1140a32f6e6dacd6cc5115391759545d59ea17334f6f3b644ed5a51c [2022-11-23 13:50:46,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:50:46,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:50:46,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:50:46,385 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:50:46,386 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:50:46,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2022-11-23 13:50:49,503 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:50:49,788 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:50:49,789 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2022-11-23 13:50:49,796 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/data/c93fcb221/0d1650d760c84883b85e78cd856ca4e4/FLAG6eff8ee21 [2022-11-23 13:50:49,809 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/data/c93fcb221/0d1650d760c84883b85e78cd856ca4e4 [2022-11-23 13:50:49,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:50:49,813 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:50:49,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:50:49,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:50:49,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:50:49,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:50:49" (1/1) ... [2022-11-23 13:50:49,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@376d4e93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:49, skipping insertion in model container [2022-11-23 13:50:49,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:50:49" (1/1) ... [2022-11-23 13:50:49,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:50:49,852 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:50:49,990 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_625cabb6-aa26-425e-882d-be9f291e2ff5/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c[728,741] [2022-11-23 13:50:50,037 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:50:50,053 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:50:50,064 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_625cabb6-aa26-425e-882d-be9f291e2ff5/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c[728,741] [2022-11-23 13:50:50,098 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:50:50,123 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:50:50,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:50 WrapperNode [2022-11-23 13:50:50,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:50:50,125 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:50:50,125 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:50:50,125 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:50:50,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:50" (1/1) ... [2022-11-23 13:50:50,158 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:50" (1/1) ... [2022-11-23 13:50:50,188 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 178 [2022-11-23 13:50:50,189 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:50:50,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:50:50,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:50:50,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:50:50,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:50" (1/1) ... [2022-11-23 13:50:50,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:50" (1/1) ... [2022-11-23 13:50:50,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:50" (1/1) ... [2022-11-23 13:50:50,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:50" (1/1) ... [2022-11-23 13:50:50,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:50" (1/1) ... [2022-11-23 13:50:50,225 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:50" (1/1) ... [2022-11-23 13:50:50,227 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:50" (1/1) ... [2022-11-23 13:50:50,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:50" (1/1) ... [2022-11-23 13:50:50,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:50:50,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:50:50,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:50:50,242 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:50:50,243 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:50" (1/1) ... [2022-11-23 13:50:50,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:50:50,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:50:50,279 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:50:50,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:50:50,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 13:50:50,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 13:50:50,332 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-23 13:50:50,332 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-23 13:50:50,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:50:50,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:50:50,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-23 13:50:50,333 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-23 13:50:50,444 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:50:50,446 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:50:50,997 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:50:51,289 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:50:51,290 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 13:50:51,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:50:51 BoogieIcfgContainer [2022-11-23 13:50:51,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:50:51,299 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:50:51,299 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:50:51,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:50:51,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:50:49" (1/3) ... [2022-11-23 13:50:51,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18b53f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:50:51, skipping insertion in model container [2022-11-23 13:50:51,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:50" (2/3) ... [2022-11-23 13:50:51,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18b53f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:50:51, skipping insertion in model container [2022-11-23 13:50:51,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:50:51" (3/3) ... [2022-11-23 13:50:51,309 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2022-11-23 13:50:51,329 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:50:51,329 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-23 13:50:51,411 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:50:51,419 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;@461e2a83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:50:51,420 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-23 13:50:51,427 INFO L276 IsEmpty]: Start isEmpty. Operand has 71 states, 45 states have (on average 1.7333333333333334) internal successors, (78), 64 states have internal predecessors, (78), 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) [2022-11-23 13:50:51,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 13:50:51,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:50:51,441 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:50:51,443 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 13:50:51,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:50:51,451 INFO L85 PathProgramCache]: Analyzing trace with hash -323326942, now seen corresponding path program 1 times [2022-11-23 13:50:51,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:50:51,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170419877] [2022-11-23 13:50:51,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:50:51,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:50:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:50:51,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:50:51,667 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:50:51,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170419877] [2022-11-23 13:50:51,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170419877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:50:51,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:50:51,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 13:50:51,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20685138] [2022-11-23 13:50:51,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:50:51,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 13:50:51,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:50:51,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 13:50:51,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 13:50:51,730 INFO L87 Difference]: Start difference. First operand has 71 states, 45 states have (on average 1.7333333333333334) internal successors, (78), 64 states have internal predecessors, (78), 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) [2022-11-23 13:50:51,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:50:51,820 INFO L93 Difference]: Finished difference Result 138 states and 177 transitions. [2022-11-23 13:50:51,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 13:50:51,823 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 [2022-11-23 13:50:51,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:50:51,831 INFO L225 Difference]: With dead ends: 138 [2022-11-23 13:50:51,832 INFO L226 Difference]: Without dead ends: 62 [2022-11-23 13:50:51,836 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 [2022-11-23 13:50:51,840 INFO L413 NwaCegarLoop]: 70 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, 70 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 [2022-11-23 13:50:51,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 13:50:51,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-23 13:50:51,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-11-23 13:50:51,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 56 states have internal predecessors, (63), 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) [2022-11-23 13:50:51,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2022-11-23 13:50:51,894 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 71 transitions. Word has length 8 [2022-11-23 13:50:51,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:50:51,896 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 71 transitions. [2022-11-23 13:50:51,896 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) [2022-11-23 13:50:51,896 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 71 transitions. [2022-11-23 13:50:51,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 13:50:51,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:50:51,899 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:50:51,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 13:50:51,899 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 13:50:51,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:50:51,901 INFO L85 PathProgramCache]: Analyzing trace with hash -324519102, now seen corresponding path program 1 times [2022-11-23 13:50:51,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:50:51,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392691101] [2022-11-23 13:50:51,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:50:51,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:50:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:50:52,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:50:52,038 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:50:52,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392691101] [2022-11-23 13:50:52,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392691101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:50:52,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:50:52,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:50:52,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441686849] [2022-11-23 13:50:52,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:50:52,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:50:52,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:50:52,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:50:52,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 13:50:52,042 INFO L87 Difference]: Start difference. First operand 62 states and 71 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) [2022-11-23 13:50:52,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:50:52,220 INFO L93 Difference]: Finished difference Result 160 states and 194 transitions. [2022-11-23 13:50:52,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 13:50:52,221 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 [2022-11-23 13:50:52,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:50:52,223 INFO L225 Difference]: With dead ends: 160 [2022-11-23 13:50:52,225 INFO L226 Difference]: Without dead ends: 100 [2022-11-23 13:50:52,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:50:52,230 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 55 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:50:52,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 151 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:50:52,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-23 13:50:52,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 92. [2022-11-23 13:50:52,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 70 states have (on average 1.5) internal successors, (105), 85 states have internal predecessors, (105), 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) [2022-11-23 13:50:52,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 113 transitions. [2022-11-23 13:50:52,257 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 113 transitions. Word has length 8 [2022-11-23 13:50:52,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:50:52,257 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 113 transitions. [2022-11-23 13:50:52,258 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) [2022-11-23 13:50:52,258 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 113 transitions. [2022-11-23 13:50:52,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 13:50:52,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:50:52,259 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:50:52,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 13:50:52,259 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 13:50:52,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:50:52,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1680882022, now seen corresponding path program 1 times [2022-11-23 13:50:52,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:50:52,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761614316] [2022-11-23 13:50:52,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:50:52,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:50:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:50:52,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:50:52,381 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:50:52,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761614316] [2022-11-23 13:50:52,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761614316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:50:52,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:50:52,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 13:50:52,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215200442] [2022-11-23 13:50:52,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:50:52,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 13:50:52,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:50:52,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 13:50:52,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:50:52,384 INFO L87 Difference]: Start difference. First operand 92 states and 113 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) [2022-11-23 13:50:52,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:50:52,536 INFO L93 Difference]: Finished difference Result 201 states and 248 transitions. [2022-11-23 13:50:52,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 13:50:52,537 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 [2022-11-23 13:50:52,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:50:52,551 INFO L225 Difference]: With dead ends: 201 [2022-11-23 13:50:52,552 INFO L226 Difference]: Without dead ends: 111 [2022-11-23 13:50:52,557 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 [2022-11-23 13:50:52,560 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 87 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:50:52,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 199 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:50:52,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-23 13:50:52,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 98. [2022-11-23 13:50:52,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 76 states have (on average 1.4605263157894737) internal successors, (111), 91 states have internal predecessors, (111), 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) [2022-11-23 13:50:52,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 119 transitions. [2022-11-23 13:50:52,577 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 119 transitions. Word has length 12 [2022-11-23 13:50:52,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:50:52,577 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 119 transitions. [2022-11-23 13:50:52,578 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) [2022-11-23 13:50:52,578 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 119 transitions. [2022-11-23 13:50:52,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 13:50:52,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:50:52,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:50:52,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 13:50:52,579 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 13:50:52,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:50:52,580 INFO L85 PathProgramCache]: Analyzing trace with hash -567735018, now seen corresponding path program 1 times [2022-11-23 13:50:52,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:50:52,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956670198] [2022-11-23 13:50:52,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:50:52,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:50:52,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:50:52,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:50:52,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:50:52,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956670198] [2022-11-23 13:50:52,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956670198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:50:52,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:50:52,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 13:50:52,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619642840] [2022-11-23 13:50:52,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:50:52,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 13:50:52,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:50:52,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 13:50:52,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:50:52,713 INFO L87 Difference]: Start difference. First operand 98 states and 119 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2022-11-23 13:50:52,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:50:52,845 INFO L93 Difference]: Finished difference Result 113 states and 132 transitions. [2022-11-23 13:50:52,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 13:50:52,845 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 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 [2022-11-23 13:50:52,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:50:52,846 INFO L225 Difference]: With dead ends: 113 [2022-11-23 13:50:52,847 INFO L226 Difference]: Without dead ends: 111 [2022-11-23 13:50:52,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-23 13:50:52,848 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 65 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:50:52,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 201 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:50:52,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-23 13:50:52,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 98. [2022-11-23 13:50:52,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 76 states have (on average 1.4473684210526316) internal successors, (110), 91 states have internal predecessors, (110), 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) [2022-11-23 13:50:52,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 118 transitions. [2022-11-23 13:50:52,859 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 118 transitions. Word has length 13 [2022-11-23 13:50:52,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:50:52,859 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 118 transitions. [2022-11-23 13:50:52,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2022-11-23 13:50:52,860 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 118 transitions. [2022-11-23 13:50:52,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-23 13:50:52,860 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:50:52,861 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:50:52,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 13:50:52,861 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 13:50:52,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:50:52,862 INFO L85 PathProgramCache]: Analyzing trace with hash 997606317, now seen corresponding path program 1 times [2022-11-23 13:50:52,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:50:52,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507545189] [2022-11-23 13:50:52,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:50:52,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:50:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:50:52,889 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 13:50:52,889 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:50:52,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507545189] [2022-11-23 13:50:52,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507545189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:50:52,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:50:52,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 13:50:52,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468224406] [2022-11-23 13:50:52,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:50:52,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:50:52,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:50:52,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:50:52,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:50:52,891 INFO L87 Difference]: Start difference. First operand 98 states and 118 transitions. Second operand has 3 states, 2 states have (on average 6.0) 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) [2022-11-23 13:50:52,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:50:52,936 INFO L93 Difference]: Finished difference Result 102 states and 124 transitions. [2022-11-23 13:50:52,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:50:52,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) 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 15 [2022-11-23 13:50:52,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:50:52,938 INFO L225 Difference]: With dead ends: 102 [2022-11-23 13:50:52,938 INFO L226 Difference]: Without dead ends: 101 [2022-11-23 13:50:52,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:50:52,939 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 2 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 13:50:52,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 112 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 13:50:52,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-23 13:50:52,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 95. [2022-11-23 13:50:52,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 74 states have (on average 1.4324324324324325) internal successors, (106), 88 states have internal predecessors, (106), 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) [2022-11-23 13:50:52,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 114 transitions. [2022-11-23 13:50:52,948 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 114 transitions. Word has length 15 [2022-11-23 13:50:52,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:50:52,949 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 114 transitions. [2022-11-23 13:50:52,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) 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) [2022-11-23 13:50:52,949 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 114 transitions. [2022-11-23 13:50:52,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-23 13:50:52,950 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:50:52,950 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:50:52,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 13:50:52,951 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 13:50:52,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:50:52,951 INFO L85 PathProgramCache]: Analyzing trace with hash 997914445, now seen corresponding path program 1 times [2022-11-23 13:50:52,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:50:52,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270779972] [2022-11-23 13:50:52,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:50:52,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:50:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:50:53,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:50:53,044 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:50:53,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270779972] [2022-11-23 13:50:53,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270779972] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:50:53,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532690876] [2022-11-23 13:50:53,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:50:53,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:50:53,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:50:53,051 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:50:53,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 13:50:53,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:50:53,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 13:50:53,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:50:53,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:50:53,224 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:50:53,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532690876] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:50:53,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 13:50:53,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-23 13:50:53,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779507920] [2022-11-23 13:50:53,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:50:53,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:50:53,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:50:53,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:50:53,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 13:50:53,226 INFO L87 Difference]: Start difference. First operand 95 states and 114 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-11-23 13:50:53,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:50:53,285 INFO L93 Difference]: Finished difference Result 110 states and 136 transitions. [2022-11-23 13:50:53,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 13:50:53,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 15 [2022-11-23 13:50:53,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:50:53,286 INFO L225 Difference]: With dead ends: 110 [2022-11-23 13:50:53,286 INFO L226 Difference]: Without dead ends: 109 [2022-11-23 13:50:53,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 13:50:53,288 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 8 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 13:50:53,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 121 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 13:50:53,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-11-23 13:50:53,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 97. [2022-11-23 13:50:53,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 76 states have (on average 1.4342105263157894) internal successors, (109), 90 states have internal predecessors, (109), 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) [2022-11-23 13:50:53,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 117 transitions. [2022-11-23 13:50:53,297 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 117 transitions. Word has length 15 [2022-11-23 13:50:53,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:50:53,297 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 117 transitions. [2022-11-23 13:50:53,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-11-23 13:50:53,298 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 117 transitions. [2022-11-23 13:50:53,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 13:50:53,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:50:53,299 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:50:53,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 13:50:53,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-23 13:50:53,505 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 13:50:53,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:50:53,506 INFO L85 PathProgramCache]: Analyzing trace with hash 674516324, now seen corresponding path program 1 times [2022-11-23 13:50:53,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:50:53,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470973954] [2022-11-23 13:50:53,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:50:53,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:50:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:50:53,569 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 13:50:53,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:50:53,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470973954] [2022-11-23 13:50:53,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470973954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:50:53,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:50:53,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:50:53,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822874677] [2022-11-23 13:50:53,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:50:53,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:50:53,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:50:53,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:50:53,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 13:50:53,571 INFO L87 Difference]: Start difference. First operand 97 states and 117 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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) [2022-11-23 13:50:53,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:50:53,628 INFO L93 Difference]: Finished difference Result 114 states and 140 transitions. [2022-11-23 13:50:53,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 13:50:53,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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 17 [2022-11-23 13:50:53,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:50:53,630 INFO L225 Difference]: With dead ends: 114 [2022-11-23 13:50:53,630 INFO L226 Difference]: Without dead ends: 112 [2022-11-23 13:50:53,630 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 [2022-11-23 13:50:53,631 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 11 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 13:50:53,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 112 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 13:50:53,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-23 13:50:53,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 95. [2022-11-23 13:50:53,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 75 states have (on average 1.4) internal successors, (105), 88 states have internal predecessors, (105), 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) [2022-11-23 13:50:53,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 113 transitions. [2022-11-23 13:50:53,639 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 113 transitions. Word has length 17 [2022-11-23 13:50:53,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:50:53,639 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 113 transitions. [2022-11-23 13:50:53,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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) [2022-11-23 13:50:53,640 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 113 transitions. [2022-11-23 13:50:53,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-23 13:50:53,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:50:53,641 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:50:53,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 13:50:53,641 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 13:50:53,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:50:53,641 INFO L85 PathProgramCache]: Analyzing trace with hash 715979031, now seen corresponding path program 1 times [2022-11-23 13:50:53,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:50:53,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551522563] [2022-11-23 13:50:53,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:50:53,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:50:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:50:53,692 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 13:50:53,693 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:50:53,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551522563] [2022-11-23 13:50:53,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551522563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:50:53,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:50:53,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 13:50:53,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104946089] [2022-11-23 13:50:53,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:50:53,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 13:50:53,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:50:53,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 13:50:53,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:50:53,695 INFO L87 Difference]: Start difference. First operand 95 states and 113 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-11-23 13:50:53,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:50:53,828 INFO L93 Difference]: Finished difference Result 136 states and 164 transitions. [2022-11-23 13:50:53,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 13:50:53,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 21 [2022-11-23 13:50:53,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:50:53,829 INFO L225 Difference]: With dead ends: 136 [2022-11-23 13:50:53,829 INFO L226 Difference]: Without dead ends: 134 [2022-11-23 13:50:53,830 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 [2022-11-23 13:50:53,830 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 81 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:50:53,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 156 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:50:53,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-23 13:50:53,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 118. [2022-11-23 13:50:53,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 97 states have (on average 1.402061855670103) internal successors, (136), 110 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) [2022-11-23 13:50:53,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 144 transitions. [2022-11-23 13:50:53,841 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 144 transitions. Word has length 21 [2022-11-23 13:50:53,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:50:53,841 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 144 transitions. [2022-11-23 13:50:53,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-11-23 13:50:53,842 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 144 transitions. [2022-11-23 13:50:53,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-23 13:50:53,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:50:53,843 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:50:53,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 13:50:53,843 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 13:50:53,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:50:53,844 INFO L85 PathProgramCache]: Analyzing trace with hash 687351675, now seen corresponding path program 1 times [2022-11-23 13:50:53,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:50:53,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2302913] [2022-11-23 13:50:53,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:50:53,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:50:53,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:50:53,888 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 13:50:53,888 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:50:53,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2302913] [2022-11-23 13:50:53,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2302913] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:50:53,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:50:53,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 13:50:53,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159105877] [2022-11-23 13:50:53,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:50:53,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 13:50:53,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:50:53,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 13:50:53,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:50:53,890 INFO L87 Difference]: Start difference. First operand 118 states and 144 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-11-23 13:50:53,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:50:53,998 INFO L93 Difference]: Finished difference Result 130 states and 156 transitions. [2022-11-23 13:50:53,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 13:50:53,999 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 21 [2022-11-23 13:50:53,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:50:54,000 INFO L225 Difference]: With dead ends: 130 [2022-11-23 13:50:54,000 INFO L226 Difference]: Without dead ends: 128 [2022-11-23 13:50:54,000 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 [2022-11-23 13:50:54,001 