./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0981.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_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0981.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 58ac0589d73c462785a1e0525d17b3b74f7db66a56b5cb7df3664daf67476919 --- 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 17:16:09,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:16:09,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:16:10,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:16:10,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:16:10,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:16:10,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:16:10,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:16:10,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:16:10,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:16:10,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:16:10,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:16:10,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:16:10,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:16:10,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:16:10,107 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:16:10,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:16:10,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:16:10,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:16:10,122 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:16:10,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:16:10,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:16:10,133 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:16:10,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:16:10,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:16:10,146 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:16:10,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:16:10,148 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:16:10,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:16:10,151 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:16:10,151 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:16:10,153 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:16:10,155 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:16:10,157 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:16:10,158 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:16:10,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:16:10,159 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:16:10,160 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:16:10,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:16:10,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:16:10,162 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:16:10,163 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:16:10,215 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:16:10,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:16:10,216 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:16:10,216 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:16:10,217 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:16:10,217 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:16:10,218 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:16:10,218 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:16:10,218 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:16:10,218 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:16:10,219 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:16:10,220 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:16:10,220 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:16:10,220 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:16:10,220 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:16:10,221 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:16:10,221 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:16:10,221 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:16:10,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:16:10,222 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:16:10,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:16:10,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:16:10,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:16:10,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:16:10,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:16:10,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:16:10,225 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:16:10,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:16:10,226 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:16:10,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:16:10,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:16:10,227 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:16:10,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:16:10,227 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:16:10,228 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:16:10,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:16:10,228 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:16:10,228 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:16:10,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:16:10,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:16:10,229 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:16:10,229 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_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58ac0589d73c462785a1e0525d17b3b74f7db66a56b5cb7df3664daf67476919 [2022-10-17 17:16:10,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:16:10,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:16:10,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:16:10,575 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:16:10,576 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:16:10,577 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/float-newlib/double_req_bl_0981.c [2022-10-17 17:16:10,649 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/data/541638bf8/c9178527f4b34a2aa9dd5829a77db55e/FLAGb39f5b2f7 [2022-10-17 17:16:11,233 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:16:11,234 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/sv-benchmarks/c/float-newlib/double_req_bl_0981.c [2022-10-17 17:16:11,244 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/data/541638bf8/c9178527f4b34a2aa9dd5829a77db55e/FLAGb39f5b2f7 [2022-10-17 17:16:11,567 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/data/541638bf8/c9178527f4b34a2aa9dd5829a77db55e [2022-10-17 17:16:11,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:16:11,572 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:16:11,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:16:11,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:16:11,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:16:11,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:16:11" (1/1) ... [2022-10-17 17:16:11,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49fb3324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:11, skipping insertion in model container [2022-10-17 17:16:11,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:16:11" (1/1) ... [2022-10-17 17:16:11,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:16:11,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:16:11,841 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_669ef872-b19d-425b-96b6-05970a85f9e4/sv-benchmarks/c/float-newlib/double_req_bl_0981.c[4783,4796] [2022-10-17 17:16:11,844 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:16:11,853 