./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.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_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/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_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/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_a82486a9-7b53-4d2c-873b-fe53d1878054/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 23d3becec5645fa497625df98df84137049a5fde6a7d2da6a420cf3c624fd037 --- 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 10:31:22,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:31:22,951 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:31:23,005 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:31:23,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:31:23,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:31:23,012 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:31:23,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:31:23,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:31:23,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:31:23,027 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:31:23,029 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:31:23,030 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:31:23,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:31:23,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:31:23,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:31:23,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:31:23,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:31:23,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:31:23,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:31:23,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:31:23,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:31:23,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:31:23,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:31:23,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:31:23,069 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:31:23,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:31:23,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:31:23,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:31:23,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:31:23,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:31:23,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:31:23,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:31:23,079 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:31:23,080 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:31:23,080 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:31:23,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:31:23,081 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:31:23,082 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:31:23,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:31:23,083 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:31:23,086 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:31:23,129 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:31:23,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:31:23,130 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:31:23,130 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:31:23,131 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:31:23,131 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:31:23,132 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:31:23,132 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:31:23,133 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:31:23,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:31:23,134 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:31:23,134 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:31:23,134 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:31:23,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:31:23,135 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:31:23,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:31:23,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:31:23,135 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:31:23,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:31:23,136 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:31:23,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:31:23,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:31:23,136 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:31:23,137 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:31:23,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:31:23,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:31:23,138 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:31:23,139 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:31:23,139 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:31:23,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:31:23,139 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:31:23,140 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:31:23,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:31:23,140 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_a82486a9-7b53-4d2c-873b-fe53d1878054/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23d3becec5645fa497625df98df84137049a5fde6a7d2da6a420cf3c624fd037 [2022-10-17 10:31:23,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:31:23,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:31:23,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:31:23,473 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:31:23,474 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:31:23,475 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2022-10-17 10:31:23,556 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/data/b052aee6d/20e162b42d2b4085b88c3cfb39349a10/FLAG764a0e34a [2022-10-17 10:31:24,168 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:31:24,173 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2022-10-17 10:31:24,182 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/data/b052aee6d/20e162b42d2b4085b88c3cfb39349a10/FLAG764a0e34a [2022-10-17 10:31:24,496 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/data/b052aee6d/20e162b42d2b4085b88c3cfb39349a10 [2022-10-17 10:31:24,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:31:24,500 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:31:24,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:31:24,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:31:24,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:31:24,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:31:24" (1/1) ... [2022-10-17 10:31:24,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76dfaa72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:24, skipping insertion in model container [2022-10-17 10:31:24,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:31:24" (1/1) ... [2022-10-17 10:31:24,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:31:24,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:31:24,802 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_a82486a9-7b53-4d2c-873b-fe53d1878054/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c[4166,4179] [2022-10-17 10:31:24,810 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:31:24,822 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:31:24,930 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_a82486a9-7b53-4d2c-873b-fe53d1878054/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c[4166,4179] [2022-10-17 10:31:24,931 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:31:24,949 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:31:24,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:24 WrapperNode [2022-10-17 10:31:24,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:31:24,953 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:31:24,953 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:31:24,954 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:31:24,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:24" (1/1) ... [2022-10-17 10:31:24,995 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:24" (1/1) ... [2022-10-17 10:31:25,053 INFO L138 Inliner]: procedures = 19, calls = 39, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 324 [2022-10-17 10:31:25,054 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:31:25,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:31:25,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:31:25,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:31:25,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:24" (1/1) ... [2022-10-17 10:31:25,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:24" (1/1) ... [2022-10-17 10:31:25,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:24" (1/1) ... [2022-10-17 10:31:25,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:24" (1/1) ... [2022-10-17 10:31:25,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:24" (1/1) ... [2022-10-17 10:31:25,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:24" (1/1) ... [2022-10-17 10:31:25,121 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:24" (1/1) ... [2022-10-17 