./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_5+soft_float_2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_5+soft_float_2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 022d3c5901739211c5eb00a5826c62b3632d6c52c21250401c080cec1ded6145 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:17:17,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:17:17,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:17:17,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:17:17,875 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:17:17,881 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:17:17,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:17:17,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:17:17,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:17:17,903 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:17:17,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:17:17,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:17:17,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:17:17,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:17:17,914 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:17:17,917 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:17:17,919 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:17:17,920 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:17:17,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:17:17,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:17:17,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:17:17,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:17:17,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:17:17,943 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:17:17,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:17:17,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:17:17,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:17:17,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:17:17,959 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:17:17,961 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:17:17,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:17:17,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:17:17,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:17:17,968 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:17:17,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:17:17,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:17:17,971 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:17:17,971 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:17:17,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:17:17,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:17:17,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:17:17,975 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:17:18,029 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:17:18,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:17:18,031 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:17:18,031 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:17:18,032 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:17:18,032 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:17:18,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:17:18,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:17:18,034 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:17:18,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:17:18,035 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:17:18,036 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:17:18,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:17:18,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:17:18,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:17:18,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:17:18,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:17:18,037 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:17:18,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:17:18,038 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:17:18,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:17:18,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:17:18,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:17:18,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:17:18,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:17:18,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:17:18,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:17:18,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:17:18,040 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:17:18,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:17:18,041 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:17:18,041 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:17:18,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:17:18,042 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 022d3c5901739211c5eb00a5826c62b3632d6c52c21250401c080cec1ded6145 [2022-10-17 10:17:18,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:17:18,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:17:18,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:17:18,366 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:17:18,367 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:17:18,368 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/combinations/square_5+soft_float_2a.c.cil.c [2022-10-17 10:17:18,449 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ/data/8b76657b0/896db5b8205e40bb8c1328279834cc15/FLAG136e8712f [2022-10-17 10:17:18,976 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:17:18,976 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/sv-benchmarks/c/combinations/square_5+soft_float_2a.c.cil.c [2022-10-17 10:17:18,999 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ/data/8b76657b0/896db5b8205e40bb8c1328279834cc15/FLAG136e8712f [2022-10-17 10:17:19,288 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ/data/8b76657b0/896db5b8205e40bb8c1328279834cc15 [2022-10-17 10:17:19,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:17:19,293 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:17:19,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:17:19,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:17:19,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:17:19,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:17:19" (1/1) ... [2022-10-17 10:17:19,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30032c91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:19, skipping insertion in model container [2022-10-17 10:17:19,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:17:19" (1/1) ... [2022-10-17 10:17:19,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:17:19,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:17:19,599 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_50b193c1-3306-4938-9ae8-7d4aadb861cb/sv-benchmarks/c/combinations/square_5+soft_float_2a.c.cil.c[1998,2011] [2022-10-17 10:17:19,605 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_50b193c1-3306-4938-9ae8-7d4aadb861cb/sv-benchmarks/c/combinations/square_5+soft_float_2a.c.cil.c[2367,2380] [2022-10-17 10:17:19,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:17:19,723 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:17:19,759 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_50b193c1-3306-4938-9ae8-7d4aadb861cb/sv-benchmarks/c/combinations/square_5+soft_float_2a.c.cil.c[1998,2011] [2022-10-17 10:17:19,767 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_50b193c1-3306-4938-9ae8-7d4aadb861cb/sv-benchmarks/c/combinations/square_5+soft_float_2a.c.cil.c[2367,2380] [2022-10-17 10:17:19,830 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:17:19,853 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:17:19,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:19 WrapperNode [2022-10-17 10:17:19,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:17:19,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:17:19,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:17:19,856 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:17:19,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:19" (1/1) ... [2022-10-17 10:17:19,879 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:19" (1/1) ... [2022-10-17 10:17:19,922 INFO L138 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 199 [2022-10-17 10:17:19,923 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:17:19,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:17:19,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:17:19,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:17:19,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:19" (1/1) ... [2022-10-17 10:17:19,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:19" (1/1) ... [2022-10-17 10:17:19,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:19" (1/1) ... [2022-10-17 10:17:19,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:19" (1/1) ... [2022-10-17 10:17:19,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:19" (1/1) ... [2022-10-17 10:17:19,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:19" (1/1) ... [2022-10-17 10:17:19,965 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:19" (1/1) ... [2022-10-17 10:17:19,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:19" (1/1) ... [2022-10-17 10:17:19,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:17:19,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:17:19,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:17:19,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:17:19,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:19" (1/1) ... [2022-10-17 10:17:19,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:17:20,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:17:20,032 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:17:20,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:17:20,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:17:20,081 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-10-17 10:17:20,081 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-10-17 10:17:20,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:17:20,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:17:20,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:17:20,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-17 10:17:20,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-17 10:17:20,165 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:17:20,167 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:17:20,861 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:17:20,878 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:17:20,884 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-17 10:17:20,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:17:20 BoogieIcfgContainer [2022-10-17 10:17:20,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:17:20,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:17:20,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:17:20,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:17:20,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:17:19" (1/3) ... [2022-10-17 10:17:20,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@746a579b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:17:20, skipping insertion in model container [2022-10-17 10:17:20,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:19" (2/3) ... [2022-10-17 10:17:20,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@746a579b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:17:20, skipping insertion in model container [2022-10-17 10:17:20,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:17:20" (3/3) ... [2022-10-17 10:17:20,897 INFO L112 eAbstractionObserver]: Analyzing ICFG square_5+soft_float_2a.c.cil.c [2022-10-17 10:17:20,919 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:17:20,920 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-17 10:17:21,002 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:17:21,013 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1de7275f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:17:21,013 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-17 10:17:21,021 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 87 states have (on average 1.6896551724137931) internal successors, (147), 90 states have internal predecessors, (147), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-17 10:17:21,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 10:17:21,030 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:17:21,030 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:17:21,031 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:17:21,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:17:21,038 INFO L85 PathProgramCache]: Analyzing trace with hash -685161840, now seen corresponding path program 1 times [2022-10-17 10:17:21,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:17:21,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667963656] [2022-10-17 10:17:21,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:21,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:17:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:21,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:17:21,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:17:21,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667963656] [2022-10-17 10:17:21,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667963656] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:17:21,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:17:21,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:17:21,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235069838] [2022-10-17 10:17:21,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:17:21,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:17:21,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:17:21,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:17:21,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:17:21,351 INFO L87 Difference]: Start difference. First operand has 97 states, 87 states have (on average 1.6896551724137931) internal successors, (147), 90 states have internal predecessors, (147), 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) [2022-10-17 10:17:21,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:17:21,395 INFO L93 Difference]: Finished difference Result 189 states and 311 transitions. [2022-10-17 10:17:21,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:17:21,398 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 [2022-10-17 10:17:21,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:17:21,409 INFO L225 Difference]: With dead ends: 189 [2022-10-17 10:17:21,410 INFO L226 Difference]: Without dead ends: 88 [2022-10-17 10:17:21,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:17:21,419 INFO L413 NwaCegarLoop]: 140 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, 140 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:17:21,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:17:21,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-10-17 10:17:21,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2022-10-17 10:17:21,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 80 states have (on average 1.5) internal successors, (120), 81 states have internal predecessors, (120), 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) [2022-10-17 