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 80 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:50:54,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 158 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:50:54,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-11-23 13:50:54,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 113. [2022-11-23 13:50:54,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 92 states have (on average 1.391304347826087) internal successors, (128), 105 states have internal predecessors, (128), 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) [2022-11-23 13:50:54,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 136 transitions. [2022-11-23 13:50:54,017 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 136 transitions. Word has length 21 [2022-11-23 13:50:54,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:50:54,019 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 136 transitions. [2022-11-23 13:50:54,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-11-23 13:50:54,019 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 136 transitions. [2022-11-23 13:50:54,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-23 13:50:54,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:50:54,024 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:50:54,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 13:50:54,024 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 13:50:54,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:50:54,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1882782997, now seen corresponding path program 1 times [2022-11-23 13:50:54,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:50:54,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217165553] [2022-11-23 13:50:54,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:50:54,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:50:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:50:54,159 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-23 13:50:54,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:50:54,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217165553] [2022-11-23 13:50:54,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217165553] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:50:54,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044668020] [2022-11-23 13:50:54,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:50:54,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:50:54,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:50:54,161 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:50:54,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 13:50:54,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:50:54,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-23 13:50:54,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:50:54,363 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 13:50:54,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:50:54,715 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 13:50:54,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044668020] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-23 13:50:54,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-23 13:50:54,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 10] total 16 [2022-11-23 13:50:54,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555430374] [2022-11-23 13:50:54,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:50:54,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 13:50:54,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:50:54,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 13:50:54,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-23 13:50:54,718 INFO L87 Difference]: Start difference. First operand 113 states and 136 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 13:50:54,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:50:54,838 INFO L93 Difference]: Finished difference Result 149 states and 173 transitions. [2022-11-23 13:50:54,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 13:50:54,838 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 27 [2022-11-23 13:50:54,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:50:54,840 INFO L225 Difference]: With dead ends: 149 [2022-11-23 13:50:54,840 INFO L226 Difference]: Without dead ends: 117 [2022-11-23 13:50:54,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2022-11-23 13:50:54,841 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 1 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:50:54,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 289 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:50:54,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-23 13:50:54,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 113. [2022-11-23 13:50:54,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 92 states have (on average 1.3695652173913044) internal successors, (126), 105 states have internal predecessors, (126), 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) [2022-11-23 13:50:54,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 134 transitions. [2022-11-23 13:50:54,851 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 134 transitions. Word has length 27 [2022-11-23 13:50:54,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:50:54,851 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 134 transitions. [2022-11-23 13:50:54,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 13:50:54,851 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 134 transitions. [2022-11-23 13:50:54,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-23 13:50:54,852 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:50:54,852 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:50:54,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 13:50:55,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:50:55,059 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 13:50:55,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:50:55,059 INFO L85 PathProgramCache]: Analyzing trace with hash -2079999658, now seen corresponding path program 1 times [2022-11-23 13:50:55,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:50:55,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960092408] [2022-11-23 13:50:55,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:50:55,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:50:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:50:55,119 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 13:50:55,119 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:50:55,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960092408] [2022-11-23 13:50:55,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960092408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:50:55,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:50:55,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 13:50:55,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408601279] [2022-11-23 13:50:55,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:50:55,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 13:50:55,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:50:55,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 13:50:55,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:50:55,121 INFO L87 Difference]: Start difference. First operand 113 states and 134 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-23 13:50:55,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:50:55,213 INFO L93 Difference]: Finished difference Result 125 states and 148 transitions. [2022-11-23 13:50:55,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 13:50:55,213 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2022-11-23 13:50:55,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:50:55,214 INFO L225 Difference]: With dead ends: 125 [2022-11-23 13:50:55,214 INFO L226 Difference]: Without dead ends: 123 [2022-11-23 13:50:55,215 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 [2022-11-23 13:50:55,215 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 78 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:50:55,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 149 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:50:55,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-23 13:50:55,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 109. [2022-11-23 13:50:55,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 90 states have (on average 1.3444444444444446) internal successors, (121), 101 states have internal predecessors, (121), 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) [2022-11-23 13:50:55,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 129 transitions. [2022-11-23 13:50:55,225 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 129 transitions. Word has length 27 [2022-11-23 13:50:55,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:50:55,225 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 129 transitions. [2022-11-23 13:50:55,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-23 13:50:55,226 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 129 transitions. [2022-11-23 13:50:55,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-23 13:50:55,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:50:55,227 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:50:55,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 13:50:55,227 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 13:50:55,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:50:55,228 INFO L85 PathProgramCache]: Analyzing trace with hash -2108627014, now seen corresponding path program 1 times [2022-11-23 13:50:55,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:50:55,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524175656] [2022-11-23 13:50:55,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:50:55,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:50:55,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:50:55,268 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 13:50:55,268 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:50:55,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524175656] [2022-11-23 13:50:55,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524175656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:50:55,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:50:55,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 13:50:55,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024677851] [2022-11-23 13:50:55,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:50:55,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 13:50:55,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:50:55,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 13:50:55,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:50:55,270 INFO L87 Difference]: Start difference. First operand 109 states and 129 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-23 13:50:55,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:50:55,358 INFO L93 Difference]: Finished difference Result 119 states and 141 transitions. [2022-11-23 13:50:55,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 13:50:55,359 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2022-11-23 13:50:55,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:50:55,360 INFO L225 Difference]: With dead ends: 119 [2022-11-23 13:50:55,360 INFO L226 Difference]: Without dead ends: 117 [2022-11-23 13:50:55,360 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 [2022-11-23 13:50:55,361 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 78 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:50:55,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 149 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:50:55,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-23 13:50:55,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 102. [2022-11-23 13:50:55,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 85 states have (on average 1.3294117647058823) internal successors, (113), 94 states have internal predecessors, (113), 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) [2022-11-23 13:50:55,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 121 transitions. [2022-11-23 13:50:55,371 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 121 transitions. Word has length 27 [2022-11-23 13:50:55,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:50:55,371 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 121 transitions. [2022-11-23 13:50:55,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-23 13:50:55,372 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 121 transitions. [2022-11-23 13:50:55,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-23 13:50:55,372 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:50:55,372 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:50:55,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 13:50:55,373 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 13:50:55,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:50:55,373 INFO L85 PathProgramCache]: Analyzing trace with hash 937330458, now seen corresponding path program 1 times [2022-11-23 13:50:55,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:50:55,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138745251] [2022-11-23 13:50:55,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:50:55,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:50:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:50:55,475 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-23 13:50:55,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:50:55,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138745251] [2022-11-23 13:50:55,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138745251] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:50:55,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893533384] [2022-11-23 13:50:55,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:50:55,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:50:55,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:50:55,477 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:50:55,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 13:50:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:50:55,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-23 13:50:55,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:50:55,691 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 13:50:55,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:50:55,908 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 13:50:55,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893533384] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:50:55,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1325063690] [2022-11-23 13:50:55,928 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-11-23 13:50:55,929 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:50:55,932 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:50:55,938 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:50:55,940 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:50:56,114 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 58 for LOIs [2022-11-23 13:50:56,203 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:50:57,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1325063690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:50:57,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 13:50:57,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 9, 7] total 23 [2022-11-23 13:50:57,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750573750] [2022-11-23 13:50:57,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:50:57,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 13:50:57,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:50:57,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 13:50:57,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2022-11-23 13:50:57,376 INFO L87 Difference]: Start difference. First operand 102 states and 121 transitions. Second operand has 10 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-23 13:50:57,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:50:57,625 INFO L93 Difference]: Finished difference Result 232 states and 274 transitions. [2022-11-23 13:50:57,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 13:50:57,626 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 31 [2022-11-23 13:50:57,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:50:57,627 INFO L225 Difference]: With dead ends: 232 [2022-11-23 13:50:57,627 INFO L226 Difference]: Without dead ends: 132 [2022-11-23 13:50:57,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2022-11-23 13:50:57,629 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 122 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:50:57,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 196 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 13:50:57,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-11-23 13:50:57,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 96. [2022-11-23 13:50:57,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 78 states have (on average 1.3076923076923077) internal successors, (102), 88 states have internal predecessors, (102), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-23 13:50:57,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2022-11-23 13:50:57,651 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 31 [2022-11-23 13:50:57,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:50:57,653 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2022-11-23 13:50:57,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-23 13:50:57,654 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2022-11-23 13:50:57,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-23 13:50:57,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:50:57,656 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:50:57,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 13:50:57,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-23 13:50:57,862 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 13:50:57,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:50:57,863 INFO L85 PathProgramCache]: Analyzing trace with hash 982834882, now seen corresponding path program 1 times [2022-11-23 13:50:57,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:50:57,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001785949] [2022-11-23 13:50:57,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:50:57,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:50:57,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:50:58,060 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-23 13:50:58,060 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:50:58,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001785949] [2022-11-23 13:50:58,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001785949] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:50:58,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946974082] [2022-11-23 13:50:58,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:50:58,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:50:58,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:50:58,063 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:50:58,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 13:50:58,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:50:58,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-23 13:50:58,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:50:58,255 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 13:50:58,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:50:58,413 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-23 13:50:58,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946974082] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:50:58,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [521940159] [2022-11-23 13:50:58,416 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2022-11-23 13:50:58,417 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:50:58,417 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:50:58,417 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:50:58,417 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:50:58,727 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-23 13:50:58,858 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:51:02,450 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4579#(and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (or (< |ULTIMATE.start_mulflt_~a#1| 0) (<= |ULTIMATE.start_mulflt_~ma~1#1| 16777215)) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (or (and (= |ULTIMATE.start_main_~sa~0#1| |ULTIMATE.start_main_~tmp~2#1|) (not (< (mod |ULTIMATE.start_main_~a~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296))) (or (and (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~a~0#1| 4294967296)) (= |ULTIMATE.start_main_~tmp~2#1| 1)) (and (not (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~a~0#1| 4294967296))) (= 0 |ULTIMATE.start_main_~tmp~2#1|)))) (and (= (+ |ULTIMATE.start_main_~sa~0#1| 1) 0) (< (mod |ULTIMATE.start_main_~a~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296)))) (= (select |#valid| 1) 1) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (<= 0 |ULTIMATE.start_mulflt_~ma~1#1|) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (or (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~b#1|) (not (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_mulflt_~a#1|)) (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~a#1|) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_~b#1|) (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296)) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_#in~a#1|))) (= (select (select |#memory_int| 1) 0) 48) (not (= (mod |ULTIMATE.start_mulflt_~b#1| 4294967296) 0)) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select (select |#memory_int| 1) 1) 0) (not (<= 0 (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) 2147483520))) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 13:51:02,450 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 13:51:02,450 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 13:51:02,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 7] total 16 [2022-11-23 13:51:02,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16918220] [2022-11-23 13:51:02,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 13:51:02,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-23 13:51:02,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:51:02,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-23 13:51:02,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=856, Unknown=0, NotChecked=0, Total=992 [2022-11-23 13:51:02,452 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand has 16 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 4 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-23 13:51:02,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:51:02,952 INFO L93 Difference]: Finished difference Result 257 states and 297 transitions. [2022-11-23 13:51:02,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-23 13:51:02,953 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 4 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 40 [2022-11-23 13:51:02,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:51:02,954 INFO L225 Difference]: With dead ends: 257 [2022-11-23 13:51:02,954 INFO L226 Difference]: Without dead ends: 146 [2022-11-23 13:51:02,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 92 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=230, Invalid=1492, Unknown=0, NotChecked=0, Total=1722 [2022-11-23 13:51:02,956 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 67 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 13:51:02,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 480 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 13:51:02,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-11-23 13:51:02,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 98. [2022-11-23 13:51:02,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 80 states have (on average 1.2625) internal successors, (101), 89 states have internal predecessors, (101), 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) [2022-11-23 13:51:02,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2022-11-23 13:51:02,969 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 40 [2022-11-23 13:51:02,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:51:02,969 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2022-11-23 13:51:02,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 4 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-23 13:51:02,970 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2022-11-23 13:51:02,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-23 13:51:02,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:51:02,970 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:51:02,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 13:51:03,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-23 13:51:03,176 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 13:51:03,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:51:03,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1095967899, now seen corresponding path program 1 times [2022-11-23 13:51:03,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:51:03,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877091879] [2022-11-23 13:51:03,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:51:03,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:51:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:51:03,274 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-23 13:51:03,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:51:03,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877091879] [2022-11-23 13:51:03,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877091879] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:51:03,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390594311] [2022-11-23 13:51:03,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:51:03,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:51:03,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:51:03,276 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:51:03,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 13:51:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:51:03,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 13:51:03,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:51:03,427 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 13:51:03,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:51:03,571 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-23 13:51:03,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390594311] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:51:03,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1077543113] [2022-11-23 13:51:03,574 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2022-11-23 13:51:03,574 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:51:03,575 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:51:03,575 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:51:03,575 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:51:03,882 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-23 13:51:03,981 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:51:05,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1077543113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:51:05,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 13:51:05,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [6, 6, 6] total 34 [2022-11-23 13:51:05,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388900069] [2022-11-23 13:51:05,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:51:05,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-23 13:51:05,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:51:05,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-23 13:51:05,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=930, Unknown=0, NotChecked=0, Total=1122 [2022-11-23 13:51:05,973 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand has 22 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 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) [2022-11-23 13:51:07,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:51:07,082 INFO L93 Difference]: Finished difference Result 230 states and 254 transitions. [2022-11-23 13:51:07,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-23 13:51:07,083 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 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) Word has length 48 [2022-11-23 13:51:07,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:51:07,089 INFO L225 Difference]: With dead ends: 230 [2022-11-23 13:51:07,089 INFO L226 Difference]: Without dead ends: 228 [2022-11-23 13:51:07,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=306, Invalid=1416, Unknown=0, NotChecked=0, Total=1722 [2022-11-23 13:51:07,091 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 254 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 13:51:07,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 485 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 13:51:07,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-11-23 13:51:07,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 119. [2022-11-23 13:51:07,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 96 states have (on average 1.2604166666666667) internal successors, (121), 107 states have internal predecessors, (121), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-23 13:51:07,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2022-11-23 13:51:07,109 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 48 [2022-11-23 13:51:07,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:51:07,110 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2022-11-23 13:51:07,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 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) [2022-11-23 13:51:07,110 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2022-11-23 13:51:07,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-23 13:51:07,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:51:07,111 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:51:07,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 13:51:07,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-23 13:51:07,314 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 13:51:07,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:51:07,315 INFO L85 PathProgramCache]: Analyzing trace with hash 2114517217, now seen corresponding path program 1 times [2022-11-23 13:51:07,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:51:07,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161981788] [2022-11-23 13:51:07,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:51:07,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:51:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:51:07,531 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-23 13:51:07,531 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:51:07,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161981788] [2022-11-23 13:51:07,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161981788] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:51:07,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64051762] [2022-11-23 13:51:07,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:51:07,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:51:07,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:51:07,535 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:51:07,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 13:51:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:51:07,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 13:51:07,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:51:07,696 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 13:51:07,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:51:07,819 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-23 13:51:07,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64051762] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:51:07,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1704616837] [2022-11-23 13:51:07,822 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2022-11-23 13:51:07,823 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:51:07,823 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:51:07,823 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:51:07,824 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:51:08,193 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-23 13:51:08,408 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:51:10,581 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6106#(and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (or (< |ULTIMATE.start_mulflt_~a#1| 0) (<= |ULTIMATE.start_mulflt_~ma~1#1| 16777215)) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (or (and (= |ULTIMATE.start_main_~sa~0#1| |ULTIMATE.start_main_~tmp~2#1|) (not (< (mod |ULTIMATE.start_main_~a~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296))) (or (and (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~a~0#1| 4294967296)) (= |ULTIMATE.start_main_~tmp~2#1| 1)) (and (not (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~a~0#1| 4294967296))) (= 0 |ULTIMATE.start_main_~tmp~2#1|)))) (and (= (+ |ULTIMATE.start_main_~sa~0#1| 1) 0) (< (mod |ULTIMATE.start_main_~a~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296)))) (= (select |#valid| 1) 1) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (<= 0 |ULTIMATE.start_mulflt_~ma~1#1|) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (or (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~b#1|) (not (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_mulflt_~a#1|)) (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~a#1|) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_~b#1|) (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296)) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_#in~a#1|))) (= (select (select |#memory_int| 1) 0) 48) (not (= (mod |ULTIMATE.start_mulflt_~b#1| 4294967296) 0)) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select (select |#memory_int| 1) 1) 0) (not (<= 0 (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) 2147483520))) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 13:51:10,581 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 13:51:10,581 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 13:51:10,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-11-23 13:51:10,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15259859] [2022-11-23 13:51:10,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 13:51:10,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 13:51:10,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:51:10,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 13:51:10,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2022-11-23 13:51:10,585 INFO L87 Difference]: Start difference. First operand 119 states and 138 transitions. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 13:51:11,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:51:11,127 INFO L93 Difference]: Finished difference Result 311 states and 363 transitions. [2022-11-23 13:51:11,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 13:51:11,129 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 49 [2022-11-23 13:51:11,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:51:11,131 INFO L225 Difference]: With dead ends: 311 [2022-11-23 13:51:11,131 INFO L226 Difference]: Without dead ends: 221 [2022-11-23 13:51:11,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=222, Invalid=834, Unknown=0, NotChecked=0, Total=1056 [2022-11-23 13:51:11,132 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 139 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:51:11,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 204 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 13:51:11,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-11-23 13:51:11,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 137. [2022-11-23 13:51:11,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 114 states have (on average 1.2456140350877194) internal successors, (142), 125 states have internal predecessors, (142), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-23 13:51:11,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 159 transitions. [2022-11-23 13:51:11,164 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 159 transitions. Word has length 49 [2022-11-23 13:51:11,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:51:11,164 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 159 transitions. [2022-11-23 13:51:11,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 13:51:11,165 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 159 transitions. [2022-11-23 13:51:11,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-23 13:51:11,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:51:11,166 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:51:11,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 13:51:11,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:51:11,371 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 13:51:11,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:51:11,371 INFO L85 PathProgramCache]: Analyzing trace with hash 317977360, now seen corresponding path program 1 times [2022-11-23 13:51:11,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:51:11,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658184465] [2022-11-23 13:51:11,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:51:11,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:51:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:51:11,468 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 13:51:11,468 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:51:11,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658184465] [2022-11-23 13:51:11,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658184465] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:51:11,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613387654] [2022-11-23 13:51:11,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:51:11,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:51:11,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:51:11,470 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:51:11,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 13:51:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:51:11,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 13:51:11,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:51:11,625 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 13:51:11,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:51:11,764 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 13:51:11,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613387654] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:51:11,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1200292208] [2022-11-23 13:51:11,767 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2022-11-23 13:51:11,767 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:51:11,768 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:51:11,768 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:51:11,768 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:51:12,034 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-23 13:51:12,200 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:51:15,318 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6999#(and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (or (< |ULTIMATE.start_mulflt_~a#1| 0) (<= |ULTIMATE.start_mulflt_~ma~1#1| 16777215)) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (or (and (= |ULTIMATE.start_main_~sa~0#1| |ULTIMATE.start_main_~tmp~2#1|) (not (< (mod |ULTIMATE.start_main_~a~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296))) (or (and (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~a~0#1| 4294967296)) (= |ULTIMATE.start_main_~tmp~2#1| 1)) (and (not (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~a~0#1| 4294967296))) (= 0 |ULTIMATE.start_main_~tmp~2#1|)))) (and (= (+ |ULTIMATE.start_main_~sa~0#1| 1) 0) (< (mod |ULTIMATE.start_main_~a~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296)))) (= (select |#valid| 1) 1) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (<= 0 |ULTIMATE.start_mulflt_~ma~1#1|) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (or (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~b#1|) (not (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_mulflt_~a#1|)) (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~a#1|) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_~b#1|) (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296)) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_#in~a#1|))) (= (select (select |#memory_int| 1) 0) 48) (not (= (mod |ULTIMATE.start_mulflt_~b#1| 4294967296) 0)) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select (select |#memory_int| 1) 1) 0) (not (<= 0 (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) 2147483520))) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 13:51:15,318 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 13:51:15,318 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 13:51:15,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2022-11-23 13:51:15,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117772938] [2022-11-23 13:51:15,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 13:51:15,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 13:51:15,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:51:15,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 13:51:15,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=671, Unknown=0, NotChecked=0, Total=870 [2022-11-23 13:51:15,321 INFO L87 Difference]: Start difference. First operand 137 states and 159 transitions. Second operand has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 14 states have internal predecessors, (78), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 13:51:15,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:51:15,649 INFO L93 Difference]: Finished difference Result 358 states and 419 transitions. [2022-11-23 13:51:15,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 13:51:15,650 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 14 states have internal predecessors, (78), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 50 [2022-11-23 13:51:15,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:51:15,651 INFO L225 Difference]: With dead ends: 358 [2022-11-23 13:51:15,651 INFO L226 Difference]: Without dead ends: 267 [2022-11-23 13:51:15,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=240, Invalid=816, Unknown=0, NotChecked=0, Total=1056 [2022-11-23 13:51:15,653 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 172 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:51:15,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 209 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 13:51:15,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-11-23 13:51:15,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 139. [2022-11-23 13:51:15,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 116 states have (on average 1.2155172413793103) internal successors, (141), 127 states have internal predecessors, (141), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-23 13:51:15,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 158 transitions. [2022-11-23 13:51:15,693 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 158 transitions. Word has length 50 [2022-11-23 13:51:15,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:51:15,695 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 158 transitions. [2022-11-23 13:51:15,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 14 states have internal predecessors, (78), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 13:51:15,695 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 158 transitions. [2022-11-23 13:51:15,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-23 13:51:15,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:51:15,698 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:51:15,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-23 13:51:15,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-23 13:51:15,903 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 13:51:15,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:51:15,904 INFO L85 PathProgramCache]: Analyzing trace with hash 322534625, now seen corresponding path program 2 times [2022-11-23 13:51:15,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:51:15,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383475358] [2022-11-23 13:51:15,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:51:15,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:51:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:51:16,221 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 3 proven. 83 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-23 13:51:16,221 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:51:16,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383475358] [2022-11-23 13:51:16,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383475358] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:51:16,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712375204] [2022-11-23 13:51:16,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 13:51:16,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:51:16,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:51:16,223 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:51:16,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 13:51:16,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-23 13:51:16,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 13:51:16,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-23 13:51:16,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:51:16,587 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-23 13:51:16,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:51:16,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712375204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:51:16,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 13:51:16,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 15 [2022-11-23 13:51:16,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369940741] [2022-11-23 13:51:16,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:51:16,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 13:51:16,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:51:16,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 13:51:16,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-23 13:51:16,589 INFO L87 Difference]: Start difference. First operand 139 states and 158 transitions. Second operand has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 13:51:16,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:51:16,721 INFO L93 Difference]: Finished difference Result 173 states and 194 transitions. [2022-11-23 13:51:16,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 13:51:16,721 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 69 [2022-11-23 13:51:16,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:51:16,722 INFO L225 Difference]: With dead ends: 173 [2022-11-23 13:51:16,723 INFO L226 Difference]: Without dead ends: 172 [2022-11-23 13:51:16,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-23 13:51:16,723 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 56 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:51:16,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 260 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:51:16,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-11-23 13:51:16,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 144. [2022-11-23 13:51:16,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 120 states have (on average 1.2083333333333333) internal successors, (145), 131 states have internal predecessors, (145), 6 states have call successors, (6), 4 states have call predecessors, (6), 8 states have return successors, (13), 8 states have call predecessors, (13), 6 states have call successors, (13) [2022-11-23 13:51:16,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 164 transitions. [2022-11-23 13:51:16,747 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 164 transitions. Word has length 69 [2022-11-23 13:51:16,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:51:16,748 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 164 transitions. [2022-11-23 13:51:16,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 13:51:16,748 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 164 transitions. [2022-11-23 13:51:16,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-23 13:51:16,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:51:16,749 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 4, 4, 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] [2022-11-23 13:51:16,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-23 13:51:16,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-23 13:51:16,954 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 13:51:16,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:51:16,954 INFO L85 PathProgramCache]: Analyzing trace with hash 601091856, now seen corresponding path program 2 times [2022-11-23 13:51:16,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:51:16,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627249198] [2022-11-23 13:51:16,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:51:16,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:51:16,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:51:17,163 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 3 proven. 95 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 13:51:17,163 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:51:17,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627249198] [2022-11-23 13:51:17,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627249198] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:51:17,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545720805] [2022-11-23 13:51:17,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 13:51:17,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:51:17,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:51:17,171 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:51:17,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 13:51:17,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-23 13:51:17,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 13:51:17,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 13:51:17,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:51:17,416 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-23 13:51:17,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:51:18,286 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-23 13:51:18,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545720805] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:51:18,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [441570768] [2022-11-23 13:51:18,288 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2022-11-23 13:51:18,288 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:51:18,289 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:51:18,289 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:51:18,289 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:51:18,554 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-23 13:51:18,719 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:51:22,210 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8686#(and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (or (< |ULTIMATE.start_mulflt_~a#1| 0) (<= |ULTIMATE.start_mulflt_~ma~1#1| 16777215)) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (or (and (= |ULTIMATE.start_main_~sa~0#1| |ULTIMATE.start_main_~tmp~2#1|) (not (< (mod |ULTIMATE.start_main_~a~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296))) (or (and (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~a~0#1| 4294967296)) (= |ULTIMATE.start_main_~tmp~2#1| 1)) (and (not (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~a~0#1| 4294967296))) (= 0 |ULTIMATE.start_main_~tmp~2#1|)))) (and (= (+ |ULTIMATE.start_main_~sa~0#1| 1) 0) (< (mod |ULTIMATE.start_main_~a~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296)))) (= (select |#valid| 1) 1) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (<= 0 |ULTIMATE.start_mulflt_~ma~1#1|) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (or (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~b#1|) (not (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_mulflt_~a#1|)) (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~a#1|) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_~b#1|) (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296)) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_#in~a#1|))) (= (select (select |#memory_int| 1) 0) 48) (not (= (mod |ULTIMATE.start_mulflt_~b#1| 4294967296) 0)) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select (select |#memory_int| 1) 1) 0) (not (<= 0 (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) 2147483520))) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 13:51:22,210 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 13:51:22,210 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 13:51:22,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 6] total 20 [2022-11-23 13:51:22,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643943508] [2022-11-23 13:51:22,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 13:51:22,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-23 13:51:22,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:51:22,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-23 13:51:22,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1071, Unknown=0, NotChecked=0, Total=1260 [2022-11-23 13:51:22,212 INFO L87 Difference]: Start difference. First operand 144 states and 164 transitions. Second operand has 20 states, 18 states have (on average 4.166666666666667) internal successors, (75), 18 states have internal predecessors, (75), 4 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-23 13:51:22,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:51:22,879 INFO L93 Difference]: Finished difference Result 428 states and 503 transitions. [2022-11-23 13:51:22,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-23 13:51:22,880 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 4.166666666666667) internal successors, (75), 18 states have internal predecessors, (75), 4 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) Word has length 70 [2022-11-23 13:51:22,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:51:22,883 INFO L225 Difference]: With dead ends: 428 [2022-11-23 13:51:22,883 INFO L226 Difference]: Without dead ends: 334 [2022-11-23 13:51:22,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 183 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=248, Invalid=1392, Unknown=0, NotChecked=0, Total=1640 [2022-11-23 13:51:22,885 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 184 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 13:51:22,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 515 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 13:51:22,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-11-23 13:51:22,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 153. [2022-11-23 13:51:22,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 127 states have (on average 1.204724409448819) internal successors, (153), 139 states have internal predecessors, (153), 7 states have call successors, (7), 4 states have call predecessors, (7), 9 states have return successors, (18), 9 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-23 13:51:22,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 178 transitions. [2022-11-23 13:51:22,922 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 178 transitions. Word has length 70 [2022-11-23 13:51:22,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:51:22,922 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 178 transitions. [2022-11-23 13:51:22,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 4.166666666666667) internal successors, (75), 18 states have internal predecessors, (75), 4 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-23 13:51:22,923 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 178 transitions. [2022-11-23 13:51:22,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-23 13:51:22,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:51:22,924 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:51:22,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-23 13:51:23,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:51:23,131 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 13:51:23,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:51:23,131 INFO L85 PathProgramCache]: Analyzing trace with hash 718141825, now seen corresponding path program 1 times [2022-11-23 13:51:23,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:51:23,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476250908] [2022-11-23 13:51:23,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:51:23,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:51:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:51:23,463 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 3 proven. 83 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-23 13:51:23,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:51:23,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476250908] [2022-11-23 13:51:23,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476250908] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:51:23,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127325109] [2022-11-23 13:51:23,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:51:23,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:51:23,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:51:23,467 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:51:23,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 13:51:23,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:51:23,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-23 13:51:23,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:51:23,743 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-11-23 13:51:23,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:51:23,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127325109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:51:23,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 13:51:23,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 17 [2022-11-23 13:51:23,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16446265] [2022-11-23 13:51:23,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:51:23,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 13:51:23,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:51:23,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 13:51:23,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-11-23 13:51:23,745 INFO L87 Difference]: Start difference. First operand 153 states and 178 transitions. Second operand has 9 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 13:51:23,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:51:23,910 INFO L93 Difference]: Finished difference Result 211 states and 236 transitions. [2022-11-23 13:51:23,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 13:51:23,911 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 71 [2022-11-23 13:51:23,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:51:23,912 INFO L225 Difference]: With dead ends: 211 [2022-11-23 13:51:23,913 INFO L226 Difference]: Without dead ends: 210 [2022-11-23 13:51:23,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2022-11-23 13:51:23,914 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 109 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:51:23,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 370 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:51:23,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-11-23 13:51:23,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 137. [2022-11-23 13:51:23,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 116 states have (on average 1.1896551724137931) internal successors, (138), 125 states have internal predecessors, (138), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-23 13:51:23,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 151 transitions. [2022-11-23 13:51:23,940 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 151 transitions. Word has length 71 [2022-11-23 13:51:23,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:51:23,941 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 151 transitions. [2022-11-23 13:51:23,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 13:51:23,941 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 151 transitions. [2022-11-23 13:51:23,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-23 13:51:23,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:51:23,945 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:51:23,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 13:51:24,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:51:24,167 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 13:51:24,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:51:24,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1355429357, now seen corresponding path program 1 times [2022-11-23 13:51:24,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:51:24,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87380481] [2022-11-23 13:51:24,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:51:24,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:51:24,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:51:24,554 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 3 proven. 83 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-23 13:51:24,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:51:24,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87380481] [2022-11-23 13:51:24,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87380481] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:51:24,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991817022] [2022-11-23 13:51:24,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:51:24,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:51:24,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:51:24,560 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:51:24,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-23 13:51:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:51:24,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-23 13:51:24,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:51:24,934 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-11-23 13:51:24,934 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:51:24,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991817022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:51:24,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 13:51:24,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 18 [2022-11-23 13:51:24,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451354296] [2022-11-23 13:51:24,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:51:24,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 13:51:24,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:51:24,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 13:51:24,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-11-23 13:51:24,937 INFO L87 Difference]: Start difference. First operand 137 states and 151 transitions. Second operand has 10 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 13:51:25,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:51:25,222 INFO L93 Difference]: Finished difference Result 189 states and 203 transitions. [2022-11-23 13:51:25,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 13:51:25,223 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 73 [2022-11-23 13:51:25,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:51:25,224 INFO L225 Difference]: With dead ends: 189 [2022-11-23 13:51:25,224 INFO L226 Difference]: Without dead ends: 185 [2022-11-23 13:51:25,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2022-11-23 13:51:25,225 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 106 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:51:25,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 339 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 13:51:25,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-11-23 13:51:25,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 151. [2022-11-23 13:51:25,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 130 states have (on average 1.2) internal successors, (156), 139 states have internal predecessors, (156), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-23 13:51:25,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 169 transitions. [2022-11-23 13:51:25,250 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 169 transitions. Word has length 73 [2022-11-23 13:51:25,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:51:25,250 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 169 transitions. [2022-11-23 13:51:25,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 13:51:25,250 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 169 transitions. [2022-11-23 13:51:25,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-23 13:51:25,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:51:25,252 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 4, 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, 1, 1, 1] [2022-11-23 13:51:25,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-23 13:51:25,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-23 13:51:25,458 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 13:51:25,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:51:25,458 INFO L85 PathProgramCache]: Analyzing trace with hash 938156908, now seen corresponding path program 1 times [2022-11-23 13:51:25,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:51:25,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543878135] [2022-11-23 13:51:25,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:51:25,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:51:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:51:25,785 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 3 proven. 86 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 13:51:25,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:51:25,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543878135] [2022-11-23 13:51:25,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543878135] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:51:25,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865158160] [2022-11-23 13:51:25,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:51:25,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:51:25,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:51:25,788 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:51:25,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-23 13:51:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:51:26,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-23 13:51:26,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:51:26,192 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 24 proven. 75 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 13:51:26,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:51:26,569 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 3 proven. 86 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 13:51:26,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865158160] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:51:26,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [290197597] [2022-11-23 13:51:26,572 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2022-11-23 13:51:26,572 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:51:26,573 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:51:26,573 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:51:26,573 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:51:27,092 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-23 13:51:27,365 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:51:35,131 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11175#(and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 16777216 |ULTIMATE.start_mulflt_~ma~1#1|) (or (< |ULTIMATE.start_mulflt_~a#1| 0) (and (<= |ULTIMATE.start_mulflt_~ma~1#1| 33554431) (<= |ULTIMATE.start_mulflt_~ma~1#1| (+ 16777216 |ULTIMATE.start_mulflt_~a#1|)))) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (or (and (= |ULTIMATE.start_main_~sa~0#1| |ULTIMATE.start_main_~tmp~2#1|) (not (< (mod |ULTIMATE.start_main_~a~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296))) (or (and (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~a~0#1| 4294967296)) (= |ULTIMATE.start_main_~tmp~2#1| 1)) (and (not (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~a~0#1| 4294967296))) (= 0 |ULTIMATE.start_main_~tmp~2#1|)))) (and (= (+ |ULTIMATE.start_main_~sa~0#1| 1) 0) (< (mod |ULTIMATE.start_main_~a~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296)))) (<= 0 (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) 2147483520)) (or (< |ULTIMATE.start_mulflt_~b#1| 0) (<= |ULTIMATE.start_mulflt_~mb~1#1| 16777215)) (= (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) (+ |ULTIMATE.start_mulflt_~ea~1#1| 128)) (= (select |#valid| 1) 1) (not (<= 0 (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296))) 2147483520))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (or (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~b#1|) (not (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_mulflt_~a#1|)) (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~a#1|) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_~b#1|) (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296)) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_#in~a#1|))) (= (select (select |#memory_int| 1) 0) 48) (not (= (mod |ULTIMATE.start_mulflt_~b#1| 4294967296) 0)) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select (select |#memory_int| 1) 1) 0) (<= 0 |ULTIMATE.start_mulflt_~mb~1#1|) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 13:51:35,132 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 13:51:35,132 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 13:51:35,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2022-11-23 13:51:35,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573211853] [2022-11-23 13:51:35,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 13:51:35,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-23 13:51:35,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:51:35,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-23 13:51:35,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=1407, Unknown=0, NotChecked=0, Total=1722 [2022-11-23 13:51:35,134 INFO L87 Difference]: Start difference. First operand 151 states and 169 transitions. Second operand has 25 states, 25 states have (on average 5.56) internal successors, (139), 25 states have internal predecessors, (139), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 13:51:55,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:51:55,010 INFO L93 Difference]: Finished difference Result 482 states and 560 transitions. [2022-11-23 13:51:55,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-23 13:51:55,011 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.56) internal successors, (139), 25 states have internal predecessors, (139), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2022-11-23 13:51:55,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:51:55,013 INFO L225 Difference]: With dead ends: 482 [2022-11-23 13:51:55,013 INFO L226 Difference]: Without dead ends: 374 [2022-11-23 13:51:55,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 193 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1000 ImplicationChecksByTransitivity, 27.2s TimeCoverageRelationStatistics Valid=650, Invalid=2316, Unknown=4, NotChecked=0, Total=2970 [2022-11-23 13:51:55,015 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 252 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 13:51:55,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 596 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 13:51:55,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-11-23 13:51:55,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 184. [2022-11-23 13:51:55,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 163 states have (on average 1.1901840490797546) internal successors, (194), 172 states have internal predecessors, (194), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-23 13:51:55,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 207 transitions. [2022-11-23 13:51:55,046 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 207 transitions. Word has length 73 [2022-11-23 13:51:55,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:51:55,046 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 207 transitions. [2022-11-23 13:51:55,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.56) internal successors, (139), 25 states have internal predecessors, (139), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 13:51:55,046 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 207 transitions. [2022-11-23 13:51:55,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-23 13:51:55,047 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:51:55,047 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 4, 4, 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] [2022-11-23 13:51:55,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-23 13:51:55,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:51:55,253 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 13:51:55,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:51:55,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1383860960, now seen corresponding path program 1 times [2022-11-23 13:51:55,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:51:55,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099712581] [2022-11-23 13:51:55,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:51:55,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:51:55,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:51:55,502 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 3 proven. 127 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 13:51:55,503 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:51:55,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099712581] [2022-11-23 13:51:55,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099712581] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:51:55,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645099518] [2022-11-23 13:51:55,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:51:55,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:51:55,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:51:55,507 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:51:55,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-23 13:51:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:51:55,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 13:51:55,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:51:55,765 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 21 proven. 119 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 13:51:55,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:51:56,139 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 3 proven. 