./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aff0e850a0570cb9360bb6d36c5ca43ce702912f0a3611fc5fda11d0dcbb5bf1 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:56:40,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:56:40,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:56:40,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:56:40,094 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:56:40,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:56:40,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:56:40,106 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:56:40,108 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:56:40,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:56:40,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:56:40,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:56:40,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:56:40,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:56:40,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:56:40,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:56:40,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:56:40,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:56:40,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:56:40,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:56:40,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:56:40,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:56:40,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:56:40,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:56:40,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:56:40,160 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:56:40,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:56:40,162 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:56:40,163 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:56:40,164 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:56:40,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:56:40,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:56:40,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:56:40,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:56:40,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:56:40,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:56:40,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:56:40,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:56:40,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:56:40,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:56:40,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:56:40,174 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 18:56:40,225 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:56:40,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:56:40,226 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:56:40,226 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:56:40,227 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:56:40,227 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:56:40,227 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:56:40,228 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:56:40,228 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:56:40,228 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:56:40,229 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:56:40,229 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:56:40,230 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:56:40,230 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:56:40,230 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:56:40,230 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:56:40,231 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:56:40,231 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:56:40,231 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:56:40,232 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:56:40,232 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:56:40,232 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:56:40,232 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:56:40,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:56:40,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:56:40,233 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:56:40,233 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:56:40,234 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:56:40,234 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:56:40,234 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:56:40,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:56:40,235 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:56:40,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:56:40,235 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:56:40,235 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:56:40,236 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:56:40,236 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:56:40,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:56:40,236 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:56:40,237 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:56:40,237 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:56:40,237 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aff0e850a0570cb9360bb6d36c5ca43ce702912f0a3611fc5fda11d0dcbb5bf1 [2021-11-25 18:56:40,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:56:40,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:56:40,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:56:40,549 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:56:40,550 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:56:40,551 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c [2021-11-25 18:56:40,628 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/data/4910fa1a2/2e0266d704014f619d70fc1ca14b30de/FLAG7d1040b3f [2021-11-25 18:56:41,146 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:56:41,147 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c [2021-11-25 18:56:41,155 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/data/4910fa1a2/2e0266d704014f619d70fc1ca14b30de/FLAG7d1040b3f [2021-11-25 18:56:41,485 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/data/4910fa1a2/2e0266d704014f619d70fc1ca14b30de [2021-11-25 18:56:41,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:56:41,494 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:56:41,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:56:41,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:56:41,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:56:41,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:56:41" (1/1) ... [2021-11-25 18:56:41,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f171f28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:41, skipping insertion in model container [2021-11-25 18:56:41,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:56:41" (1/1) ... [2021-11-25 18:56:41,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:56:41,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:56:41,761 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c[1995,2008] [2021-11-25 18:56:41,766 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c[2364,2377] [2021-11-25 18:56:41,802 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:56:41,810 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:56:41,825 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c[1995,2008] [2021-11-25 18:56:41,834 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c[2364,2377] [2021-11-25 18:56:41,873 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:56:41,905 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:56:41,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:41 WrapperNode [2021-11-25 18:56:41,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:56:41,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:56:41,907 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:56:41,907 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:56:41,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:41" (1/1) ... [2021-11-25 18:56:41,924 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:41" (1/1) ... [2021-11-25 18:56:41,948 INFO L137 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 133 [2021-11-25 18:56:41,948 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:56:41,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:56:41,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:56:41,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:56:41,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:41" (1/1) ... [2021-11-25 18:56:41,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:41" (1/1) ... [2021-11-25 18:56:41,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:41" (1/1) ... [2021-11-25 18:56:41,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:41" (1/1) ... [2021-11-25 18:56:41,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:41" (1/1) ... [2021-11-25 18:56:41,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:41" (1/1) ... [2021-11-25 18:56:41,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:41" (1/1) ... [2021-11-25 18:56:42,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:56:42,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:56:42,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:56:42,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:56:42,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:41" (1/1) ... [2021-11-25 18:56:42,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:56:42,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:56:42,042 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:56:42,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:56:42,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:56:42,090 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-25 18:56:42,090 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-25 18:56:42,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:56:42,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:56:42,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:56:42,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 18:56:42,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 18:56:42,198 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:56:42,199 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:56:42,494 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:56:42,594 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:56:42,595 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-25 18:56:42,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:56:42 BoogieIcfgContainer [2021-11-25 18:56:42,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:56:42,600 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:56:42,600 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:56:42,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:56:42,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:56:41" (1/3) ... [2021-11-25 18:56:42,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6442949f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:56:42, skipping insertion in model container [2021-11-25 18:56:42,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:41" (2/3) ... [2021-11-25 18:56:42,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6442949f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:56:42, skipping insertion in model container [2021-11-25 18:56:42,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:56:42" (3/3) ... [2021-11-25 18:56:42,614 INFO L111 eAbstractionObserver]: Analyzing ICFG square_7+soft_float_5a.c.cil.c [2021-11-25 18:56:42,619 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:56:42,620 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-25 18:56:42,668 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:56:42,689 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:56:42,689 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-25 18:56:42,712 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 38 states have internal predecessors, (55), 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) [2021-11-25 18:56:42,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 18:56:42,716 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:42,717 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 18:56:42,717 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:56:42,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:42,723 INFO L85 PathProgramCache]: Analyzing trace with hash 7146571, now seen corresponding path program 1 times [2021-11-25 18:56:42,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:56:42,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221856181] [2021-11-25 18:56:42,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:42,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:42,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 18:56:42,829 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 18:56:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 18:56:42,863 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 18:56:42,866 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 18:56:42,868 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-25 18:56:42,870 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-25 18:56:42,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:56:42,874 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-25 18:56:42,877 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 18:56:42,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:56:42 BoogieIcfgContainer [2021-11-25 18:56:42,900 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 18:56:42,904 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 18:56:42,904 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 18:56:42,904 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 18:56:42,905 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:56:42" (3/4) ... [2021-11-25 18:56:42,908 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-25 18:56:42,908 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 18:56:42,909 INFO L158 Benchmark]: Toolchain (without parser) took 1415.10ms. Allocated memory was 88.1MB in the beginning and 121.6MB in the end (delta: 33.6MB). Free memory was 53.6MB in the beginning and 60.4MB in the end (delta: -6.8MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. [2021-11-25 18:56:42,910 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 88.1MB. Free memory was 60.2MB in the beginning and 60.1MB in the end (delta: 29.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:56:42,911 INFO L158 Benchmark]: CACSL2BoogieTranslator took 411.14ms. Allocated memory was 88.1MB in the beginning and 121.6MB in the end (delta: 33.6MB). Free memory was 53.4MB in the beginning and 94.4MB in the end (delta: -41.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 18:56:42,912 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.50ms. Allocated memory is still 121.6MB. Free memory was 94.4MB in the beginning and 92.