10:17:21,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 129 transitions. [2022-10-17 10:17:21,472 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 129 transitions. Word has length 7 [2022-10-17 10:17:21,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:17:21,473 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 129 transitions. [2022-10-17 10:17:21,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:21,474 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 129 transitions. [2022-10-17 10:17:21,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 10:17:21,476 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:17:21,476 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:17:21,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:17:21,477 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:17:21,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:17:21,478 INFO L85 PathProgramCache]: Analyzing trace with hash -685102258, now seen corresponding path program 1 times [2022-10-17 10:17:21,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:17:21,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666221931] [2022-10-17 10:17:21,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:21,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:17:21,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:17:21,503 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:17:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:17:21,535 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:17:21,536 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 10:17:21,538 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-10-17 10:17:21,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-10-17 10:17:21,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:17:21,545 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-10-17 10:17:21,549 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 10:17:21,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 10:17:21 BoogieIcfgContainer [2022-10-17 10:17:21,573 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 10:17:21,574 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 10:17:21,574 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 10:17:21,575 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 10:17:21,575 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:17:20" (3/4) ... [2022-10-17 10:17:21,579 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-10-17 10:17:21,580 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 10:17:21,581 INFO L158 Benchmark]: Toolchain (without parser) took 2287.61ms. Allocated memory was 102.8MB in the beginning and 127.9MB in the end (delta: 25.2MB). Free memory was 57.1MB in the beginning and 89.7MB in the end (delta: -32.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:17:21,582 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 102.8MB. Free memory was 73.6MB in the beginning and 73.6MB in the end (delta: 43.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:17:21,583 INFO L158 Benchmark]: CACSL2BoogieTranslator took 545.94ms. Allocated memory is still 102.8MB. Free memory was 56.9MB in the beginning and 71.1MB in the end (delta: -14.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 10:17:21,583 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.34ms. Allocated memory is still 102.8MB. Free memory was 71.1MB in the beginning and 68.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:17:21,584 INFO L158 Benchmark]: Boogie Preprocessor took 60.57ms. Allocated memory is still 102.8MB. Free memory was 68.6MB in the beginning and 66.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:17:21,585 INFO L158 Benchmark]: RCFGBuilder took 901.65ms. Allocated memory is still 102.8MB. Free memory was 66.6MB in the beginning and 44.6MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-10-17 10:17:21,586 INFO L158 Benchmark]: TraceAbstraction took 684.51ms. Allocated memory was 102.8MB in the beginning and 127.9MB in the end (delta: 25.2MB). Free memory was 43.8MB in the beginning and 90.2MB in the end (delta: -46.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:17:21,586 INFO L158 Benchmark]: Witness Printer took 5.65ms. Allocated memory is still 127.9MB. Free memory was 90.2MB in the beginning and 89.7MB in the end (delta: 535.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:17:21,590 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 102.8MB. Free memory was 73.6MB in the beginning and 73.6MB in the end (delta: 43.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 545.94ms. Allocated memory is still 102.8MB. Free memory was 56.9MB in the beginning and 71.1MB in the end (delta: -14.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.34ms. Allocated memory is still 102.8MB. Free memory was 71.1MB in the beginning and 68.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.57ms. Allocated memory is still 102.8MB. Free memory was 68.6MB in the beginning and 66.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 901.65ms. Allocated memory is still 102.8MB. Free memory was 66.6MB in the beginning and 44.6MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 684.51ms. Allocated memory was 102.8MB in the beginning and 127.9MB in the end (delta: 25.2MB). Free memory was 43.8MB in the beginning and 90.2MB in the end (delta: -46.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.65ms. Allocated memory is still 127.9MB. Free memory was 90.2MB in the beginning and 89.7MB in the end (delta: 535.6kB). 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) VAL [\old(cond)=1, cond=1] [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=53, x=53] [L47] COND TRUE !(result >= 0.0f && result < 1.3985f) VAL [IN=53, x=53] [L48] reach_error() VAL [IN=53, x=53] - 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, 97 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 140 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 140 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2022-10-17 10:17:21,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ/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_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_5+soft_float_2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 022d3c5901739211c5eb00a5826c62b3632d6c52c21250401c080cec1ded6145 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:17:24,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:17:24,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:17:24,483 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:17:24,484 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:17:24,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:17:24,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:17:24,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:17:24,508 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:17:24,515 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:17:24,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:17:24,520 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:17:24,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:17:24,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:17:24,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:17:24,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:17:24,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:17:24,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:17:24,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:17:24,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:17:24,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:17:24,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:17:24,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:17:24,558 