127 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 13:51:56,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645099518] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:51:56,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [706390874] [2022-11-23 13:51:56,148 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2022-11-23 13:51:56,150 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:51:56,151 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:51:56,151 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:51:56,151 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:51:56,518 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-23 13:51:56,659 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:52:05,572 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12524#(and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 16777216 |ULTIMATE.start_mulflt_~ma~1#1|) (or (< |ULTIMATE.start_mulflt_~a#1| 0) (and (<= |ULTIMATE.start_mulflt_~ma~1#1| 33554431) (<= |ULTIMATE.start_mulflt_~ma~1#1| (+ 16777216 |ULTIMATE.start_mulflt_~a#1|)))) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (or (and (= |ULTIMATE.start_main_~sa~0#1| |ULTIMATE.start_main_~tmp~2#1|) (not (< (mod |ULTIMATE.start_main_~a~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296))) (or (and (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~a~0#1| 4294967296)) (= |ULTIMATE.start_main_~tmp~2#1| 1)) (and (not (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~a~0#1| 4294967296))) (= 0 |ULTIMATE.start_main_~tmp~2#1|)))) (and (= (+ |ULTIMATE.start_main_~sa~0#1| 1) 0) (< (mod |ULTIMATE.start_main_~a~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296)))) (<= 0 (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) 2147483520)) (or (< |ULTIMATE.start_mulflt_~b#1| 0) (<= |ULTIMATE.start_mulflt_~mb~1#1| 16777215)) (= (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) (+ |ULTIMATE.start_mulflt_~ea~1#1| 128)) (= (select |#valid| 1) 1) (not (<= 0 (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296))) 2147483520))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (or (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~b#1|) (not (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_mulflt_~a#1|)) (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~a#1|) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_~b#1|) (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296)) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_#in~a#1|))) (= (select (select |#memory_int| 1) 0) 48) (not (= (mod |ULTIMATE.start_mulflt_~b#1| 4294967296) 0)) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select (select |#memory_int| 1) 1) 0) (<= 0 |ULTIMATE.start_mulflt_~mb~1#1|) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 13:52:05,572 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 13:52:05,572 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 13:52:05,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-11-23 13:52:05,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542132018] [2022-11-23 13:52:05,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 13:52:05,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-23 13:52:05,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:52:05,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-23 13:52:05,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=518, Invalid=1644, Unknown=0, NotChecked=0, Total=2162 [2022-11-23 13:52:05,575 INFO L87 Difference]: Start difference. First operand 184 states and 207 transitions. Second operand has 29 states, 29 states have (on average 5.344827586206897) internal successors, (155), 29 states have internal predecessors, (155), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 13:52:06,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:52:06,138 INFO L93 Difference]: Finished difference Result 646 states and 740 transitions. [2022-11-23 13:52:06,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-23 13:52:06,141 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.344827586206897) internal successors, (155), 29 states have internal predecessors, (155), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 77 [2022-11-23 13:52:06,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:52:06,143 INFO L225 Difference]: With dead ends: 646 [2022-11-23 13:52:06,144 INFO L226 Difference]: Without dead ends: 544 [2022-11-23 13:52:06,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 196 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1299 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=599, Invalid=1851, Unknown=0, NotChecked=0, Total=2450 [2022-11-23 13:52:06,145 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 499 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 13:52:06,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 344 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 13:52:06,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2022-11-23 13:52:06,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 196. [2022-11-23 13:52:06,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 175 states have (on average 1.1542857142857144) internal successors, (202), 184 states have internal predecessors, (202), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-23 13:52:06,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 215 transitions. [2022-11-23 13:52:06,198 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 215 transitions. Word has length 77 [2022-11-23 13:52:06,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:52:06,198 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 215 transitions. [2022-11-23 13:52:06,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.344827586206897) internal successors, (155), 29 states have internal predecessors, (155), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 13:52:06,199 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 215 transitions. [2022-11-23 13:52:06,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-23 13:52:06,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:52:06,200 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 4, 4, 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, 1, 1, 1] [2022-11-23 13:52:06,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-23 13:52:06,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:52:06,406 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 13:52:06,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:52:06,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1773524116, now seen corresponding path program 2 times [2022-11-23 13:52:06,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:52:06,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871231764] [2022-11-23 13:52:06,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:52:06,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:52:06,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:52:07,077 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 3 proven. 466 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 13:52:07,077 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:52:07,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871231764] [2022-11-23 13:52:07,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871231764] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:52:07,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992046221] [2022-11-23 13:52:07,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 13:52:07,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:52:07,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:52:07,079 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:52:07,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-23 13:52:07,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2022-11-23 13:52:07,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 13:52:07,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-23 13:52:07,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:52:08,272 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 24 proven. 455 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 13:52:08,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:52:11,583 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 3 proven. 466 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 13:52:11,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992046221] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:52:11,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [471701109] [2022-11-23 13:52:11,585 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2022-11-23 13:52:11,585 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:52:11,585 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:52:11,586 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:52:11,586 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:52:12,023 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-23 13:52:12,236 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:52:24,824 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14318#(and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 16777216 |ULTIMATE.start_mulflt_~ma~1#1|) (or (< |ULTIMATE.start_mulflt_~a#1| 0) (and (<= |ULTIMATE.start_mulflt_~ma~1#1| 33554431) (<= |ULTIMATE.start_mulflt_~ma~1#1| (+ 16777216 |ULTIMATE.start_mulflt_~a#1|)))) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (or (and (= |ULTIMATE.start_main_~sa~0#1| |ULTIMATE.start_main_~tmp~2#1|) (not (< (mod |ULTIMATE.start_main_~a~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296))) (or (and (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~a~0#1| 4294967296)) (= |ULTIMATE.start_main_~tmp~2#1| 1)) (and (not (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~a~0#1| 4294967296))) (= 0 |ULTIMATE.start_main_~tmp~2#1|)))) (and (= (+ |ULTIMATE.start_main_~sa~0#1| 1) 0) (< (mod |ULTIMATE.start_main_~a~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296)))) (<= 0 (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) 2147483520)) (or (< |ULTIMATE.start_mulflt_~b#1| 0) (<= |ULTIMATE.start_mulflt_~mb~1#1| 16777215)) (= (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) (+ |ULTIMATE.start_mulflt_~ea~1#1| 128)) (= (select |#valid| 1) 1) (not (<= 0 (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296))) 2147483520))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (or (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~b#1|) (not (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_mulflt_~a#1|)) (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~a#1|) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_~b#1|) (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296)) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_#in~a#1|))) (= (select (select |#memory_int| 1) 0) 48) (not (= (mod |ULTIMATE.start_mulflt_~b#1| 4294967296) 0)) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select (select |#memory_int| 1) 1) 0) (<= 0 |ULTIMATE.start_mulflt_~mb~1#1|) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 13:52:24,824 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 13:52:24,824 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 13:52:24,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 51 [2022-11-23 13:52:24,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573101163] [2022-11-23 13:52:24,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 13:52:24,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-23 13:52:24,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:52:24,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-23 13:52:24,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=852, Invalid=3703, Unknown=1, NotChecked=0, Total=4556 [2022-11-23 13:52:24,828 INFO L87 Difference]: Start difference. First operand 196 states and 215 transitions. Second operand has 51 states, 51 states have (on average 5.078431372549019) internal successors, (259), 51 states have internal predecessors, (259), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 13:53:49,234 WARN L233 SmtUtils]: Spent 1.32m on a formula simplification. DAG size of input: 99 DAG size of output: 40 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:53:50,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 13:53:52,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 13:53:54,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 13:53:56,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 13:55:23,093 WARN L233 SmtUtils]: Spent 1.36m on a formula simplification. DAG size of input: 93 DAG size of output: 40 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:56:04,874 WARN L233 SmtUtils]: Spent 38.22s on a formula simplification. DAG size of input: 92 DAG size of output: 40 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:56:07,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 13:56:36,241 WARN L233 SmtUtils]: Spent 24.30s on a formula simplification. DAG size of input: 85 DAG size of output: 41 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:56:38,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 13:56:40,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 13:56:42,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 13:57:09,001 WARN L233 SmtUtils]: Spent 20.73s on a formula simplification. DAG size of input: 78 DAG size of output: 40 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:57:11,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 13:57:13,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 13:57:14,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 13:57:15,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 13:57:18,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 13:57:21,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 13:58:09,459 WARN L233 SmtUtils]: Spent 41.85s on a formula simplification. DAG size of input: 71 DAG size of output: 40 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:58:11,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 13:58:29,638 WARN L233 SmtUtils]: Spent 12.27s on a formula simplification. DAG size of input: 64 DAG size of output: 41 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:58:34,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 13:58:35,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 13:58:37,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 13:59:04,458 WARN L233 SmtUtils]: Spent 20.96s on a formula simplification. DAG size of input: 58 DAG size of output: 40 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:59:27,615 WARN L233 SmtUtils]: Spent 11.74s on a formula simplification. DAG size of input: 53 DAG size of output: 41 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:59:30,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 14:00:00,003 WARN L233 SmtUtils]: Spent 13.66s on a formula simplification. DAG size of input: 47 DAG size of output: 35 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:00:02,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 14:00:04,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 14:00:19,996 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification that was a NOOP. DAG size: 41 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:00:22,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 14:00:50,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 14:01:37,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 14:01:39,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 14:01:39,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:01:39,891 INFO L93 Difference]: Finished difference Result 755 states and 880 transitions. [2022-11-23 14:01:39,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-11-23 14:01:39,892 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 5.078431372549019) internal successors, (259), 51 states have internal predecessors, (259), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 113 [2022-11-23 14:01:39,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:01:39,895 INFO L225 Difference]: With dead ends: 755 [2022-11-23 14:01:39,895 INFO L226 Difference]: Without dead ends: 647 [2022-11-23 14:01:39,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 302 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3200 ImplicationChecksByTransitivity, 507.2s TimeCoverageRelationStatistics Valid=2406, Invalid=7445, Unknown=49, NotChecked=0, Total=9900 [2022-11-23 14:01:39,898 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 613 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 1896 mSolverCounterSat, 283 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 2194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 1896 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:01:39,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 1571 Invalid, 2194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 1896 Invalid, 15 Unknown, 0 Unchecked, 63.5s Time] [2022-11-23 14:01:39,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2022-11-23 14:01:39,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 264. [2022-11-23 14:01:39,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 243 states have (on average 1.1604938271604939) internal successors, (282), 252 states have internal predecessors, (282), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-23 14:01:39,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 295 transitions. [2022-11-23 14:01:39,950 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 295 transitions. Word has length 113 [2022-11-23 14:01:39,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:01:39,951 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 295 transitions. [2022-11-23 14:01:39,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 5.078431372549019) internal successors, (259), 51 states have internal predecessors, (259), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 14:01:39,951 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 295 transitions. [2022-11-23 14:01:39,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-23 14:01:39,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:01:39,953 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 16, 4, 4, 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] [2022-11-23 14:01:39,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-23 14:01:40,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-23 14:01:40,159 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 14:01:40,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:01:40,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1429656048, now seen corresponding path program 2 times [2022-11-23 14:01:40,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:01:40,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152675914] [2022-11-23 14:01:40,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:01:40,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:01:40,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:01:40,754 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 3 proven. 640 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 14:01:40,754 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:01:40,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152675914] [2022-11-23 14:01:40,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152675914] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:01:40,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281787104] [2022-11-23 14:01:40,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:01:40,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:01:40,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:01:40,759 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:01:40,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-23 14:01:41,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2022-11-23 14:01:41,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:01:41,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-23 14:01:41,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:01:41,566 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 21 proven. 632 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 14:01:41,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:01:42,552 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 3 proven. 640 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 14:01:42,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281787104] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:01:42,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [321392585] [2022-11-23 14:01:42,554 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2022-11-23 14:01:42,554 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:01:42,556 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:01:42,556 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:01:42,557 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:01:42,890 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-23 14:01:43,041 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:01:52,703 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16452#(and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 16777216 |ULTIMATE.start_mulflt_~ma~1#1|) (or (< |ULTIMATE.start_mulflt_~a#1| 0) (and (<= |ULTIMATE.start_mulflt_~ma~1#1| 33554431) (<= |ULTIMATE.start_mulflt_~ma~1#1| (+ 16777216 |ULTIMATE.start_mulflt_~a#1|)))) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (or (and (= |ULTIMATE.start_main_~sa~0#1| |ULTIMATE.start_main_~tmp~2#1|) (not (< (mod |ULTIMATE.start_main_~a~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296))) (or (and (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~a~0#1| 4294967296)) (= |ULTIMATE.start_main_~tmp~2#1| 1)) (and (not (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~a~0#1| 4294967296))) (= 0 |ULTIMATE.start_main_~tmp~2#1|)))) (and (= (+ |ULTIMATE.start_main_~sa~0#1| 1) 0) (< (mod |ULTIMATE.start_main_~a~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296)))) (<= 0 (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) 2147483520)) (or (< |ULTIMATE.start_mulflt_~b#1| 0) (<= |ULTIMATE.start_mulflt_~mb~1#1| 16777215)) (= (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) (+ |ULTIMATE.start_mulflt_~ea~1#1| 128)) (= (select |#valid| 1) 1) (not (<= 0 (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296))) 2147483520))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (or (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~b#1|) (not (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_mulflt_~a#1|)) (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~a#1|) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_~b#1|) (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296)) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_#in~a#1|))) (= (select (select |#memory_int| 1) 0) 48) (not (= (mod |ULTIMATE.start_mulflt_~b#1| 4294967296) 0)) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select (select |#memory_int| 1) 1) 0) (<= 0 |ULTIMATE.start_mulflt_~mb~1#1|) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:01:52,703 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:01:52,703 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:01:52,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 56 [2022-11-23 14:01:52,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842670058] [2022-11-23 14:01:52,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:01:52,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-23 14:01:52,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:01:52,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-23 14:01:52,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1454, Invalid=3948, Unknown=0, NotChecked=0, Total=5402 [2022-11-23 14:01:52,707 INFO L87 Difference]: Start difference. First operand 264 states and 295 transitions. Second operand has 56 states, 56 states have (on average 5.178571428571429) internal successors, (290), 56 states have internal predecessors, (290), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 14:01:54,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:01:54,465 INFO L93 Difference]: Finished difference Result 1111 states and 1271 transitions. [2022-11-23 14:01:54,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-23 14:01:54,474 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 5.178571428571429) internal successors, (290), 56 states have internal predecessors, (290), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 122 [2022-11-23 14:01:54,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:01:54,479 INFO L225 Difference]: With dead ends: 1111 [2022-11-23 14:01:54,480 INFO L226 Difference]: Without dead ends: 1009 [2022-11-23 14:01:54,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 313 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3189 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=1607, Invalid=4245, Unknown=0, NotChecked=0, Total=5852 [2022-11-23 14:01:54,483 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 760 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:01:54,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 454 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 14:01:54,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2022-11-23 14:01:54,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 286. [2022-11-23 14:01:54,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 265 states have (on average 1.1132075471698113) internal successors, (295), 274 states have internal predecessors, (295), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-23 14:01:54,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 308 transitions. [2022-11-23 14:01:54,562 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 308 transitions. Word has length 122 [2022-11-23 14:01:54,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:01:54,563 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 308 transitions. [2022-11-23 14:01:54,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 5.178571428571429) internal successors, (290), 56 states have internal predecessors, (290), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 14:01:54,563 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 308 transitions. [2022-11-23 14:01:54,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-23 14:01:54,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:01:54,565 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 4, 4, 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, 1, 1, 1] [2022-11-23 14:01:54,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-23 14:01:54,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-23 14:01:54,778 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 14:01:54,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:01:54,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1998370156, now seen corresponding path program 3 times [2022-11-23 14:01:54,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:01:54,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612321653] [2022-11-23 14:01:54,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:01:54,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:01:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:01:54,963 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 14:01:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:01:55,140 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 14:01:55,141 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 14:01:55,142 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2022-11-23 14:01:55,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-11-23 14:01:55,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-11-23 14:01:55,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-11-23 14:01:55,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-11-23 14:01:55,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-11-23 14:01:55,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-11-23 14:01:55,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-11-23 14:01:55,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2022-11-23 14:01:55,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2022-11-23 14:01:55,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-11-23 14:01:55,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-11-23 14:01:55,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-11-23 14:01:55,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-11-23 14:01:55,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-11-23 14:01:55,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-11-23 14:01:55,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-11-23 14:01:55,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-11-23 14:01:55,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-23 14:01:55,152 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:01:55,156 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 14:01:55,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:01:55 BoogieIcfgContainer [2022-11-23 14:01:55,259 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 14:01:55,260 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 14:01:55,260 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 14:01:55,260 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 14:01:55,261 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:50:51" (3/4) ... [2022-11-23 14:01:55,264 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 14:01:55,264 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 14:01:55,265 INFO L158 Benchmark]: Toolchain (without parser) took 665451.76ms. Allocated memory was 132.1MB in the beginning and 232.8MB in the end (delta: 100.7MB). Free memory was 101.8MB in the beginning and 80.8MB in the end (delta: 21.0MB). Peak memory consumption was 122.9MB. Max. memory is 16.1GB. [2022-11-23 14:01:55,265 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 107.0MB. Free memory is still 58.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:01:55,265 INFO L158 Benchmark]: CACSL2BoogieTranslator took 309.51ms. Allocated memory is still 132.1MB. Free memory was 101.3MB in the beginning and 87.8MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 14:01:55,266 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.16ms. Allocated memory is still 132.1MB. Free memory was 87.8MB in the beginning and 85.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:01:55,266 INFO L158 Benchmark]: Boogie Preprocessor took 51.15ms. Allocated memory is still 132.1MB. Free memory was 85.7MB in the beginning and 84.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:01:55,266 INFO L158 Benchmark]: RCFGBuilder took 1054.02ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 84.2MB in the beginning and 122.8MB in the end (delta: -38.7MB). Peak memory consumption was 44.3MB. Max. memory is 16.1GB. [2022-11-23 14:01:55,267 INFO L158 Benchmark]: TraceAbstraction took 663960.77ms. Allocated memory was 159.4MB in the beginning and 232.8MB in the end (delta: 73.4MB). Free memory was 121.9MB in the beginning and 80.8MB in the end (delta: 41.1MB). Peak memory consumption was 114.3MB. Max. memory is 16.1GB. [2022-11-23 14:01:55,267 INFO L158 Benchmark]: Witness Printer took 4.46ms. Allocated memory is still 232.8MB. Free memory is still 80.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:01:55,269 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 107.0MB. Free memory is still 58.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 309.51ms. Allocated memory is still 132.1MB. Free memory was 101.3MB in the beginning and 87.8MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.16ms. Allocated memory is still 132.1MB. Free memory was 87.8MB in the beginning and 85.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.15ms. Allocated memory is still 132.1MB. Free memory was 85.7MB in the beginning and 84.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1054.02ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 84.2MB in the beginning and 122.8MB in the end (delta: -38.7MB). Peak memory consumption was 44.3MB. Max. memory is 16.1GB. * TraceAbstraction took 663960.77ms. Allocated memory was 159.4MB in the beginning and 232.8MB in the end (delta: 73.4MB). Free memory was 121.9MB in the beginning and 80.8MB in the end (delta: 41.1MB). Peak memory consumption was 114.3MB. Max. memory is 16.1GB. * Witness Printer took 4.46ms. Allocated memory is still 232.8MB. Free memory is still 80.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 175]: 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 173, overapproximation of bitwiseAnd at line 174. 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 sa ; [L231] int tmp ; [L232] int tmp___0 ; [L233] int tmp___1 ; [L234] int __retres16 ; VAL [ea=127, eb=-128] [L238] CALL, EXPR base2flt(0, 0) VAL [unknown-#in~e-unknown=0, unknown-#in~m-unknown=0] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [e=0, m=0, unknown-#in~e-unknown=0, unknown-#in~m-unknown=0] [L29] COND TRUE ! m [L30] __retres4 = 0U VAL [__retres4=0, e=0, m=0, unknown-#in~e-unknown=0, unknown-#in~m-unknown=0] [L80] return (__retres4); [L238] RET, EXPR base2flt(0, 0) VAL [base2flt(0, 0)=0, ea=127, eb=-128] [L238] zero = base2flt(0, 0) [L239] CALL, EXPR base2flt(1, 0) VAL [unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [e=0, m=1, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L29] COND FALSE !(! m) VAL [e=0, m=1, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L35] COND TRUE m < 1U << 24U VAL [e=0, m=1, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L37] COND TRUE 1 VAL [e=0, m=1, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L39] COND FALSE !(e <= -128) VAL [e=0, m=1, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [e=-1, m=2, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L47] COND TRUE m < 1U << 24U VAL [e=-1, m=2, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L37] COND TRUE 1 VAL [e=-1, m=2, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L39] COND FALSE !(e <= -128) VAL [e=-1, m=2, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [e=-2, m=4, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L47] COND TRUE m < 1U << 24U VAL [e=-2, m=4, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L37] COND TRUE 1 VAL [e=-2, m=4, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L39] COND FALSE !(e <= -128) VAL [e=-2, m=4, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [e=-3, m=8, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L47] COND TRUE m < 1U << 24U VAL [e=-3, m=8, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L37] COND TRUE 1 VAL [e=-3, m=8, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L39] COND FALSE !(e <= -128) VAL [e=-3, m=8, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [e=-4, m=16, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L47] COND TRUE m < 1U << 24U VAL [e=-4, m=16, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L37] COND TRUE 1 VAL [e=-4, m=16, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L39] COND FALSE !(e <= -128) VAL [e=-4, m=16, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [e=-5, m=32, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L47] COND TRUE m < 1U << 24U VAL [e=-5, m=32, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L37] COND TRUE 1 VAL [e=-5, m=32, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L39] COND FALSE !(e <= -128) VAL [e=-5, m=32, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [e=-6, m=64, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L47] COND TRUE m < 1U << 24U VAL [e=-6, m=64, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L37] COND TRUE 1 VAL [e=-6, m=64, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L39] COND FALSE !(e <= -128) VAL [e=-6, m=64, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [e=-7, m=128, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L47] COND TRUE m < 1U << 24U VAL [e=-7, m=128, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L37] COND TRUE 1 VAL [e=-7, m=128, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L39] COND FALSE !(e <= -128) VAL [e=-7, m=128, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [e=-8, m=256, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L47] COND TRUE m < 1U << 24U VAL [e=-8, m=256, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L37] COND TRUE 1 VAL [e=-8, m=256, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L39] COND FALSE !(e <= -128) VAL [e=-8, m=256, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [e=-9, m=512, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L47] COND TRUE m < 1U << 24U VAL [e=-9, m=512, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L37] COND TRUE 1 VAL [e=-9, m=512, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L39] COND FALSE !(e <= -128) VAL [e=-9, m=512, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [e=-10, m=1024, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L47] COND TRUE m < 1U << 24U VAL [e=-10, m=1024, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L37] COND TRUE 1 VAL [e=-10, m=1024, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L39] COND FALSE !(e <= -128) VAL [e=-10, m=1024, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [e=-11, m=2048, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L47] COND TRUE m < 1U << 24U VAL [e=-11, m=2048, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L37] COND TRUE 1 VAL [e=-11, m=2048, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L39] COND FALSE !(e <= -128) VAL [e=-11, m=2048, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [e=-12, m=4096, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L47] COND TRUE m < 1U << 24U VAL [e=-12, m=4096, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L37] COND TRUE 1 VAL [e=-12, m=4096, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L39] COND FALSE !(e <= -128) VAL [e=-12, m=4096, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [e=-13, m=8192, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L47] COND TRUE m < 1U << 24U VAL [e=-13, m=8192, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L37] COND TRUE 1 VAL [e=-13, m=8192, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L39] COND FALSE !(e <= -128) VAL [e=-13, m=8192, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [e=-14, m=16384, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L47] COND TRUE m < 1U << 24U VAL [e=-14, m=16384, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L37] COND TRUE 1 VAL [e=-14, m=16384, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L39] COND FALSE !(e <= -128) VAL [e=-14, m=16384, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [e=-15, m=32768, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L47] COND TRUE m < 1U << 24U VAL [e=-15, m=32768, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L37] COND TRUE 1 VAL [e=-15, m=32768, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L39] COND FALSE !(e <= -128) VAL [e=-15, m=32768, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [e=-16, m=65536, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L47] COND TRUE m < 1U << 24U VAL [e=-16, m=65536, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L37] COND TRUE 1 VAL [e=-16, m=65536, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L39] COND FALSE !(e <= -128) VAL [e=-16, m=65536, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [e=-17, m=131072, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L47] COND TRUE m < 1U << 24U VAL [e=-17, m=131072, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L37] COND TRUE 1 VAL [e=-17, m=131072, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L39] COND FALSE !(e <= -128) VAL [e=-17, m=131072, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [e=-18, m=262144, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L47] COND TRUE m < 1U << 24U VAL [e=-18, m=262144, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L37] COND TRUE 1 VAL [e=-18, m=262144, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L39] COND FALSE !(e <= -128) VAL [e=-18, m=262144, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [e=-19, m=524288, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L47] COND TRUE m < 1U << 24U VAL [e=-19, m=524288, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L37] COND TRUE 1 VAL [e=-19, m=524288, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L39] COND FALSE !