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:56:42,918 INFO L158 Benchmark]: Boogie Preprocessor took 62.73ms. Allocated memory is still 121.6MB. Free memory was 92.4MB in the beginning and 90.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:56:42,919 INFO L158 Benchmark]: RCFGBuilder took 585.21ms. Allocated memory is still 121.6MB. Free memory was 90.9MB in the beginning and 74.1MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-25 18:56:42,920 INFO L158 Benchmark]: TraceAbstraction took 300.82ms. Allocated memory is still 121.6MB. Free memory was 74.1MB in the beginning and 61.0MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 18:56:42,920 INFO L158 Benchmark]: Witness Printer took 3.90ms. Allocated memory is still 121.6MB. Free memory was 61.0MB in the beginning and 60.4MB in the end (delta: 567.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:56:42,929 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 88.1MB. Free memory was 60.2MB in the beginning and 60.1MB in the end (delta: 29.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 411.14ms. Allocated memory was 88.1MB in the beginning and 121.6MB in the end (delta: 33.6MB). Free memory was 53.4MB in the beginning and 94.4MB in the end (delta: -41.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.50ms. Allocated memory is still 121.6MB. Free memory was 94.4MB in the beginning and 92.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.73ms. Allocated memory is still 121.6MB. Free memory was 92.4MB in the beginning and 90.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 585.21ms. Allocated memory is still 121.6MB. Free memory was 90.9MB in the beginning and 74.1MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 300.82ms. Allocated memory is still 121.6MB. Free memory was 74.1MB in the beginning and 61.0MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 3.90ms. Allocated memory is still 121.6MB. Free memory was 61.0MB in the beginning and 60.4MB in the end (delta: 567.5kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L322] COND TRUE __VERIFIER_nondet_int() [L323] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=49, x=49] [L47] COND TRUE !(result >= 0.0f && result < 1.4f) VAL [IN=49, x=49] [L48] reach_error() VAL [IN=49, x=49] - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 45 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-25 18:56:42,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aff0e850a0570cb9360bb6d36c5ca43ce702912f0a3611fc5fda11d0dcbb5bf1 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:56:45,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:56:45,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:56:45,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:56:45,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:56:45,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:56:45,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:56:45,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:56:45,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:56:45,520 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:56:45,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:56:45,522 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:56:45,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:56:45,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:56:45,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:56:45,531 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:56:45,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:56:45,534 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:56:45,539 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:56:45,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:56:45,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:56:45,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:56:45,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:56:45,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:56:45,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:56:45,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:56:45,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:56:45,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:56:45,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:56:45,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:56:45,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:56:45,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:56:45,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:56:45,573 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:56:45,574 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:56:45,575 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:56:45,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:56:45,576 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:56:45,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:56:45,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:56:45,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:56:45,580 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-25 18:56:45,625 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:56:45,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:56:45,626 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:56:45,626 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:56:45,627 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:56:45,627 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:56:45,628 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:56:45,628 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:56:45,628 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:56:45,628 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:56:45,629 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:56:45,630 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:56:45,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:56:45,631 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:56:45,631 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:56:45,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:56:45,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:56:45,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:56:45,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:56:45,633 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 18:56:45,633 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 18:56:45,633 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 18:56:45,633 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:56:45,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:56:45,634 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:56:45,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:56:45,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:56:45,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 18:56:45,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:56:45,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:56:45,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:56:45,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:56:45,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:56:45,636 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 18:56:45,636 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 18:56:45,637 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:56:45,637 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:56:45,637 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:56:45,637 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_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aff0e850a0570cb9360bb6d36c5ca43ce702912f0a3611fc5fda11d0dcbb5bf1 [2021-11-25 18:56:46,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:56:46,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:56:46,071 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:56:46,072 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:56:46,075 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:56:46,076 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c [2021-11-25 18:56:46,148 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/data/2911dbe8a/af45521c29ad425cb486b11033b37837/FLAG11389e202 [2021-11-25 18:56:46,733 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:56:46,733 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c [2021-11-25 18:56:46,747 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/data/2911dbe8a/af45521c29ad425cb486b11033b37837/FLAG11389e202 [2021-11-25 18:56:47,051 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/data/2911dbe8a/af45521c29ad425cb486b11033b37837 [2021-11-25 18:56:47,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:56:47,055 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:56:47,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:56:47,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:56:47,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:56:47,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:56:47" (1/1) ... [2021-11-25 18:56:47,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@531aaaef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:47, skipping insertion in model container [2021-11-25 18:56:47,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:56:47" (1/1) ... [2021-11-25 18:56:47,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:56:47,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:56:47,285 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c[1995,2008] [2021-11-25 18:56:47,309 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c[2364,2377] [2021-11-25 18:56:47,392 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:56:47,403 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:56:47,419 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c[1995,2008] [2021-11-25 18:56:47,421 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c[2364,2377] [2021-11-25 18:56:47,448 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:56:47,463 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:56:47,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:47 WrapperNode [2021-11-25 18:56:47,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:56:47,465 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:56:47,465 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:56:47,466 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:56:47,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:47" (1/1) ... [2021-11-25 18:56:47,485 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:47" (1/1) ... [2021-11-25 18:56:47,511 INFO L137 Inliner]: procedures = 28, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 129 [2021-11-25 18:56:47,511 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:56:47,512 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:56:47,512 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:56:47,512 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:56:47,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:47" (1/1) ... [2021-11-25 18:56:47,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:47" (1/1) ... [2021-11-25 18:56:47,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:47" (1/1) ... [2021-11-25 18:56:47,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:47" (1/1) ... [2021-11-25 18:56:47,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:47" (1/1) ... [2021-11-25 18:56:47,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:47" (1/1) ... [2021-11-25 18:56:47,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:47" (1/1) ... [2021-11-25 18:56:47,548 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:56:47,549 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:56:47,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:56:47,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:56:47,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:47" (1/1) ... [2021-11-25 18:56:47,567 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:56:47,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:56:47,605 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:56:47,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:56:47,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:56:47,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 18:56:47,656 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-25 18:56:47,656 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-25 18:56:47,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:56:47,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:56:47,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 18:56:47,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 18:56:47,794 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:56:47,796 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:56:50,250 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:56:50,257 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:56:50,257 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-25 18:56:50,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:56:50 BoogieIcfgContainer [2021-11-25 18:56:50,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:56:50,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:56:50,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:56:50,264 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:56:50,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:56:47" (1/3) ... [2021-11-25 18:56:50,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4920b22c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:56:50, skipping insertion in model container [2021-11-25 18:56:50,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:47" (2/3) ... [2021-11-25 18:56:50,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4920b22c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:56:50, skipping insertion in model container [2021-11-25 18:56:50,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:56:50" (3/3) ... [2021-11-25 18:56:50,267 INFO L111 eAbstractionObserver]: Analyzing ICFG square_7+soft_float_5a.c.cil.c [2021-11-25 18:56:50,272 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:56:50,272 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-25 18:56:50,312 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:56:50,317 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:56:50,318 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-25 18:56:50,335 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 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) [2021-11-25 18:56:50,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 18:56:50,339 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:50,340 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:56:50,341 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:56:50,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:50,346 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-11-25 18:56:50,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:56:50,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [287781701] [2021-11-25 