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:16:11,903 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_669ef872-b19d-425b-96b6-05970a85f9e4/sv-benchmarks/c/float-newlib/double_req_bl_0981.c[4783,4796] [2022-10-17 17:16:11,904 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:16:11,919 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:16:11,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:11 WrapperNode [2022-10-17 17:16:11,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:16:11,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:16:11,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:16:11,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:16:11,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:11" (1/1) ... [2022-10-17 17:16:11,941 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:11" (1/1) ... [2022-10-17 17:16:11,994 INFO L138 Inliner]: procedures = 18, calls = 43, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 259 [2022-10-17 17:16:12,002 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:16:12,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:16:12,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:16:12,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:16:12,013 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:11" (1/1) ... [2022-10-17 17:16:12,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:11" (1/1) ... [2022-10-17 17:16:12,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:11" (1/1) ... [2022-10-17 17:16:12,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:11" (1/1) ... [2022-10-17 17:16:12,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:11" (1/1) ... [2022-10-17 17:16:12,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:11" (1/1) ... [2022-10-17 17:16:12,065 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:11" (1/1) ... [2022-10-17 17:16:12,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:11" (1/1) ... [2022-10-17 17:16:12,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:16:12,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:16:12,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:16:12,085 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:16:12,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:11" (1/1) ... [2022-10-17 17:16:12,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:16:12,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:16:12,131 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:16:12,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:16:12,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:16:12,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:16:12,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:16:12,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-10-17 17:16:12,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:16:12,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-10-17 17:16:12,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:16:12,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:16:12,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:16:12,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:16:12,319 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:16:12,321 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:16:12,907 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:16:13,144 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:16:13,144 INFO L300 CfgBuilder]: Removed 14 assume(true) statements. [2022-10-17 17:16:13,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:16:13 BoogieIcfgContainer [2022-10-17 17:16:13,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:16:13,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:16:13,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:16:13,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:16:13,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:16:11" (1/3) ... [2022-10-17 17:16:13,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6808b4f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:16:13, skipping insertion in model container [2022-10-17 17:16:13,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:11" (2/3) ... [2022-10-17 17:16:13,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6808b4f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:16:13, skipping insertion in model container [2022-10-17 17:16:13,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:16:13" (3/3) ... [2022-10-17 17:16:13,158 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_0981.c [2022-10-17 17:16:13,182 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:16:13,182 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:16:13,275 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:16:13,286 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@11c14d76, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:16:13,286 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:16:13,291 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 33 states have (on average 1.7272727272727273) internal successors, (57), 34 states have internal predecessors, (57), 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 17:16:13,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 17:16:13,297 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:16:13,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:16:13,298 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:16:13,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:16:13,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1222018253, now seen corresponding path program 1 times [2022-10-17 17:16:13,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:16:13,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747920762] [2022-10-17 17:16:13,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:16:13,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:16:13,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:16:13,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:16:13,636 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:16:13,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747920762] [2022-10-17 17:16:13,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747920762] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:16:13,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:16:13,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:16:13,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042538589] [2022-10-17 17:16:13,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:16:13,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 17:16:13,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:16:13,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 17:16:13,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:16:13,689 INFO L87 Difference]: Start difference. First operand has 35 states, 33 states have (on average 1.7272727272727273) internal successors, (57), 34 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 17:16:13,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:16:13,760 INFO L93 Difference]: Finished difference Result 69 states and 113 transitions. [2022-10-17 17:16:13,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 17:16:13,765 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2022-10-17 17:16:13,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:16:13,776 INFO L225 Difference]: With dead ends: 69 [2022-10-17 17:16:13,776 INFO L226 Difference]: Without dead ends: 33 [2022-10-17 17:16:13,780 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 17:16:13,786 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:16:13,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:16:13,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-10-17 17:16:13,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-10-17 17:16:13,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 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 17:16:13,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2022-10-17 17:16:13,838 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 10 [2022-10-17 17:16:13,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:16:13,839 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2022-10-17 17:16:13,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 17:16:13,840 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2022-10-17 17:16:13,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-17 17:16:13,841 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:16:13,841 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:16:13,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:16:13,842 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:16:13,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:16:13,843 INFO L85 PathProgramCache]: Analyzing trace with hash -2136529276, now seen corresponding path program 1 times [2022-10-17 17:16:13,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:16:13,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660935549] [2022-10-17 17:16:13,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:16:13,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:16:14,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:16:14,261 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 17:16:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:16:14,505 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-10-17 17:16:14,506 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 17:16:14,508 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-10-17 17:16:14,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 17:16:14,515 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-10-17 17:16:14,519 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 17:16:14,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 05:16:14 BoogieIcfgContainer [2022-10-17 17:16:14,566 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 17:16:14,567 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 17:16:14,567 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 17:16:14,567 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 17:16:14,568 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:16:13" (3/4) ... [2022-10-17 17:16:14,571 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-10-17 17:16:14,571 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 17:16:14,572 INFO L158 Benchmark]: Toolchain (without parser) took 3000.08ms. Allocated memory was 121.6MB in the beginning and 176.2MB in the end (delta: 54.5MB). Free memory was 80.7MB in the beginning and 125.1MB in the end (delta: -44.4MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2022-10-17 17:16:14,573 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 121.6MB. Free memory is still 99.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:16:14,573 INFO L158 Benchmark]: CACSL2BoogieTranslator took 346.79ms. Allocated memory is still 121.6MB. Free memory was 80.7MB in the beginning and 90.0MB in the end (delta: -9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 17:16:14,574 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.81ms. Allocated memory is still 121.6MB. Free memory was 89.8MB in the beginning and 85.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-10-17 17:16:14,574 INFO L158 Benchmark]: Boogie Preprocessor took 72.27ms. Allocated memory is still 121.6MB. Free memory was 85.5MB in the beginning and 82.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-10-17 17:16:14,575 INFO L158 Benchmark]: RCFGBuilder took 1071.70ms. Allocated memory was 121.6MB in the beginning and 176.2MB in the end (delta: 54.5MB). Free memory was 82.3MB in the beginning and 135.8MB in the end (delta: -53.5MB). Peak memory consumption was 48.6MB. Max. memory is 16.1GB. [2022-10-17 17:16:14,576 INFO L158 Benchmark]: TraceAbstraction took 1416.02ms. Allocated memory is still 176.2MB. Free memory was 135.8MB in the beginning and 125.1MB in the end (delta: 10.7MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2022-10-17 17:16:14,576 INFO L158 Benchmark]: Witness Printer took 4.14ms. Allocated memory is still 176.2MB. Free memory is still 125.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:16:14,579 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 121.6MB. Free memory is still 99.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 346.79ms. Allocated memory is still 121.6MB. Free memory was 80.7MB in the beginning and 90.0MB in the end (delta: -9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.81ms. Allocated memory is still 121.6MB. Free memory was 89.8MB in the beginning and 85.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.27ms. Allocated memory is still 121.6MB. Free memory was 85.5MB in the beginning and 82.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1071.70ms. Allocated memory was 121.6MB in the beginning and 176.2MB in the end (delta: 54.5MB). Free memory was 82.3MB in the beginning and 135.8MB in the end (delta: -53.5MB). Peak memory consumption was 48.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1416.02ms. Allocated memory is still 176.2MB. Free memory was 135.8MB in the beginning and 125.1MB in the end (delta: 10.7MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. * Witness Printer took 4.14ms. Allocated memory is still 176.2MB. Free memory is still 125.1MB. 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: 188]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 170, overapproximation of someBinaryArithmeticDOUBLEoperation at line 133, overapproximation of bitwiseAnd at line 169. Possible FailurePath: [L17-L26] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L28] static const double zero = 0.0; [L111-L114] static const double two54_log10 = 1.80143985094819840000e+16, ivln10_log10 = 4.34294481903251816668e-01, log10_2hi_log10 = 3.01029995663611771306e-01, log10_2lo_log10 = 3.69423907715893078616e-13; [L116] static const double zero_log10 = 0.0; [L183] double x = 1.0 / 0.0; [L184] CALL, EXPR __ieee754_log10(x) [L119] double y, z; [L120] __int32_t i, k, hx; [L121] __uint32_t lx; VAL [\old(x)=18014398509481996, ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, x=18014398509481996, zero=0, zero_log10=0] [L124] ieee_double_shape_type ew_u; [L125] ew_u.value = (x) [L126] EXPR ew_u.parts.msw [L126] (hx) = ew_u.parts.msw [L127] EXPR ew_u.parts.lsw [L127] (lx) = ew_u.parts.lsw [L130] k = 0 VAL [\old(x)=18014398509481996, hx=-2, ivln10_log10=108573620475812954167/250000000000000000000, k=0, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, lx=0, two54_log=18014398509481984, two54_log10=18014398509481984, x=18014398509481996, zero=0, zero_log10=0] [L131] COND TRUE hx < 0x00100000 VAL [\old(x)=18014398509481996, hx=-2, ivln10_log10=108573620475812954167/250000000000000000000, k=0, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, lx=0, two54_log=18014398509481984, two54_log10=18014398509481984, x=18014398509481996, zero=0, zero_log10=0] [L132] COND TRUE ((hx & 0x7fffffff) | lx) == 0 [L133] return -two54_log10 / zero_log10; VAL [\old(x)=18014398509481996, hx=-2, ivln10_log10=108573620475812954167/250000000000000000000, k=0, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, lx=0, two54_log=18014398509481984, two54_log10=18014398509481984, x=18014398509481996, zero=0, zero_log10=0] [L184] RET, EXPR __ieee754_log10(x) [L184] double res = __ieee754_log10(x); [L187] CALL, EXPR isinf_double(res) [L162] __int32_t hx, lx; VAL [\old(x)=18014398509481995, ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, x=18014398509481995, zero=0, zero_log10=0] [L164] ieee_double_shape_type ew_u; [L165] ew_u.value = (x) [L166] EXPR ew_u.parts.msw [L166] (hx) = ew_u.parts.msw [L167] EXPR ew_u.parts.lsw [L167] (lx) = ew_u.parts.lsw [L169] hx &= 0x7fffffff [L170] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L171] hx = 0x7ff00000 - hx [L172] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L187] RET, EXPR isinf_double(res) [L187] COND TRUE !isinf_double(res) [L188] reach_error() VAL [ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, res=18014398509481995, two54_log=18014398509481984, two54_log10=18014398509481984, x=18014398509481996, zero=0, zero_log10=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 36 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 36 mSDtfsCounter, 6 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-10-17 17:16:14,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/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_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0981.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 58ac0589d73c462785a1e0525d17b3b74f7db66a56b5cb7df3664daf67476919 --- 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 17:16:17,098 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:16:17,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:16:17,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:16:17,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:16:17,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:16:17,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:16:17,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:16:17,151 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:16:17,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:16:17,154 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:16:17,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:16:17,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:16:17,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:16:17,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:16:17,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:16:17,163 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:16:17,164 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:16:17,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:16:17,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:16:17,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:16:17,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:16:17,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:16:17,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:16:17,199 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:16:17,199 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:16:17,199 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:16:17,201 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:16:17,201 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:16:17,203 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:16:17,203 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:16:17,204 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:16:17,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:16:17,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:16:17,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:16:17,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:16:17,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:16:17,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:16:17,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:16:17,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:16:17,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:16:17,212 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-10-17 17:16:17,238 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:16:17,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:16:17,239 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:16:17,239 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:16:17,240 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:16:17,240 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:16:17,240 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:16:17,240 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:16:17,241 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:16:17,241 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:16:17,241 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:16:17,241 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:16:17,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:16:17,242 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:16:17,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:16:17,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:16:17,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:16:17,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:16:17,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:16:17,243 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 17:16:17,244 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-10-17 17:16:17,244 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-10-17 17:16:17,244 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:16:17,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:16:17,244 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:16:17,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:16:17,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:16:17,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 17:16:17,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:16:17,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:16:17,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:16:17,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:16:17,246 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:16:17,246 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-10-17 17:16:17,246 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-10-17 17:16:17,246 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:16:17,247 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:16:17,247 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-17 17:16:17,247 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_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58ac0589d73c462785a1e0525d17b3b74f7db66a56b5cb7df3664daf67476919 [2022-10-17 17:16:17,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:16:17,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:16:17,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:16:17,652 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:16:17,655 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:16:17,657 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/float-newlib/double_req_bl_0981.c [2022-10-17 17:16:17,748 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/data/13bfb56ee/79a2b72d180849d2ad9f43427c88917e/FLAG1f77b650d [2022-10-17 17:16:18,369 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:16:18,370 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/sv-benchmarks/c/float-newlib/double_req_bl_0981.c [2022-10-17 17:16:18,385 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/data/13bfb56ee/79a2b72d180849d2ad9f43427c88917e/FLAG1f77b650d [2022-10-17 17:16:18,694 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/data/13bfb56ee/79a2b72d180849d2ad9f43427c88917e [2022-10-17 17:16:18,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:16:18,700 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:16:18,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:16:18,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:16:18,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:16:18,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:16:18" (1/1) ... [2022-10-17 17:16:18,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@292bc005 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:18, skipping insertion in model container [2022-10-17 17:16:18,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:16:18" (1/1) ... [2022-10-17 17:16:18,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:16:18,763 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:16:18,983 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_669ef872-b19d-425b-96b6-05970a85f9e4/sv-benchmarks/c/float-newlib/double_req_bl_0981.c[4783,4796] [2022-10-17 17:16:19,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:16:19,013 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:16:19,070 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_669ef872-b19d-425b-96b6-05970a85f9e4/sv-benchmarks/c/float-newlib/double_req_bl_0981.c[4783,4796] [2022-10-17 17:16:19,072 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:16:19,105 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:16:19,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:19 WrapperNode [2022-10-17 17:16:19,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:16:19,106 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:16:19,106 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:16:19,106 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:16:19,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:19" (1/1) ... [2022-10-17 17:16:19,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:19" (1/1) ... [2022-10-17 17:16:19,169 INFO L138 Inliner]: procedures = 21, calls = 43, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 235 [2022-10-17 17:16:19,169 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:16:19,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:16:19,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:16:19,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:16:19,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:19" (1/1) ... [2022-10-17 17:16:19,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:19" (1/1) ... [2022-10-17 17:16:19,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:19" (1/1) ... [2022-10-17 17:16:19,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:19" (1/1) ... [2022-10-17 17:16:19,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:19" (1/1) ... [2022-10-17 17:16:19,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:19" (1/1) ... [2022-10-17 17:16:19,217 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:19" (1/1) ... [2022-10-17 17:16:19,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:19" (1/1) ... [2022-10-17 17:16:19,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:16:19,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:16:19,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:16:19,225 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:16:19,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:19" (1/1) ... [2022-10-17 17:16:19,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:16:19,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:16:19,258 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:16:19,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:16:19,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:16:19,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2022-10-17 17:16:19,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2022-10-17 17:16:19,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-10-17 17:16:19,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:16:19,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-10-17 17:16:19,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:16:19,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:16:19,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-10-17 17:16:19,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:16:19,417 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:16:19,419 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:16:48,860 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:16:48,869 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:16:48,869 INFO L300 CfgBuilder]: Removed 14 assume(true) statements. [2022-10-17 17:16:48,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:16:48 BoogieIcfgContainer [2022-10-17 17:16:48,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:16:48,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:16:48,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:16:48,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:16:48,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:16:18" (1/3) ... [2022-10-17 17:16:48,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b38db65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:16:48, skipping insertion in model container [2022-10-17 17:16:48,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:19" (2/3) ... [2022-10-17 17:16:48,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b38db65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:16:48, skipping insertion in model container [2022-10-17 17:16:48,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:16:48" (3/3) ... [2022-10-17 17:16:48,883 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_0981.c [2022-10-17 17:16:48,906 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:16:48,906 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:16:48,962 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:16:48,971 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4ca9ed9f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:16:48,971 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:16:48,982 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 43 states have (on average 1.7209302325581395) internal successors, (74), 44 states have internal predecessors, (74), 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 17:16:48,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-17 17:16:48,996 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:16:48,997 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:16:48,997 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:16:49,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:16:49,007 INFO L85 PathProgramCache]: Analyzing trace with hash -306140874, now seen corresponding path program 1 times [2022-10-17 17:16:49,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:16:49,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83485289] [2022-10-17 17:16:49,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:16:49,024 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:16:49,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:16:49,028 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:16:49,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-10-17 17:16:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:16:50,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 17:16:50,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:16:50,339 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 17:16:50,340 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:16:50,341 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:16:50,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83485289] [2022-10-17 17:16:50,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83485289] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:16:50,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:16:50,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:16:50,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316440333] [2022-10-17 17:16:50,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:16:50,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 17:16:50,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:16:50,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 17:16:50,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:16:50,415 INFO L87 Difference]: Start difference. First operand has 45 states, 43 states have (on average 1.7209302325581395) internal successors, (74), 44 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:16:50,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:16:50,450 INFO L93 Difference]: Finished difference Result 88 states and 146 transitions. [2022-10-17 17:16:50,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 17:16:50,453 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-10-17 17:16:50,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:16:50,464 INFO L225 Difference]: With dead ends: 88 [2022-10-17 17:16:50,464 INFO L226 Difference]: Without dead ends: 42 [2022-10-17 17:16:50,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 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 17:16:50,482 INFO L413 NwaCegarLoop]: 59 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, 59 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 17:16:50,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:16:50,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-10-17 17:16:50,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-10-17 17:16:50,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.3658536585365855) internal successors, (56), 41 states have internal predecessors, (56), 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 17:16:50,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 56 transitions. [2022-10-17 17:16:50,541 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 56 transitions. Word has length 12 [2022-10-17 17:16:50,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:16:50,542 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 56 transitions. [2022-10-17 17:16:50,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:16:50,543 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 56 transitions. [2022-10-17 17:16:50,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-17 17:16:50,545 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:16:50,545 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:16:50,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-10-17 17:16:50,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:16:50,769 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:16:50,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:16:50,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1933005595, now seen corresponding path program 1 times [2022-10-17 17:16:50,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:16:50,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1959596846] [2022-10-17 17:16:50,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:16:50,771 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:16:50,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:16:50,772 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:16:50,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-10-17 17:16:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:16:51,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-17 17:16:51,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:16:52,305 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 17:16:52,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:16:52,305 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:16:52,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1959596846] [2022-10-17 17:16:52,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1959596846] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:16:52,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:16:52,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 17:16:52,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222925552] [2022-10-17 17:16:52,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:16:52,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:16:52,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:16:52,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:16:52,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:16:52,310 INFO L87 Difference]: Start difference. First operand 42 states and 56 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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 17:16:52,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:16:52,326 INFO L93 Difference]: Finished difference Result 74 states and 99 transitions. [2022-10-17 17:16:52,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 17:16:52,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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 17:16:52,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:16:52,328 INFO L225 Difference]: With dead ends: 74 [2022-10-17 17:16:52,328 INFO L226 Difference]: Without dead ends: 38 [2022-10-17 17:16:52,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:16:52,330 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:16:52,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 131 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 9 Unchecked, 0.0s Time] [2022-10-17 17:16:52,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-10-17 17:16:52,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-10-17 17:16:52,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 37 states have internal predecessors, (49), 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 17:16:52,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2022-10-17 17:16:52,338 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 49 transitions. Word has length 14 [2022-10-17 17:16:52,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:16:52,338 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 49 transitions. [2022-10-17 17:16:52,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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 17:16:52,339 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 49 transitions. [2022-10-17 17:16:52,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-17 17:16:52,339 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:16:52,340 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:16:52,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-10-17 17:16:52,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:16:52,556 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:16:52,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:16:52,557 INFO L85 PathProgramCache]: Analyzing trace with hash 2124356858, now seen corresponding path program 1 times [2022-10-17 17:16:52,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:16:52,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1701122241] [2022-10-17 17:16:52,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:16:52,558 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:16:52,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:16:52,559 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:16:52,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669ef872-b19d-425b-96b6-05970a85f9e4/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-10-17 17:16:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:16:52,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-10-17 17:16:52,770 INFO L286 TraceCheckSpWp]: Computing forward predicates...