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:17:24,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:17:24,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:17:24,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:17:24,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:17:24,574 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:17:24,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:17:24,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:17:24,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:17:24,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:17:24,581 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:17:24,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:17:24,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:17:24,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:17:24,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:17:24,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:17:24,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:17:24,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:17:24,589 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-10-17 10:17:24,638 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:17:24,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:17:24,640 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:17:24,640 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:17:24,641 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:17:24,642 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:17:24,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:17:24,644 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:17:24,644 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:17:24,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:17:24,645 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:17:24,646 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:17:24,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:17:24,646 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:17:24,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:17:24,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:17:24,647 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 10:17:24,648 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-10-17 10:17:24,648 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-10-17 10:17:24,648 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:17:24,648 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:17:24,649 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:17:24,649 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:17:24,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:17:24,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:17:24,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:17:24,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:17:24,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:17:24,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:17:24,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:17:24,652 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-10-17 10:17:24,652 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-10-17 10:17:24,653 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:17:24,653 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:17:24,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:17:24,653 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-17 10:17:24,654 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_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 022d3c5901739211c5eb00a5826c62b3632d6c52c21250401c080cec1ded6145 [2022-10-17 10:17:25,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:17:25,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:17:25,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:17:25,125 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:17:25,126 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:17:25,128 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/combinations/square_5+soft_float_2a.c.cil.c [2022-10-17 10:17:25,217 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ/data/010cd615f/3382ce6cfb494939bf83c29d5e3e4bf4/FLAG6c1382b4a [2022-10-17 10:17:25,833 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:17:25,834 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/sv-benchmarks/c/combinations/square_5+soft_float_2a.c.cil.c [2022-10-17 10:17:25,844 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ/data/010cd615f/3382ce6cfb494939bf83c29d5e3e4bf4/FLAG6c1382b4a [2022-10-17 10:17:26,179 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ/data/010cd615f/3382ce6cfb494939bf83c29d5e3e4bf4 [2022-10-17 10:17:26,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:17:26,186 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:17:26,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:17:26,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:17:26,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:17:26,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:17:26" (1/1) ... [2022-10-17 10:17:26,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f48a5a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:26, skipping insertion in model container [2022-10-17 10:17:26,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:17:26" (1/1) ... [2022-10-17 10:17:26,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:17:26,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:17:26,523 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_50b193c1-3306-4938-9ae8-7d4aadb861cb/sv-benchmarks/c/combinations/square_5+soft_float_2a.c.cil.c[1998,2011] [2022-10-17 10:17:26,531 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_50b193c1-3306-4938-9ae8-7d4aadb861cb/sv-benchmarks/c/combinations/square_5+soft_float_2a.c.cil.c[2367,2380] [2022-10-17 10:17:26,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:17:26,664 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:17:26,698 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_50b193c1-3306-4938-9ae8-7d4aadb861cb/sv-benchmarks/c/combinations/square_5+soft_float_2a.c.cil.c[1998,2011] [2022-10-17 10:17:26,702 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_50b193c1-3306-4938-9ae8-7d4aadb861cb/sv-benchmarks/c/combinations/square_5+soft_float_2a.c.cil.c[2367,2380] [2022-10-17 10:17:26,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:17:26,774 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:17:26,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:26 WrapperNode [2022-10-17 10:17:26,775 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:17:26,776 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:17:26,777 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:17:26,777 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:17:26,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:26" (1/1) ... [2022-10-17 10:17:26,800 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:26" (1/1) ... [2022-10-17 10:17:26,828 INFO L138 Inliner]: procedures = 28, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 129 [2022-10-17 10:17:26,828 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:17:26,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:17:26,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:17:26,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:17:26,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:26" (1/1) ... [2022-10-17 10:17:26,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:26" (1/1) ... [2022-10-17 10:17:26,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:26" (1/1) ... [2022-10-17 10:17:26,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:26" (1/1) ... [2022-10-17 10:17:26,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:26" (1/1) ... [2022-10-17 