18:56:50,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:50,360 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:56:50,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:56:50,379 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:56:50,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 18:56:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:51,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-25 18:56:51,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:56:51,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:56:51,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:56:51,088 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:56:51,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [287781701] [2021-11-25 18:56:51,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [287781701] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:56:51,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:56:51,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:56:51,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483551633] [2021-11-25 18:56:51,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:56:51,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 18:56:51,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:56:51,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 18:56:51,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 18:56:51,125 INFO L87 Difference]: Start difference. First operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:51,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:56:51,154 INFO L93 Difference]: Finished difference Result 117 states and 175 transitions. [2021-11-25 18:56:51,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 18:56:51,156 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-25 18:56:51,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:56:51,164 INFO L225 Difference]: With dead ends: 117 [2021-11-25 18:56:51,164 INFO L226 Difference]: Without dead ends: 52 [2021-11-25 18:56:51,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 18:56:51,172 INFO L933 BasicCegarLoop]: 82 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, 82 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:56:51,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:56:51,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-25 18:56:51,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-11-25 18:56:51,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 45 states have internal predecessors, (62), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-25 18:56:51,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2021-11-25 18:56:51,215 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 7 [2021-11-25 18:56:51,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:56:51,215 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2021-11-25 18:56:51,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:51,229 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2021-11-25 18:56:51,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 18:56:51,230 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:51,230 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:56:51,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:56:51,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:56:51,452 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:56:51,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:51,453 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-11-25 18:56:51,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:56:51,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [742479105] [2021-11-25 18:56:51,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:51,454 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:56:51,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:56:51,458 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:56:51,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 19:07:39,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:07:39,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 19:07:39,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:07:54,649 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0) (= |c_ULTIMATE.start_main1_~result~0#1| (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-25 19:08:44,827 WARN L838 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (let ((.cse0 (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)))) (or (not (fp.lt .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 7.0 5.0)))) (not (fp.geq .cse0 (_ +zero 8 24))))) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse1)))) is different from false [2021-11-25 19:08:46,875 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (let ((.cse0 (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)))) (or (not (fp.lt .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 7.0 5.0)))) (not (fp.geq .cse0 (_ +zero 8 24))))) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse1)))) is different from true [2021-11-25 19:08:46,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:08:46,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:08:46,876 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:08:46,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [742479105] [2021-11-25 19:08:46,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [742479105] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:08:46,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:08:46,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:08:46,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137019083] [2021-11-25 19:08:46,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:08:46,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:08:46,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:08:46,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:08:46,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42 [2021-11-25 19:08:46,881 INFO L87 Difference]: Start difference. First operand 52 states and 71 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:08:49,248 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 19:08:49,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:08:49,442 INFO L93 Difference]: Finished difference Result 52 states and 71 transitions. [2021-11-25 19:08:49,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:08:49,446 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-25 19:08:49,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:08:49,447 INFO L225 Difference]: With dead ends: 52 [2021-11-25 19:08:49,447 INFO L226 Difference]: Without dead ends: 47 [2021-11-25 19:08:49,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=18, Invalid=17, Unknown=3, NotChecked=18, Total=56 [2021-11-25 19:08:49,449 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 67 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:08:49,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 178 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 1 Unknown, 137 Unchecked, 2.4s Time] [2021-11-25 19:08:49,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-25 19:08:49,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-11-25 19:08:49,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 40 states have (on average 1.425) internal successors, (57), 40 states have internal predecessors, (57), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-25 19:08:49,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 66 transitions. [2021-11-25 19:08:49,464 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 66 transitions. Word has length 7 [2021-11-25 19:08:49,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:08:49,465 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 66 transitions. [2021-11-25 19:08:49,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:08:49,465 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 66 transitions. [2021-11-25 19:08:49,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-25 19:08:49,470 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:08:49,470 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:08:49,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-25 19:08:49,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:08:49,685 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:08:49,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:08:49,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1370969986, now seen corresponding path program 1 times [2021-11-25 19:08:49,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:08:49,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480271125] [2021-11-25 19:08:49,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:08:49,688 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:08:49,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:08:49,691 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:08:49,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-25 19:08:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:08:49,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:08:49,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:08:50,082 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:08:50,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:08:50,082 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:08:50,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480271125] [2021-11-25 19:08:50,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480271125] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:08:50,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:08:50,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:08:50,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143851855] [2021-11-25 19:08:50,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:08:50,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:08:50,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:08:50,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:08:50,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:08:50,086 INFO L87 Difference]: Start difference. First operand 47 states and 66 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:08:50,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:08:50,359 INFO L93 Difference]: Finished difference Result 104 states and 150 transitions. [2021-11-25 19:08:50,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:08:50,360 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2021-11-25 19:08:50,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:08:50,364 INFO L225 Difference]: With dead ends: 104 [2021-11-25 19:08:50,364 INFO L226 Difference]: Without dead ends: 61 [2021-11-25 19:08:50,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:08:50,366 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 16 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:08:50,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 146 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:08:50,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-25 19:08:50,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 52. [2021-11-25 19:08:50,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.3863636363636365) internal successors, (61), 44 states have internal predecessors, (61), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-25 19:08:50,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 72 transitions. [2021-11-25 19:08:50,381 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 72 transitions. Word has length 43 [2021-11-25 19:08:50,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:08:50,381 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 72 transitions. [2021-11-25 19:08:50,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:08:50,382 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 72 transitions. [2021-11-25 19:08:50,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-25 19:08:50,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:08:50,384 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1] [2021-11-25 19:08:50,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-25 19:08:50,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:08:50,598 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:08:50,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:08:50,599 INFO L85 PathProgramCache]: Analyzing trace with hash -14997806, now seen corresponding path program 1 times [2021-11-25 19:08:50,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:08:50,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579270015] [2021-11-25 19:08:50,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:08:50,600 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:08:50,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:08:50,601 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:08:50,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-25 19:08:50,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:08:50,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:08:50,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:08:50,977 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:08:50,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:08:50,978 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:08:50,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1579270015] [2021-11-25 19:08:50,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1579270015] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:08:50,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:08:50,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:08:50,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633335336] [2021-11-25 19:08:50,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:08:50,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:08:50,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:08:50,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:08:50,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:08:50,981 INFO L87 Difference]: Start difference. First operand 52 states and 72 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:08:51,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:08:51,206 INFO L93 Difference]: Finished difference Result 108 states and 153 transitions. [2021-11-25 19:08:51,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:08:51,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2021-11-25 19:08:51,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:08:51,209 INFO L225 Difference]: With dead ends: 108 [2021-11-25 19:08:51,209 INFO L226 Difference]: Without dead ends: 64 [2021-11-25 19:08:51,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:08:51,212 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 10 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:08:51,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 160 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:08:51,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-25 19:08:51,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2021-11-25 19:08:51,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 48 states have (on average 1.375) internal