(e <= -128) VAL [e=-19, m=524288, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [e=-20, m=1048576, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L47] COND TRUE m < 1U << 24U VAL [e=-20, m=1048576, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L37] COND TRUE 1 VAL [e=-20, m=1048576, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L39] COND FALSE !(e <= -128) VAL [e=-20, m=1048576, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [e=-21, m=2097152, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L47] COND TRUE m < 1U << 24U VAL [e=-21, m=2097152, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L37] COND TRUE 1 VAL [e=-21, m=2097152, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L39] COND FALSE !(e <= -128) VAL [e=-21, m=2097152, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [e=-22, m=4194304, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L47] COND TRUE m < 1U << 24U VAL [e=-22, m=4194304, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L37] COND TRUE 1 VAL [e=-22, m=4194304, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L39] COND FALSE !(e <= -128) VAL [e=-22, m=4194304, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [e=-23, m=8388608, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L47] COND TRUE m < 1U << 24U VAL [e=-23, m=8388608, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L37] COND TRUE 1 VAL [e=-23, m=8388608, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L39] COND FALSE !(e <= -128) VAL [e=-23, m=8388608, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [e=-24, m=16777216, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L47] COND FALSE !(m < 1U << 24U) VAL [e=-24, m=16777216, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L76] m = m & ~ (1U << 24U) VAL [e=-24, m=0, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L77] EXPR e + 128 [L77] res = m | ((unsigned int )(e + 128) << 24U) [L78] __retres4 = res VAL [__retres4=1744830464, e=-24, m=0, res=1744830464, unknown-#in~e-unknown=0, unknown-#in~m-unknown=1] [L80] return (__retres4); [L239] RET, EXPR base2flt(1, 0) VAL [base2flt(1, 0)=1744830464, ea=127, eb=-128, zero=0] [L239] one = base2flt(1, 0) [L240] CALL, EXPR base2flt(ma, ea) VAL [unknown-#in~e-unknown=127, unknown-#in~m-unknown=33554432] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [e=127, m=33554432, unknown-#in~e-unknown=127, unknown-#in~m-unknown=33554432] [L29] COND FALSE !(! m) VAL [e=127, m=33554432, unknown-#in~e-unknown=127, unknown-#in~m-unknown=33554432] [L35] COND FALSE !(m < 1U << 24U) VAL [e=127, m=33554432, unknown-#in~e-unknown=127, unknown-#in~m-unknown=33554432] [L57] COND TRUE 1 VAL [e=127, m=33554432, unknown-#in~e-unknown=127, unknown-#in~m-unknown=33554432] [L59] COND TRUE m >= 1U << 25U VAL [e=127, m=33554432, unknown-#in~e-unknown=127, unknown-#in~m-unknown=33554432] [L64] COND TRUE e >= 127 [L65] __retres4 = 4294967295U VAL [__retres4=4294967295, e=127, m=33554432, unknown-#in~e-unknown=127, unknown-#in~m-unknown=33554432] [L80] return (__retres4); [L240] RET, EXPR base2flt(ma, ea) VAL [base2flt(ma, ea)=4294967295, ea=127, eb=-128, ma=33554432, one=1744830464, zero=0] [L240] a = base2flt(ma, ea) [L241] CALL, EXPR base2flt(mb, eb) VAL [unknown-#in~e-unknown=-128, unknown-#in~m-unknown=36028801330708480] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [e=-128, m=16777216, unknown-#in~e-unknown=-128, unknown-#in~m-unknown=36028801330708480] [L29] COND FALSE !(! m) VAL [e=-128, m=16777216, unknown-#in~e-unknown=-128, unknown-#in~m-unknown=36028801330708480] [L35] COND FALSE !(m < 1U << 24U) VAL [e=-128, m=16777216, unknown-#in~e-unknown=-128, unknown-#in~m-unknown=36028801330708480] [L57] COND TRUE 1 VAL [e=-128, m=16777216, unknown-#in~e-unknown=-128, unknown-#in~m-unknown=36028801330708480] [L59] COND FALSE !(m >= 1U << 25U) VAL [e=-128, m=16777216, unknown-#in~e-unknown=-128, unknown-#in~m-unknown=36028801330708480] [L76] m = m & ~ (1U << 24U) VAL [e=-128, m=1, unknown-#in~e-unknown=-128, unknown-#in~m-unknown=36028801330708480] [L77] EXPR e + 128 [L77] res = m | ((unsigned int )(e + 128) << 24U) [L78] __retres4 = res VAL [__retres4=1, e=-128, m=1, res=1, unknown-#in~e-unknown=-128, unknown-#in~m-unknown=36028801330708480] [L80] return (__retres4); [L241] RET, EXPR base2flt(mb, eb) VAL [a=4294967295, base2flt(mb, eb)=36028797018963969, ea=127, eb=-128, ma=33554432, mb=16777216, one=1744830464, zero=0] [L241] b = base2flt(mb, eb) [L243] COND FALSE !(a < zero) [L246] COND TRUE a > zero [L247] tmp = 1 [L251] sa = tmp [L254] CALL mulflt(a, b) [L148] unsigned int res ; [L149] unsigned int ma ; [L150] unsigned int mb ; [L151] unsigned long long accu ; [L152] int ea ; [L153] int eb ; [L154] unsigned int tmp ; [L155] unsigned int __retres10 ; [L158] COND FALSE !(a < b) VAL [a=4294967295, b=1, tmp=4294967295, unknown-#in~a-unknown=4294967295, unknown-#in~b-unknown=36028797018963969] [L165] COND FALSE !(! b) [L171] ma = a & ((1U << 24U) - 1U) VAL [a=4294967295, b=1, ma=16777215, tmp=4294967295, unknown-#in~a-unknown=4294967295, unknown-#in~b-unknown=36028797018963969] [L172] EXPR (int )(a >> 24U) - 128 [L172] ea = (int )(a >> 24U) - 128 [L173] ma = ma | (1U << 24U) [L174] mb = b & ((1U << 24U) - 1U) VAL [a=4294967295, b=1, ea=127, ma=16777216, mb=0, tmp=4294967295, unknown-#in~a-unknown=4294967295, unknown-#in~b-unknown=36028797018963969] [L175] (int )(b >> 24U) - 128 VAL [a=4294967295, b=1, ea=127, ma=16777216, mb=0, tmp=4294967295, unknown-#in~a-unknown=4294967295, unknown-#in~b-unknown=36028797018963969] - 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: 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: 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. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 71 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 663.8s, OverallIterations: 26, TraceHistogramMax: 24, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.1s, AutomataDifference: 582.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 15 mSolverCounterUnknown, 3919 SdHoareTripleChecker+Valid, 68.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3879 mSDsluCounter, 7890 SdHoareTripleChecker+Invalid, 67.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6562 mSDsCounter, 739 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6120 IncrementalHoareTripleChecker+Invalid, 6874 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 739 mSolverCounterUnsat, 1328 mSDtfsCounter, 6120 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2584 GetRequests, 1992 SyntacticMatches, 13 SemanticMatches, 579 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11243 ImplicationChecksByTransitivity, 572.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=286occurred in iteration=25, InterpolantAutomatonStates: 323, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 25 MinimizatonAttempts, 2498 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 14.0s InterpolantComputationTime, 2188 NumberOfCodeBlocks, 2087 NumberOfCodeBlocksAsserted, 77 NumberOfCheckSat, 2674 ConstructedInterpolants, 0 QuantifiedInterpolants, 11854 SizeOfPredicates, 63 NumberOfNonLiveVariables, 2325 ConjunctsInSsa, 237 ConjunctsInUnsatCore, 51 InterpolantComputations, 15 PerfectInterpolantSequences, 1368/5808 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 0.7s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 4, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 43, DAG_INTERPRETER_EARLY_EXITS: 3, TOOLS_POST_APPLICATIONS: 77, TOOLS_POST_TIME: 0.2s, TOOLS_POST_CALL_APPLICATIONS: 18, TOOLS_POST_CALL_TIME: 0.1s, TOOLS_POST_RETURN_APPLICATIONS: 12, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 107, TOOLS_QUANTIFIERELIM_TIME: 0.4s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 151, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 21, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 4, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 6, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 43, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME: 0.1s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 6, CALL_SUMMARIZER_APPLICATIONS: 12, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME: 0.1s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 516, DAG_COMPRESSION_RETAINED_NODES: 128, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-23 14:01:55,487 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-11-23 14:01:55,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 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_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW --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 f330893f1140a32f6e6dacd6cc5115391759545d59ea17334f6f3b644ed5a51c --- 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-4e7fbc6 [2022-11-23 14:01:58,150 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:01:58,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:01:58,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:01:58,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:01:58,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:01:58,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:01:58,230 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:01:58,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:01:58,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:01:58,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:01:58,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:01:58,244 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:01:58,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:01:58,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:01:58,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:01:58,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:01:58,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:01:58,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:01:58,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:01:58,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:01:58,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:01:58,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:01:58,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:01:58,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:01:58,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:01:58,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:01:58,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:01:58,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:01:58,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:01:58,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:01:58,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:01:58,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:01:58,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:01:58,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:01:58,287 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:01:58,288 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:01:58,289 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:01:58,289 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:01:58,290 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:01:58,291 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:01:58,297 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Bitvector.epf [2022-11-23 14:01:58,354 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:01:58,354 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:01:58,356 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:01:58,356 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:01:58,358 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:01:58,358 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:01:58,358 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:01:58,358 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:01:58,359 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:01:58,359 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:01:58,360 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:01:58,361 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:01:58,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:01:58,362 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:01:58,362 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 14:01:58,363 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:01:58,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:01:58,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:01:58,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:01:58,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:01:58,364 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 14:01:58,364 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 14:01:58,364 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 14:01:58,364 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 14:01:58,365 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:01:58,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:01:58,365 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:01:58,365 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:01:58,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:01:58,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 14:01:58,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:01:58,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:01:58,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:01:58,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:01:58,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:01:58,368 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 14:01:58,368 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 14:01:58,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:01:58,369 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:01:58,369 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 14:01:58,369 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_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f330893f1140a32f6e6dacd6cc5115391759545d59ea17334f6f3b644ed5a51c [2022-11-23 14:01:58,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:01:58,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:01:58,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:01:58,865 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:01:58,866 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:01:58,867 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2022-11-23 14:02:02,160 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:02:02,461 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:02:02,462 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2022-11-23 14:02:02,479 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/data/f20eec231/10aacdda42454d48ac6145cec0c98009/FLAG821ac57d7 [2022-11-23 14:02:02,513 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/data/f20eec231/10aacdda42454d48ac6145cec0c98009 [2022-11-23 14:02:02,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:02:02,520 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:02:02,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:02:02,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:02:02,528 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:02:02,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:02:02" (1/1) ... [2022-11-23 14:02:02,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16faa990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:02, skipping insertion in model container [2022-11-23 14:02:02,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:02:02" (1/1) ... [2022-11-23 14:02:02,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:02:02,593 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:02:02,852 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_625cabb6-aa26-425e-882d-be9f291e2ff5/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c[728,741] [2022-11-23 14:02:02,944 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:02:02,957 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:02:02,969 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_625cabb6-aa26-425e-882d-be9f291e2ff5/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c[728,741] [2022-11-23 14:02:02,995 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:02:03,013 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:02:03,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:03 WrapperNode [2022-11-23 14:02:03,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:02:03,017 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:02:03,017 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:02:03,017 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:02:03,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:03" (1/1) ... [2022-11-23 14:02:03,052 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:03" (1/1) ... [2022-11-23 14:02:03,088 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 122 [2022-11-23 14:02:03,092 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:02:03,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:02:03,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:02:03,095 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:02:03,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:03" (1/1) ... [2022-11-23 14:02:03,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:03" (1/1) ... [2022-11-23 14:02:03,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:03" (1/1) ... [2022-11-23 14:02:03,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:03" (1/1) ... [2022-11-23 14:02:03,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:03" (1/1) ... [2022-11-23 14:02:03,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:03" (1/1) ... [2022-11-23 14:02:03,138 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:03" (1/1) ... [2022-11-23 14:02:03,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:03" (1/1) ... [2022-11-23 14:02:03,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:02:03,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:02:03,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:02:03,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:02:03,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:03" (1/1) ... [2022-11-23 14:02:03,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:02:03,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:02:03,197 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:02:03,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:02:03,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:02:03,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 14:02:03,252 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-23 14:02:03,252 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-23 14:02:03,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:02:03,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:02:03,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-23 14:02:03,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-23 14:02:03,376 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:02:03,378 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:02:04,032 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:02:04,040 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:02:04,040 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 14:02:04,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:02:04 BoogieIcfgContainer [2022-11-23 14:02:04,043 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:02:04,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:02:04,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:02:04,051 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:02:04,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:02:02" (1/3) ... [2022-11-23 14:02:04,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18daf4b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:02:04, skipping insertion in model container [2022-11-23 14:02:04,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:03" (2/3) ... [2022-11-23 14:02:04,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18daf4b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:02:04, skipping insertion in model container [2022-11-23 14:02:04,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:02:04" (3/3) ... [2022-11-23 14:02:04,055 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2022-11-23 14:02:04,080 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:02:04,081 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-23 14:02:04,157 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:02:04,165 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;@148c6e2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:02:04,166 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-23 14:02:04,171 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 61 states have (on average 1.6721311475409837) internal successors, (102), 80 states have internal predecessors, (102), 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) [2022-11-23 14:02:04,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 14:02:04,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:02:04,183 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:02:04,184 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 14:02:04,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:02:04,192 INFO L85 PathProgramCache]: Analyzing trace with hash -146311098, now seen corresponding path program 1 times [2022-11-23 14:02:04,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:02:04,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584475063] [2022-11-23 14:02:04,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:02:04,210 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 [2022-11-23 14:02:04,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:02:04,219 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 14:02:04,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:02:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:02:04,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-23 14:02:04,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:02:04,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:02:04,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:02:04,343 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:02:04,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584475063] [2022-11-23 14:02:04,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584475063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:02:04,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:02:04,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 14:02:04,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666298494] [2022-11-23 14:02:04,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:02:04,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 14:02:04,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:02:04,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 14:02:04,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 14:02:04,394 INFO L87 Difference]: Start difference. First operand has 87 states, 61 states have (on average 1.6721311475409837) internal successors, (102), 80 states have internal predecessors, (102), 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) [2022-11-23 14:02:04,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:02:04,433 INFO L93 Difference]: Finished difference Result 161 states and 225 transitions. [2022-11-23 14:02:04,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 14:02:04,437 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 [2022-11-23 14:02:04,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:02:04,449 INFO L225 Difference]: With dead ends: 161 [2022-11-23 14:02:04,450 INFO L226 Difference]: Without dead ends: 61 [2022-11-23 14:02:04,457 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 [2022-11-23 14:02:04,462 INFO L413 NwaCegarLoop]: 97 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, 97 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 [2022-11-23 14:02:04,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:02:04,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-23 14:02:04,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-11-23 14:02:04,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 55 states have internal predecessors, (65), 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) [2022-11-23 14:02:04,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2022-11-23 14:02:04,536 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 9 [2022-11-23 14:02:04,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:02:04,538 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2022-11-23 14:02:04,539 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) [2022-11-23 14:02:04,540 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2022-11-23 14:02:04,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 14:02:04,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:02:04,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:02:04,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:02:04,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:02:04,757 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 14:02:04,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:02:04,757 INFO L85 PathProgramCache]: Analyzing trace with hash -147252364, now seen corresponding path program 1 times [2022-11-23 14:02:04,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:02:04,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1620166703] [2022-11-23 14:02:04,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:02:04,758 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 [2022-11-23 14:02:04,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:02:04,792 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 14:02:04,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:02:04,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:02:04,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:02:04,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:02:04,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:02:04,946 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:02:04,946 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:02:04,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1620166703] [2022-11-23 14:02:04,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1620166703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:02:04,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:02:04,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:02:04,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942718692] [2022-11-23 14:02:04,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:02:04,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:02:04,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:02:04,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:02:04,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:02:04,959 INFO L87 Difference]: Start difference. First operand 61 states and 73 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) [2022-11-23 14:02:05,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:02:05,078 INFO L93 Difference]: Finished difference Result 127 states and 153 transitions. [2022-11-23 14:02:05,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:02:05,080 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 [2022-11-23 14:02:05,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:02:05,086 INFO L225 Difference]: With dead ends: 127 [2022-11-23 14:02:05,086 INFO L226 Difference]: Without dead ends: 69 [2022-11-23 14:02:05,092 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 [2022-11-23 14:02:05,094 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 9 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:02:05,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 196 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:02:05,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-23 14:02:05,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66. [2022-11-23 14:02:05,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 52 states have (on average 1.3269230769230769) internal successors, (69), 59 states have internal predecessors, (69), 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) [2022-11-23 14:02:05,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2022-11-23 14:02:05,116 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 9 [2022-11-23 14:02:05,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:02:05,117 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2022-11-23 14:02:05,118 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) [2022-11-23 14:02:05,118 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2022-11-23 14:02:05,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 14:02:05,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:02:05,119 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:02:05,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:02:05,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:02:05,331 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 14:02:05,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:02:05,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1113461066, now seen corresponding path program 1 times [2022-11-23 14:02:05,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:02:05,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077443709] [2022-11-23 14:02:05,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:02:05,333 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 [2022-11-23 14:02:05,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:02:05,337 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 14:02:05,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:02:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:02:05,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:02:05,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:02:05,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:02:05,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:02:05,471 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:02:05,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077443709] [2022-11-23 14:02:05,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1077443709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:02:05,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:02:05,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:02:05,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132705010] [2022-11-23 14:02:05,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:02:05,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:02:05,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:02:05,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:02:05,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:02:05,475 INFO L87 Difference]: Start difference. First operand 66 states and 77 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) [2022-11-23 14:02:05,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:02:05,661 INFO L93 Difference]: Finished difference Result 159 states and 192 transitions. [2022-11-23 14:02:05,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:02:05,665 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 [2022-11-23 14:02:05,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:02:05,666 INFO L225 Difference]: With dead ends: 159 [2022-11-23 14:02:05,666 INFO L226 Difference]: Without dead ends: 103 [2022-11-23 14:02:05,667 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 [2022-11-23 14:02:05,668 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 55 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:02:05,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 187 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:02:05,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-23 14:02:05,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 96. [2022-11-23 14:02:05,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 81 states have (on average 1.3333333333333333) internal successors, (108), 88 states have internal predecessors, (108), 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) [2022-11-23 14:02:05,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 116 transitions. [2022-11-23 14:02:05,690 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 116 transitions. Word has length 16 [2022-11-23 14:02:05,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:02:05,692 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 116 transitions. [2022-11-23 14:02:05,692 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) [2022-11-23 14:02:05,692 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 116 transitions. [2022-11-23 14:02:05,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-23 14:02:05,696 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:02:05,697 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] [2022-11-23 14:02:05,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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)] Forceful destruction successful, exit code 0 [2022-11-23 14:02:05,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:02:05,899 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 14:02:05,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:02:05,900 INFO L85 PathProgramCache]: Analyzing trace with hash 206311476, now seen corresponding path program 1 times [2022-11-23 14:02:05,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:02:05,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [594625020] [2022-11-23 14:02:05,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:02:05,902 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 [2022-11-23 14:02:05,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:02:05,903 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 14:02:05,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:02:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:02:05,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:02:05,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:02:06,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:02:06,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:02:06,022 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:02:06,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [594625020] [2022-11-23 14:02:06,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [594625020] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:02:06,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:02:06,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:02:06,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190901893] [2022-11-23 14:02:06,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:02:06,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:02:06,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:02:06,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:02:06,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:02:06,025 INFO L87 Difference]: Start difference. First operand 96 states and 116 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) [2022-11-23 14:02:06,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:02:06,174 INFO L93 Difference]: Finished difference Result 170 states and 201 transitions. [2022-11-23 14:02:06,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:02:06,175 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 [2022-11-23 14:02:06,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:02:06,177 INFO L225 Difference]: With dead ends: 170 [2022-11-23 14:02:06,177 INFO L226 Difference]: Without dead ends: 95 [2022-11-23 14:02:06,178 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 [2022-11-23 14:02:06,179 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 38 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:02:06,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 262 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:02:06,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-23 14:02:06,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 85. [2022-11-23 14:02:06,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 70 states have (on average 1.3) internal successors, (91), 77 states have internal predecessors, (91), 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) [2022-11-23 14:02:06,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 99 transitions. [2022-11-23 14:02:06,196 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 99 transitions. Word has length 21 [2022-11-23 14:02:06,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:02:06,196 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 99 transitions. [2022-11-23 14:02:06,197 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) [2022-11-23 14:02:06,197 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 99 transitions. [2022-11-23 14:02:06,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-23 14:02:06,198 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:02:06,198 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:02:06,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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)] Forceful destruction successful, exit code 0 [2022-11-23 14:02:06,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:02:06,399 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 14:02:06,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:02:06,400 INFO L85 PathProgramCache]: Analyzing trace with hash 206202372, now seen corresponding path program 1 times [2022-11-23 14:02:06,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:02:06,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1320530832] [2022-11-23 14:02:06,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:02:06,401 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 [2022-11-23 14:02:06,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:02:06,403 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 14:02:06,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:02:06,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:02:06,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:02:06,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:02:06,531 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:02:06,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:02:06,728 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:02:06,729 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:02:06,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1320530832] [2022-11-23 14:02:06,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1320530832] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:02:06,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [679550332] [2022-11-23 14:02:06,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:02:06,731 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 14:02:06,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 14:02:06,737 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 14:02:06,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-23 14:02:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:02:06,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:02:06,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:02:06,892 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:02:06,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:02:06,992 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:02:06,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [679550332] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:02:06,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824805461] [2022-11-23 14:02:06,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:02:06,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:02:06,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:02:07,003 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:02:07,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 14:02:07,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:02:07,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:02:07,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:02:07,116 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:02:07,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:02:07,183 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:02:07,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824805461] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:02:07,183 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 14:02:07,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 7 [2022-11-23 14:02:07,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548956279] [2022-11-23 14:02:07,184 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 14:02:07,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 14:02:07,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:02:07,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 14:02:07,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:02:07,187 INFO L87 Difference]: Start difference. First operand 85 states and 99 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) [2022-11-23 14:02:07,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:02:07,845 INFO L93 Difference]: Finished difference Result 181 states and 221 transitions. [2022-11-23 14:02:07,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 14:02:07,846 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 [2022-11-23 14:02:07,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:02:07,848 INFO L225 Difference]: With dead ends: 181 [2022-11-23 14:02:07,848 INFO L226 Difference]: Without dead ends: 122 [2022-11-23 14:02:07,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:02:07,849 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 190 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:02:07,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 301 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:02:07,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-23 14:02:07,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 86. [2022-11-23 14:02:07,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 72 states have (on average 1.2638888888888888) internal successors, (91), 78 states have internal predecessors, (91), 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) [2022-11-23 14:02:07,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 99 transitions. [2022-11-23 14:02:07,865 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 99 transitions. Word has length 21 [2022-11-23 14:02:07,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:02:07,865 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 99 transitions. [2022-11-23 14:02:07,865 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) [2022-11-23 14:02:07,866 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 99 transitions. [2022-11-23 14:02:07,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-23 14:02:07,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:02:07,867 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] [2022-11-23 14:02:07,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-23 14:02:08,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-23 14:02:08,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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)] Forceful destruction successful, exit code 0 [2022-11-23 14:02:08,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:02:08,473 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 14:02:08,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:02:08,474 INFO L85 PathProgramCache]: Analyzing trace with hash 710516666, now seen corresponding path program 1 times [2022-11-23 14:02:08,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:02:08,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [517725750] [2022-11-23 14:02:08,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:02:08,475 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 [2022-11-23 14:02:08,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:02:08,477 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 14:02:08,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 (9)] Waiting until timeout for monitored process [2022-11-23 14:02:08,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:02:08,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 14:02:08,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:02:08,597 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:02:08,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:02:08,717 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:02:08,717 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:02:08,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [517725750] [2022-11-23 14:02:08,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [517725750] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:02:08,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2126507949] [2022-11-23 14:02:08,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:02:08,718 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 14:02:08,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 14:02:08,719 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 14:02:08,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-23 14:02:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:02:08,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 14:02:08,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:02:08,881 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:02:08,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:02:08,940 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:02:08,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2126507949] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:02:08,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145084780] [2022-11-23 14:02:08,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:02:08,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:02:08,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:02:08,943 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:02:08,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 14:02:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:02:09,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 14:02:09,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:02:09,077 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:02:09,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:02:09,229 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:02:09,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145084780] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:02:09,230 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 14:02:09,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 7] total 13 [2022-11-23 14:02:09,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642607130] [2022-11-23 14:02:09,231 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 14:02:09,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 14:02:09,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:02:09,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 14:02:09,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-11-23 14:02:09,232 INFO L87 Difference]: Start difference. First operand 86 states and 99 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) [2022-11-23 14:02:09,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:02:09,727 INFO L93 Difference]: Finished difference Result 197 states and 233 transitions. [2022-11-23 14:02:09,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-23 14:02:09,729 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 [2022-11-23 14:02:09,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:02:09,731 INFO L225 Difference]: With dead ends: 197 [2022-11-23 14:02:09,731 INFO L226 Difference]: Without dead ends: 136 [2022-11-23 14:02:09,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=179, Invalid=373, Unknown=0, NotChecked=0, Total=552 [2022-11-23 14:02:09,734 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 187 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:02:09,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 578 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:02:09,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-11-23 14:02:09,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 104. [2022-11-23 14:02:09,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 90 states have (on average 1.2444444444444445) internal successors, (112), 96 states have internal predecessors, (112), 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) [2022-11-23 14:02:09,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 120 transitions. [2022-11-23 14:02:09,758 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 120 transitions. Word has length 26 [2022-11-23 14:02:09,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:02:09,758 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 120 transitions. [2022-11-23 14:02:09,758 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) [2022-11-23 14:02:09,759 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 120 transitions. [2022-11-23 14:02:09,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-23 14:02:09,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:02:09,763 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] [2022-11-23 14:02:09,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-23 14:02:09,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 14:02:10,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 (9)] Forceful destruction successful, exit code 0 [2022-11-23 14:02:10,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:02:10,366 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 14:02:10,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:02:10,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1133060784, now seen corresponding path program 1 times [2022-11-23 14:02:10,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:02:10,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1103701041] [2022-11-23 14:02:10,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:02:10,367 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 [2022-11-23 14:02:10,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:02:10,369 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 14:02:10,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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)] Waiting until timeout for monitored process [2022-11-23 14:02:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:02:10,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 14:02:10,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:02:10,548 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:02:10,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:02:10,887 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:02:10,887 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:02:10,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1103701041] [2022-11-23 14:02:10,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1103701041] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:02:10,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1982471720] [2022-11-23 14:02:10,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:02:10,888 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 14:02:10,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 14:02:10,891 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 14:02:10,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-23 14:02:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:02:10,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 14:02:10,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:02:11,063 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:02:11,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:02:11,237 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:02:11,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1982471720] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:02:11,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572656572] [2022-11-23 14:02:11,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:02:11,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:02:11,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:02:11,243 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:02:11,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-23 14:02:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:02:11,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 14:02:11,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:02:11,378 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:02:11,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:02:11,546 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:02:11,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572656572] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:02:11,547 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 14:02:11,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2022-11-23 14:02:11,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035843292] [2022-11-23 14:02:11,547 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 14:02:11,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 14:02:11,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:02:11,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 14:02:11,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:02:11,548 INFO L87 Difference]: Start difference. First operand 104 states and 120 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 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) [2022-11-23 14:02:12,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:02:12,436 INFO L93 Difference]: Finished difference Result 251 states and 304 transitions. [2022-11-23 14:02:12,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 14:02:12,438 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 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 38 [2022-11-23 14:02:12,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:02:12,440 INFO L225 Difference]: With dead ends: 251 [2022-11-23 14:02:12,440 INFO L226 Difference]: Without dead ends: 190 [2022-11-23 14:02:12,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=149, Unknown=0, NotChecked=0, Total=240 [2022-11-23 14:02:12,441 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 132 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:02:12,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 493 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 14:02:12,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-11-23 14:02:12,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 106. [2022-11-23 14:02:12,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 92 states have (on average 1.2065217391304348) internal successors, (111), 98 states have internal predecessors, (111), 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) [2022-11-23 14:02:12,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 119 transitions. [2022-11-23 14:02:12,473 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 119 transitions. Word has length 38 [2022-11-23 14:02:12,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:02:12,475 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 119 transitions. [2022-11-23 14:02:12,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 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) [2022-11-23 14:02:12,476 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 119 transitions. [2022-11-23 14:02:12,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-23 14:02:12,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:02:12,483 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] [2022-11-23 14:02:12,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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)] Ended with exit code 0 [2022-11-23 14:02:12,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2022-11-23 14:02:12,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-23 14:02:13,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:02:13,095 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 14:02:13,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:02:13,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1445955526, now seen corresponding path program 2 times [2022-11-23 14:02:13,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:02:13,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749687107] [2022-11-23 14:02:13,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 14:02:13,096 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 [2022-11-23 14:02:13,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:02:13,098 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 14:02:13,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 (15)] Waiting until timeout for monitored process [2022-11-23 14:02:13,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 14:02:13,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:02:13,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 14:02:13,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:02:13,337 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 2 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:02:13,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:02:13,669 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 2 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:02:13,670 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:02:13,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749687107] [2022-11-23 14:02:13,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749687107] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:02:13,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [266602101] [2022-11-23 14:02:13,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 14:02:13,670 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 14:02:13,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 14:02:13,675 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 14:02:13,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2022-11-23 14:02:13,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 14:02:13,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:02:13,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 14:02:13,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:02:13,889 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 2 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:02:13,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:02:14,002 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 2 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:02:14,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [266602101] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:02:14,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730292059] [2022-11-23 14:02:14,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 14:02:14,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:02:14,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:02:14,005 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:02:14,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-23 14:02:14,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 14:02:14,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:02:14,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 14:02:14,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:02:14,204 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 2 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:02:14,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:02:14,737 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 2 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:02:14,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730292059] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:02:14,737 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 14:02:14,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10, 11, 10, 11] total 26 [2022-11-23 14:02:14,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954048120] [2022-11-23 14:02:14,738 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 14:02:14,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-23 14:02:14,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:02:14,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-23 14:02:14,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=478, Unknown=0, NotChecked=0, Total=650 [2022-11-23 14:02:14,740 INFO L87 Difference]: Start difference. First operand 106 states and 119 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) [2022-11-23 14:02:16,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:02:16,721 INFO L93 Difference]: Finished difference Result 290 states and 346 transitions. [2022-11-23 14:02:16,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-23 14:02:16,722 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 [2022-11-23 14:02:16,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:02:16,725 INFO L225 Difference]: With dead ends: 290 [2022-11-23 14:02:16,725 INFO L226 Difference]: Without dead ends: 229 [2022-11-23 14:02:16,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=835, Invalid=2027, Unknown=0, NotChecked=0, Total=2862 [2022-11-23 14:02:16,730 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 566 mSDsluCounter, 1446 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 1555 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:02:16,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 1555 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 14:02:16,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-11-23 14:02:16,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 144. [2022-11-23 14:02:16,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 130 states have (on average 1.2) internal successors, (156), 136 states have internal predecessors, (156), 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) [2022-11-23 14:02:16,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 164 transitions. [2022-11-23 14:02:16,763 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 164 transitions. Word has length 46 [2022-11-23 14:02:16,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:02:16,764 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 164 transitions. [2022-11-23 14:02:16,764 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) [2022-11-23 14:02:16,764 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 164 transitions. [2022-11-23 14:02:16,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-23 14:02:16,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:02:16,767 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] [2022-11-23 14:02:16,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 (15)] Forceful destruction successful, exit code 0 [2022-11-23 14:02:16,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2022-11-23 14:02:17,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-23 14:02:17,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:02:17,380 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 14:02:17,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:02:17,380 INFO L85 PathProgramCache]: Analyzing trace with hash 285162288, now seen corresponding path program 2 times [2022-11-23 14:02:17,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:02:17,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436753130] [2022-11-23 14:02:17,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 14:02:17,381 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 [2022-11-23 14:02:17,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:02:17,382 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 14:02:17,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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)] Waiting until timeout for monitored process [2022-11-23 14:02:17,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-23 14:02:17,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:02:17,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:02:17,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:02:17,432 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-11-23 14:02:17,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:02:17,433 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:02:17,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1436753130] [2022-11-23 14:02:17,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1436753130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:02:17,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:02:17,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:02:17,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775991891] [2022-11-23 14:02:17,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:02:17,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:02:17,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:02:17,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:02:17,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:02:17,435 INFO L87 Difference]: Start difference. First operand 144 states and 164 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) [2022-11-23 14:02:17,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:02:17,473 INFO L93 Difference]: Finished difference Result 150 states and 171 transitions. [2022-11-23 14:02:17,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:02:17,474 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 [2022-11-23 14:02:17,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:02:17,479 INFO L225 Difference]: With dead ends: 150 [2022-11-23 14:02:17,479 INFO L226 Difference]: Without dead ends: 149 [2022-11-23 14:02:17,479 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 [2022-11-23 14:02:17,482 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 2 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:02:17,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 134 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:02:17,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-11-23 14:02:17,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 143. [2022-11-23 14:02:17,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 130 states have (on average 1.1923076923076923) internal successors, (155), 135 states have internal predecessors, (155), 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) [2022-11-23 14:02:17,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 163 transitions. [2022-11-23 14:02:17,502 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 163 transitions. Word has length 58 [2022-11-23 14:02:17,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:02:17,504 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 163 transitions. [2022-11-23 14:02:17,504 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) [2022-11-23 14:02:17,504 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 163 transitions. [2022-11-23 14:02:17,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-23 14:02:17,507 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:02:17,507 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] [2022-11-23 14:02:17,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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)] Forceful destruction successful, exit code 0 [2022-11-23 14:02:17,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:02:17,718 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 14:02:17,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:02:17,718 INFO L85 PathProgramCache]: Analyzing trace with hash 285229814, now seen corresponding path program 1 times [2022-11-23 14:02:17,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:02:17,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735504583] [2022-11-23 14:02:17,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:02:17,719 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 [2022-11-23 14:02:17,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:02:17,720 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 14:02:17,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:02:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:02:17,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 14:02:17,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:02:18,034 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:02:18,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:02:18,785 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:02:18,785 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:02:18,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1735504583] [2022-11-23 14:02:18,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1735504583] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:02:18,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1993943784] [2022-11-23 14:02:18,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:02:18,786 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 14:02:18,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 14:02:18,787 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 14:02:18,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-11-23 14:02:18,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:02:18,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 14:02:18,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:02:19,042 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:02:19,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:02:19,437 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:02:19,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1993943784] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:02:19,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023733325] [2022-11-23 14:02:19,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:02:19,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:02:19,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:02:19,439 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:02:19,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-23 14:02:19,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:02:19,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 14:02:19,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:02:19,851 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:02:19,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:02:21,044 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:02:21,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023733325] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:02:21,045 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 14:02:21,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 11, 11] total 27 [2022-11-23 14:02:21,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978230716] [2022-11-23 14:02:21,046 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 14:02:21,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-23 14:02:21,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:02:21,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-23 14:02:21,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=469, Unknown=0, NotChecked=0, Total=702 [2022-11-23 14:02:21,047 INFO L87 Difference]: Start difference. First operand 143 states and 163 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) [2022-11-23 14:02:24,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:02:24,125 INFO L93 Difference]: Finished difference Result 398 states and 488 transitions. [2022-11-23 14:02:24,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-23 14:02:24,131 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 [2022-11-23 14:02:24,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:02:24,133 INFO L225 Difference]: With dead ends: 398 [2022-11-23 14:02:24,133 INFO L226 Difference]: Without dead ends: 338 [2022-11-23 14:02:24,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=625, Invalid=1181, Unknown=0, NotChecked=0, Total=1806 [2022-11-23 14:02:24,134 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 546 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:02:24,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 1040 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-23 14:02:24,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-11-23 14:02:24,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 145. [2022-11-23 14:02:24,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 132 states have (on average 1.1363636363636365) internal successors, (150), 137 states have internal predecessors, (150), 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) [2022-11-23 14:02:24,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 158 transitions. [2022-11-23 14:02:24,161 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 158 transitions. Word has length 58 [2022-11-23 14:02:24,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:02:24,162 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 158 transitions. [2022-11-23 14:02:24,162 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) [2022-11-23 14:02:24,162 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 158 transitions. [2022-11-23 14:02:24,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-23 14:02:24,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:02:24,163 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] [2022-11-23 14:02:24,171 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-11-23 14:02:24,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2022-11-23 14:02:24,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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)] Forceful destruction successful, exit code 0 [2022-11-23 14:02:24,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:02:24,772 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 14:02:24,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:02:24,773 INFO L85 PathProgramCache]: Analyzing trace with hash -205887174, now seen corresponding path program 3 times [2022-11-23 14:02:24,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:02:24,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [737294490] [2022-11-23 14:02:24,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:02:24,773 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 [2022-11-23 14:02:24,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:02:24,774 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 14:02:24,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 (22)] Waiting until timeout for monitored process [2022-11-23 14:02:24,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2022-11-23 14:02:24,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:02:24,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-23 14:02:24,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:02:25,182 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 2 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:02:25,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:02:26,323 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 2 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:02:26,324 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:02:26,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [737294490] [2022-11-23 14:02:26,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [737294490] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:02:26,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [558641813] [2022-11-23 14:02:26,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:02:26,324 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 14:02:26,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 14:02:26,331 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 14:02:26,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-11-23 14:02:26,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2022-11-23 14:02:26,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:02:26,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-23 14:02:26,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:02:26,649 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 2 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:02:26,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:02:27,022 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 2 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:02:27,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [558641813] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:02:27,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303427698] [2022-11-23 14:02:27,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:02:27,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:02:27,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:02:27,027 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:02:27,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-23 14:02:27,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2022-11-23 14:02:27,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:02:27,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-23 14:02:27,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:02:27,322 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 2 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:02:27,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:02:27,729 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 2 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:02:27,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303427698] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:02:27,730 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 14:02:27,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 18, 19, 18, 19] total 35 [2022-11-23 14:02:27,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150441424] [2022-11-23 14:02:27,731 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 14:02:27,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-23 14:02:27,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:02:27,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-23 14:02:27,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=886, Unknown=0, NotChecked=0, Total=1190 [2022-11-23 14:02:27,733 INFO L87 Difference]: Start difference. First operand 145 states and 158 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) [2022-11-23 14:02:36,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:02:36,127 INFO L93 Difference]: Finished difference Result 495 states and 597 transitions. [2022-11-23 14:02:36,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-11-23 14:02:36,127 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 [2022-11-23 14:02:36,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:02:36,130 INFO L225 Difference]: With dead ends: 495 [2022-11-23 14:02:36,130 INFO L226 Difference]: Without dead ends: 435 [2022-11-23 14:02:36,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2296 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=2711, Invalid=7189, Unknown=0, NotChecked=0, Total=9900 [2022-11-23 14:02:36,133 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 1096 mSDsluCounter, 2643 mSDsCounter, 0 mSdLazyCounter, 1525 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 2828 SdHoareTripleChecker+Invalid, 1633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:02:36,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1096 Valid, 2828 Invalid, 1633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1525 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-23 14:02:36,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-11-23 14:02:36,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 223. [2022-11-23 14:02:36,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 210 states have (on average 1.161904761904762) internal successors, (244), 215 states have internal predecessors, (244), 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) [2022-11-23 14:02:36,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 252 transitions. [2022-11-23 14:02:36,165 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 252 transitions. Word has length 86 [2022-11-23 14:02:36,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:02:36,165 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 252 transitions. [2022-11-23 14:02:36,166 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) [2022-11-23 14:02:36,166 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 252 transitions. [2022-11-23 14:02:36,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-23 14:02:36,167 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:02:36,167 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] [2022-11-23 14:02:36,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 (22)] Forceful destruction successful, exit code 0 [2022-11-23 14:02:36,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2022-11-23 14:02:36,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-11-23 14:02:36,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:02:36,779 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 14:02:36,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:02:36,779 INFO L85 PathProgramCache]: Analyzing trace with hash 512275446, now seen corresponding path program 2 times [2022-11-23 14:02:36,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:02:36,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1244321209] [2022-11-23 14:02:36,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 14:02:36,780 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 [2022-11-23 14:02:36,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:02:36,781 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 14:02:36,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 (25)] Waiting until timeout for monitored process [2022-11-23 14:02:36,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 14:02:36,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:02:36,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-23 14:02:36,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:02:37,601 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 9 proven. 483 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:02:37,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:02:39,756 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 9 proven. 483 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:02:39,757 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:02:39,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1244321209] [2022-11-23 14:02:39,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1244321209] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:02:39,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [835975100] [2022-11-23 14:02:39,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 14:02:39,757 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 14:02:39,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 14:02:39,758 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 14:02:39,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-11-23 14:02:39,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 14:02:39,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:02:39,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-23 14:02:39,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:02:40,151 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 9 proven. 483 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:02:40,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:02:40,863 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 9 proven. 483 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:02:40,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [835975100] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:02:40,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081408881] [2022-11-23 14:02:40,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 14:02:40,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:02:40,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:02:40,867 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:02:40,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-23 14:02:40,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 14:02:40,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:02:40,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-23 14:02:40,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:02:41,509 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 9 proven. 483 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:02:41,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:02:45,332 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 9 proven. 483 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:02:45,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081408881] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:02:45,332 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 14:02:45,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18, 18, 19, 19] total 51 [2022-11-23 14:02:45,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677764787] [2022-11-23 14:02:45,332 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 14:02:45,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-23 14:02:45,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:02:45,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-23 14:02:45,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=789, Invalid=1761, Unknown=0, NotChecked=0, Total=2550 [2022-11-23 14:02:45,335 INFO L87 Difference]: Start difference. First operand 223 states and 252 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) [2022-11-23 14:02:57,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:02:57,520 INFO L93 Difference]: Finished difference Result 692 states and 856 transitions. [2022-11-23 14:02:57,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-23 14:02:57,524 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 [2022-11-23 14:02:57,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:02:57,527 INFO L225 Difference]: With dead ends: 692 [2022-11-23 14:02:57,527 INFO L226 Difference]: Without dead ends: 632 [2022-11-23 14:02:57,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 644 GetRequests, 563 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=2273, Invalid=4533, Unknown=0, NotChecked=0, Total=6806 [2022-11-23 14:02:57,530 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 1277 mSDsluCounter, 2474 mSDsCounter, 0 mSdLazyCounter, 2774 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 2616 SdHoareTripleChecker+Invalid, 3017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 2774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:02:57,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1277 Valid, 2616 Invalid, 3017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 2774 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-23 14:02:57,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2022-11-23 14:02:57,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 225. [2022-11-23 14:02:57,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 212 states have (on average 1.0896226415094339) internal successors, (231), 217 states have internal predecessors, (231), 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) [2022-11-23 14:02:57,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 239 transitions. [2022-11-23 14:02:57,590 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 239 transitions. Word has length 98 [2022-11-23 14:02:57,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:02:57,591 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 239 transitions. [2022-11-23 14:02:57,591 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) [2022-11-23 14:02:57,591 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 239 transitions. [2022-11-23 14:02:57,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-23 14:02:57,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:02:57,598 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] [2022-11-23 14:02:57,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-23 14:02:57,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2022-11-23 14:02:58,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 (25)] Forceful destruction successful, exit code 0 [2022-11-23 14:02:58,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:02:58,206 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 14:02:58,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:02:58,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1070477702, now seen corresponding path program 4 times [2022-11-23 14:02:58,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:02:58,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [578918505] [2022-11-23 14:02:58,206 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 14:02:58,206 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 [2022-11-23 14:02:58,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:02:58,207 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 14:02:58,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 (28)] Waiting until timeout for monitored process [2022-11-23 14:02:58,273 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 14:02:58,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:02:58,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-23 14:02:58,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:02:58,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1382 backedges. 2 proven. 1380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:02:58,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:03:02,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1382 backedges. 2 proven. 1380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:03:02,501 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:03:02,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [578918505] [2022-11-23 14:03:02,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [578918505] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:03:02,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [573695948] [2022-11-23 14:03:02,502 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 14:03:02,502 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 14:03:02,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 14:03:02,504 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 14:03:02,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2022-11-23 14:03:02,682 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 14:03:02,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:03:02,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-23 14:03:02,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:03:02,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1382 backedges. 2 proven. 1380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:03:02,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:03:03,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1382 backedges. 2 proven. 1380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:03:03,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [573695948] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:03:03,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095189854] [2022-11-23 14:03:03,368 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 14:03:03,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:03:03,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:03:03,369 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:03:03,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-23 14:03:03,455 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 14:03:03,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:03:03,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-23 14:03:03,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:03:03,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1382 backedges. 2 proven. 1380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:03:03,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:03:04,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1382 backedges. 2 proven. 1380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:03:04,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095189854] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:03:04,147 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 14:03:04,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27, 27, 27, 27] total 53 [2022-11-23 14:03:04,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507710461] [2022-11-23 14:03:04,147 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 14:03:04,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-23 14:03:04,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:03:04,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-23 14:03:04,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=731, Invalid=2131, Unknown=0, NotChecked=0, Total=2862 [2022-11-23 14:03:04,150 INFO L87 Difference]: Start difference. First operand 225 states and 239 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) [2022-11-23 14:03:53,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:03:53,694 INFO L93 Difference]: Finished difference Result 461 states and 529 transitions. [2022-11-23 14:03:53,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-11-23 14:03:53,696 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 [2022-11-23 14:03:53,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:03:53,699 INFO L225 Difference]: With dead ends: 461 [2022-11-23 14:03:53,699 INFO L226 Difference]: Without dead ends: 460 [2022-11-23 14:03:53,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 893 GetRequests, 765 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2112 ImplicationChecksByTransitivity, 47.0s TimeCoverageRelationStatistics Valid=4535, Invalid=12235, Unknown=0, NotChecked=0, Total=16770 [2022-11-23 14:03:53,702 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 1216 mSDsluCounter, 3937 mSDsCounter, 0 mSdLazyCounter, 3926 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1216 SdHoareTripleChecker+Valid, 4044 SdHoareTripleChecker+Invalid, 4124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 3926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:03:53,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1216 Valid, 4044 Invalid, 4124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 3926 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-23 14:03:53,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-11-23 14:03:53,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 343. [2022-11-23 14:03:53,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 330 states have (on average 1.1939393939393939) internal successors, (394), 335 states have internal predecessors, (394), 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) [2022-11-23 14:03:53,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 402 transitions. [2022-11-23 14:03:53,781 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 402 transitions. Word has length 136 [2022-11-23 14:03:53,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:03:53,781 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 402 transitions. [2022-11-23 14:03:53,782 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) [2022-11-23 14:03:53,782 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 402 transitions. [2022-11-23 14:03:53,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-23 14:03:53,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:03:53,784 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] [2022-11-23 14:03:53,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 (28)] Forceful destruction successful, exit code 0 [2022-11-23 14:03:53,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2022-11-23 14:03:54,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-11-23 14:03:54,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:03:54,396 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 14:03:54,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:03:54,396 INFO L85 PathProgramCache]: Analyzing trace with hash -518441817, now seen corresponding path program 1 times [2022-11-23 14:03:54,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:03:54,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [713296968] [2022-11-23 14:03:54,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:03:54,397 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 [2022-11-23 14:03:54,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:03:54,398 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 14:03:54,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 (31)] Waiting until timeout for monitored process [2022-11-23 14:03:54,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:03:54,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:03:54,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:03:54,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1393 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1385 trivial. 0 not checked. [2022-11-23 14:03:54,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:03:54,544 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:03:54,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [713296968] [2022-11-23 14:03:54,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [713296968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:03:54,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:03:54,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:03:54,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22141283] [2022-11-23 14:03:54,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:03:54,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:03:54,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:03:54,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:03:54,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:03:54,547 INFO L87 Difference]: Start difference. First operand 343 states and 402 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2022-11-23 14:03:55,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:03:55,005 INFO L93 Difference]: Finished difference Result 355 states and 417 transitions. [2022-11-23 14:03:55,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:03:55,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 149 [2022-11-23 14:03:55,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:03:55,008 INFO L225 Difference]: With dead ends: 355 [2022-11-23 14:03:55,008 INFO L226 Difference]: Without dead ends: 354 [2022-11-23 14:03:55,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:03:55,009 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 52 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:03:55,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 148 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:03:55,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-11-23 14:03:55,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 345. [2022-11-23 14:03:55,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 332 states have (on average 1.1957831325301205) internal successors, (397), 337 states have internal predecessors, (397), 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) [2022-11-23 14:03:55,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 405 transitions. [2022-11-23 14:03:55,108 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 405 transitions. Word has length 149 [2022-11-23 14:03:55,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:03:55,108 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 405 transitions. [2022-11-23 14:03:55,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2022-11-23 14:03:55,109 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 405 transitions. [2022-11-23 14:03:55,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-23 14:03:55,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:03:55,111 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 23, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:03:55,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 (31)] Forceful destruction successful, exit code 0 [2022-11-23 14:03:55,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:03:55,323 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 14:03:55,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:03:55,323 INFO L85 PathProgramCache]: Analyzing trace with hash -356034331, now seen corresponding path program 1 times [2022-11-23 14:03:55,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:03:55,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771627529] [2022-11-23 14:03:55,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:03:55,324 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 [2022-11-23 14:03:55,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:03:55,326 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 14:03:55,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:03:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:03:55,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 14:03:55,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:03:56,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1513 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 1385 trivial. 0 not checked. [2022-11-23 14:03:56,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:03:56,306 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:03:56,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [771627529] [2022-11-23 14:03:56,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [771627529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:03:56,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:03:56,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:03:56,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049757927] [2022-11-23 14:03:56,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:03:56,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 14:03:56,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:03:56,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 14:03:56,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:03:56,308 INFO L87 Difference]: Start difference. First operand 345 states and 405 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 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) [2022-11-23 14:04:00,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:00,046 INFO L93 Difference]: Finished difference Result 360 states and 424 transitions. [2022-11-23 14:04:00,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:04:00,047 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 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 [2022-11-23 14:04:00,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:00,049 INFO L225 Difference]: With dead ends: 360 [2022-11-23 14:04:00,049 INFO L226 Difference]: Without dead ends: 359 [2022-11-23 14:04:00,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:04:00,050 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 66 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:00,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 177 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-23 14:04:00,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-11-23 14:04:00,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 224. [2022-11-23 14:04:00,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 212 states have (on average 1.080188679245283) internal successors, (229), 216 states have internal predecessors, (229), 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) [2022-11-23 14:04:00,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 237 transitions. [2022-11-23 14:04:00,115 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 237 transitions. Word has length 152 [2022-11-23 14:04:00,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:00,116 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 237 transitions. [2022-11-23 14:04:00,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 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) [2022-11-23 14:04:00,116 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 237 transitions. [2022-11-23 14:04:00,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-23 14:04:00,118 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:00,118 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:00,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:04:00,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:04:00,327 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 14:04:00,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:00,327 INFO L85 PathProgramCache]: Analyzing trace with hash 927872764, now seen corresponding path program 1 times [2022-11-23 14:04:00,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:04:00,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895969359] [2022-11-23 14:04:00,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:00,328 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 [2022-11-23 14:04:00,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:04:00,329 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 14:04:00,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:04:00,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:00,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 14:04:00,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:04:00,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1401 trivial. 0 not checked. [2022-11-23 14:04:00,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:04:00,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1401 trivial. 0 not checked. [2022-11-23 14:04:00,555 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:04:00,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895969359] [2022-11-23 14:04:00,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [895969359] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:04:00,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1132488981] [2022-11-23 14:04:00,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:00,555 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 14:04:00,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 14:04:00,559 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 14:04:00,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2022-11-23 14:04:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:00,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 14:04:00,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:04:00,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1401 trivial. 0 not checked. [2022-11-23 14:04:00,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:04:00,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1401 trivial. 0 not checked. [2022-11-23 14:04:00,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1132488981] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:04:00,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606962291] [2022-11-23 14:04:00,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:00,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:04:00,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:04:00,857 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:04:00,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-11-23 14:04:00,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:00,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 14:04:00,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:04:01,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1401 trivial. 0 not checked. [2022-11-23 14:04:01,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:04:01,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1401 trivial. 0 not checked. [2022-11-23 14:04:01,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606962291] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:04:01,076 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 14:04:01,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8, 8, 8, 8] total 10 [2022-11-23 14:04:01,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233490189] [2022-11-23 14:04:01,077 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 14:04:01,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 14:04:01,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:04:01,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 14:04:01,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:04:01,078 INFO L87 Difference]: Start difference. First operand 224 states and 237 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-23 14:04:01,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:01,348 INFO L93 Difference]: Finished difference Result 267 states and 287 transitions. [2022-11-23 14:04:01,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 14:04:01,349 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 163 [2022-11-23 14:04:01,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:01,351 INFO L225 Difference]: With dead ends: 267 [2022-11-23 14:04:01,351 INFO L226 Difference]: Without dead ends: 230 [2022-11-23 14:04:01,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 978 GetRequests, 964 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-11-23 14:04:01,352 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 39 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:01,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 534 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:04:01,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-23 14:04:01,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 227. [2022-11-23 14:04:01,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 214 states have (on average 1.0700934579439252) internal successors, (229), 219 states have internal predecessors, (229), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-23 14:04:01,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 238 transitions. [2022-11-23 14:04:01,413 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 238 transitions. Word has length 163 [2022-11-23 14:04:01,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:01,414 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 238 transitions. [2022-11-23 14:04:01,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-23 14:04:01,414 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 238 transitions. [2022-11-23 14:04:01,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-23 14:04:01,416 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:01,416 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:01,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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)] Forceful destruction successful, exit code 0 [2022-11-23 14:04:01,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-11-23 14:04:01,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (34)] Ended with exit code 0 [2022-11-23 14:04:02,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt [2022-11-23 14:04:02,029 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 14:04:02,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:02,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1439002157, now seen corresponding path program 1 times [2022-11-23 14:04:02,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:04:02,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [360868107] [2022-11-23 14:04:02,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:02,030 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 [2022-11-23 14:04:02,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:04:02,030 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 14:04:02,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 (36)] Waiting until timeout for monitored process [2022-11-23 14:04:02,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:02,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-23 14:04:02,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:04:02,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1411 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 1396 trivial. 0 not checked. [2022-11-23 14:04:02,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:04:02,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1411 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1402 trivial. 0 not checked. [2022-11-23 14:04:02,414 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:04:02,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [360868107] [2022-11-23 14:04:02,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [360868107] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-23 14:04:02,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:04:02,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 14 [2022-11-23 14:04:02,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246793642] [2022-11-23 14:04:02,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:02,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:04:02,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:04:02,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:04:02,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-23 14:04:02,416 INFO L87 Difference]: Start difference. First operand 227 states and 238 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 14:04:02,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:02,621 INFO L93 Difference]: Finished difference Result 284 states and 296 transitions. [2022-11-23 14:04:02,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 14:04:02,621 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 169 [2022-11-23 14:04:02,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:02,623 INFO L225 Difference]: With dead ends: 284 [2022-11-23 14:04:02,623 INFO L226 Difference]: Without dead ends: 260 [2022-11-23 14:04:02,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-11-23 14:04:02,624 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 77 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:02,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 317 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:04:02,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-23 14:04:02,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 233. [2022-11-23 14:04:02,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 220 states have (on average 1.0681818181818181) internal successors, (235), 224 states have internal predecessors, (235), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-23 14:04:02,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 244 transitions. [2022-11-23 14:04:02,682 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 244 transitions. Word has length 169 [2022-11-23 14:04:02,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:02,682 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 244 transitions. [2022-11-23 14:04:02,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 14:04:02,683 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 244 transitions. [2022-11-23 14:04:02,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-23 14:04:02,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:02,685 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:02,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 (36)] Ended with exit code 0 [2022-11-23 14:04:02,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:04:02,897 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 14:04:02,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:02,897 INFO L85 PathProgramCache]: Analyzing trace with hash 336005205, now seen corresponding path program 1 times [2022-11-23 14:04:02,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:04:02,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1339238974] [2022-11-23 14:04:02,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:02,898 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 [2022-11-23 14:04:02,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:04:02,899 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 14:04:02,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 (37)] Waiting until timeout for monitored process [2022-11-23 14:04:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:02,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 14:04:02,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:04:03,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1411 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1402 trivial. 0 not checked. [2022-11-23 14:04:03,049 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:04:03,050 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:04:03,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1339238974] [2022-11-23 14:04:03,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1339238974] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:03,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:03,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 14:04:03,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571648072] [2022-11-23 14:04:03,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:03,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:04:03,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:04:03,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:04:03,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:04:03,052 INFO L87 Difference]: Start difference. First operand 233 states and 244 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 14:04:03,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:03,161 INFO L93 Difference]: Finished difference Result 260 states and 271 transitions. [2022-11-23 14:04:03,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:04:03,162 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 169 [2022-11-23 14:04:03,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:03,163 INFO L225 Difference]: With dead ends: 260 [2022-11-23 14:04:03,163 INFO L226 Difference]: Without dead ends: 227 [2022-11-23 14:04:03,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-23 14:04:03,164 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 4 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:03,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 376 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:04:03,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-23 14:04:03,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 224. [2022-11-23 14:04:03,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 212 states have (on average 1.0613207547169812) internal successors, (225), 216 states have internal predecessors, (225), 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) [2022-11-23 14:04:03,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 233 transitions. [2022-11-23 14:04:03,202 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 233 transitions. Word has length 169 [2022-11-23 14:04:03,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:03,202 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 233 transitions. [2022-11-23 14:04:03,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 14:04:03,203 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 233 transitions. [2022-11-23 14:04:03,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-23 14:04:03,205 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:03,205 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:03,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 (37)] Forceful destruction successful, exit code 0 [2022-11-23 14:04:03,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:04:03,417 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 14:04:03,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:03,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1885668414, now seen corresponding path program 2 times [2022-11-23 14:04:03,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:04:03,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673650710] [2022-11-23 14:04:03,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 14:04:03,419 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 [2022-11-23 14:04:03,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:04:03,420 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 14:04:03,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 (38)] Waiting until timeout for monitored process [2022-11-23 14:04:03,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-23 14:04:03,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:04:03,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:04:03,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:04:03,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1416 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1416 trivial. 0 not checked. [2022-11-23 14:04:03,520 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:04:03,520 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:04:03,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673650710] [2022-11-23 14:04:03,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1673650710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:03,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:03,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:04:03,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178037989] [2022-11-23 14:04:03,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:03,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:04:03,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:04:03,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:04:03,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:04:03,523 INFO L87 Difference]: Start difference. First operand 224 states and 233 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 14:04:03,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:03,819 INFO L93 Difference]: Finished difference Result 224 states and 233 transitions. [2022-11-23 14:04:03,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:04:03,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 173 [2022-11-23 14:04:03,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:03,822 INFO L225 Difference]: With dead ends: 224 [2022-11-23 14:04:03,822 INFO L226 Difference]: Without dead ends: 222 [2022-11-23 14:04:03,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:04:03,823 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 3 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:03,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 114 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:04:03,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-11-23 14:04:03,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2022-11-23 14:04:03,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 212 states have (on average 1.0518867924528301) internal successors, (223), 214 states have internal predecessors, (223), 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) [2022-11-23 14:04:03,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 231 transitions. [2022-11-23 14:04:03,887 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 231 transitions. Word has length 173 [2022-11-23 14:04:03,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:03,887 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 231 transitions. [2022-11-23 14:04:03,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 14:04:03,888 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 231 transitions. [2022-11-23 14:04:03,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-23 14:04:03,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:03,891 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:03,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 (38)] Forceful destruction successful, exit code 0 [2022-11-23 14:04:04,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:04:04,105 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 14:04:04,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:04,106 INFO L85 PathProgramCache]: Analyzing trace with hash -2070306088, now seen corresponding path program 1 times [2022-11-23 14:04:04,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:04:04,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217790616] [2022-11-23 14:04:04,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:04,106 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 [2022-11-23 14:04:04,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:04:04,107 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 14:04:04,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 (39)] Waiting until timeout for monitored process [2022-11-23 14:04:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:04,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-23 14:04:04,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:04:04,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1416 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-11-23 14:04:04,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:04:04,374 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:04:04,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217790616] [2022-11-23 14:04:04,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217790616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:04,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:04,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 14:04:04,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581484558] [2022-11-23 14:04:04,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:04,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 14:04:04,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:04:04,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 14:04:04,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-23 14:04:04,376 INFO L87 Difference]: Start difference. First operand 222 states and 231 transitions. Second operand has 9 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 14:04:04,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:04,636 INFO L93 Difference]: Finished difference Result 305 states and 319 transitions. [2022-11-23 14:04:04,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:04:04,637 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 176 [2022-11-23 14:04:04,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:04,638 INFO L225 Difference]: With dead ends: 305 [2022-11-23 14:04:04,639 INFO L226 Difference]: Without dead ends: 283 [2022-11-23 14:04:04,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-23 14:04:04,640 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 82 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:04,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 495 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:04:04,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-11-23 14:04:04,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 233. [2022-11-23 14:04:04,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 221 states have (on average 1.0497737556561086) internal successors, (232), 223 states have internal predecessors, (232), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-23 14:04:04,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 245 transitions. [2022-11-23 14:04:04,714 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 245 transitions. Word has length 176 [2022-11-23 14:04:04,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:04,715 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 245 transitions. [2022-11-23 14:04:04,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 14:04:04,715 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 245 transitions. [2022-11-23 14:04:04,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-23 14:04:04,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:04,717 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:04,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 (39)] Forceful destruction successful, exit code 0 [2022-11-23 14:04:04,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:04:04,931 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 14:04:04,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:04,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1831634198, now seen corresponding path program 1 times [2022-11-23 14:04:04,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:04:04,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [621634515] [2022-11-23 14:04:04,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:04,932 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 [2022-11-23 14:04:04,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:04:04,934 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 14:04:04,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 (40)] Waiting until timeout for monitored process [2022-11-23 14:04:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:05,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-23 14:04:05,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:04:05,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1416 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-11-23 14:04:05,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:04:05,310 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:04:05,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [621634515] [2022-11-23 14:04:05,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [621634515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:05,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:05,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 14:04:05,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357058296] [2022-11-23 14:04:05,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:05,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 14:04:05,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:04:05,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 14:04:05,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:04:05,313 INFO L87 Difference]: Start difference. First operand 233 states and 245 transitions. Second operand has 12 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 14:04:05,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:05,948 INFO L93 Difference]: Finished difference Result 283 states and 296 transitions. [2022-11-23 14:04:05,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 14:04:05,949 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 176 [2022-11-23 14:04:05,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:05,950 INFO L225 Difference]: With dead ends: 283 [2022-11-23 14:04:05,950 INFO L226 Difference]: Without dead ends: 282 [2022-11-23 14:04:05,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-11-23 14:04:05,951 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 102 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:05,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 721 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:04:05,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-11-23 14:04:06,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 242. [2022-11-23 14:04:06,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 230 states have (on average 1.0478260869565217) internal successors, (241), 232 states have internal predecessors, (241), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-23 14:04:06,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 254 transitions. [2022-11-23 14:04:06,006 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 254 transitions. Word has length 176 [2022-11-23 14:04:06,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:06,006 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 254 transitions. [2022-11-23 14:04:06,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 14:04:06,007 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 254 transitions. [2022-11-23 14:04:06,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-23 14:04:06,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:06,008 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:06,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 (40)] Forceful destruction successful, exit code 0 [2022-11-23 14:04:06,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:04:06,221 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 14:04:06,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:06,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1898504190, now seen corresponding path program 1 times [2022-11-23 14:04:06,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:04:06,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [691761075] [2022-11-23 14:04:06,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:06,222 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 [2022-11-23 14:04:06,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:04:06,224 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 14:04:06,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 (41)] Waiting until timeout for monitored process [2022-11-23 14:04:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:06,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-23 14:04:06,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:04:06,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1418 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1409 trivial. 0 not checked. [2022-11-23 14:04:06,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:04:06,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1418 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1418 trivial. 0 not checked. [2022-11-23 14:04:06,663 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:04:06,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [691761075] [2022-11-23 14:04:06,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [691761075] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-23 14:04:06,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:04:06,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-11-23 14:04:06,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665438933] [2022-11-23 14:04:06,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:06,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:04:06,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:04:06,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:04:06,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:04:06,665 INFO L87 Difference]: Start difference. First operand 242 states and 254 transitions. Second operand has 5 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 14:04:07,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:07,139 INFO L93 Difference]: Finished difference Result 246 states and 257 transitions. [2022-11-23 14:04:07,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:04:07,143 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 178 [2022-11-23 14:04:07,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:07,145 INFO L225 Difference]: With dead ends: 246 [2022-11-23 14:04:07,145 INFO L226 Difference]: Without dead ends: 244 [2022-11-23 14:04:07,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:04:07,146 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 13 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:07,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 194 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:04:07,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-11-23 14:04:07,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 231. [2022-11-23 14:04:07,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 221 states have (on average 1.0407239819004526) internal successors, (230), 221 states have internal predecessors, (230), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-23 14:04:07,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 243 transitions. [2022-11-23 14:04:07,227 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 243 transitions. Word has length 178 [2022-11-23 14:04:07,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:07,230 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 243 transitions. [2022-11-23 14:04:07,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 14:04:07,231 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 243 transitions. [2022-11-23 14:04:07,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-23 14:04:07,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:07,233 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:07,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 (41)] Forceful destruction successful, exit code 0 [2022-11-23 14:04:07,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:04:07,447 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 14:04:07,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:07,448 INFO L85 PathProgramCache]: Analyzing trace with hash 552879231, now seen corresponding path program 1 times [2022-11-23 14:04:07,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:04:07,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099100519] [2022-11-23 14:04:07,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:07,449 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 [2022-11-23 14:04:07,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:04:07,451 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 14:04:07,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 (42)] Waiting until timeout for monitored process [2022-11-23 14:04:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:07,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-23 14:04:07,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:04:08,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1416 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-11-23 14:04:08,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:04:08,000 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:04:08,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1099100519] [2022-11-23 14:04:08,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1099100519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:08,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:08,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-23 14:04:08,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093325089] [2022-11-23 14:04:08,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:08,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 14:04:08,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:04:08,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 14:04:08,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-23 14:04:08,006 INFO L87 Difference]: Start difference. First operand 231 states and 243 transitions. Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 14:04:08,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:08,787 INFO L93 Difference]: Finished difference Result 277 states and 290 transitions. [2022-11-23 14:04:08,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 14:04:08,788 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 182 [2022-11-23 14:04:08,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:08,790 INFO L225 Difference]: With dead ends: 277 [2022-11-23 14:04:08,790 INFO L226 Difference]: Without dead ends: 251 [2022-11-23 14:04:08,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-11-23 14:04:08,795 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 64 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:08,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 645 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:04:08,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-11-23 14:04:08,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 225. [2022-11-23 14:04:08,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 215 states have (on average 1.041860465116279) internal successors, (224), 216 states have internal predecessors, (224), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-23 14:04:08,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 236 transitions. [2022-11-23 14:04:08,897 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 236 transitions. Word has length 182 [2022-11-23 14:04:08,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:08,898 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 236 transitions. [2022-11-23 14:04:08,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 14:04:08,898 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 236 transitions. [2022-11-23 14:04:08,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-11-23 14:04:08,901 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:08,901 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:08,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 (42)] Ended with exit code 0 [2022-11-23 14:04:09,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:04:09,117 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 14:04:09,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:09,118 INFO L85 PathProgramCache]: Analyzing trace with hash 520224363, now seen corresponding path program 1 times [2022-11-23 14:04:09,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:04:09,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557843244] [2022-11-23 14:04:09,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:09,119 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 [2022-11-23 14:04:09,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:04:09,120 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 14:04:09,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 (43)] Waiting until timeout for monitored process [2022-11-23 14:04:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:09,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-23 14:04:09,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:04:09,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1418 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1409 trivial. 0 not checked. [2022-11-23 14:04:09,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:04:09,864 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:04:09,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1557843244] [2022-11-23 14:04:09,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1557843244] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:04:09,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1814032236] [2022-11-23 14:04:09,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:09,865 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 14:04:09,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 14:04:09,868 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 14:04:09,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (44)] Waiting until timeout for monitored process [2022-11-23 14:04:10,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:10,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 14:04:10,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:04:10,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1418 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1409 trivial. 0 not checked. [2022-11-23 14:04:10,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:04:10,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1418 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1409 trivial. 0 not checked. [2022-11-23 14:04:10,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1814032236] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:04:10,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248265244] [2022-11-23 14:04:10,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:10,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:04:10,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:04:10,188 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:04:10,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-11-23 14:04:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:10,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 14:04:10,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:04:10,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1418 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1409 trivial. 0 not checked. [2022-11-23 14:04:10,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:04:10,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1418 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1409 trivial. 0 not checked. [2022-11-23 14:04:10,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248265244] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:04:10,493 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-11-23 14:04:10,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7] total 7 [2022-11-23 14:04:10,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168346009] [2022-11-23 14:04:10,494 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-11-23 14:04:10,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:04:10,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:04:10,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:04:10,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-11-23 14:04:10,496 INFO L87 Difference]: Start difference. First operand 225 states and 236 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 14:04:10,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:10,698 INFO L93 Difference]: Finished difference Result 271 states and 283 transitions. [2022-11-23 14:04:10,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:04:10,699 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 184 [2022-11-23 14:04:10,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:10,701 INFO L225 Difference]: With dead ends: 271 [2022-11-23 14:04:10,701 INFO L226 Difference]: Without dead ends: 251 [2022-11-23 14:04:10,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 939 GetRequests, 925 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-23 14:04:10,702 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 45 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:10,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 445 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:04:10,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-11-23 14:04:10,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 231. [2022-11-23 14:04:10,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 221 states have (on average 1.0407239819004526) internal successors, (230), 221 states have internal predecessors, (230), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-23 14:04:10,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 242 transitions. [2022-11-23 14:04:10,778 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 242 transitions. Word has length 184 [2022-11-23 14:04:10,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:10,779 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 242 transitions. [2022-11-23 14:04:10,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 14:04:10,779 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 242 transitions. [2022-11-23 14:04:10,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-11-23 14:04:10,781 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:10,781 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:10,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 (43)] Forceful destruction successful, exit code 0 [2022-11-23 14:04:11,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-11-23 14:04:11,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (44)] Forceful destruction successful, exit code 0 [2022-11-23 14:04:11,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt [2022-11-23 14:04:11,398 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 14:04:11,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:11,398 INFO L85 PathProgramCache]: Analyzing trace with hash -500843991, now seen corresponding path program 1 times [2022-11-23 14:04:11,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:04:11,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [745751139] [2022-11-23 14:04:11,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:11,399 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 [2022-11-23 14:04:11,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:04:11,401 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 14:04:11,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 (46)] Waiting until timeout for monitored process [2022-11-23 14:04:11,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:11,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:04:11,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:04:11,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1418 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1418 trivial. 0 not checked. [2022-11-23 14:04:11,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:04:11,597 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:04:11,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [745751139] [2022-11-23 14:04:11,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [745751139] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:11,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:11,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:04:11,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105526258] [2022-11-23 14:04:11,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:11,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:04:11,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:04:11,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:04:11,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:04:11,599 INFO L87 Difference]: Start difference. First operand 231 states and 242 transitions. Second operand has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 14:04:11,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:11,777 INFO L93 Difference]: Finished difference Result 235 states and 245 transitions. [2022-11-23 14:04:11,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:04:11,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 184 [2022-11-23 14:04:11,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:11,779 INFO L225 Difference]: With dead ends: 235 [2022-11-23 14:04:11,779 INFO L226 Difference]: Without dead ends: 231 [2022-11-23 14:04:11,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:04:11,780 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 10 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:11,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 151 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:04:11,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-23 14:04:11,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2022-11-23 14:04:11,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 221 states have (on average 1.0361990950226245) internal successors, (229), 221 states have internal predecessors, (229), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-23 14:04:11,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 241 transitions. [2022-11-23 14:04:11,856 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 241 transitions. Word has length 184 [2022-11-23 14:04:11,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:11,857 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 241 transitions. [2022-11-23 14:04:11,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 14:04:11,857 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 241 transitions. [2022-11-23 14:04:11,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-23 14:04:11,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:11,859 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:11,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 (46)] Forceful destruction successful, exit code 0 [2022-11-23 14:04:12,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:04:12,076 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 14:04:12,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:12,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1118208338, now seen corresponding path program 1 times [2022-11-23 14:04:12,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:04:12,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037234394] [2022-11-23 14:04:12,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:12,077 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 [2022-11-23 14:04:12,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:04:12,079 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 14:04:12,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 (47)] Waiting until timeout for monitored process [2022-11-23 14:04:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:12,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:04:12,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:04:12,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1418 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1418 trivial. 0 not checked. [2022-11-23 14:04:12,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:04:12,327 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:04:12,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037234394] [2022-11-23 14:04:12,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037234394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:12,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:12,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:04:12,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378509969] [2022-11-23 14:04:12,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:12,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:04:12,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:04:12,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:04:12,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:04:12,329 INFO L87 Difference]: Start difference. First operand 231 states and 241 transitions. Second operand has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 14:04:12,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:12,583 INFO L93 Difference]: Finished difference Result 231 states and 241 transitions. [2022-11-23 14:04:12,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:04:12,584 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 188 [2022-11-23 14:04:12,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:12,585 INFO L225 Difference]: With dead ends: 231 [2022-11-23 14:04:12,585 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 14:04:12,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:04:12,586 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 9 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:12,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 147 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:04:12,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 14:04:12,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 14:04:12,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:04:12,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 14:04:12,588 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 188 [2022-11-23 14:04:12,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:12,588 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 14:04:12,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 14:04:12,588 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 14:04:12,588 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 14:04:12,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2022-11-23 14:04:12,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-11-23 14:04:12,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-11-23 14:04:12,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-11-23 14:04:12,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-11-23 14:04:12,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-11-23 14:04:12,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-11-23 14:04:12,607 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-11-23 14:04:12,607 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2022-11-23 14:04:12,607 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2022-11-23 14:04:12,607 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-11-23 14:04:12,608 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-11-23 14:04:12,608 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-11-23 14:04:12,608 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-11-23 14:04:12,608 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-11-23 14:04:12,608 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-11-23 14:04:12,609 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-11-23 14:04:12,609 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-11-23 14:04:12,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 (47)] Forceful destruction successful, exit code 0 [2022-11-23 14:04:12,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625cabb6-aa26-425e-882d-be9f291e2ff5/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:04:12,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.