10:31:25,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:24" (1/1) ... [2022-10-17 10:31:25,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:31:25,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:31:25,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:31:25,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:31:25,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:24" (1/1) ... [2022-10-17 10:31:25,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:31:25,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:31:25,184 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:31:25,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:31:25,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:31:25,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:31:25,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:31:25,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:31:25,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-10-17 10:31:25,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-10-17 10:31:25,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:31:25,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:31:25,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:31:25,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-10-17 10:31:25,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:31:25,370 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:31:25,372 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:31:26,284 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:31:26,292 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:31:26,292 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-10-17 10:31:26,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:31:26 BoogieIcfgContainer [2022-10-17 10:31:26,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:31:26,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:31:26,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:31:26,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:31:26,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:31:24" (1/3) ... [2022-10-17 10:31:26,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5df2c111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:31:26, skipping insertion in model container [2022-10-17 10:31:26,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:24" (2/3) ... [2022-10-17 10:31:26,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5df2c111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:31:26, skipping insertion in model container [2022-10-17 10:31:26,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:31:26" (3/3) ... [2022-10-17 10:31:26,309 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2022-10-17 10:31:26,329 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:31:26,329 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:31:26,415 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:31:26,424 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;@35c7d8d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:31:26,424 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:31:26,429 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 91 states have (on average 1.8241758241758241) internal successors, (166), 92 states have internal predecessors, (166), 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 10:31:26,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-17 10:31:26,440 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:31:26,441 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:31:26,441 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:31:26,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:31:26,447 INFO L85 PathProgramCache]: Analyzing trace with hash -677525142, now seen corresponding path program 1 times [2022-10-17 10:31:26,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:31:26,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284923138] [2022-10-17 10:31:26,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:31:26,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:31:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:26,627 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 10:31:26,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:31:26,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284923138] [2022-10-17 10:31:26,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284923138] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:31:26,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:31:26,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:31:26,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274200381] [2022-10-17 10:31:26,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:31:26,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:31:26,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:31:26,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:31:26,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:31:26,674 INFO L87 Difference]: Start difference. First operand has 93 states, 91 states have (on average 1.8241758241758241) internal successors, (166), 92 states have internal predecessors, (166), 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 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 10:31:26,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:31:26,729 INFO L93 Difference]: Finished difference Result 183 states and 328 transitions. [2022-10-17 10:31:26,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:31:26,732 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2022-10-17 10:31:26,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:31:26,745 INFO L225 Difference]: With dead ends: 183 [2022-10-17 10:31:26,745 INFO L226 Difference]: Without dead ends: 89 [2022-10-17 10:31:26,749 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 10:31:26,753 INFO L413 NwaCegarLoop]: 141 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, 141 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 10:31:26,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:31:26,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-10-17 10:31:26,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-10-17 10:31:26,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.5454545454545454) internal successors, (136), 88 states have internal predecessors, (136), 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 10:31:26,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 136 transitions. [2022-10-17 10:31:26,826 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 136 transitions. Word has length 12 [2022-10-17 10:31:26,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:31:26,827 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 136 transitions. [2022-10-17 10:31:26,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 10:31:26,828 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 136 transitions. [2022-10-17 10:31:26,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-17 10:31:26,829 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:31:26,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:31:26,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:31:26,830 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:31:26,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:31:26,832 INFO L85 PathProgramCache]: Analyzing trace with hash 342824621, now seen corresponding path program 1 times [2022-10-17 10:31:26,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:31:26,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282637709] [2022-10-17 10:31:26,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:31:26,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:31:26,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:31:26,990 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:31:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:31:27,125 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:31:27,125 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 10:31:27,127 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-10-17 10:31:27,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:31:27,132 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-10-17 10:31:27,136 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 10:31:27,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 10:31:27 BoogieIcfgContainer [2022-10-17 10:31:27,168 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 10:31:27,169 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 10:31:27,169 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 10:31:27,169 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 10:31:27,170 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:31:26" (3/4) ... [2022-10-17 10:31:27,173 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-10-17 10:31:27,173 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 10:31:27,174 INFO L158 Benchmark]: Toolchain (without parser) took 2673.77ms. Allocated memory was 115.3MB in the beginning and 142.6MB in the end (delta: 27.3MB). Free memory was 88.7MB in the beginning and 64.3MB in the end (delta: 24.4MB). Peak memory consumption was 51.0MB. Max. memory is 16.1GB. [2022-10-17 10:31:27,175 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 115.3MB. Free memory is still 68.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:31:27,175 INFO L158 Benchmark]: CACSL2BoogieTranslator took 449.57ms. Allocated memory is still 115.3MB. Free memory was 88.5MB in the beginning and 85.9MB in the end (delta: 2.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-10-17 10:31:27,176 INFO L158 Benchmark]: Boogie Procedure Inliner took 101.07ms. Allocated memory is still 115.3MB. Free memory was 85.9MB in the beginning and 81.2MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-10-17 10:31:27,177 INFO L158 Benchmark]: Boogie Preprocessor took 88.21ms. Allocated memory is still 115.3MB. Free memory was 81.2MB in the beginning and 77.5MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-10-17 10:31:27,178 INFO L158 Benchmark]: RCFGBuilder took 1151.01ms. Allocated memory was 115.3MB in the beginning and 142.6MB in the end (delta: 27.3MB). Free memory was 77.5MB in the beginning and 102.3MB in the end (delta: -24.8MB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. [2022-10-17 10:31:27,178 INFO L158 Benchmark]: TraceAbstraction took 871.31ms. Allocated memory is still 142.6MB. Free memory was 101.7MB in the beginning and 65.1MB in the end (delta: 36.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2022-10-17 10:31:27,179 INFO L158 Benchmark]: Witness Printer took 4.49ms. Allocated memory is still 142.6MB. Free memory was 65.1MB in the beginning and 64.3MB in the end (delta: 851.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:31:27,182 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 115.3MB. Free memory is still 68.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 449.57ms. Allocated memory is still 115.3MB. Free memory was 88.5MB in the beginning and 85.9MB in the end (delta: 2.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 101.07ms. Allocated memory is still 115.3MB. Free memory was 85.9MB in the beginning and 81.2MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 88.21ms. Allocated memory is still 115.3MB. Free memory was 81.2MB in the beginning and 77.5MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1151.01ms. Allocated memory was 115.3MB in the beginning and 142.6MB in the end (delta: 27.3MB). Free memory was 77.5MB in the beginning and 102.3MB in the end (delta: -24.8MB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. * TraceAbstraction took 871.31ms. Allocated memory is still 142.6MB. Free memory was 101.7MB in the beginning and 65.1MB in the end (delta: 36.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Witness Printer took 4.49ms. Allocated memory is still 142.6MB. Free memory was 65.1MB in the beginning and 64.3MB in the end (delta: 851.9kB). Peak memory consumption was 2.1MB. 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: 193]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of bitwiseAnd at line 43, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of someBinaryDOUBLEComparisonOperation at line 192, overapproximation of bitwiseXOr at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={4:0}] [L184] double x = 0.0; [L185] double y = __VERIFIER_nondet_double(); [L187] COND TRUE y < 0.0 || y > 0.0 [L189] CALL, EXPR fmod_double(x, y) [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [\old(x)=0, \old(y)=8589934605, one_fmod=1, x=0, y=8589934605, Zero_fmod={4:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 VAL [\old(x)=0, \old(y)=8589934605, hx=0, hy=-1, lx=8589934593, ly=1, one_fmod=1, sx=0, x=0, y=8589934605, Zero_fmod={4:0}] [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [\old(x)=0, \old(y)=8589934605, hx=0, hy=4294967296, lx=8589934593, ly=1, one_fmod=1, sx=0, x=0, y=8589934605, Zero_fmod={4:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [\old(x)=0, \old(y)=8589934605, hx=0, hy=4294967296, lx=8589934593, ly=1, one_fmod=1, sx=0, x=0, y=8589934605, Zero_fmod={4:0}] [L189] RET, EXPR fmod_double(x, y) [L189] double res = fmod_double(x, y); [L192] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_fmod=1, res=8589934604, res == 0.0 && __signbit_double(res) == 0=0, x=0, y=8589934605, Zero_fmod={4:0}] [L192] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L193] reach_error() VAL [one_fmod=1, res=8589934604, x=0, y=8589934605, Zero_fmod={4:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 93 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, 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, 141 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, 141 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=93occurred 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: 0.1s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 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 10:31:27,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/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_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/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_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/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_a82486a9-7b53-4d2c-873b-fe53d1878054/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 23d3becec5645fa497625df98df84137049a5fde6a7d2da6a420cf3c624fd037 --- 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 10:31:29,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:31:29,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:31:29,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:31:29,849 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:31:29,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:31:29,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:31:29,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:31:29,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:31:29,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:31:29,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:31:29,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:31:29,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:31:29,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:31:29,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:31:29,867 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:31:29,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:31:29,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:31:29,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:31:29,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:31:29,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:31:29,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:31:29,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:31:29,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:31:29,886 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:31:29,887 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:31:29,888 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:31:29,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:31:29,890 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:31:29,891 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:31:29,892 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:31:29,893 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:31:29,894 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:31:29,896 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:31:29,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:31:29,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:31:29,899 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:31:29,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:31:29,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:31:29,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:31:29,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:31:29,903 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-10-17 10:31:29,952 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:31:29,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:31:29,957 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:31:29,957 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:31:29,958 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:31:29,958 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:31:29,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:31:29,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:31:29,960 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:31:29,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:31:29,962 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:31:29,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:31:29,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:31:29,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:31:29,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:31:29,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:31:29,964 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 10:31:29,964 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-10-17 10:31:29,964 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-10-17 10:31:29,965 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:31:29,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:31:29,965 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:31:29,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:31:29,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:31:29,966 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:31:29,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:31:29,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:31:29,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:31:29,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:31:29,968 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:31:29,968 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-10-17 10:31:29,968 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-10-17 10:31:29,969 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:31:29,969 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:31:29,969 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:31:29,970 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-17 10:31:29,970 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_a82486a9-7b53-4d2c-873b-fe53d1878054/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23d3becec5645fa497625df98df84137049a5fde6a7d2da6a420cf3c624fd037 [2022-10-17 10:31:30,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:31:30,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:31:30,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:31:30,396 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:31:30,397 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:31:30,399 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2022-10-17 10:31:30,475 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/data/aba86a90a/4f40d7d9a0be4737a99ee0f8ea300785/FLAG59b28aa6c [2022-10-17 10:31:31,003 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:31:31,004 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2022-10-17 10:31:31,015 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/data/aba86a90a/4f40d7d9a0be4737a99ee0f8ea300785/FLAG59b28aa6c [2022-10-17 10:31:31,459 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/data/aba86a90a/4f40d7d9a0be4737a99ee0f8ea300785 [2022-10-17 10:31:31,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:31:31,464 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:31:31,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:31:31,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:31:31,473 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:31:31,474 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:31:31" (1/1) ... [2022-10-17 10:31:31,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@240c5853 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:31, skipping insertion in model container [2022-10-17 10:31:31,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:31:31" (1/1) ... [2022-10-17 10:31:31,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:31:31,522 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:31:31,752 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_a82486a9-7b53-4d2c-873b-fe53d1878054/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c[4166,4179] [2022-10-17 10:31:31,755 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:31:31,771 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:31:31,821 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_a82486a9-7b53-4d2c-873b-fe53d1878054/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c[4166,4179] [2022-10-17 10:31:31,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:31:31,841 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:31:31,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:31 WrapperNode [2022-10-17 10:31:31,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:31:31,843 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:31:31,843 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:31:31,843 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:31:31,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:31" (1/1) ... [2022-10-17 10:31:31,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:31" (1/1) ... [2022-10-17 10:31:31,931 INFO L138 Inliner]: procedures = 22, calls = 39, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 242 [2022-10-17 10:31:31,935 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:31:31,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:31:31,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:31:31,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:31:31,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:31" (1/1) ... [2022-10-17 10:31:31,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:31" (1/1) ... [2022-10-17 10:31:31,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:31" (1/1) ... [2022-10-17 10:31:31,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:31" (1/1) ... [2022-10-17 10:31:31,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:31" (1/1) ... [2022-10-17 10:31:31,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:31" (1/1) ... [2022-10-17 10:31:31,995 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:31" (1/1) ... [2022-10-17 10:31:31,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:31" (1/1) ... [2022-10-17 10:31:32,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:31:32,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:31:32,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:31:32,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:31:32,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:31" (1/1) ... [2022-10-17 10:31:32,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:31:32,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:31:32,038 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:31:32,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:31:32,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:31:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2022-10-17 10:31:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2022-10-17 10:31:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-10-17 10:31:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:31:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2022-10-17 10:31:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-10-17 10:31:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:31:32,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:31:32,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-10-17 10:31:32,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:31:32,186 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:31:32,188 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:31:37,658 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:31:37,667 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:31:37,667 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-10-17 10:31:37,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:31:37 BoogieIcfgContainer [2022-10-17 10:31:37,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:31:37,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:31:37,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:31:37,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:31:37,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:31:31" (1/3) ... [2022-10-17 10:31:37,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5740b050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:31:37, skipping insertion in model container [2022-10-17 10:31:37,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:31" (2/3) ... [2022-10-17 10:31:37,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5740b050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:31:37, skipping insertion in model container [2022-10-17 10:31:37,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:31:37" (3/3) ... [2022-10-17 10:31:37,682 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2022-10-17 10:31:37,706 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:31:37,706 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:31:37,772 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:31:37,779 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;@cbfd306, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:31:37,780 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:31:37,785 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 59 states have (on average 1.7966101694915255) internal successors, (106), 60 states have internal predecessors, (106), 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 10:31:37,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 10:31:37,792 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:31:37,793 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:31:37,793 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:31:37,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:31:37,798 INFO L85 PathProgramCache]: Analyzing trace with hash 464220005, now seen corresponding path program 1 times [2022-10-17 10:31:37,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:31:37,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146243736] [2022-10-17 10:31:37,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:31:37,810 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:31:37,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:31:37,811 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:31:37,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-10-17 10:31:38,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:38,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 10:31:38,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:31:38,840 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 10:31:38,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:31:38,842 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:31:38,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146243736] [2022-10-17 10:31:38,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146243736] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:31:38,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:31:38,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:31:38,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365672723] [2022-10-17 10:31:38,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:31:38,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:31:38,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:31:38,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:31:38,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:31:38,882 INFO L87 Difference]: Start difference. First operand has 61 states, 59 states have (on average 1.7966101694915255) internal successors, (106), 60 states have internal predecessors, (106), 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 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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 10:31:38,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:31:38,906 INFO L93 Difference]: Finished difference Result 119 states and 208 transitions. [2022-10-17 10:31:38,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:31:38,908 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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 11 [2022-10-17 10:31:38,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:31:38,918 INFO L225 Difference]: With dead ends: 119 [2022-10-17 10:31:38,919 INFO L226 Difference]: Without dead ends: 57 [2022-10-17 10:31:38,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 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 10:31:38,926 INFO L413 NwaCegarLoop]: 89 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, 89 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 10:31:38,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:31:38,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-10-17 10:31:38,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-10-17 10:31:38,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.5) internal successors, (84), 56 states have internal predecessors, (84), 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 10:31:38,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 84 transitions. [2022-10-17 10:31:38,976 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 84 transitions. Word has length 11 [2022-10-17 10:31:38,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:31:38,976 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 84 transitions. [2022-10-17 10:31:38,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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 10:31:38,977 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 84 transitions. [2022-10-17 10:31:38,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 10:31:38,978 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:31:38,978 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:31:39,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:31:39,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:31:39,186 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:31:39,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:31:39,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1051323842, now seen corresponding path program 1 times [2022-10-17 10:31:39,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:31:39,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [659945681] [2022-10-17 10:31:39,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:31:39,191 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:31:39,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:31:39,192 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:31:39,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-10-17 10:31:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:40,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 22 conjunts are in the unsatisfiable core [2022-10-17 10:31:40,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:31:40,647 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 16 [2022-10-17 10:31:41,265 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-10-17 10:31:48,732 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 10:31:48,732 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:31:48,732 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:31:48,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [659945681] [2022-10-17 10:31:48,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [659945681] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:31:48,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:31:48,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:31:48,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156338665] [2022-10-17 10:31:48,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:31:48,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:31:48,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:31:48,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:31:48,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=30, Unknown=1, NotChecked=0, Total=42 [2022-10-17 10:31:48,737 INFO L87 Difference]: Start difference. First operand 57 states and 84 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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 10:31:51,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-17 10:31:51,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:31:51,355 INFO L93 Difference]: Finished difference Result 66 states and 93 transitions. [2022-10-17 10:31:51,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:31:51,393 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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) Word has length 13 [2022-10-17 10:31:51,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:31:51,394 INFO L225 Difference]: With dead ends: 66 [2022-10-17 10:31:51,394 INFO L226 Difference]: Without dead ends: 57 [2022-10-17 10:31:51,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=21, Invalid=50, Unknown=1, NotChecked=0, Total=72 [2022-10-17 10:31:51,397 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 5 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:31:51,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 350 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 1 Unknown, 116 Unchecked, 2.2s Time] [2022-10-17 10:31:51,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-10-17 10:31:51,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-10-17 10:31:51,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.4821428571428572) internal successors, (83), 56 states have internal predecessors, (83), 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 10:31:51,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 83 transitions. [2022-10-17 10:31:51,409 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 83 transitions. Word has length 13 [2022-10-17 10:31:51,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:31:51,410 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 83 transitions. [2022-10-17 10:31:51,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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 10:31:51,410 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 83 transitions. [2022-10-17 10:31:51,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-17 10:31:51,412 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:31:51,412 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:31:51,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:31:51,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:31:51,614 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:31:51,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:31:51,615 INFO L85 PathProgramCache]: Analyzing trace with hash 734189607, now seen corresponding path program 1 times [2022-10-17 10:31:51,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:31:51,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [967830750] [2022-10-17 10:31:51,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:31:51,616 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:31:51,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:31:51,619 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:31:51,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-10-17 10:31:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:51,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:31:51,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:31:52,154 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 10:31:52,154 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:31:52,154 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:31:52,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [967830750] [2022-10-17 10:31:52,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [967830750] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:31:52,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:31:52,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:31:52,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125316206] [2022-10-17 10:31:52,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:31:52,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:31:52,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:31:52,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:31:52,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:31:52,157 INFO L87 Difference]: Start difference. First operand 57 states and 83 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 10:31:53,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-17 10:31:54,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:31:54,044 INFO L93 Difference]: Finished difference Result 78 states and 103 transitions. [2022-10-17 10:31:54,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:31:54,045 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 15 [2022-10-17 10:31:54,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:31:54,047 INFO L225 Difference]: With dead ends: 78 [2022-10-17 10:31:54,047 INFO L226 Difference]: Without dead ends: 75 [2022-10-17 10:31:54,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:31:54,049 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 187 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:31:54,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 241 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-10-17 10:31:54,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-10-17 10:31:54,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 59. [2022-10-17 10:31:54,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.4655172413793103) internal successors, (85), 58 states have internal predecessors, (85), 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 10:31:54,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 85 transitions. [2022-10-17 10:31:54,062 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 85 transitions. Word has length 15 [2022-10-17 10:31:54,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:31:54,062 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 85 transitions. [2022-10-17 10:31:54,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 10:31:54,063 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 85 transitions. [2022-10-17 10:31:54,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-17 10:31:54,064 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:31:54,065 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:31:54,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:31:54,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:31:54,280 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:31:54,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:31:54,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1151454894, now seen corresponding path program 1 times [2022-10-17 10:31:54,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:31:54,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1400655694] [2022-10-17 10:31:54,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:31:54,282 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:31:54,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:31:54,286 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:31:54,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-10-17 10:31:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:54,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-17 10:31:54,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:31:56,015 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 10:31:56,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:31:56,016 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:31:56,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1400655694] [2022-10-17 10:31:56,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1400655694] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:31:56,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:31:56,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:31:56,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437546069] [2022-10-17 10:31:56,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:31:56,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:31:56,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:31:56,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:31:56,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:31:56,036 INFO L87 Difference]: Start difference. First operand 59 states and 85 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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 10:31:58,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-17 10:31:58,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:31:58,424 INFO L93 Difference]: Finished difference Result 68 states and 94 transitions. [2022-10-17 10:31:58,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:31:58,457 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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 16 [2022-10-17 10:31:58,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:31:58,458 INFO L225 Difference]: With dead ends: 68 [2022-10-17 10:31:58,458 INFO L226 Difference]: Without dead ends: 59 [2022-10-17 10:31:58,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:31:58,460 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 9 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:31:58,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 305 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 1 Unknown, 64 Unchecked, 2.1s Time] [2022-10-17 10:31:58,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-10-17 10:31:58,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-10-17 10:31:58,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.4482758620689655) internal successors, (84), 58 states have internal predecessors, (84), 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 10:31:58,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 84 transitions. [2022-10-17 10:31:58,473 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 84 transitions. Word has length 16 [2022-10-17 10:31:58,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:31:58,474 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 84 transitions. [2022-10-17 10:31:58,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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 10:31:58,474 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 84 transitions. [2022-10-17 10:31:58,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-17 10:31:58,476 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:31:58,476 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:31:58,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:31:58,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:31:58,693 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:31:58,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:31:58,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1071102724, now seen corresponding path program 1 times [2022-10-17 10:31:58,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:31:58,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651813592] [2022-10-17 10:31:58,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:31:58,694 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:31:58,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:31:58,695 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:31:58,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82486a9-7b53-4d2c-873b-fe53d1878054/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-10-17 10:31:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:58,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-17 10:31:58,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:31:59,888 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 10:31:59,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:31:59,889 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:31:59,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651813592] [2022-10-17 10:31:59,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1651813592] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:31:59,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:31:59,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-17 10:31:59,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857873390] [2022-10-17 10:31:59,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:31:59,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 10:31:59,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:31:59,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:31:59,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:31:59,901 INFO L87 Difference]: Start difference. First operand 59 states and 84 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 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)