successors, (66), 49 states have internal predecessors, (66), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-25 19:08:51,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 79 transitions. [2021-11-25 19:08:51,227 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 79 transitions. Word has length 46 [2021-11-25 19:08:51,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:08:51,227 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 79 transitions. [2021-11-25 19:08:51,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:08:51,228 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 79 transitions. [2021-11-25 19:08:51,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-25 19:08:51,230 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:08:51,231 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2021-11-25 19:08:51,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-25 19:08:51,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:08:51,437 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:08:51,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:08:51,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1638472845, now seen corresponding path program 1 times [2021-11-25 19:08:51,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:08:51,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [726028331] [2021-11-25 19:08:51,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:08:51,439 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:08:51,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:08:51,440 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:08:51,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-25 19:08:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:08:51,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:08:51,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:08:51,825 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:08:51,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:08:51,826 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:08:51,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [726028331] [2021-11-25 19:08:51,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [726028331] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:08:51,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:08:51,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:08:51,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746300755] [2021-11-25 19:08:51,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:08:51,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:08:51,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:08:51,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:08:51,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:08:51,829 INFO L87 Difference]: Start difference. First operand 57 states and 79 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:08:52,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:08:52,110 INFO L93 Difference]: Finished difference Result 117 states and 165 transitions. [2021-11-25 19:08:52,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:08:52,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2021-11-25 19:08:52,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:08:52,112 INFO L225 Difference]: With dead ends: 117 [2021-11-25 19:08:52,113 INFO L226 Difference]: Without dead ends: 68 [2021-11-25 19:08:52,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:08:52,114 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 16 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:08:52,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 153 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:08:52,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-25 19:08:52,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 58. [2021-11-25 19:08:52,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 50 states have internal predecessors, (67), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-25 19:08:52,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 80 transitions. [2021-11-25 19:08:52,127 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 80 transitions. Word has length 47 [2021-11-25 19:08:52,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:08:52,127 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 80 transitions. [2021-11-25 19:08:52,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:08:52,128 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 80 transitions. [2021-11-25 19:08:52,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-25 19:08:52,129 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:08:52,130 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-11-25 19:08:52,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-25 19:08:52,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:08:52,343 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:08:52,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:08:52,344 INFO L85 PathProgramCache]: Analyzing trace with hash 388661875, now seen corresponding path program 1 times [2021-11-25 19:08:52,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:08:52,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [159779435] [2021-11-25 19:08:52,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:08:52,344 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:08:52,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:08:52,345 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:08:52,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-25 19:08:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:08:52,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:08:52,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:08:52,728 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:08:52,729 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:08:52,729 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:08:52,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [159779435] [2021-11-25 19:08:52,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [159779435] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:08:52,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:08:52,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:08:52,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820798904] [2021-11-25 19:08:52,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:08:52,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:08:52,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:08:52,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:08:52,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:08:52,731 INFO L87 Difference]: Start difference. First operand 58 states and 80 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:08:53,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:08:53,196 INFO L93 Difference]: Finished difference Result 125 states and 176 transitions. [2021-11-25 19:08:53,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:08:53,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2021-11-25 19:08:53,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:08:53,198 INFO L225 Difference]: With dead ends: 125 [2021-11-25 19:08:53,198 INFO L226 Difference]: Without dead ends: 75 [2021-11-25 19:08:53,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:08:53,200 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 19 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:08:53,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 202 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:08:53,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-11-25 19:08:53,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 59. [2021-11-25 19:08:53,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 50 states have (on average 1.38) internal successors, (69), 51 states have internal predecessors, (69), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-25 19:08:53,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 82 transitions. [2021-11-25 19:08:53,220 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 82 transitions. Word has length 48 [2021-11-25 19:08:53,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:08:53,221 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 82 transitions. [2021-11-25 19:08:53,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:08:53,221 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 82 transitions. [2021-11-25 19:08:53,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-25 19:08:53,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:08:53,223 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2021-11-25 19:08:53,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-25 19:08:53,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:08:53,424 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:08:53,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:08:53,424 INFO L85 PathProgramCache]: Analyzing trace with hash 933318672, now seen corresponding path program 1 times [2021-11-25 19:08:53,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:08:53,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404975307] [2021-11-25 19:08:53,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:08:53,425 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:08:53,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:08:53,426 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:08:53,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-25 19:08:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:08:53,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:08:53,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:08:53,841 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:08:53,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:08:54,416 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:08:54,416 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:08:54,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404975307] [2021-11-25 19:08:54,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404975307] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:08:54,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1350581543] [2021-11-25 19:08:54,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:08:54,417 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:08:54,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:08:54,425 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:08:54,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-25 19:08:54,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:08:54,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:08:54,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:08:54,701 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-25 19:08:54,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:08:54,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1350581543] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:08:54,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:08:54,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2021-11-25 19:08:54,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686254534] [2021-11-25 19:08:54,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:08:54,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:08:54,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:08:54,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:08:54,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-25 19:08:54,704 INFO L87 Difference]: Start difference. First operand 59 states and 82 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:08:54,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:08:54,731 INFO L93 Difference]: Finished difference Result 79 states and 110 transitions. [2021-11-25 19:08:54,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:08:54,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 49 [2021-11-25 19:08:54,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:08:54,734 INFO L225 Difference]: With dead ends: 79 [2021-11-25 19:08:54,734 INFO L226 Difference]: Without dead ends: 59 [2021-11-25 19:08:54,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-25 19:08:54,735 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 13 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:08:54,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 128 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:08:54,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-25 19:08:54,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-11-25 19:08:54,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 50 states have (on average 1.36) internal successors, (68), 51 states have internal predecessors, (68), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-25 19:08:54,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 81 transitions. [2021-11-25 19:08:54,746 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 81 transitions. Word has length 49 [2021-11-25 19:08:54,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:08:54,746 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 81 transitions. [2021-11-25 19:08:54,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:08:54,747 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 81 transitions. [2021-11-25 19:08:54,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-25 19:08:54,749 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:08:54,749 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2021-11-25 19:08:54,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-25 19:08:54,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-25 19:08:55,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:08:55,151 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:08:55,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:08:55,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1543994934, now seen corresponding path program 1 times [2021-11-25 19:08:55,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:08:55,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1105316659] [2021-11-25 19:08:55,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:08:55,153 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:08:55,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:08:55,154 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:08:55,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-25 19:08:55,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:08:55,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:08:55,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:08:55,566 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:08:55,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:08:56,101 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:08:56,101 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:08:56,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1105316659] [2021-11-25 19:08:56,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1105316659] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:08:56,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [457860580] [2021-11-25 