./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0684b.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_e67775c9-7669-474b-bd67-51789100706c/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/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_e67775c9-7669-474b-bd67-51789100706c/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0684b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/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_e67775c9-7669-474b-bd67-51789100706c/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 27ce6cfdcb9dfa0489011437b04a08db6e71d8edccf3dd91706f7dddce0310b4 --- 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 10:31:12,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:31:12,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:31:12,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:31:12,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:31:12,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:31:12,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:31:12,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:31:12,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:31:12,848 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:31:12,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:31:12,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:31:12,851 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:31:12,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:31:12,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:31:12,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:31:12,856 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:31:12,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:31:12,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:31:12,863 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:31:12,865 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:31:12,867 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:31:12,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:31:12,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:31:12,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:31:12,882 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:31:12,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:31:12,884 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:31:12,886 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:31:12,887 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:31:12,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:31:12,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:31:12,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:31:12,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:31:12,894 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:31:12,895 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:31:12,896 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:31:12,897 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:31:12,897 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:31:12,898 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:31:12,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:31:12,900 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:31:12,950 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:31:12,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:31:12,952 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:31:12,952 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:31:12,953 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:31:12,954 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:31:12,955 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:31:12,955 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:31:12,956 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:31:12,957 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:31:12,958 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:31:12,958 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:31:12,959 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:31:12,959 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:31:12,959 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:31:12,959 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:31:12,960 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:31:12,960 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:31:12,960 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:31:12,960 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:31:12,961 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:31:12,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:31:12,961 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:31:12,961 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:31:12,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:31:12,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:31:12,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:31:12,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:31:12,965 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:31:12,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:31:12,965 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:31:12,965 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:31:12,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:31:12,966 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_e67775c9-7669-474b-bd67-51789100706c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27ce6cfdcb9dfa0489011437b04a08db6e71d8edccf3dd91706f7dddce0310b4 [2022-10-17 10:31:13,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:31:13,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:31:13,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:31:13,328 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:31:13,329 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:31:13,330 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/float-newlib/float_req_bl_0684b.c [2022-10-17 10:31:13,395 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/bin/uautomizer-J5u9QxTXDZ/data/6411dd45a/d6f43a3f19db4f23aac981e9422459ec/FLAG09f485091 [2022-10-17 10:31:13,884 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:31:13,885 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/sv-benchmarks/c/float-newlib/float_req_bl_0684b.c [2022-10-17 10:31:13,895 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/bin/uautomizer-J5u9QxTXDZ/data/6411dd45a/d6f43a3f19db4f23aac981e9422459ec/FLAG09f485091 [2022-10-17 10:31:14,256 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/bin/uautomizer-J5u9QxTXDZ/data/6411dd45a/d6f43a3f19db4f23aac981e9422459ec [2022-10-17 10:31:14,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:31:14,260 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:31:14,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:31:14,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:31:14,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:31:14,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:31:14" (1/1) ... [2022-10-17 10:31:14,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c949831 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:14, skipping insertion in model container [2022-10-17 10:31:14,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:31:14" (1/1) ... [2022-10-17 10:31:14,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:31:14,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:31:14,579 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_e67775c9-7669-474b-bd67-51789100706c/sv-benchmarks/c/float-newlib/float_req_bl_0684b.c[5556,5569] [2022-10-17 10:31:14,582 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:31:14,601 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:31:14,658 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_e67775c9-7669-474b-bd67-51789100706c/sv-benchmarks/c/float-newlib/float_req_bl_0684b.c[5556,5569] [2022-10-17 10:31:14,659 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:31:14,688 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:31:14,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:14 WrapperNode [2022-10-17 10:31:14,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:31:14,689 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:31:14,689 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:31:14,690 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:31:14,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:14" (1/1) ... [2022-10-17 10:31:14,712 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:14" (1/1) ... [2022-10-17 10:31:14,756 INFO L138 Inliner]: procedures = 20, calls = 84, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 274 [2022-10-17 10:31:14,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:31:14,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:31:14,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:31:14,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:31:14,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:14" (1/1) ... [2022-10-17 10:31:14,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:14" (1/1) ... [2022-10-17 10:31:14,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:14" (1/1) ... [2022-10-17 10:31:14,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:14" (1/1) ... [2022-10-17 10:31:14,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:14" (1/1) ... [2022-10-17 10:31:14,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:14" (1/1) ... [2022-10-17 10:31:14,818 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:14" (1/1) ... [2022-10-17 10:31:14,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:14" (1/1) ... [2022-10-17 10:31:14,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:31:14,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:31:14,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:31:14,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:31:14,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:14" (1/1) ... [2022-10-17 10:31:14,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:31:14,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:31:14,865 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:31:14,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:31:14,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:31:14,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:31:14,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:31:14,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-10-17 10:31:14,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:31:14,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-10-17 10:31:14,918 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2022-10-17 10:31:14,918 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2022-10-17 10:31:14,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:31:14,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:31:14,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:31:14,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-10-17 10:31:14,919 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2022-10-17 10:31:14,920 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2022-10-17 10:31:14,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:31:15,020 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:31:15,022 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:31:15,715 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:31:15,723 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:31:15,734 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-10-17 10:31:15,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:31:15 BoogieIcfgContainer [2022-10-17 10:31:15,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:31:15,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:31:15,741 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:31:15,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:31:15,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:31:14" (1/3) ... [2022-10-17 10:31:15,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aeda5cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:31:15, skipping insertion in model container [2022-10-17 10:31:15,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:14" (2/3) ... [2022-10-17 10:31:15,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aeda5cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:31:15, skipping insertion in model container [2022-10-17 10:31:15,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:31:15" (3/3) ... [2022-10-17 10:31:15,749 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0684b.c [2022-10-17 10:31:15,767 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:31:15,768 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:31:15,852 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:31:15,865 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;@11aefb74, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:31:15,865 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:31:15,871 INFO L276 IsEmpty]: Start isEmpty. Operand has 109 states, 101 states have (on average 1.7227722772277227) internal successors, (174), 102 states have internal predecessors, (174), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:31:15,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-17 10:31:15,879 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:31:15,880 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:31:15,881 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:31:15,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:31:15,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1799288028, now seen corresponding path program 1 times [2022-10-17 10:31:15,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:31:15,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718592983] [2022-10-17 10:31:15,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:31:15,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:31:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:16,064 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 10:31:16,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:31:16,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718592983] [2022-10-17 10:31:16,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718592983] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:31:16,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:31:16,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:31:16,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248568668] [2022-10-17 10:31:16,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:31:16,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:31:16,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:31:16,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:31:16,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:31:16,104 INFO L87 Difference]: Start difference. First operand has 109 states, 101 states have (on average 1.7227722772277227) internal successors, (174), 102 states have internal predecessors, (174), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 10:31:16,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:31:16,139 INFO L93 Difference]: Finished difference Result 216 states and 366 transitions. [2022-10-17 10:31:16,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:31:16,142 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 14 [2022-10-17 10:31:16,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:31:16,150 INFO L225 Difference]: With dead ends: 216 [2022-10-17 10:31:16,151 INFO L226 Difference]: Without dead ends: 105 [2022-10-17 10:31:16,155 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 10:31:16,158 INFO L413 NwaCegarLoop]: 159 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, 159 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 10:31:16,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:31:16,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-10-17 10:31:16,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2022-10-17 10:31:16,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 98 states have (on average 1.489795918367347) internal successors, (146), 98 states have internal predecessors, (146), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:31:16,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 154 transitions. [2022-10-17 10:31:16,230 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 154 transitions. Word has length 14 [2022-10-17 10:31:16,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:31:16,231 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 154 transitions. [2022-10-17 10:31:16,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 10:31:16,232 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 154 transitions. [2022-10-17 10:31:16,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-17 10:31:16,234 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:31:16,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:31:16,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:31:16,235 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:31:16,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:31:16,237 INFO L85 PathProgramCache]: Analyzing trace with hash 647324465, now seen corresponding path program 1 times [2022-10-17 10:31:16,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:31:16,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599588479] [2022-10-17 10:31:16,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:31:16,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:31:16,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:16,557 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 10:31:16,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:31:16,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599588479] [2022-10-17 10:31:16,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599588479] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:31:16,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:31:16,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:31:16,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470369528] [2022-10-17 10:31:16,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:31:16,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:31:16,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:31:16,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:31:16,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:31:16,562 INFO L87 Difference]: Start difference. First operand 105 states and 154 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 10:31:16,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:31:16,632 INFO L93 Difference]: Finished difference Result 218 states and 323 transitions. [2022-10-17 10:31:16,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:31:16,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2022-10-17 10:31:16,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:31:16,636 INFO L225 Difference]: With dead ends: 218 [2022-10-17 10:31:16,636 INFO L226 Difference]: Without dead ends: 147 [2022-10-17 10:31:16,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:31:16,638 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 57 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:31:16,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 434 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:31:16,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-10-17 10:31:16,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 132. [2022-10-17 10:31:16,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 125 states have (on average 1.528) internal successors, (191), 125 states have internal predecessors, (191), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:31:16,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 199 transitions. [2022-10-17 10:31:16,655 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 199 transitions. Word has length 17 [2022-10-17 10:31:16,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:31:16,655 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 199 transitions. [2022-10-17 10:31:16,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 10:31:16,656 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 199 transitions. [2022-10-17 10:31:16,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-17 10:31:16,657 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:31:16,657 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:31:16,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:31:16,658 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:31:16,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:31:16,658 INFO L85 PathProgramCache]: Analyzing trace with hash 2009397772, now seen corresponding path program 1 times [2022-10-17 10:31:16,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:31:16,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404758415] [2022-10-17 10:31:16,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:31:16,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:31:16,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:31:16,724 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:31:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:31:16,796 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:31:16,798 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 10:31:16,799 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-10-17 10:31:16,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:31:16,809 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-10-17 10:31:16,812 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 10:31:16,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 10:31:16 BoogieIcfgContainer [2022-10-17 10:31:16,875 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 10:31:16,877 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 10:31:16,877 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 10:31:16,878 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 10:31:16,878 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:31:15" (3/4) ... [2022-10-17 10:31:16,881 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-10-17 10:31:16,881 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 10:31:16,882 INFO L158 Benchmark]: Toolchain (without parser) took 2621.86ms. Allocated memory was 90.2MB in the beginning and 117.4MB in the end (delta: 27.3MB). Free memory was 54.7MB in the beginning and 56.5MB in the end (delta: -1.7MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. [2022-10-17 10:31:16,884 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 90.2MB. Free memory was 59.5MB in the beginning and 59.5MB in the end (delta: 24.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:31:16,886 INFO L158 Benchmark]: CACSL2BoogieTranslator took 426.53ms. Allocated memory was 90.2MB in the beginning and 117.4MB in the end (delta: 27.3MB). Free memory was 54.5MB in the beginning and 89.5MB in the end (delta: -35.0MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2022-10-17 10:31:16,888 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.31ms. Allocated memory is still 117.4MB. Free memory was 89.5MB in the beginning and 87.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:31:16,892 INFO L158 Benchmark]: Boogie Preprocessor took 72.49ms. Allocated memory is still 117.4MB. Free memory was 86.9MB in the beginning and 84.1MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-10-17 10:31:16,893 INFO L158 Benchmark]: RCFGBuilder took 906.01ms. Allocated memory is still 117.4MB. Free memory was 84.1MB in the beginning and 86.6MB in the end (delta: -2.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-10-17 10:31:16,894 INFO L158 Benchmark]: TraceAbstraction took 1135.47ms. Allocated memory is still 117.4MB. Free memory was 85.6MB in the beginning and 56.8MB in the end (delta: 28.8MB). Peak memory consumption was 31.0MB. Max. memory is 16.1GB. [2022-10-17 10:31:16,895 INFO L158 Benchmark]: Witness Printer took 4.73ms. Allocated memory is still 117.4MB. Free memory was 56.8MB in the beginning and 56.5MB in the end (delta: 372.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:31:16,900 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 90.2MB. Free memory was 59.5MB in the beginning and 59.5MB in the end (delta: 24.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 426.53ms. Allocated memory was 90.2MB in the beginning and 117.4MB in the end (delta: 27.3MB). Free memory was 54.5MB in the beginning and 89.5MB in the end (delta: -35.0MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.31ms. Allocated memory is still 117.4MB. Free memory was 89.5MB in the beginning and 87.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.49ms. Allocated memory is still 117.4MB. Free memory was 86.9MB in the beginning and 84.1MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 906.01ms. Allocated memory is still 117.4MB. Free memory was 84.1MB in the beginning and 86.6MB in the end (delta: -2.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1135.47ms. Allocated memory is still 117.4MB. Free memory was 85.6MB in the beginning and 56.8MB in the end (delta: 28.8MB). Peak memory consumption was 31.0MB. Max. memory is 16.1GB. * Witness Printer took 4.73ms. Allocated memory is still 117.4MB. Free memory was 56.8MB in the beginning and 56.5MB in the end (delta: 372.2kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 245]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 244, overapproximation of someUnaryDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 225, overapproximation of someBinaryArithmeticFLOAToperation at line 137. Possible FailurePath: [L29-L34] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L36-L41] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L43-L47] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L49-L51] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; [L117-L118] static const float tiny_atan2 = 1.0e-30, zero_atan2 = 0.0, pi_lo_atan2 = -8.7422776573e-08; VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, zero_atan2=0] [L236] float x = __VERIFIER_nondet_float(); [L237] float y = -1.0f / 0.0f; [L239] CALL isfinite_float(x) [L219] __int32_t ix; VAL [\old(x)=1000000000000000000000000000002, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000002, zero_atan2=0] [L221] ieee_float_shape_type gf_u; [L222] gf_u.value = (x) [L223] EXPR gf_u.word [L223] (ix) = gf_u.word [L225] ix &= 0x7fffffff [L226] return (((ix) < 0x7f800000L)); VAL [\old(x)=1000000000000000000000000000002, \result=1, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, ix=2139095039, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000002, zero_atan2=0] [L239] RET isfinite_float(x) [L239] COND TRUE isfinite_float(x) [L241] CALL, EXPR __ieee754_atan2f(y, x) [L121] float z; [L122] __int32_t k, m, hx, hy, ix, iy; VAL [\old(x)=1000000000000000000000000000002, \old(y)=1000000000000000000000000000001, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000002, y=1000000000000000000000000000001, zero_atan2=0] [L125] ieee_float_shape_type gf_u; [L126] gf_u.value = (x) [L127] EXPR gf_u.word [L127] (hx) = gf_u.word [L129] ix = hx & 0x7fffffff VAL [\old(x)=1000000000000000000000000000002, \old(y)=1000000000000000000000000000001, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, hx=0, ix=0, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000002, y=1000000000000000000000000000001, zero_atan2=0] [L131] ieee_float_shape_type gf_u; [L132] gf_u.value = (y) [L133] EXPR gf_u.word [L133] (hy) = gf_u.word [L135] iy = hy & 0x7fffffff VAL [\old(x)=1000000000000000000000000000002, \old(y)=1000000000000000000000000000001, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, hx=0, hy=2147483647, ix=0, iy=2147483646, iy = hy & 0x7fffffff=2147483647, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000002, y=1000000000000000000000000000001, zero_atan2=0] [L136] COND TRUE ((ix) > 0x7f800000L) || ((iy) > 0x7f800000L) [L137] return x + y; VAL [\old(x)=1000000000000000000000000000002, \old(y)=1000000000000000000000000000001, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, hx=0, hy=2147483647, ix=0, iy=2147483646, iy = hy & 0x7fffffff=2147483647, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000002, y=1000000000000000000000000000001, zero_atan2=0] [L241] RET, EXPR __ieee754_atan2f(y, x) [L241] float res = __ieee754_atan2f(y, x); [L244] COND TRUE res != -pi_o_2 VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, iy = hy & 0x7fffffff=2147483647, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=1000000000000000000000000000003, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000002, y=1000000000000000000000000000001, zero_atan2=0] [L245] reach_error() VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, iy = hy & 0x7fffffff=2147483647, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=1000000000000000000000000000003, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000002, y=1000000000000000000000000000001, zero_atan2=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 109 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 59 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 57 mSDsluCounter, 593 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 276 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 34 IncrementalHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 317 mSDtfsCounter, 34 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=132occurred in iteration=2, InterpolantAutomatonStates: 6, 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, 2 MinimizatonAttempts, 15 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 41 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 10:31:16,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/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_e67775c9-7669-474b-bd67-51789100706c/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/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_e67775c9-7669-474b-bd67-51789100706c/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0684b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/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_e67775c9-7669-474b-bd67-51789100706c/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 27ce6cfdcb9dfa0489011437b04a08db6e71d8edccf3dd91706f7dddce0310b4 --- 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 10:31:19,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:31:19,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:31:19,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:31:19,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:31:19,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:31:19,487 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:31:19,495 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:31:19,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:31:19,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:31:19,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:31:19,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:31:19,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:31:19,515 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:31:19,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:31:19,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:31:19,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:31:19,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:31:19,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:31:19,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:31:19,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:31:19,540 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:31:19,542 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:31:19,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:31:19,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:31:19,548 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:31:19,548 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:31:19,549 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:31:19,550 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:31:19,551 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:31:19,552 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:31:19,553 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:31:19,554 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:31:19,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:31:19,556 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:31:19,556 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:31:19,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:31:19,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:31:19,557 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:31:19,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:31:19,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:31:19,560 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-10-17 10:31:19,585 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:31:19,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:31:19,586 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:31:19,586 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:31:19,587 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:31:19,587 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:31:19,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:31:19,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:31:19,589 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:31:19,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:31:19,589 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:31:19,589 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:31:19,590 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:31:19,590 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:31:19,590 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:31:19,590 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:31:19,590 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 10:31:19,591 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-10-17 10:31:19,591 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-10-17 10:31:19,591 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:31:19,591 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:31:19,591 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:31:19,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:31:19,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:31:19,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:31:19,592 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:31:19,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:31:19,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:31:19,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:31:19,593 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:31:19,594 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-10-17 10:31:19,594 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-10-17 10:31:19,594 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:31:19,594 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:31:19,594 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:31:19,595 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-17 10:31:19,595 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_e67775c9-7669-474b-bd67-51789100706c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27ce6cfdcb9dfa0489011437b04a08db6e71d8edccf3dd91706f7dddce0310b4 [2022-10-17 10:31:19,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:31:20,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:31:20,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:31:20,019 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:31:20,020 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:31:20,021 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/float-newlib/float_req_bl_0684b.c [2022-10-17 10:31:20,103 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/bin/uautomizer-J5u9QxTXDZ/data/2bed54e42/f1b2fe0c7f634ff690c50edd8da66920/FLAGa0a14e5db [2022-10-17 10:31:20,576 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:31:20,576 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/sv-benchmarks/c/float-newlib/float_req_bl_0684b.c [2022-10-17 10:31:20,590 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/bin/uautomizer-J5u9QxTXDZ/data/2bed54e42/f1b2fe0c7f634ff690c50edd8da66920/FLAGa0a14e5db [2022-10-17 10:31:20,970 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/bin/uautomizer-J5u9QxTXDZ/data/2bed54e42/f1b2fe0c7f634ff690c50edd8da66920 [2022-10-17 10:31:20,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:31:20,977 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:31:20,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:31:20,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:31:20,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:31:20,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:31:20" (1/1) ... [2022-10-17 10:31:20,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58b2493c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:20, skipping insertion in model container [2022-10-17 10:31:20,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:31:20" (1/1) ... [2022-10-17 10:31:20,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:31:21,039 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:31:21,363 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_e67775c9-7669-474b-bd67-51789100706c/sv-benchmarks/c/float-newlib/float_req_bl_0684b.c[5556,5569] [2022-10-17 10:31:21,370 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:31:21,384 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:31:21,452 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_e67775c9-7669-474b-bd67-51789100706c/sv-benchmarks/c/float-newlib/float_req_bl_0684b.c[5556,5569] [2022-10-17 10:31:21,453 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:31:21,473 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:31:21,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:21 WrapperNode [2022-10-17 10:31:21,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:31:21,475 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:31:21,475 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:31:21,475 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:31:21,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:21" (1/1) ... [2022-10-17 10:31:21,512 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:21" (1/1) ... [2022-10-17 10:31:21,559 INFO L138 Inliner]: procedures = 23, calls = 84, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 238 [2022-10-17 10:31:21,561 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:31:21,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:31:21,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:31:21,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:31:21,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:21" (1/1) ... [2022-10-17 10:31:21,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:21" (1/1) ... [2022-10-17 10:31:21,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:21" (1/1) ... [2022-10-17 10:31:21,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:21" (1/1) ... [2022-10-17 10:31:21,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:21" (1/1) ... [2022-10-17 10:31:21,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:21" (1/1) ... [2022-10-17 10:31:21,649 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:21" (1/1) ... [2022-10-17 10:31:21,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:21" (1/1) ... [2022-10-17 10:31:21,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:31:21,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:31:21,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:31:21,665 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:31:21,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:21" (1/1) ... [2022-10-17 10:31:21,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:31:21,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:31:21,692 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:31:21,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:31:21,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:31:21,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2022-10-17 10:31:21,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-10-17 10:31:21,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:31:21,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2022-10-17 10:31:21,737 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2022-10-17 10:31:21,738 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2022-10-17 10:31:21,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-10-17 10:31:21,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:31:21,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:31:21,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2022-10-17 10:31:21,739 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2022-10-17 10:31:21,739 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2022-10-17 10:31:21,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-10-17 10:31:21,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:31:21,847 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:31:21,851 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:31:35,655 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:31:35,665 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:31:35,665 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-10-17 10:31:35,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:31:35 BoogieIcfgContainer [2022-10-17 10:31:35,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:31:35,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:31:35,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:31:35,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:31:35,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:31:20" (1/3) ... [2022-10-17 10:31:35,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32209744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:31:35, skipping insertion in model container [2022-10-17 10:31:35,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:21" (2/3) ... [2022-10-17 10:31:35,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32209744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:31:35, skipping insertion in model container [2022-10-17 10:31:35,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:31:35" (3/3) ... [2022-10-17 10:31:35,679 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0684b.c [2022-10-17 10:31:35,699 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:31:35,699 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:31:35,752 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:31:35,759 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;@721d0136, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:31:35,759 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:31:35,775 INFO L276 IsEmpty]: Start isEmpty. Operand has 96 states, 88 states have (on average 1.6477272727272727) internal successors, (145), 89 states have internal predecessors, (145), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:31:35,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-17 10:31:35,783 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:31:35,783 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:31:35,784 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:31:35,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:31:35,790 INFO L85 PathProgramCache]: Analyzing trace with hash -540288573, now seen corresponding path program 1 times [2022-10-17 10:31:35,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:31:35,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1970682244] [2022-10-17 10:31:35,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:31:35,804 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:31:35,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:31:35,807 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:31:35,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-10-17 10:31:36,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:36,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 10:31:36,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:31:36,884 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 10:31:36,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:31:36,885 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:31:36,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1970682244] [2022-10-17 10:31:36,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1970682244] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:31:36,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:31:36,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:31:36,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473960996] [2022-10-17 10:31:36,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:31:36,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:31:36,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:31:36,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:31:36,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:31:36,923 INFO L87 Difference]: Start difference. First operand has 96 states, 88 states have (on average 1.6477272727272727) internal successors, (145), 89 states have internal predecessors, (145), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 10:31:36,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:31:36,957 INFO L93 Difference]: Finished difference Result 190 states and 308 transitions. [2022-10-17 10:31:36,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:31:36,961 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 14 [2022-10-17 10:31:36,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:31:36,969 INFO L225 Difference]: With dead ends: 190 [2022-10-17 10:31:36,969 INFO L226 Difference]: Without dead ends: 92 [2022-10-17 10:31:36,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 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 10:31:36,977 INFO L413 NwaCegarLoop]: 136 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, 136 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 10:31:36,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:31:36,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-10-17 10:31:37,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2022-10-17 10:31:37,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 85 states have (on average 1.4470588235294117) internal successors, (123), 85 states have internal predecessors, (123), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:31:37,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 131 transitions. [2022-10-17 10:31:37,024 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 131 transitions. Word has length 14 [2022-10-17 10:31:37,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:31:37,024 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 131 transitions. [2022-10-17 10:31:37,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 10:31:37,025 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 131 transitions. [2022-10-17 10:31:37,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-17 10:31:37,026 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:31:37,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:31:37,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:31:37,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:31:37,238 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:31:37,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:31:37,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1209401097, now seen corresponding path program 1 times [2022-10-17 10:31:37,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:31:37,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1408515683] [2022-10-17 10:31:37,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:31:37,240 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:31:37,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:31:37,242 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:31:37,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-10-17 10:31:38,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:38,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 29 conjunts are in the unsatisfiable core [2022-10-17 10:31:38,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:31:38,651 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-17 10:31:40,258 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-10-17 10:31:40,259 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 35 [2022-10-17 10:31:41,093 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-10-17 10:31:41,093 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 26 [2022-10-17 10:31:42,061 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 10:31:42,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:31:42,062 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:31:42,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1408515683] [2022-10-17 10:31:42,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1408515683] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:31:42,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:31:42,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-17 10:31:42,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163302602] [2022-10-17 10:31:42,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:31:42,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 10:31:42,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:31:42,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 10:31:42,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:31:42,067 INFO L87 Difference]: Start difference. First operand 92 states and 131 transitions. Second operand has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 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 10:31:42,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:31:42,097 INFO L93 Difference]: Finished difference Result 96 states and 134 transitions. [2022-10-17 10:31:42,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:31:42,098 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 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 17 [2022-10-17 10:31:42,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:31:42,100 INFO L225 Difference]: With dead ends: 96 [2022-10-17 10:31:42,100 INFO L226 Difference]: Without dead ends: 92 [2022-10-17 10:31:42,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:31:42,102 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 0 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 110 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:31:42,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1105 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 110 Unchecked, 0.0s Time] [2022-10-17 10:31:42,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-10-17 10:31:42,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2022-10-17 10:31:42,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 85 states have (on average 1.4352941176470588) internal successors, (122), 85 states have internal predecessors, (122), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:31:42,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 130 transitions. [2022-10-17 10:31:42,117 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 130 transitions. Word has length 17 [2022-10-17 10:31:42,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:31:42,118 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 130 transitions. [2022-10-17 10:31:42,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 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 10:31:42,119 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 130 transitions. [2022-10-17 10:31:42,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-17 10:31:42,120 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:31:42,120 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:31:42,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:31:42,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:31:42,341 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:31:42,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:31:42,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1450439137, now seen corresponding path program 1 times [2022-10-17 10:31:42,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:31:42,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1486495435] [2022-10-17 10:31:42,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:31:42,342 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:31:42,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:31:42,346 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:31:42,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67775c9-7669-474b-bd67-51789100706c/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-10-17 10:31:43,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:43,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:31:43,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:31:45,286 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 10:31:45,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:31:45,287 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:31:45,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1486495435] [2022-10-17 10:31:45,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1486495435] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:31:45,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:31:45,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:31:45,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302206349] [2022-10-17 10:31:45,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:31:45,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:31:45,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:31:45,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:31:45,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:31:45,293 INFO L87 Difference]: Start difference. First operand 92 states and 130 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 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 10:31:49,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers []