./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/digits_while.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_86a4edb0-a3e5-41de-a784-ef8f962fac58/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/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_86a4edb0-a3e5-41de-a784-ef8f962fac58/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/digits_while.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/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_86a4edb0-a3e5-41de-a784-ef8f962fac58/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 4eb7ec87e4b26eecb67fe680444df008acb1d5ac2a26461a17b628d29f2e5ff2 --- 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 11:07:33,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 11:07:33,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 11:07:33,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 11:07:33,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 11:07:33,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 11:07:33,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 11:07:33,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 11:07:33,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 11:07:33,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 11:07:33,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 11:07:33,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 11:07:33,996 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 11:07:33,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 11:07:34,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 11:07:34,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 11:07:34,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 11:07:34,007 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 11:07:34,009 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 11:07:34,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 11:07:34,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 11:07:34,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 11:07:34,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 11:07:34,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 11:07:34,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 11:07:34,039 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 11:07:34,040 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 11:07:34,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 11:07:34,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 11:07:34,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 11:07:34,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 11:07:34,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 11:07:34,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 11:07:34,052 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 11:07:34,054 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 11:07:34,054 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 11:07:34,055 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 11:07:34,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 11:07:34,056 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 11:07:34,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 11:07:34,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 11:07:34,059 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 11:07:34,108 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 11:07:34,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 11:07:34,109 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 11:07:34,109 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 11:07:34,111 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 11:07:34,111 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 11:07:34,112 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 11:07:34,112 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 11:07:34,113 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 11:07:34,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 11:07:34,114 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 11:07:34,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 11:07:34,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 11:07:34,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 11:07:34,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 11:07:34,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 11:07:34,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 11:07:34,117 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 11:07:34,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 11:07:34,118 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 11:07:34,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 11:07:34,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 11:07:34,119 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 11:07:34,119 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 11:07:34,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:07:34,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 11:07:34,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 11:07:34,121 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 11:07:34,121 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 11:07:34,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 11:07:34,122 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 11:07:34,122 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 11:07:34,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 11:07:34,123 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_86a4edb0-a3e5-41de-a784-ef8f962fac58/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4eb7ec87e4b26eecb67fe680444df008acb1d5ac2a26461a17b628d29f2e5ff2 [2022-10-17 11:07:34,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 11:07:34,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 11:07:34,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 11:07:34,589 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 11:07:34,590 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 11:07:34,592 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/floats-esbmc-regression/digits_while.c [2022-10-17 11:07:34,688 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/bin/uautomizer-J5u9QxTXDZ/data/8edd4819e/58a8965e305f4b02bdcd19c75f93fe47/FLAGb41ceaa0c [2022-10-17 11:07:35,206 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 11:07:35,206 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/sv-benchmarks/c/floats-esbmc-regression/digits_while.c [2022-10-17 11:07:35,214 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/bin/uautomizer-J5u9QxTXDZ/data/8edd4819e/58a8965e305f4b02bdcd19c75f93fe47/FLAGb41ceaa0c [2022-10-17 11:07:35,566 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/bin/uautomizer-J5u9QxTXDZ/data/8edd4819e/58a8965e305f4b02bdcd19c75f93fe47 [2022-10-17 11:07:35,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 11:07:35,574 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 11:07:35,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 11:07:35,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 11:07:35,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 11:07:35,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:07:35" (1/1) ... [2022-10-17 11:07:35,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb23b5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:35, skipping insertion in model container [2022-10-17 11:07:35,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:07:35" (1/1) ... [2022-10-17 11:07:35,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 11:07:35,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 11:07:35,840 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_86a4edb0-a3e5-41de-a784-ef8f962fac58/sv-benchmarks/c/floats-esbmc-regression/digits_while.c[317,330] [2022-10-17 11:07:35,866 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:07:35,876 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 11:07:35,892 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_86a4edb0-a3e5-41de-a784-ef8f962fac58/sv-benchmarks/c/floats-esbmc-regression/digits_while.c[317,330] [2022-10-17 11:07:35,902 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:07:35,919 INFO L208 MainTranslator]: Completed translation [2022-10-17 11:07:35,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:35 WrapperNode [2022-10-17 11:07:35,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 11:07:35,925 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 11:07:35,925 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 11:07:35,925 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 11:07:35,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:35" (1/1) ... [2022-10-17 11:07:35,943 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:35" (1/1) ... [2022-10-17 11:07:35,962 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 31 [2022-10-17 11:07:35,964 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 11:07:35,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 11:07:35,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 11:07:35,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 11:07:35,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:35" (1/1) ... [2022-10-17 11:07:35,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:35" (1/1) ... [2022-10-17 11:07:35,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:35" (1/1) ... [2022-10-17 11:07:35,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:35" (1/1) ... [2022-10-17 11:07:35,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:35" (1/1) ... [2022-10-17 11:07:35,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:35" (1/1) ... [2022-10-17 11:07:36,000 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:35" (1/1) ... [2022-10-17 11:07:36,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:35" (1/1) ... [2022-10-17 11:07:36,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 11:07:36,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 11:07:36,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 11:07:36,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 11:07:36,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:35" (1/1) ... [2022-10-17 11:07:36,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:07:36,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:07:36,048 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 11:07:36,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 11:07:36,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 11:07:36,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 11:07:36,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 11:07:36,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 11:07:36,181 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 11:07:36,183 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 11:07:36,377 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 11:07:36,384 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 11:07:36,384 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 11:07:36,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:07:36 BoogieIcfgContainer [2022-10-17 11:07:36,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 11:07:36,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 11:07:36,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 11:07:36,408 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 11:07:36,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 11:07:35" (1/3) ... [2022-10-17 11:07:36,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f69c584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:07:36, skipping insertion in model container [2022-10-17 11:07:36,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:35" (2/3) ... [2022-10-17 11:07:36,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f69c584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:07:36, skipping insertion in model container [2022-10-17 11:07:36,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:07:36" (3/3) ... [2022-10-17 11:07:36,412 INFO L112 eAbstractionObserver]: Analyzing ICFG digits_while.c [2022-10-17 11:07:36,448 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 11:07:36,448 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 11:07:36,506 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 11:07:36,515 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;@451e5f04, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 11:07:36,524 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 11:07:36,542 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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 11:07:36,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 11:07:36,549 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:36,549 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-17 11:07:36,550 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:36,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:36,560 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2022-10-17 11:07:36,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:07:36,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373938727] [2022-10-17 11:07:36,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:36,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:07:36,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:07:36,719 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 11:07:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:07:36,749 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 11:07:36,751 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 11:07:36,753 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-10-17 11:07:36,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 11:07:36,759 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-17 11:07:36,764 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 11:07:36,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 11:07:36 BoogieIcfgContainer [2022-10-17 11:07:36,782 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 11:07:36,783 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 11:07:36,783 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 11:07:36,783 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 11:07:36,784 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:07:36" (3/4) ... [2022-10-17 11:07:36,788 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-10-17 11:07:36,788 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 11:07:36,790 INFO L158 Benchmark]: Toolchain (without parser) took 1215.62ms. Allocated memory is still 96.5MB. Free memory was 60.0MB in the beginning and 45.1MB in the end (delta: 14.9MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2022-10-17 11:07:36,790 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 96.5MB. Free memory was 68.1MB in the beginning and 68.0MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 11:07:36,791 INFO L158 Benchmark]: CACSL2BoogieTranslator took 343.98ms. Allocated memory is still 96.5MB. Free memory was 59.8MB in the beginning and 70.9MB in the end (delta: -11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 11:07:36,792 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.38ms. Allocated memory is still 96.5MB. Free memory was 70.9MB in the beginning and 69.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 11:07:36,793 INFO L158 Benchmark]: Boogie Preprocessor took 41.93ms. Allocated memory is still 96.5MB. Free memory was 69.2MB in the beginning and 68.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 11:07:36,794 INFO L158 Benchmark]: RCFGBuilder took 393.39ms. Allocated memory is still 96.5MB. Free memory was 68.1MB in the beginning and 59.0MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 11:07:36,795 INFO L158 Benchmark]: TraceAbstraction took 378.07ms. Allocated memory is still 96.5MB. Free memory was 58.4MB in the beginning and 45.4MB in the end (delta: 13.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-10-17 11:07:36,796 INFO L158 Benchmark]: Witness Printer took 5.22ms. Allocated memory is still 96.5MB. Free memory was 45.4MB in the beginning and 45.1MB in the end (delta: 329.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 11:07:36,800 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 96.5MB. Free memory was 68.1MB in the beginning and 68.0MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 343.98ms. Allocated memory is still 96.5MB. Free memory was 59.8MB in the beginning and 70.9MB in the end (delta: -11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.38ms. Allocated memory is still 96.5MB. Free memory was 70.9MB in the beginning and 69.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.93ms. Allocated memory is still 96.5MB. Free memory was 69.2MB in the beginning and 68.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 393.39ms. Allocated memory is still 96.5MB. Free memory was 68.1MB in the beginning and 59.0MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 378.07ms. Allocated memory is still 96.5MB. Free memory was 58.4MB in the beginning and 45.4MB in the end (delta: 13.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 5.22ms. Allocated memory is still 96.5MB. Free memory was 45.4MB in the beginning and 45.1MB in the end (delta: 329.6kB). 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: 4]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryLONGDOUBLEComparisonOperation at line 12, overapproximation of someBinaryArithmeticDOUBLEoperation at line 8. Possible FailurePath: [L8] long double x = 1.0/7.0; [L9] long long res = 0; [L11] int i = 1; VAL [i=1, res=0] [L12] COND FALSE !(x != 0) VAL [i=1, res=0] [L19] CALL __VERIFIER_assert(res == 67050) [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L4] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 6 NumberOfCodeBlocks, 6 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 [2022-10-17 11:07:36,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/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_86a4edb0-a3e5-41de-a784-ef8f962fac58/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/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_86a4edb0-a3e5-41de-a784-ef8f962fac58/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/digits_while.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/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_86a4edb0-a3e5-41de-a784-ef8f962fac58/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 4eb7ec87e4b26eecb67fe680444df008acb1d5ac2a26461a17b628d29f2e5ff2 --- 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 11:07:39,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 11:07:39,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 11:07:39,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 11:07:39,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 11:07:39,831 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 11:07:39,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 11:07:39,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 11:07:39,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 11:07:39,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 11:07:39,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 11:07:39,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 11:07:39,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 11:07:39,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 11:07:39,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 11:07:39,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 11:07:39,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 11:07:39,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 11:07:39,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 11:07:39,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 11:07:39,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 11:07:39,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 11:07:39,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 11:07:39,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 11:07:39,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 11:07:39,909 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 11:07:39,909 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 11:07:39,911 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 11:07:39,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 11:07:39,913 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 11:07:39,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 11:07:39,914 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 11:07:39,915 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 11:07:39,916 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 11:07:39,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 11:07:39,918 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 11:07:39,919 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 11:07:39,919 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 11:07:39,919 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 11:07:39,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 11:07:39,921 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 11:07:39,926 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-10-17 11:07:39,977 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 11:07:39,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 11:07:39,979 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 11:07:39,979 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 11:07:39,980 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 11:07:39,980 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 11:07:39,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 11:07:39,982 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 11:07:39,983 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 11:07:39,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 11:07:39,984 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 11:07:39,985 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 11:07:39,985 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 11:07:39,985 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 11:07:39,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 11:07:39,986 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 11:07:39,986 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 11:07:39,987 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-10-17 11:07:39,987 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-10-17 11:07:39,987 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 11:07:39,987 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 11:07:39,988 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 11:07:39,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 11:07:39,988 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 11:07:39,989 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 11:07:39,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 11:07:39,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:07:39,989 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 11:07:39,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 11:07:39,990 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 11:07:39,990 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-10-17 11:07:39,990 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-10-17 11:07:39,991 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 11:07:39,991 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 11:07:39,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 11:07:39,992 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-17 11:07:39,992 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_86a4edb0-a3e5-41de-a784-ef8f962fac58/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4eb7ec87e4b26eecb67fe680444df008acb1d5ac2a26461a17b628d29f2e5ff2 [2022-10-17 11:07:40,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 11:07:40,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 11:07:40,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 11:07:40,474 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 11:07:40,475 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 11:07:40,477 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/floats-esbmc-regression/digits_while.c [2022-10-17 11:07:40,573 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/bin/uautomizer-J5u9QxTXDZ/data/17fb16ea7/dd55f85cba8449f0a7f17f374d1186dc/FLAGba2f4fdcb [2022-10-17 11:07:41,233 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 11:07:41,234 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/sv-benchmarks/c/floats-esbmc-regression/digits_while.c [2022-10-17 11:07:41,241 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/bin/uautomizer-J5u9QxTXDZ/data/17fb16ea7/dd55f85cba8449f0a7f17f374d1186dc/FLAGba2f4fdcb [2022-10-17 11:07:41,615 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/bin/uautomizer-J5u9QxTXDZ/data/17fb16ea7/dd55f85cba8449f0a7f17f374d1186dc [2022-10-17 11:07:41,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 11:07:41,621 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 11:07:41,623 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 11:07:41,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 11:07:41,628 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 11:07:41,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:07:41" (1/1) ... [2022-10-17 11:07:41,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24af4390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:41, skipping insertion in model container [2022-10-17 11:07:41,631 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:07:41" (1/1) ... [2022-10-17 11:07:41,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 11:07:41,660 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 11:07:41,871 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_86a4edb0-a3e5-41de-a784-ef8f962fac58/sv-benchmarks/c/floats-esbmc-regression/digits_while.c[317,330] [2022-10-17 11:07:41,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:07:41,928 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 11:07:41,963 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_86a4edb0-a3e5-41de-a784-ef8f962fac58/sv-benchmarks/c/floats-esbmc-regression/digits_while.c[317,330] [2022-10-17 11:07:41,968 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:07:42,001 INFO L208 MainTranslator]: Completed translation [2022-10-17 11:07:42,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:42 WrapperNode [2022-10-17 11:07:42,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 11:07:42,003 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 11:07:42,003 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 11:07:42,004 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 11:07:42,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:42" (1/1) ... [2022-10-17 11:07:42,022 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:42" (1/1) ... [2022-10-17 11:07:42,043 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 32 [2022-10-17 11:07:42,043 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 11:07:42,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 11:07:42,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 11:07:42,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 11:07:42,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:42" (1/1) ... [2022-10-17 11:07:42,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:42" (1/1) ... [2022-10-17 11:07:42,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:42" (1/1) ... [2022-10-17 11:07:42,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:42" (1/1) ... [2022-10-17 11:07:42,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:42" (1/1) ... [2022-10-17 11:07:42,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:42" (1/1) ... [2022-10-17 11:07:42,074 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:42" (1/1) ... [2022-10-17 11:07:42,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:42" (1/1) ... [2022-10-17 11:07:42,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 11:07:42,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 11:07:42,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 11:07:42,081 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 11:07:42,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:42" (1/1) ... [2022-10-17 11:07:42,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:07:42,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:07:42,137 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 11:07:42,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 11:07:42,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 11:07:42,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 11:07:42,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 11:07:42,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-10-17 11:07:42,282 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 11:07:42,285 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 11:07:44,528 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 11:07:44,535 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 11:07:44,536 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 11:07:44,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:07:44 BoogieIcfgContainer [2022-10-17 11:07:44,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 11:07:44,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 11:07:44,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 11:07:44,545 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 11:07:44,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 11:07:41" (1/3) ... [2022-10-17 11:07:44,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe59bae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:07:44, skipping insertion in model container [2022-10-17 11:07:44,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:42" (2/3) ... [2022-10-17 11:07:44,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe59bae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:07:44, skipping insertion in model container [2022-10-17 11:07:44,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:07:44" (3/3) ... [2022-10-17 11:07:44,549 INFO L112 eAbstractionObserver]: Analyzing ICFG digits_while.c [2022-10-17 11:07:44,591 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 11:07:44,602 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 11:07:44,693 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 11:07:44,717 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;@1c8220b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 11:07:44,717 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 11:07:44,723 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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 11:07:44,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 11:07:44,744 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:44,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-17 11:07:44,745 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:44,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:44,752 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2022-10-17 11:07:44,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 11:07:44,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929049513] [2022-10-17 11:07:44,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:44,769 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 11:07:44,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 11:07:44,773 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 11:07:44,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-10-17 11:07:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:44,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 11:07:44,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:07:45,029 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 11:07:45,029 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:07:45,030 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 11:07:45,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929049513] [2022-10-17 11:07:45,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [929049513] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:07:45,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:07:45,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:07:45,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918406712] [2022-10-17 11:07:45,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:07:45,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:07:45,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 11:07:45,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:07:45,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:07:45,092 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 11:07:47,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-17 11:07:47,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:07:47,551 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2022-10-17 11:07:47,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:07:47,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-10-17 11:07:47,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:07:47,563 INFO L225 Difference]: With dead ends: 20 [2022-10-17 11:07:47,563 INFO L226 Difference]: Without dead ends: 8 [2022-10-17 11:07:47,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:07:47,574 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-10-17 11:07:47,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-10-17 11:07:47,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-10-17 11:07:47,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-10-17 11:07:47,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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 11:07:47,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-10-17 11:07:47,647 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2022-10-17 11:07:47,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:07:47,647 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-10-17 11:07:47,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 11:07:47,648 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-10-17 11:07:47,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 11:07:47,649 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:47,649 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:07:47,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-10-17 11:07:47,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 11:07:47,864 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:47,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:47,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times [2022-10-17 11:07:47,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 11:07:47,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1981044050] [2022-10-17 11:07:47,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:47,867 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 11:07:47,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 11:07:47,868 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 11:07:47,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-10-17 11:07:48,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:48,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 11:07:48,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:07:49,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:07:49,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 11:07:56,070 WARN L833 $PredicateComparison]: unable to prove that (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32))) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from false [2022-10-17 11:07:58,118 WARN L855 $PredicateComparison]: unable to prove that (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32))) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from true [2022-10-17 11:07:58,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-10-17 11:07:58,404 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 11:07:58,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1981044050] [2022-10-17 11:07:58,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1981044050] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 11:07:58,405 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 11:07:58,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-10-17 11:07:58,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293578698] [2022-10-17 11:07:58,406 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 11:07:58,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 11:07:58,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 11:07:58,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 11:07:58,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=17, Unknown=2, NotChecked=8, Total=42 [2022-10-17 11:07:58,408 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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 11:08:00,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-17 11:08:02,557 WARN L855 $PredicateComparison]: unable to prove that (and (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32))) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) (= ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))) |c_ULTIMATE.start_main_~x~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-10-17 11:08:04,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-17 11:08:06,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-17 11:08:06,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:08:06,867 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-10-17 11:08:06,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 11:08:06,868 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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 11:08:06,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:08:06,869 INFO L225 Difference]: With dead ends: 13 [2022-10-17 11:08:06,869 INFO L226 Difference]: Without dead ends: 9 [2022-10-17 11:08:06,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=17, Invalid=18, Unknown=3, NotChecked=18, Total=56 [2022-10-17 11:08:06,871 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-10-17 11:08:06,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 10 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 2 Unknown, 7 Unchecked, 6.3s Time] [2022-10-17 11:08:06,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-10-17 11:08:06,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-10-17 11:08:06,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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 11:08:06,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-10-17 11:08:06,877 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2022-10-17 11:08:06,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:08:06,878 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-10-17 11:08:06,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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 11:08:06,878 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-10-17 11:08:06,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 11:08:06,889 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:08:06,889 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-10-17 11:08:06,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-10-17 11:08:07,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 11:08:07,098 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:08:07,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:08:07,099 INFO L85 PathProgramCache]: Analyzing trace with hash 292915403, now seen corresponding path program 2 times [2022-10-17 11:08:07,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 11:08:07,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867140290] [2022-10-17 11:08:07,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 11:08:07,100 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 11:08:07,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 11:08:07,101 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 11:08:07,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a4edb0-a3e5-41de-a784-ef8f962fac58/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-10-17 11:08:08,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 11:08:08,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 11:08:08,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 11:08:08,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:08:16,392 WARN L855 $PredicateComparison]: unable to prove that (and (= (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (let ((.cse2 ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse2) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32)))))) |c_ULTIMATE.start_main_~x~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-10-17 11:08:16,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-10-17 11:08:16,408 INFO L328 TraceCheckSpWp]: Computing backward predicates...