19:08:56,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:08:56,102 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:08:56,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:08:56,104 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:08:56,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-25 19:08:56,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:08:56,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 19:08:56,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:08:56,404 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-25 19:08:56,404 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:08:56,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [457860580] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:08:56,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:08:56,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2021-11-25 19:08:56,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80636145] [2021-11-25 19:08:56,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:08:56,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:08:56,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:08:56,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:08:56,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-25 19:08:56,406 INFO L87 Difference]: Start difference. First operand 59 states and 81 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:08:56,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:08:56,492 INFO L93 Difference]: Finished difference Result 80 states and 110 transitions. [2021-11-25 19:08:56,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:08:56,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 51 [2021-11-25 19:08:56,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:08:56,503 INFO L225 Difference]: With dead ends: 80 [2021-11-25 19:08:56,503 INFO L226 Difference]: Without dead ends: 59 [2021-11-25 19:08:56,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-25 19:08:56,505 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 32 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:08:56,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 187 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:08:56,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-25 19:08:56,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-11-25 19:08:56,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 50 states have (on average 1.34) internal successors, (67), 51 states have internal predecessors, (67), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-25 19:08:56,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 80 transitions. [2021-11-25 19:08:56,515 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 80 transitions. Word has length 51 [2021-11-25 19:08:56,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:08:56,515 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 80 transitions. [2021-11-25 19:08:56,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:08:56,516 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 80 transitions. [2021-11-25 19:08:56,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-25 19:08:56,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:08:56,518 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2021-11-25 19:08:56,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-25 19:08:56,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-25 19:08:56,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:08:56,932 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:08:56,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:08:56,933 INFO L85 PathProgramCache]: Analyzing trace with hash -2130800948, now seen corresponding path program 1 times [2021-11-25 19:08:56,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:08:56,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1012456589] [2021-11-25 19:08:56,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:08:56,934 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:08:56,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:08:56,935 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:08:56,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-25 19:08:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:08:56,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:08:56,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:08:57,307 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:08:57,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:08:57,868 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:08:57,868 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:08:57,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1012456589] [2021-11-25 19:08:57,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1012456589] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:08:57,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [557478333] [2021-11-25 19:08:57,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:08:57,869 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:08:57,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:08:57,872 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:08:57,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-25 19:08:57,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:08:57,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 19:08:57,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:08:58,445 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-25 19:08:58,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:08:58,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [557478333] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:08:58,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:08:58,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 5] total 13 [2021-11-25 19:08:58,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769916425] [2021-11-25 19:08:58,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:08:58,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:08:58,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:08:58,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:08:58,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-11-25 19:08:58,449 INFO L87 Difference]: Start difference. First operand 59 states and 80 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:08:58,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:08:58,810 INFO L93 Difference]: Finished difference Result 104 states and 141 transitions. [2021-11-25 19:08:58,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:08:58,811 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 51 [2021-11-25 19:08:58,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:08:58,813 INFO L225 Difference]: With dead ends: 104 [2021-11-25 19:08:58,813 INFO L226 Difference]: Without dead ends: 86 [2021-11-25 19:08:58,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-11-25 19:08:58,814 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 31 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:08:58,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 335 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:08:58,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-25 19:08:58,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 72. [2021-11-25 19:08:58,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 61 states have (on average 1.278688524590164) internal successors, (78), 63 states have internal predecessors, (78), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-25 19:08:58,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 96 transitions. [2021-11-25 19:08:58,837 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 96 transitions. Word has length 51 [2021-11-25 19:08:58,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:08:58,838 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 96 transitions. [2021-11-25 19:08:58,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:08:58,838 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 96 transitions. [2021-11-25 19:08:58,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-25 19:08:58,841 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:08:58,841 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2021-11-25 19:08:58,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-25 19:08:59,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-25 19:08:59,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:08:59,242 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:08:59,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:08:59,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1771139338, now seen corresponding path program 1 times [2021-11-25 19:08:59,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:08:59,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [248925237] [2021-11-25 19:08:59,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:08:59,243 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:08:59,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:08:59,244 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:08:59,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-25 19:08:59,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:08:59,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:08:59,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:08:59,623 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:08:59,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:09:00,182 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:09:00,182 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:09:00,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [248925237] [2021-11-25 19:09:00,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [248925237] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:09:00,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1276363699] [2021-11-25 19:09:00,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:00,183 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:09:00,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:09:00,189 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:09:00,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-25 19:09:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:09:00,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 19:09:00,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:09:00,836 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-25 19:09:00,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:09:01,185 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-25 19:09:01,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1276363699] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:09:01,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132907404] [2021-11-25 19:09:01,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:01,185 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:09:01,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:09:01,193 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:09:01,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-25 19:09:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:09:01,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 19:09:01,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:09:01,501 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-25 19:09:01,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:09:01,876 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-25 19:09:01,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132907404] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:09:01,876 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:09:01,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6, 6, 6, 6] total 12 [2021-11-25 19:09:01,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244902598] [2021-11-25 19:09:01,877 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:09:01,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 19:09:01,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:09:01,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 19:09:01,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-25 19:09:01,879 INFO L87 Difference]: Start difference. First operand 72 states and 96 transitions. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 11 states have internal predecessors, (71), 3 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 19:09:03,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:09:03,677 INFO L93 Difference]: Finished difference Result 172 states and 235 transitions. [2021-11-25 19:09:03,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-25 19:09:03,678 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 11 states have internal predecessors, (71), 3 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 51 [2021-11-25 19:09:03,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:09:03,679 INFO L225 Difference]: With dead ends: 172 [2021-11-25 19:09:03,680 INFO L226 Difference]: Without dead ends: 108 [2021-11-25 19:09:03,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2021-11-25 19:09:03,682 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 69 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:09:03,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 487 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 19:09:03,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-11-25 19:09:03,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 80. [2021-11-25 19:09:03,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 69 states have (on average 1.3043478260869565) internal successors, (90), 71 states have internal predecessors, (90), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-25 19:09:03,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 108 transitions. [2021-11-25 19:09:03,699 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 108 transitions. Word has length 51 [2021-11-25 19:09:03,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:09:03,700 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 108 transitions. [2021-11-25 19:09:03,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 11 states have internal predecessors, (71), 3 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 19:09:03,700 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 108 transitions. [2021-11-25 19:09:03,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-25 19:09:03,701 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:09:03,702 INFO L514 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:09:03,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-25 19:09:03,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-25 19:09:04,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-25 19:09:04,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:09:04,304 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:09:04,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:09:04,304 INFO L85 PathProgramCache]: Analyzing trace with hash 482568913, now seen corresponding path program 1 times [2021-11-25 19:09:04,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:09:04,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1677353311] [2021-11-25 19:09:04,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:04,304 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:09:04,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:09:04,305 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:09:04,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-25 19:09:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:09:04,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 19:09:04,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:09:04,684 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:09:04,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:09:05,243 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:09:05,243 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:09:05,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1677353311] [2021-11-25 19:09:05,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1677353311] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:09:05,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1277529570] [2021-11-25 19:09:05,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:05,244 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:09:05,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:09:05,257 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:09:05,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-25 19:09:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:09:05,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:09:05,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:09:05,603 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-25 19:09:05,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:09:05,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1277529570] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:09:05,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:09:05,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2021-11-25 19:09:05,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684869321] [2021-11-25 19:09:05,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:09:05,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:09:05,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:09:05,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:09:05,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-11-25 19:09:05,606 INFO L87 Difference]: Start difference. First operand 80 states and 108 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:09:05,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:09:05,797 INFO L93 Difference]: Finished difference Result 93 states and 121 transitions. [2021-11-25 19:09:05,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:09:05,798 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 55 [2021-11-25 19:09:05,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:09:05,799 INFO L225 Difference]: With dead ends: 93 [2021-11-25 19:09:05,799 INFO L226 Difference]: Without dead ends: 87 [2021-11-25 19:09:05,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-25 19:09:05,800 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 13 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:09:05,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 231 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:09:05,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-11-25 19:09:05,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2021-11-25 19:09:05,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 74 states have (on average 1.2837837837837838) internal successors, (95), 76 states have internal predecessors, (95), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-25 19:09:05,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 113 transitions. [2021-11-25 19:09:05,816 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 113 transitions. Word has length 55 [2021-11-25 19:09:05,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:09:05,817 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 113 transitions. [2021-11-25 19:09:05,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:09:05,817 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 113 transitions. [2021-11-25 19:09:05,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-25 19:09:05,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:09:05,819 INFO L514 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:09:05,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-25 19:09:06,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-25 19:09:06,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:09:06,225 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:09:06,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:09:06,226 INFO L85 PathProgramCache]: Analyzing trace with hash 539827215, now seen corresponding path program 1 times [2021-11-25 19:09:06,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:09:06,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [501154720] [2021-11-25 19:09:06,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:06,227 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:09:06,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:09:06,228 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:09:06,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-25 19:09:06,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:09:06,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 19:09:06,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:09:06,637 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:09:06,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:09:07,216 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:09:07,216 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:09:07,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [501154720] [2021-11-25 19:09:07,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [501154720] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:09:07,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1295674423] [2021-11-25 19:09:07,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:07,216 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:09:07,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:09:07,217 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:09:07,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-25 19:09:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:09:07,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 19:09:07,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:09:07,557 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:09:07,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:09:07,895 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:09:07,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1295674423] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:09:07,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62194985] [2021-11-25 19:09:07,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:07,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:09:07,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:09:07,897 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:09:07,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-25 19:09:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:09:07,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 19:09:07,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:09:08,466 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-25 19:09:08,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:09:08,757 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-25 19:09:08,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62194985] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 19:09:08,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2021-11-25 19:09:08,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6, 6, 6, 8] total 17 [2021-11-25 19:09:08,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211443650] [2021-11-25 19:09:08,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:09:08,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:09:08,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:09:08,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:09:08,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-11-25 19:09:08,759 INFO L87 Difference]: Start difference. First operand 85 states and 113 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:09:08,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:09:08,972 INFO L93 Difference]: Finished difference Result 91 states and 118 transitions. [2021-11-25 19:09:08,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:09:08,973 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 55 [2021-11-25 19:09:08,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:09:08,974 INFO L225 Difference]: With dead ends: 91 [2021-11-25 19:09:08,974 INFO L226 Difference]: Without dead ends: 73 [2021-11-25 19:09:08,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-11-25 19:09:08,976 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 2 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:09:08,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 299 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:09:08,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-11-25 19:09:08,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-11-25 19:09:08,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 62 states have (on average 1.2903225806451613) internal successors, (80), 65 states have internal predecessors, (80), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-25 19:09:08,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 95 transitions. [2021-11-25 19:09:08,983 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 95 transitions. Word has length 55 [2021-11-25 19:09:08,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:09:08,983 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 95 transitions. [2021-11-25 19:09:08,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:09:08,984 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 95 transitions. [2021-11-25 19:09:08,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-25 19:09:08,984 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:09:08,995 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-25 19:09:09,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-25 19:09:09,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-25 19:09:09,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-25 19:09:09,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:09:09,621 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:09:09,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:09:09,622 INFO L85 PathProgramCache]: Analyzing trace with hash -979005146, now seen corresponding path program 1 times [2021-11-25 19:09:09,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:09:09,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912585986] [2021-11-25 19:09:09,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:09,622 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:09:09,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:09:09,623 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:09:09,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-25 19:09:09,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:09:09,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 19:09:09,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:09:10,035 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:09:10,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:09:10,595 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:09:10,595 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:09:10,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912585986] [2021-11-25 19:09:10,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [912585986] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:09:10,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [673795030] [2021-11-25 19:09:10,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:10,596 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:09:10,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:09:10,597 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:09:10,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-25 19:09:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:09:10,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 19:09:10,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:09:11,210 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-25 19:09:11,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:09:11,472 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-25 19:09:11,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [673795030] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:09:11,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071968487] [2021-11-25 19:09:11,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:11,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:09:11,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:09:11,474 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:09:11,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-25 19:09:11,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:09:11,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 19:09:11,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:09:11,723 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-25 19:09:11,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:09:11,997 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-25 19:09:11,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071968487] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:09:11,997 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:09:11,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8, 8, 8, 8] total 16 [2021-11-25 19:09:11,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937757254] [2021-11-25 19:09:11,998 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:09:11,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 19:09:11,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:09:12,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 19:09:12,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-25 19:09:12,000 INFO L87 Difference]: Start difference. First operand 73 states and 95 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 15 states have internal predecessors, (82), 3 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 19:09:15,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:09:15,407 INFO L93 Difference]: Finished difference Result 180 states and 238 transitions. [2021-11-25 19:09:15,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-25 19:09:15,409 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 15 states have internal predecessors, (82), 3 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 60 [2021-11-25 19:09:15,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:09:15,410 INFO L225 Difference]: With dead ends: 180 [2021-11-25 19:09:15,411 INFO L226 Difference]: Without dead ends: 93 [2021-11-25 19:09:15,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=294, Invalid=1112, Unknown=0, NotChecked=0, Total=1406 [2021-11-25 19:09:15,413 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 163 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:09:15,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 495 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-25 19:09:15,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-11-25 19:09:15,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 74. [2021-11-25 19:09:15,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 64 states have (on average 1.265625) internal successors, (81), 66 states have internal predecessors, (81), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-25 19:09:15,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2021-11-25 19:09:15,424 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 60 [2021-11-25 19:09:15,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:09:15,425 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2021-11-25 19:09:15,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 15 states have internal predecessors, (82), 3 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 19:09:15,425 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2021-11-25 19:09:15,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-25 19:09:15,427 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:09:15,427 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 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] [2021-11-25 19:09:15,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-25 19:09:15,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-25 19:09:15,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-25 19:09:16,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:09:16,042 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:09:16,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:09:16,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1446076250, now seen corresponding path program 1 times [2021-11-25 19:09:16,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:09:16,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1676369365] [2021-11-25 19:09:16,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:16,043 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:09:16,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:09:16,043 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:09:16,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-25 19:09:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:09:16,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 19:09:16,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:09:16,616 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 26 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 19:09:16,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:09:17,831 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-25 19:09:17,831 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:09:17,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1676369365] [2021-11-25 19:09:17,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1676369365] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:09:17,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1186813667] [2021-11-25 19:09:17,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:17,832 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:09:17,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:09:17,837 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:09:17,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-25 19:09:17,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:09:17,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 19:09:17,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:09:18,825 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-25 19:09:18,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:09:19,312 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-25 19:09:19,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1186813667] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:09:19,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601664223] [2021-11-25 19:09:19,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:19,313 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:09:19,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:09:19,314 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:09:19,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-25 19:09:19,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:09:19,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 19:09:19,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:09:19,618 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-25 19:09:19,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:09:20,143 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-25 19:09:20,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601664223] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:09:20,144 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:09:20,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2021-11-25 19:09:20,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192457166] [2021-11-25 19:09:20,145 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:09:20,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-25 19:09:20,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:09:20,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-25 19:09:20,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-11-25 19:09:20,147 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand has 20 states, 20 states have (on average 4.75) internal successors, (95), 19 states have internal predecessors, (95), 3 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 19:09:24,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:09:24,520 INFO L93 Difference]: Finished difference Result 185 states and 242 transitions. [2021-11-25 19:09:24,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-25 19:09:24,522 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 19 states have internal predecessors, (95), 3 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 71 [2021-11-25 19:09:24,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:09:24,522 INFO L225 Difference]: With dead ends: 185 [2021-11-25 19:09:24,522 INFO L226 Difference]: Without dead ends: 0 [2021-11-25 19:09:24,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 403 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=250, Invalid=872, Unknown=0, NotChecked=0, Total=1122 [2021-11-25 19:09:24,525 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 151 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:09:24,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 611 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-25 19:09:24,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-25 19:09:24,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-25 19:09:24,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:09:24,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-25 19:09:24,526 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 71 [2021-11-25 19:09:24,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:09:24,527 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-25 19:09:24,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 19 states have internal predecessors, (95), 3 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 19:09:24,528 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-25 19:09:24,528 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-25 19:09:24,531 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-25 19:09:24,531 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-25 19:09:24,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-11-25 19:09:24,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-11-25 19:09:24,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2021-11-25 19:09:25,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:09:25,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-25 19:09:29,928 INFO L854 garLoopResultBuilder]: At program point L122(lines 71 124) the Hoare annotation is: (or (and (= base2flt_~e |base2flt_#in~e|) (= base2flt_~__retres4~0 (_ bv0 32)) (= base2flt_~m (bvshl (bvshl |base2flt_#in~m| (_ bv1 32)) (_ bv1 32)))) (not (= |base2flt_#in~m| (_ bv0 32))) (not (= currentRoundingMode roundNearestTiesToEven))) [2021-11-25 19:09:29,928 INFO L858 garLoopResultBuilder]: For program point L81(lines 80 95) no Hoare annotation was computed. [2021-11-25 19:09:29,929 INFO L858 garLoopResultBuilder]: For program point L102(lines 100 115) no Hoare annotation was computed. [2021-11-25 19:09:29,929 INFO L858 garLoopResultBuilder]: For program point L90(lines 90 94) no Hoare annotation was computed. [2021-11-25 19:09:29,929 INFO L854 garLoopResultBuilder]: At program point L90-1(lines 80 95) the Hoare annotation is: (let ((.cse0 (not (= currentRoundingMode roundNearestTiesToEven)))) (and (or (not (= |base2flt_#in~m| (_ bv0 32))) .cse0) (or .cse0 (bvult base2flt_~m (_ bv16777216 32)) (not (= |base2flt_#in~m| (_ bv1 32)))))) [2021-11-25 19:09:29,929 INFO L858 garLoopResultBuilder]: For program point L78(lines 78 118) no Hoare annotation was computed. [2021-11-25 19:09:29,929 INFO L861 garLoopResultBuilder]: At program point base2fltENTRY(lines 67 125) the Hoare annotation is: true [2021-11-25 19:09:29,929 INFO L854 garLoopResultBuilder]: At program point L116(lines 78 118) the Hoare annotation is: (or (not (= |base2flt_#in~m| (_ bv0 32))) (not (= currentRoundingMode roundNearestTiesToEven))) [2021-11-25 19:09:29,929 INFO L858 garLoopResultBuilder]: For program point base2fltFINAL(lines 67 125) no Hoare annotation was computed. [2021-11-25 19:09:29,929 INFO L854 garLoopResultBuilder]: At program point L100-2(lines 100 115) the Hoare annotation is: (or (let ((.cse0 (not (= |base2flt_#in~e| (_ bv0 32))))) (and (or (not (bvsle base2flt_~e (_ bv4294967168 32))) .cse0) (or (not (bvsle (bvadd (_ bv4294967292 32) base2flt_~e) (_ bv4294967168 32))) .cse0) (not (bvult |base2flt_#in~m| (_ bv16777216 32))))) (not (= currentRoundingMode roundNearestTiesToEven))) [2021-11-25 19:09:29,929 INFO L858 garLoopResultBuilder]: For program point base2fltEXIT(lines 67 125) no Hoare annotation was computed. [2021-11-25 19:09:29,930 INFO L858 garLoopResultBuilder]: For program point L72(lines 72 77) no Hoare annotation was computed. [2021-11-25 19:09:29,930 INFO L858 garLoopResultBuilder]: For program point L101(lines 100 115) no Hoare annotation was computed. [2021-11-25 19:09:29,930 INFO L854 garLoopResultBuilder]: At program point L283(line 283) the Hoare annotation is: (and (= |ULTIMATE.start_main2_~zero~0#1| (_ bv0 32)) (= currentRoundingMode roundNearestTiesToEven)) [2021-11-25 19:09:29,930 INFO L858 garLoopResultBuilder]: For program point L283-1(line 283) no Hoare annotation was computed. [2021-11-25 19:09:29,930 INFO L858 garLoopResultBuilder]: For program point L300(lines 300 309) no Hoare annotation was computed. [2021-11-25 19:09:29,930 INFO L854 garLoopResultBuilder]: At program point L300-2(lines 300 309) the Hoare annotation is: (and (= |ULTIMATE.start_main2_~tmp___0~0#1| (_ bv0 32)) (= |ULTIMATE.start_main2_~tmp___1~0#1| (_ bv0 32)) (= |ULTIMATE.start_main2_~zero~0#1| (_ bv0 32)) (= currentRoundingMode roundNearestTiesToEven)) [2021-11-25 19:09:29,930 INFO L858 garLoopResultBuilder]: For program point L201(lines 201 207) no Hoare annotation was computed. [2021-11-25 19:09:29,931 INFO L858 garLoopResultBuilder]: For program point L201-2(lines 200 261) no Hoare annotation was computed. [2021-11-25 19:09:29,931 INFO L854 garLoopResultBuilder]: At program point L259(lines 200 261) the Hoare annotation is: (let ((.cse0 (= currentRoundingMode roundNearestTiesToEven))) (or (and (= (_ bv1 32) |ULTIMATE.start_main2_~sb~0#1|) (= |ULTIMATE.start_main2_~tmp~2#1| (_ bv1 32)) .cse0) (and (= (bvadd (_ bv1 32) |ULTIMATE.start_main2_~sb~0#1|) (_ bv0 32)) .cse0) (and (= |ULTIMATE.start_mulflt_~__retres10~1#1| (_ bv0 32)) (= |ULTIMATE.start_main2_~zero~0#1| (_ bv0 32)) .cse0))) [2021-11-25 19:09:29,931 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-25 19:09:29,931 INFO L861 garLoopResultBuilder]: At program point L317(lines 263 319) the Hoare annotation is: true [2021-11-25 19:09:29,931 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-25 19:09:29,931 INFO L854 garLoopResultBuilder]: At program point L284(line 284) the Hoare annotation is: (and (= |ULTIMATE.start_main2_~zero~0#1| (_ bv0 32)) (= currentRoundingMode roundNearestTiesToEven)) [2021-11-25 19:09:29,931 INFO L858 garLoopResultBuilder]: For program point L284-1(line 284) no Hoare annotation was computed. [2021-11-25 19:09:29,932 INFO L854 garLoopResultBuilder]: At program point L260(lines 190 262) the Hoare annotation is: (let ((.cse0 (= currentRoundingMode roundNearestTiesToEven))) (or (and (= (_ bv1 32) |ULTIMATE.start_main2_~sb~0#1|) (= |ULTIMATE.start_main2_~tmp~2#1| (_ bv1 32)) .cse0) (and (= (_ bv0 32) |ULTIMATE.start_mulflt_#res#1|) (= |ULTIMATE.start_mulflt_~__retres10~1#1| (_ bv0 32)) (= |ULTIMATE.start_main2_~zero~0#1| (_ bv0 32)) .cse0) (and (= (bvadd (_ bv1 32) |ULTIMATE.start_main2_~sb~0#1|) (_ bv0 32)) .cse0))) [2021-11-25 19:09:29,932 INFO L858 garLoopResultBuilder]: For program point L228(lines 228 233) no Hoare annotation was computed. [2021-11-25 19:09:29,932 INFO L858 garLoopResultBuilder]: For program point L286(lines 286 295) no Hoare annotation was computed. [2021-11-25 19:09:29,932 INFO L858 garLoopResultBuilder]: For program point L286-2(lines 286 295) no Hoare annotation was computed. [2021-11-25 19:09:29,932 INFO L858 garLoopResultBuilder]: For program point L47(lines 47 48) no Hoare annotation was computed. [2021-11-25 19:09:29,932 INFO L858 garLoopResultBuilder]: For program point L303(lines 303 307) no Hoare annotation was computed. [2021-11-25 19:09:29,932 INFO L858 garLoopResultBuilder]: For program point L47-2(lines 47 48) no Hoare annotation was computed. [2021-11-25 19:09:29,933 INFO L858 garLoopResultBuilder]: For program point L237(lines 237 254) no Hoare annotation was computed. [2021-11-25 19:09:29,933 INFO L858 garLoopResultBuilder]: For program point L303-2(lines 303 307) no Hoare annotation was computed. [2021-11-25 19:09:29,933 INFO L858 garLoopResultBuilder]: For program point L237-2(lines 237 254) no Hoare annotation was computed. [2021-11-25 19:09:29,933 INFO L858 garLoopResultBuilder]: For program point L320(lines 320 326) no Hoare annotation was computed. [2021-11-25 19:09:29,933 INFO L858 garLoopResultBuilder]: For program point L246(lines 246 251) no Hoare annotation was computed. [2021-11-25 19:09:29,934 INFO L858 garLoopResultBuilder]: For program point L48(line 48) no Hoare annotation was computed. [2021-11-25 19:09:29,934 INFO L858 garLoopResultBuilder]: For program