10:17:26,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:26" (1/1) ... [2022-10-17 10:17:26,867 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:26" (1/1) ... [2022-10-17 10:17:26,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:26" (1/1) ... [2022-10-17 10:17:26,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:17:26,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:17:26,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:17:26,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:17:26,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:26" (1/1) ... [2022-10-17 10:17:26,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:17:26,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:17:26,940 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:17:26,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:17:27,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:17:27,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-10-17 10:17:27,001 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-10-17 10:17:27,001 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-10-17 10:17:27,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:17:27,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:17:27,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-17 10:17:27,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-17 10:17:27,100 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:17:27,102 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:17:29,688 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:17:29,697 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:17:29,701 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-17 10:17:29,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:17:29 BoogieIcfgContainer [2022-10-17 10:17:29,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:17:29,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:17:29,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:17:29,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:17:29,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:17:26" (1/3) ... [2022-10-17 10:17:29,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6142a519 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:17:29, skipping insertion in model container [2022-10-17 10:17:29,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:26" (2/3) ... [2022-10-17 10:17:29,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6142a519 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:17:29, skipping insertion in model container [2022-10-17 10:17:29,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:17:29" (3/3) ... [2022-10-17 10:17:29,717 INFO L112 eAbstractionObserver]: Analyzing ICFG square_5+soft_float_2a.c.cil.c [2022-10-17 10:17:29,738 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:17:29,738 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-17 10:17:29,806 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:17:29,814 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@25d5f484, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:17:29,814 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-17 10:17:29,819 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) [2022-10-17 10:17:29,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 10:17:29,825 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:17:29,826 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:17:29,826 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:17:29,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:17:29,832 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-10-17 10:17:29,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:17:29,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1951346307] [2022-10-17 10:17:29,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:29,847 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:17:29,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:17:29,852 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:17:29,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-10-17 10:17:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:30,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 10:17:30,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:17:30,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:17:30,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:17:30,636 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:17:30,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1951346307] [2022-10-17 10:17:30,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1951346307] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:17:30,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:17:30,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:17:30,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601523889] [2022-10-17 10:17:30,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:17:30,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:17:30,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:17:30,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:17:30,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:17:30,720 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) [2022-10-17 10:17:30,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:17:30,754 INFO L93 Difference]: Finished difference Result 117 states and 175 transitions. [2022-10-17 10:17:30,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:17:30,756 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 [2022-10-17 10:17:30,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:17:30,766 INFO L225 Difference]: With dead ends: 117 [2022-10-17 10:17:30,767 INFO L226 Difference]: Without dead ends: 52 [2022-10-17 10:17:30,771 INFO L412 NwaCegarLoop]: 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 [2022-10-17 10:17:30,775 INFO L413 NwaCegarLoop]: 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 [2022-10-17 10:17:30,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:17:30,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-10-17 10:17:30,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-10-17 10:17:30,823 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) [2022-10-17 10:17:30,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2022-10-17 10:17:30,835 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 7 [2022-10-17 10:17:30,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:17:30,837 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2022-10-17 10:17:30,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:30,837 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2022-10-17 10:17:30,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 10:17:30,840 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:17:30,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:17:30,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:17:31,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:17:31,069 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:17:31,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:17:31,070 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-10-17 10:17:31,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:17:31,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [745100281] [2022-10-17 10:17:31,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:31,071 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:17:31,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:17:31,075 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:17:31,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b193c1-3306-4938-9ae8-7d4aadb861cb/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process