point L238(lines 238 243) no Hoare annotation was computed. [2021-11-25 19:09:29,934 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-25 19:09:29,934 INFO L858 garLoopResultBuilder]: For program point L222(lines 222 227) no Hoare annotation was computed. [2021-11-25 19:09:29,934 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2021-11-25 19:09:29,935 INFO L858 garLoopResultBuilder]: For program point L322(lines 322 325) no Hoare annotation was computed. [2021-11-25 19:09:29,935 INFO L858 garLoopResultBuilder]: For program point L33(lines 33 35) no Hoare annotation was computed. [2021-11-25 19:09:29,935 INFO L858 garLoopResultBuilder]: For program point L289(lines 289 293) no Hoare annotation was computed. [2021-11-25 19:09:29,935 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-25 19:09:29,935 INFO L858 garLoopResultBuilder]: For program point L289-2(lines 289 293) no Hoare annotation was computed. [2021-11-25 19:09:29,936 INFO L854 garLoopResultBuilder]: At program point L281(line 281) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2021-11-25 19:09:29,936 INFO L858 garLoopResultBuilder]: For program point L281-1(line 281) no Hoare annotation was computed. [2021-11-25 19:09:29,936 INFO L861 garLoopResultBuilder]: At program point L50(lines 37 51) the Hoare annotation is: true [2021-11-25 19:09:29,936 INFO L858 garLoopResultBuilder]: For program point L34(line 34) no Hoare annotation was computed. [2021-11-25 19:09:29,936 INFO L854 garLoopResultBuilder]: At program point L282(line 282) the Hoare annotation is: (and (= |ULTIMATE.start_main2_~zero~0#1| (_ bv0 32)) (= currentRoundingMode roundNearestTiesToEven)) [2021-11-25 19:09:29,936 INFO L858 garLoopResultBuilder]: For program point L282-1(line 282) no Hoare annotation was computed. [2021-11-25 19:09:29,937 INFO L858 garLoopResultBuilder]: For program point L299(lines 299 315) no Hoare annotation was computed. [2021-11-25 19:09:29,937 INFO L858 garLoopResultBuilder]: For program point L299-1(lines 299 315) no Hoare annotation was computed. [2021-11-25 19:09:29,937 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 58 63) the Hoare annotation is: true [2021-11-25 19:09:29,937 INFO L858 garLoopResultBuilder]: For program point L60(line 60) no Hoare annotation was computed. [2021-11-25 19:09:29,937 INFO L858 garLoopResultBuilder]: For program point L59(lines 59 61) no Hoare annotation was computed. [2021-11-25 19:09:29,938 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 58 63) no Hoare annotation was computed. [2021-11-25 19:09:29,938 INFO L858 garLoopResultBuilder]: For program point L59-2(lines 58 63) no Hoare annotation was computed. [2021-11-25 19:09:29,938 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 60) no Hoare annotation was computed. [2021-11-25 19:09:29,942 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:09:29,943 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 19:09:29,952 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:29,953 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:29,954 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:29,958 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:29,958 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:29,958 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:29,960 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:29,960 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:29,961 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:29,961 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:29,962 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:29,963 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:29,963 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:29,964 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:29,964 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:29,964 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:29,965 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:29,965 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:29,965 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:29,966 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:29,966 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:29,966 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:29,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 07:09:29 BoogieIcfgContainer [2021-11-25 19:09:29,967 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 19:09:29,968 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 19:09:29,968 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 19:09:29,968 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 19:09:29,968 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:56:50" (3/4) ... [2021-11-25 19:09:29,971 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-25 19:09:29,978 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure base2flt [2021-11-25 19:09:29,978 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-11-25 19:09:29,985 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2021-11-25 19:09:29,986 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-25 19:09:29,986 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-25 19:09:29,987 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-25 19:09:30,011 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((e == \old(e) && __retres4 == 0bv32) && m == ~bvshl32(~bvshl32(\old(m), 1bv32), 1bv32)) || !(\old(m) == 0bv32)) || !(unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) [2021-11-25 19:09:30,012 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(\old(m) == 0bv32) || !(unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven)) && ((!(unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) || ~bvult32(m, 16777216bv32)) || !(\old(m) == 1bv32)) [2021-11-25 19:09:30,012 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!~bvsle32(e, 4294967168bv32) || !(\old(e) == 0bv32)) && (!~bvsle32(~bvadd64(4294967292bv32, e), 4294967168bv32) || !(\old(e) == 0bv32))) && !~bvult32(\old(m), 16777216bv32)) || !(unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) [2021-11-25 19:09:30,012 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !(\old(m) == 0bv32) || !(unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) [2021-11-25 19:09:30,013 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((1bv32 == sb && tmp == 1bv32) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) || (((0bv32 == \result && __retres10 == 0bv32) && zero == 0bv32) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven)) || (~bvadd64(1bv32, sb) == 0bv32 && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) [2021-11-25 19:09:30,038 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 19:09:30,038 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 19:09:30,039 INFO L158 Benchmark]: Toolchain (without parser) took 762983.84ms. Allocated memory was 71.3MB in the beginning and 148.9MB in the end (delta: 77.6MB). Free memory was 46.7MB in the beginning and 103.3MB in the end (delta: -56.6MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. [2021-11-25 19:09:30,039 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 50.3MB. Free memory was 30.0MB in the beginning and 29.9MB in the end (delta: 36.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:09:30,040 INFO L158 Benchmark]: CACSL2BoogieTranslator took 407.59ms. Allocated memory is still 71.3MB. Free memory was 46.5MB in the beginning and 49.9MB in the end (delta: -3.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 19:09:30,040 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.08ms. Allocated memory is still 71.3MB. Free memory was 49.9MB in the beginning and 47.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:09:30,040 INFO L158 Benchmark]: Boogie Preprocessor took 36.76ms. Allocated memory is still 71.3MB. Free memory was 47.8MB in the beginning and 46.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:09:30,041 INFO L158 Benchmark]: RCFGBuilder took 2710.10ms. Allocated memory is still 71.3MB. Free memory was 46.1MB in the beginning and 51.2MB in the end (delta: -5.0MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2021-11-25 19:09:30,041 INFO L158 Benchmark]: TraceAbstraction took 759705.95ms. Allocated memory was 71.3MB in the beginning and 148.9MB in the end (delta: 77.6MB). Free memory was 50.6MB in the beginning and 107.5MB in the end (delta: -56.9MB). Peak memory consumption was 86.2MB. Max. memory is 16.1GB. [2021-11-25 19:09:30,042 INFO L158 Benchmark]: Witness Printer took 70.60ms. Allocated memory is still 148.9MB. Free memory was 107.5MB in the beginning and 103.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-25 19:09:30,044 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 50.3MB. Free memory was 30.0MB in the beginning and 29.9MB in the end (delta: 36.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 407.59ms. Allocated memory is still 71.3MB. Free memory was 46.5MB in the beginning and 49.9MB in the end (delta: -3.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.08ms. Allocated memory is still 71.3MB. Free memory was 49.9MB in the beginning and 47.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.76ms. Allocated memory is still 71.3MB. Free memory was 47.8MB in the beginning and 46.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2710.10ms. Allocated memory is still 71.3MB. Free memory was 46.1MB in the beginning and 51.2MB in the end (delta: -5.0MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. * TraceAbstraction took 759705.95ms. Allocated memory was 71.3MB in the beginning and 148.9MB in the end (delta: 77.6MB). Free memory was 50.6MB in the beginning and 107.5MB in the end (delta: -56.9MB). Peak memory consumption was 86.2MB. Max. memory is 16.1GB. * Witness Printer took 70.60ms. Allocated memory is still 148.9MB. Free memory was 107.5MB in the beginning and 103.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 48]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 60]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 61 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 759.6s, OverallIterations: 14, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 14.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.8s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 602 SdHoareTripleChecker+Valid, 9.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 602 mSDsluCounter, 3694 SdHoareTripleChecker+Invalid, 8.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 137 IncrementalHoareTripleChecker+Unchecked, 2872 mSDsCounter, 97 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1628 IncrementalHoareTripleChecker+Invalid, 1863 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 97 mSolverCounterUnsat, 822 mSDtfsCounter, 1628 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2266 GetRequests, 2094 SyntacticMatches, 4 SemanticMatches, 168 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 16.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=11, InterpolantAutomatonStates: 132, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 105 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 137 PreInvPairs, 382 NumberOfFragments, 188 HoareAnnotationTreeSize, 137 FomulaSimplifications, 78586 FormulaSimplificationTreeSizeReduction, 2.6s HoareSimplificationTime, 15 FomulaSimplificationsInter, 32773 FormulaSimplificationTreeSizeReductionInter, 2.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 649.0s SatisfiabilityAnalysisTime, 84.4s InterpolantComputationTime, 1321 NumberOfCodeBlocks, 1321 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 2196 ConstructedInterpolants, 2 QuantifiedInterpolants, 4244 SizeOfPredicates, 59 NumberOfNonLiveVariables, 2478 ConjunctsInSsa, 134 ConjunctsInUnsatCore, 42 InterpolantComputations, 11 PerfectInterpolantSequences, 1219/1479 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 200]: Loop Invariant [2021-11-25 19:09:30,054 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:30,054 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:30,055 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:30,055 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:30,055 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:30,056 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (((1bv32 == sb && tmp == 1bv32) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) || (~bvadd64(1bv32, sb) == 0bv32 && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven)) || ((__retres10 == 0bv32 && zero == 0bv32) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) - InvariantResult [Line: 263]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 78]: Loop Invariant [2021-11-25 19:09:30,056 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:30,057 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: !(\old(m) == 0bv32) || !(unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) - InvariantResult [Line: 71]: Loop Invariant [2021-11-25 19:09:30,057 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:30,058 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (((e == \old(e) && __retres4 == 0bv32) && m == ~bvshl32(~bvshl32(\old(m), 1bv32), 1bv32)) || !(\old(m) == 0bv32)) || !(unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) - InvariantResult [Line: 100]: Loop Invariant [2021-11-25 19:09:30,058 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:30,059 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (((!~bvsle32(e, 4294967168bv32) || !(\old(e) == 0bv32)) && (!~bvsle32(~bvadd64(4294967292bv32, e), 4294967168bv32) || !(\old(e) == 0bv32))) && !~bvult32(\old(m), 16777216bv32)) || !(unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 80]: Loop Invariant [2021-11-25 19:09:30,059 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:30,059 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:30,060 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:30,060 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (!(\old(m) == 0bv32) || !(unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven)) && ((!(unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) || ~bvult32(m, 16777216bv32)) || !(\old(m) == 1bv32)) - InvariantResult [Line: 190]: Loop Invariant [2021-11-25 19:09:30,060 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:30,061 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:30,061 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:30,061 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:30,061 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 19:09:30,062 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (((1bv32 == sb && tmp == 1bv32) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) || (((0bv32 == \result && __retres10 == 0bv32) && zero == 0bv32) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven)) || (~bvadd64(1bv32, sb) == 0bv32 && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) RESULT: Ultimate proved your program to be correct! [2021-11-25 19:09:30,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085a5c87-3951-49ab-813e-63f2eb751f06/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE